Optical fiber connector and adjustment device for optical systems

Abstract

A fiber connector and adjustment device. The fiber connector includes an optical system and an optical integrated circuit. The optical system includes a lens barrel, a lens system disposed in the lens barrel, the lens system including at least one focusing lens. An outermost lens of the lens system is a planar focusing surface and serves as a mating interface. The optical integrated circuit is coupled to the optical system and is formed of an integrated circuit, an integrated optical path, or an optical fiber. A focal point of the lens system of the optical system is configured to coincide with a center point of the mating interface. Through the above configuration, the present application can develop a set of easy-to-operate and accurate, so that the optical system can be aligned to the male or female fiber connector of the optical integrated circuit.

Description

Technical Field

[0001] This invention relates to an optical fiber connector and an adjustment device. Background Technology

[0002] There are generally two types of existing fiber optic connectors: physical contact fiber optic connectors and expanded beam fiber optic connectors. Expanded beam fiber optic connectors typically include an optical system, which at least includes a collimating lens. If the collimating lens uses ordinary lenses, such as the most common plastic lenses, there will inevitably be inaccuracies in lens position and lens angle (relative to the plane perpendicular to the optical axis). These problems will cause errors in the focal point of the parallel beam incident on the collimating lens. Furthermore, because the core diameter of a single-mode fiber is only 9μm, even a small error can have a significant impact.

[0003] Therefore, developing an easy-to-operate yet precise system that allows optical systems to be aligned with optical integrated circuits to complete male or female fiber optic connectors is an important issue. Summary of the Invention

[0004] The purpose of this invention is to solve one of the above-mentioned problems.

[0005] In view of the above problems, according to an embodiment of the present invention, a fiber optic connector is provided. The fiber optic connector includes an optical system and an optical integrated circuit. The optical system includes a lens barrel portion, a lens system, and a circular shell. The lens system is disposed within the lens barrel portion, and the lens system includes at least one focusing lens. The outermost lens of the lens system is a planar focusing surface and serves as a mating surface. The circular shell is located between the lens barrel portion and the lens system. Furthermore, the optical integrated circuit is coupled to the optical system. The focal point of the lens system in the optical system is configured to coincide with the center point of the mating surface.

[0006] In some embodiments, the lens system includes two focusing lenses, the circular shell includes separate first and second portions, and one of the two focusing lenses is surrounded by the first portion of the circular shell.

[0007] In some embodiments, the optical system further includes a packaging structure located outside the optical system.

[0008] Furthermore, according to another embodiment of the present invention, an adjustment device for an optical system is provided for adjusting the optical system of a fiber optic connector. The adjustment device includes: a long straight tube, a light source, and a monitoring device. The long straight tube has a first opening, a second opening, and a fixing member. The optical system is fitted through the second opening. The fixing member is located on the long straight tube and configured to fix the circular shell of the optical system. The light source is disposed around the periphery of the first opening to illuminate the optical system. The monitoring device faces the second opening of the long straight tube to monitor the light spot imaged by the optical system. The optical system includes a lens barrel and a lens system, the lens system including at least one focusing lens. The outermost lens of the lens system is a focusing surface and serves as a mating surface. The at least one focusing lens is composed of a lens body and a protruding lug. The lens barrel also has at least one lens barrel adjustment hole on its wall perpendicular to the optical axis of the optical system, corresponding to the protruding lug of the at least one focusing lens. The long straight tube also has at least one long straight tube adjustment hole on its wall aligned with the at least one lens barrel adjustment hole. The light spot on the screen of the monitoring device is moved by a tool through at least one long straight tube adjustment hole and at least one lens barrel adjustment hole in a lateral direction perpendicular to the optical axis, so that the light spot is aligned with the center point of the mating surface.

[0009] In some embodiments, the light source is a laser light source.

[0010] In some embodiments, the light source is an optical fiber light source.

[0011] In some embodiments, the long straight tube further includes a groove located on the long straight tube and configured to allow an optical fiber to pass through the long straight tube.

[0012] In some embodiments, the adjustment device further includes a tool for moving the protruding ear in a lateral direction perpendicular to the optical axis, comprising a clamping portion, a plate, and a stepper motor. The clamping portion is configured to clamp an object. The plate is located below the clamping portion and configured to support and move the clamping portion in a plane. The stepper motor is located between the clamping portion and the plate and configured to control the tightness of the clamping portion.

[0013] In some embodiments, the tool further includes a first adjusting rod and a second adjusting rod. The first adjusting rod is located below the plate and configured to adjust the movement of the plate in a first direction. The second adjusting rod is located below the plate and configured to adjust the movement of the plate in a second direction.

[0014] In some embodiments, the surface of the clamp portion that contacts the object has longitudinal rows of serrated grooves, configured to increase the friction between the clamp portion and the object.

[0015] The fiber optic connector and optical system adjustment device of the present invention observes the light spot imaged by the optical system on its imaging plane and moves the focusing lens and / or fine-tuning lens laterally by means of the protruding ears of the focusing lens and / or fine-tuning positioning lens, so that the focal point of the optical system can be aligned with the center point of the mating surface. Furthermore, a mating surface carrier is also provided in the optical system, which can be moved laterally to align the focal point of the optical system with the center point of the mating surface. Therefore, without the use of a complex collimator, calibration costs can be reduced, while a precisely aligned fiber optic connector can be obtained. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the architecture of an expanded beam fiber optic connector system according to an embodiment of the present invention.

[0017] Figure 2A and Figure 2B This is a cross-sectional structural schematic diagram of the optical system according to the first embodiment of the present invention.

[0018] Figures 3A to 3E This is a schematic diagram illustrating various variations of the female optical fiber connector structure according to an embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional structural schematic diagram of an optical system according to a second embodiment of the present invention.

[0020] Figure 5A This is a schematic diagram of the structure of an optical system with a female optical fiber connector structure according to another embodiment of the present invention.

[0021] Figure 5B yes Figure 5A A partially enlarged view of the mating interface carrier shown.

[0022] Figure 5C yes Figure 5A The diagram shows a three-dimensional view of the mating interface carrier.

[0023] Figure 5D This is an example Figure 5A A schematic diagram illustrating structural changes in an optical system.

[0024] Figures 6A to 6C According to this embodiment, the following are used: Figure 5A A schematic diagram of the architecture of the mother fiber optic connector of the optical system.

[0025] Figures 6D to 6F According to this embodiment, the following are used: Figure 5D A schematic diagram of the male and female fiber optic connectors of the optical system.

[0026] Figure 6G and Figure 6H Draw Figure 6C and Figure 6F A schematic diagram showing the state of the fiber optic cable after it has been inserted into the connector.

[0027] Figure 6I A schematic diagram of a physical contact connector to which the present invention is applied is shown.

[0028] Figure 7A This is a cross-sectional structural schematic diagram of an optical system according to a third embodiment of the present invention.

[0029] Figure 7B This is a schematic diagram of the structure of the female optical fiber connector according to an embodiment of the present invention.

[0030] Figures 8A to 8D This is a schematic diagram illustrating several examples of block-shaped mating interface carriers according to embodiments of the present invention.

[0031] Figures 9A to 9D This is a simplified architectural schematic diagram of an optical fiber connector according to an embodiment of the present invention.

[0032] Figures 9E to 9G Draw Figures 9A to 9D A schematic diagram of the three-dimensional and cross-sectional views of the mating surface carrier and the mating body.

[0033] Figures 10A to 10D This is a schematic diagram of the structure of an optical fiber connector according to an embodiment of the present invention.

[0034] Figures 10E to 10G Draw Figures 10A to 10D A schematic diagram of the three-dimensional and cross-sectional views of the mating surface carrier and the mating body.

[0035] Figure 11A and Figure 11B Enlarged views of the recessed portion of the mating interface carrier and the convex portion of the mating body are shown.

[0036] Figures 12A to 12D This is a schematic diagram of the structure of an optical fiber connector according to an embodiment of the present invention.

[0037] Figure 12E Draw Figures 12A to 12D A schematic diagram of the mating surface carrier and the mating body.

[0038] Figure 13A and Figure 13B This is a simplified architectural schematic diagram of an optical fiber connector according to an embodiment of the present invention.

[0039] Figures 14A to 14C This is a simplified architectural schematic diagram of an optical fiber connector according to an embodiment of the present invention.

[0040] Figures 15A to 15F This is a schematic diagram illustrating a long straight tube structure for adjusting an optical system and its method of generating a parallel beam, according to the present invention.

[0041] Figure 16A and Figure 16B These are several variations of the long straight tube structure illustrated according to the present invention.

[0042] Figure 17A and Figure 17B This is a variation of the longer straight tube structure illustrated according to the present invention.

[0043] Figures 18A to 18C This is an explanatory diagram illustrating the movement of the focal point when the fine-tuning positioning lens generates displacement according to an embodiment of the present invention.

[0044] Figure 19 This is an explanatory diagram illustrating the movable distance of each lens in the lateral direction according to an embodiment of the present invention.

[0045] Figures 20A to 20D These are schematic diagrams illustrating several possible states for adjusting the focus of an optical system according to the present invention.

[0046] Figure 21 This is a schematic diagram illustrating an example of the configuration of a lens system in an optical system according to the present invention.

[0047] Figures 22A to 22E A schematic diagram illustrating the movement of the focal point when the fine-tuning positioning lens produces displacement according to another embodiment of the present invention.

[0048] Figures 23A to 23D Schematic diagrams of an optical system with male and female connector structures according to another embodiment of the present invention are shown respectively.

[0049] Figures 24A to 24C Drawing fixed and adjusted as follows Figure 23A and Figure 23B A schematic diagram of the connector device.

[0050] Figure 25A and Figure 25B These are schematic diagrams of a device for connecting a waveguide within a device, according to another embodiment of the present invention.

[0051] Figure 26 Draw Figure 25A and Figure 25B A schematic diagram of the bracket of the connector device.

[0052] Figure 27A and Figure 27B Drawing fixed and adjusted as follows Figure 25A and Figure 25B A schematic diagram of the connector device.

[0053] Figure 28A and Figure 28B A schematic diagram illustrating the use of an xy fine-tuning platform to adjust the position according to some embodiments of the present invention is shown.

[0054] Figure 28C A schematic diagram of an xy fine-tuning platform according to some embodiments of the present invention is shown.

[0055] Figure 29 A partially enlarged view of the clamp portion and lens of an xy fine-tuning platform according to some embodiments of the present invention is shown.

[0056] Figure 30 A schematic diagram of an optical fiber connector according to some embodiments of the present invention is shown.

[0057] Figure 31 Illustration as follows Figure 30 A three-dimensional view of the male connector portion of a fiber optic connector.

[0058] Figure 32 Three lens assemblies for connectors used in some embodiments of the present invention are illustrated.

[0059] Figure 33A and Figure 33B A schematic diagram illustrating the mating face carrier and mating body of a connector according to some embodiments of the present invention is shown.

[0060] Figure 34 A schematic diagram of a connector device according to some embodiments of the present invention is shown.

[0061] Figures 35A to 35C A schematic diagram illustrating a connector comprising an encapsulation structure and a physical contact optical fiber according to some embodiments of the present invention is shown.

[0062] Symbol Explanation 100: Expanded Beam Fiber Optic Connector System 110: Female Expanded Beam Fiber Optic Connector (Female Fiber Optic Connector) 112: First optical system; 112A: Collimating optical system 114: First optical integrated circuit; 116: Alignment bushing 118: Focus Surface 118A: Surfaces of a specific shape (i.e., mating surfaces MJ) 120: Male extended beam fiber optic connector (male fiber optic connector) 122: Second optical system; 124: Second optical integrated circuit 130: Parallel beam; 140: Monitoring device 150: Lens tube section; 160, 170: Pairing mating surface carrier 171: Conical portion; 171a: First surface 171b: Second surface; 171c: Third surface 172: Base section 180: Connecting body 181: Top surface 200A, 200B, 200C, 200D, 200E: Female fiber optic connectors 210A, 210B, 210C, 210D, 210E: Optical System 212, 312: Collimating lens; 212a, 312a: Lens body 212b, 312b: Prominent ear 214a, 214b, 314a, 314b: Positioning rings 216, 316: Lens tube portion; 216a, 316a: Lower surface of the lens tube portion. 218, 318: First window; 219, 319: Second window 219a, 319a: Second viewing window facing outwards; 230, 330: Alignment bushings. 230a, 230b, 330a, 330b: Align the bushing chamfer. 230c: Lower surface of the alignment bushing; 240, 340: Package body 250A, 250B, 250D, 250E: Integrated Circuits 250C: Integrated Optical Path 252a, 252b, 252d, 252e: Integrated circuit body 252c: Integrated optical path body; 253: Extension section 254a, 254b, 254d, 254e: Integrated circuit units 254c: Integrated optical path unit; 256: Mounting bracket 258a, 258b, 258c, 258e: Containment Zones 260, 430, 430', 430": Waterproof and anti-bend section 270: Casing 270a: Opening 270b: Upper surface; 270c: Hole 300A, 300B, 300C, 300E: Female fiber optic connectors 300D: Male fiber optic connector 310A, 310B, 310B', 310E: Optical System 330c: Alignment bushing lower surface; 350: Mating mating surface carrier pressure foot 350a: Wall section; 350b: Bottom section 350c: Upper surface of mating interface carrier pressure foot 360, 360': Pairing interface carrier 360a, 360'a: Pairing interface carrier body 360b, 360'b: Carrier flange 361: Chamfer 370: Clearance 380, 380': Insertion holes; 400A, 400B: Integrated circuits 400C, 400D, 400E: Integrated optical path 400, 400', 400": shell; 400a, 400a', 400a": outer shell. 400b, 400b', 400b": Inner shell; 400c, 400c', 400c": Cover. 400d, 400d': Upper surface; 400e, 400e': First opening 400f, 400f': Second opening; 400g, 400g': Bottom surface 401: Emphasizing Structure 410, 410', 410", 412', 412": Insertion holes 410'a, 410"a, 412'a, 412"a: chamfer 420: Integrated circuit body; 422: Extension section 424: Corner section 426: Narrow section 428: Width section 440, 440': Integrated circuit unit 450: Integrated optical path body; 451: Waveguide 452: Clad layer 454: Core 490: Physical contact connector; 491: Bare optical fiber 492: Protective layer; 493: Positioning mechanism 500A, 500B, 500C, 500D, 500E: Optical Systems 510A: Collimating Lens 520A, 520B, 520C, 520D, 520E: Pairing interface carriers 530A, 530B, 530C, 530D, 530E: Conical section 532A, 532B, 532C, 532D, 532E: Top surface of the cone section 533B, 533D: concave bottom surface 533C, 533E: convex surface 534A, 534B, 534C: Bottom surface of the cone section 536A, 536B, 536C: Side view of the cone portion 536D, 536E: Stepped outer surface 537B, 537D: concave portion 537C, 537E: convex portion 540A, 540B, 540C: Base section 542A, 542B, 542C: Top surface of the base 544A, 544B, 544C: Bottom surface of the base 546A, 546B, 546C: Side of the base 550: Parallel beam 600A1, 600A2, 600B1, 600B2, 600C1, 600C2: Integrated Circuits 600D, 600E: Integrated Circuits 600A3, 600B3, 600C3: Integrated optical path 610A1, 610A2, 610B1, 610B2, 610C1, 610C2, 610D, 610E: Integrated circuit body 610A3, 610B3, 610C3, 610F: Integrated optical path body 620A1, 620A2, 620B1, 620B2, 620C1, 620C2, 620E: Integrated Circuit Units 620A3, 620B3, 620C3, 620F: Integrated optical path unit 630A1, 630B1, 630C1, 630D, 630E: Docking bodies 631B1, 631D: convex part 631C1, 631E: concave part 632A1, 632B1, 632C1: Inclined surfaces 632D, 632E: Stepped inner surface 633A1, 633B1, 633C1: Side view 634A1, 634B1, 634C1: bottom surface 635A1, 635C1: Second opening 636A1, 636B1, 636C1: First opening 638B1, 638C1: Inner bottom surface 1000, 1000A: Long straight tube 1001: Upper edge surface of the long straight tube; 1010: First opening 1020: Second opening; 1050: Imaging plane 1100, 1504: Uniform light source; 1100A: Light source 1150: Sensor; 1070, 1080, 1090: Long straight inner tube 1072, 1082, 1092: Central hole 1200: Optical system; 1202, 1202': Collimating lens 1202'a, 1202'b: Biconvex lens; 1202'c: Biconcave lens 1204: First window 1206: Second window 1206a: Second viewpoint facing outwards; 1208a, 1208b: Positioning ring 1210: Lens tube section; 1300: Parallel beam. 1302: Edge ray; 1400: Diffuse screen mounting hole 1500: Diffuse screen module 1502: Diffuse screen 1700: Optical system; 1702, 1704: Positioning ring 1710: Lens tube section; 1712: Adjustment hole 1714: Gap; 1720: Collimating lens 1722: Lens body; 1724: Protruding ear. 1800, 1800A, 1800B, 1800C: Optical System 1810: Collimating lens; 1810a, 1820a: Lens body 1810b, 1820b: Prominent ear part; 1820: Fine-tuning positioning lens. 1860: Lens tube section; 1860a, 1860b: Adjustment holes 1870: First Window 1872: Second Window 1872a: The second window faces outwards. 1880a, 1880b, 1880c: Positioning rings 1890: Pairing interface carrier 1892: Pairing joint carrier presser foot; 1900: Long straight tube 1910, 1912: Adjustment holes; 1920: Light source module 1922: Uniform light source 1924: Light source holder 1930: Light source insertion hole; 1950: Monitoring device 1984: Alignment bushings 1984a, 1984b: Adjustment holes 2000A: Optical System; 2010: Lens Tube Section 2012, 2014: Adjustment Hole; 2020: First View Window 2022: Second Window 2022a: Second Window Facing Outwards 2030a, 2030b, 2030c: Positioning Circle 2040: Collimating Lens 2042: Fine-tuning positioning lens 2040a, 2042a: Biconvex lens 2040b, 2042b: Biconcave lenses 2040a1, 2040b1, 2042a1, 2042b1: Lens body 2040a2, 2040b2, 2042a2, 2042b2: Prominent ear 2310: First lens; 2320: Second lens 2321: Focusing surface; 2330: Circular shell 2331: Part One 2332: Part Two 2340: Lens tube section; 2350, 2350a: Pairing mating surface carrier 2352, 2352a: Docking body; 2353, 2353a: Protruding platform 2354, 2354a: Recess 2360: Alignment bushing 2410: Desktop (lower screen) 2420: Z-axis fine-tuning platform 2430: Desktop 2440: Camera 2450: Laser source; 2451: Fiber optic lens 2450a: Average light source; 2450b: Fiber optic cable 2460: Bracket 2461: Fixture 2462: Trench 2470, 2470a, 2470b, 2470c: XY fine-tuning platform 2471: Fixture part; 2472: Flat plate 2473: Stepper motor; 2474, 2475: Adjustment rod 2510: Third lens 2910: Lens 2920: Serrated grooves 3010: Male connector section; 3020: Female connector section 3030: Fiber optic cable; 3040: Fiber optic lens 3050: Copper wire; 3060: Bracket 3070: View Window; 3080: Lens Tube Section 3090: Alignment bushing; 3100: Positioning ring 3110: Blocking component; 3200: Biplex lens 3410: Fourth lens; 3510: Fine-tuning lens 3610: Package structure; 3612: Opening A: Object length; A0, A1: Direction of movement AX: Optical axis; B: Image length C: Center point (specific point) of the mating surfaces D: Spot diameter DA: Distance; D1, D2: Focal point D3, D4: Distance; F, F1, F2: Focal Point F3, F3': Point G: Zoom-out ratio H1, H2, H3: Height; K: Distance traveled L: Distance traveled L1, L2, L3, L1', L2', L3', L4': Lenses M: Total light intensity; MJ: Pairing junction P1, P2: Positions of the point light source Q1: Lens edge location point Q2: Lens spacing endpoint R: Circle; R1, R2: Chamfer Light intensity center S: Lens movement ratio of light spot SP1: Spot 1 SP2: Spot 2 SP3: Light spot three W1, W2, W3, W4: diameter a: Object distance b: Image distance bA, bA': displacement; b1: image length b2: The distance the third lens moved c: Diameter of collimating lens; d: Determined depth f: Lens focal length; f2', fA, fA': Focal length The position vector of the i-th point on the screen. The light intensity at point i on the screen y: The increase in length due to the shift from image distance to focal length Δ, ΔA, ΔA′, Δ2, Δ2′: displacement Detailed Implementation

[0063] Figure 1This is a schematic diagram of an expanded beam fiber optic connector system according to an embodiment of the present invention. The expanded beam fiber optic connector system 100 includes a female expanded beam fiber optic connector 110 and a male expanded beam fiber optic connector 120; for ease of description and without misunderstanding, they will be simply referred to as the female fiber optic connector 110 and the male fiber optic connector 120 below. Generally, in use, the male fiber optic connector 120 is inserted into the female fiber optic connector 110. Furthermore, Figure 1 The diagram shown is a simplified illustration of the system architecture, not a detailed structural diagram. For example... Figure 1 As shown, the female fiber optic connector 110 generally includes a first optical system 112, a first optical integrated circuit 114, and an alignment bushing 116. Similarly, the male fiber optic connector 120 generally includes a second optical system 122 and a second optical integrated circuit 124. The female fiber optic connector 110 and the male fiber optic connector 120 are similar in basic structure, but the female fiber optic connector 110 further includes an alignment bushing 116. The first optical integrated circuit 114 and the second optical integrated circuit 124 may each include structures made of optical fibers or waveguides. Furthermore, one of the male fiber optic connector 120 and the female fiber optic connector 110 can serve as an optical transmitter, while the other can serve as an optical receiver. Therefore, when the first optical integrated circuit 114 and the second optical integrated circuit 124 are considered as transmitters or receivers, they can be further configured to include a detector (as a photodetector), a transmitter (as an optical transmitter), optical fibers, or waveguides. The specific structure of the first optical integrated circuit 114 / second optical integrated circuit 124 will be further described in later embodiments. Furthermore, the aforementioned first optical integrated circuit 114 can be an integrated optical path, an integrated circuit, or an architecture including an integrated optical path and an integrated circuit; this invention is not particularly limiting. Similarly, the aforementioned second optical integrated circuit 124 can be an integrated optical path, an integrated circuit, or an architecture including an integrated optical path and an integrated circuit, or an optical fiber; this invention is not particularly limiting.

[0064] As an example, the male fiber optic connector 120 serves as the transmitter, and its second optical integrated circuit 124 has a transmitter capable of emitting a light beam. After being converted into a parallel beam 130 by the second optical system 122, the beam is incident on the first optical system 112 of the female fiber optic connector 110, which is positioned within the alignment sleeve 116. Subsequently, the parallel beam 130 is focused by the first optical system 112 onto the first optical integrated circuit 114, where it is received by the detector.

[0065] In this architecture, precisely aligning the light beam from the second optical system 122 to the focal point of the first optical system 112 and into the detector, fiber, or waveguide of the first optical integrated circuit 114, or conversely, the light emitted from the focal point of the first optical integrated circuit 114 into the first optical system 112 to generate a parallel beam 130, which is then incident on the second optical system 122 of the public fiber optic connector 120, requires extremely precise alignment. One of the key aspects of this invention is how to position (determine) the first optical system 112 and the first optical integrated circuit 114 (or the second optical system 122 and the second optical integrated circuit 124), that is, how to precisely align the detector, transmitter, fiber, or waveguide of the first optical integrated circuit 114 with the focal point of the first optical system 112. Furthermore, the same applies to the optical transmission architecture of the public fiber optic connector 120. This will be further explained below.

[0066] Figure 2A This is a schematic cross-sectional view of the optical system according to the first embodiment of the present invention, which illustrates the following. Figure 1 A partial schematic diagram of the first optical system 112. (See attached diagram.) Figure 2A As shown, the ideal parallel beam 130 passes through the collimating optical system 112A (constituting...) Figure 1 A portion of the first optical system 112 is focused onto a focusing plane 118 perpendicular to the optical axis AX. A surface 118A of a specific shape is then defined near the intersection of this focusing plane 118 and the optical axis AX. Moving this collimating optical system 112A or this surface 118A of a specific shape allows the incident parallel beam 130 to be focused onto a specific point C on this surface 118A.

[0067] Typically, this specific shape can be, for example, a circle, and this specific point C is, for example, the center point of the circle. Furthermore, by capturing images with a monitoring device 140 mounted behind the collimating optical system 112A (more specifically, surface 118A), the movement of the center point C as the collimating optical system 112A or the surface 118A of this specific shape moves can be observed. Here, the monitoring device 140 can be any commercially available camera, or any photographic device or apparatus capable of detecting the surface 118A and observing the movement of its center point C. Here, the surface 118A of this specific shape can be referred to as the matching join surface (MJ). The following description uses the camera 140 as an example, but is not intended to limit the embodiments of the present invention.

[0068] Regarding the mating interface MJ, further explanation is as follows. In an optical system, if it is necessary to attach another device to a suitable location, this is a specific surface perpendicular to the optical axis of the optical system, usually a circular surface. Find a specific point on this surface of the optical system's light source, usually the center point. Then, by combining this external device's specific point (usually the center point) with the optical system, correct alignment can be obtained. Generally, the optical axes of these two systems are usually in a straight line, but sometimes they are not. Furthermore, this mating interface MJ is often the focusing surface of the optical system, but not always.

[0069] Figure 2B This is a conceptual schematic diagram illustrating the adjustment of the center point of the mating surfaces according to an embodiment of the present invention. Figure 2B As shown, one of the key aspects of this invention is that by moving the collimating optical system 112A, the center point C of the mating surface MJ can be adjusted (moved) to coincide with the focal point F of the collimating optical system 112A. For example, one way to achieve this invention is to move the lens of the collimating optical system 112A in front of the mating surface MJ on a plane perpendicular to this optical axis AX (movement direction A0 as shown by the arrow in the figure) (how to move it will be explained in detail later), so that the focal point of the parallel beam 130 incident on the collimating optical system 112A is moved to the center point C of the circular mating surface MJ. Afterwards, the collimating optical system 112A is fixed in its lens barrel 150 (or frame, lens carrier, etc.).

[0070] In this embodiment of the invention, the lens of the collimating optical system 112A is not initially fixed directly to the lens barrel 150, but rather has some gaps, allowing the lens of the collimating optical system 112A to move along the moving direction A0. This operation can be observed using a camera or the like, which serves as a monitoring device 140. Once the focal point of the parallel beam 130 has moved to coincide with the center point C of the mating interface MJ, the lens of the collimating optical system 112A is then fixed to the lens barrel 150 using, for example, glue. Afterwards, as... Figure 1 Generally speaking, by placing (coupling) the first optical integrated circuit 114, which includes a detector, an emitter, an optical fiber, and a waveguide, on the mating interface MJ, it can be coupled to the collimating optical system 112A in a manner that aligns with the center point C.

[0071] In this way, the focused beam can enter the subsequently installed detector, transmitter, optical fiber, or waveguide. Conversely, because light is reversible, the light emitted from the detector, transmitter, optical fiber, or waveguide at this point will also be collimated into a parallel beam 130 by this collimating optical system 112A and emitted.

[0072] Back to Figure 1Generally, the light transmitted between the male fiber connector 120 and the female fiber connector 110 of the expanded beam fiber connector system 100 is a parallel beam 130. Even if some parts of the parallel beam 130 are misaligned, as long as it's not too severe, it will still have some effect. Furthermore, if alignment bushings 116 are used, the alignment of the transmitted light is almost certain. In this case, light loss during transmission is reduced, resulting in some power savings while maintaining good light transmission.

[0073] Next, the expanded beam fiber optic connector system of the present invention, particularly the structural schematic diagram of the female fiber optic connector, will be described through several embodiments. Furthermore, in the following description, "up," "down," "left," and "right" refer only to the relative positions shown in the accompanying drawings, and not to definitive positions. If the orientation of the drawings changes, the up / down and left / right directions will also change accordingly. These directions do not absolutely limit the embodiments of the present invention and are the same in all the following embodiments, as will be stated here first. Furthermore, unless otherwise specified, the terms "lateral direction" and "horizontal direction" generally refer to the planar extension direction perpendicular to the optical axis of the lens / lens group. Additionally, unless otherwise specified in the following description, all cross-sections, outlines, or similar terms refer to the shape obtained by cutting along the diameter direction of the solid object.

[0074] First Embodiment Figure 3A This is a schematic diagram of the structure of a female optical fiber connector according to an embodiment of the present invention. Figure 3A As shown, the female fiber optic connector 200A includes an optical system 210A and an integrated circuit 250A. For ease of explanation, in this embodiment, a collimating lens 212 is used as an example of the lens system in the optical system 210A. In this example, a single-lens collimating lens 212 is used as an example; examples of collimating lenses comprising multiple lenses will be described later. The collimating lens 212 is an example of a focusing lens. Furthermore, according to embodiments of the present invention, the lens system of the optical system 210A may further include at least one fine-tuning positioning lens (not shown, see other embodiments described later). The collimating lens 212 can focus a parallel beam of light at its focal point, or can convert light emitted from its focal point into a parallel beam of light.

[0075] Integrated circuit 250A can be composed of a detector and a transmitter. The detector and transmitter constituting integrated circuit 250A are configured to be aligned with the center point C of the mating interface MJ shown in Figure 2, that is, the focal point of the collimating lens 212 in the lens system of optical system 210A as described above, or the center point of the detector / transmitter. The details of the alignment method will be explained in detail later.

[0076] like Figure 3AIn the example shown, the optical system 210A includes at least a lens barrel 216, a collimating lens 212, positioning rings 214a and 214b, a first viewing window 218, and a second viewing window 219. Furthermore, in this and the following embodiments, the first viewing window is used to protect the lens. In a clean machine room environment, the first viewing window can be omitted. The collimating lens 212 also includes protruding ears 212b, which are formed at both ends of the lens body 212a of the collimating lens 212 in the diametrical direction. The collimating lens 212 is fixed and positioned to the lens barrel 216 by the positioning rings 214a and 214b. The lens barrel 216 and the positioning rings 214a and 214b are essentially hollow cylindrical bodies, and the outer diameter of the positioning rings 214a and 214b is configured to fit into the inner diameter of the lens barrel 216.

[0077] In addition, positioning rings 214a and 214b clamp the protruding ear 212b of collimating lens 212 from above and below, respectively, so that collimating lens 212 can be fixed to lens barrel 216 via positioning rings 214a and 214b.

[0078] Furthermore, the collimating lens 212 can be made of transparent plastic or polymer material to facilitate the formation of the protruding ear 212b. The collimating lens 212 can be further coated with an anti-reflective coating.

[0079] It should be noted that the protruding ear 212b of the collimating lens 212 is one of the main features constituting the present invention. The length of the protruding ear 212b in the lateral direction (perpendicular to the optical axis) can extend to the lens barrel 216. The lens barrel 216 has a hole (not shown here, see the embodiment described later) at the position corresponding to the protruding ear 212b, and the protruding ear 212b of the collimating lens 212 can pass through the hole in the lens barrel 216.

[0080] During the assembly of the optical system 210A, the protruding ear 212b is temporarily fixed to the lens barrel portion 216. According to the detailed description below, the assembler can use a suitable tool to touch the protruding ear 212b, allowing it to move in the lateral direction (perpendicular to the optical axis) (see...). Figure 2B The movement direction A0). After the center point of the mating interface MJ is aligned with the focal point of the collimating lens 212, the collimating lens 212 is fixed to the lens barrel 216 using adhesive or the like. In other words, the present invention uses the protruding ear 212b to move the collimating lens 212 in the horizontal direction (perpendicular to the optical axis) to determine the center point of the mating interface MJ of the optical system 210A and the optical integrated circuit, so that the optical system 210A and the integrated circuit 250A can be accurately aligned. The detailed method will be described in detail later.

[0081] Furthermore, the optical system 210A may further include a first window 218 and a second window 219. The first window 218 covers the first opening of the lens barrel 216, while the second window 219 covers the second opening side of the lens barrel 216 (towards the optical integrated circuit). The first window 218 and the second window 219 can cover both sides of the lens barrel 216, thereby protecting the collimating lens 212 inside the lens barrel 216. The materials of the first window 218 and the second window 219 may be, for example, transparent glass, polymer materials, or plastics, and may be further coated with an anti-reflective film.

[0082] exist Figure 3A In the example shown, the first window 218 and the second window 219 are embedded within the lens barrel portion 216, with the outward-facing portion of the first window 218 aligned with the upper surface of the lens barrel portion 216, and the outward-facing portion of the second window 219a aligned with the lower surface of the lens barrel portion 216. However, if the positioning rings 214a and 214b are aligned with the upper and lower surfaces of their respective lens barrel portions 216, the first window 218 and the second window 219 can respectively cover the upper and lower surfaces of the lens barrel portion 216.

[0083] The second window 219 has a second window outward 219a, which can serve as a focusing surface, but also as a mating interface MJ. The second window outward 219a, as the mating interface MJ, is configured as an interface coupled to the integrated circuit 250A.

[0084] In addition, the optical system 210A also includes an alignment bushing 230, which is a hollow cylinder. The height of the alignment bushing 230 is greater than that of the lens barrel portion 216, allowing one end of the lens barrel portion 216 to be accommodated therein, while the space on the other end can accommodate the male fiber optic connector (see reference). Figure 1 Insert the diagram.

[0085] According to an embodiment of the present invention, the alignment bushing 230 may also have an alignment bushing chamfer 230a formed on the inner end of one end. The alignment bushing chamfer 230a allows the male fiber optic connector (not shown) to be smoothly inserted into the female fiber optic connector 200A via one end of the alignment bushing 230.

[0086] Furthermore, as shown in the figure, the package 240 integrally encapsulates the various components (also referred to as lenses) of the optical system 210A, such as the alignment bushing 230, the lens barrel 216, and the collimating lens 212. As an example, the height of the package 240 may be equal to or greater than the height of the alignment bushing 230.

[0087] Furthermore, in this embodiment, the integrated circuit 250A includes an integrated circuit body 252a, a mounting base 256, and an integrated circuit unit 254a. For example... Figure 3AAs shown, the mounting base 256 is disposed on the upper surface of the integrated circuit body 252a and includes a receiving area 258a. The receiving area 258a is configured to accommodate the integrated circuit unit 254a. The dimensions (e.g., diameter) of the mounting base 256 are approximately equal to the outer diameter of the lens barrel portion 216.

[0088] In this embodiment, the integrated circuit unit 254a can be a detector or a transmitter. When the female fiber optic connector 200A emits a light beam to the male fiber optic connector, the integrated circuit unit 254a can be a transmitter to emit the light beam. In this case, the light beam emitted from the transmitter is converted into a parallel beam by the collimating lens 212 of the optical system 210A before being incident on the collimating lens of the male fiber optic connector. Conversely, when the female fiber optic connector 200A receives a parallel light beam from the male fiber optic connector, the integrated circuit unit 254a can be a detector to detect the light beam focused by the collimating lens 212. In this case, the parallel light beam emitted from the transmitter by the collimating lens of the male fiber optic connector is focused by the collimating lens 212 of the lens system in the optical system 210A before being incident on the detector.

[0089] Figure 3B It is based on Figure 3A The diagram shows a structural schematic of a variation of the female optical fiber connector. Figure 3B and Figure 3A The difference lies in the architecture of the integrated circuit. Therefore, Figure 3A and Figure 3B The same symbols in the text essentially represent the same components, and their explanations are omitted here. Only the differences between the two are explained here.

[0090] like Figure 3B As shown, the female fiber optic connector 200B and Figure 3A The difference between the female fiber optic connectors 200A and 250B lies in that the integrated circuit unit 254b of the integrated circuit 250B is not formed on the upper surface of the integrated circuit body 252b, but is embedded below the upper surface of the integrated circuit body 252b. In this embodiment, a receiving area (or receiving hole) 258b is provided below the upper surface of the integrated circuit 250B, and the receiving area 258b is similarly configured to accommodate the integrated circuit unit 254b. The integrated circuit unit 254b is substantially the same as the integrated circuit unit 254a. Figure 3A The explanation can also be applied to integrated circuit unit 254b.

[0091] also, Figure 3A The optical system 210A and Figure 3B The optical system architecture of the 210B is basically the same, but there are still some minor differences. For example... Figure 3A and Figure 3BAs shown, the difference between integrated circuits 250A and 250B is that integrated circuit cells (detectors or transmitters) 254a and 254b are located on the upper surface of integrated circuit body 252a and below the upper surface of integrated circuit body 252b, respectively. Therefore, in Figure 3A The optical system 210A and Figure 3B In the optical system 210B, Figure 3A The lower surface of the lens barrel 216 is recessed inward from the lower surface of the alignment bushing 230 to protect the integrated circuit unit 254a. Conversely, Figure 3B The lower surface of the lens barrel 216 is substantially aligned with the lower surface of the alignment bushing 230 because the integrated circuit cell 254b of the integrated circuit 250B is embedded. Therefore, Figure 3B The lower surface of the lens barrel 216 does not need to be recessed inward from the lower surface of the alignment bushing 230. However, depending on the specific structure and dimensions of the integrated circuit 250B, even if the integrated circuit cell 254b is embedded, the lens barrel 216 can be designed as follows: Figure 3A The structure is recessed inward from the lower surface of the alignment bushing 230.

[0092] In addition to the differences mentioned above Figure 3B The optical system 210B is basically the same as Figure 3A The optical system is the same as that of the 210A, and is designed for... Figure 3A All descriptions of the optical system 210A also apply to Figure 3B The optical system 210B.

[0093] Figure 3C It is based on Figure 3A The diagram shows a variation of the female fiber optic connector 200A. Female fiber optic connector 200C and... Figure 3A or Figure 3B The difference between the female fiber optic connectors 200A and 200B is that they do not use integrated circuits 250A and 250B, but rather integrated optical path 250C.

[0094] In this example, the integrated optical path 250C includes an integrated optical path body 252c, a receiving area (receiving hole) 258c disposed in the integrated optical path body 252c, and an integrated optical path unit 254c. Here, the integrated optical path unit 254c can be a waveguide for transmitting optical signals. The receiving area 258c is used to accommodate the waveguide that serves as the integrated optical path unit 254c.

[0095] Apart from the differences described above, Figure 3C The optical system 210C is basically the same as Figure 3A The optical system is the same as or similar to that of the 210A, and is designed for Figure 3A All descriptions of the optical system 210A also apply to Figure 3CThe optical system 210C.

[0096] Figure 3D and Figure 3E It is based on Figure 3A and Figure 3B A schematic diagram of another variation of the female optical fiber connector shown. Figure 3D and Figure 3E The structural schematic diagrams of two female fiber optic connectors, 200D and 200E, are shown respectively. Figure 3D and Figure 3E In, with Figure 3A and Figure 3B The same symbols in the text essentially represent the same components, and their explanations are omitted here. Only the differences between the two are explained here.

[0097] Based on the above Figures 3A to 3C The description states that during the fabrication of package 240, a circular hole is pre-drilled so that integrated circuit units (detectors or transmitters) 254a and 254b and integrated optical path unit (waveguide) 254c can be positioned at the center of this circular hole. Furthermore, the female fiber optic connectors 200A, 200B, and 200C here are connected via... Figure 2B Positioning is accomplished in the manner described, so inserting the optical system into the circular hole of the package 240 will allow the focal point to fall on the center point of the end face of the integrated circuit unit (detector or transmitter) 254a, 254b or the integrated optical path unit (waveguide) 254c.

[0098] Similarly, the following illustrative examples are the same as those above. Figure 3D and Figure 3E The female fiber optic connectors 200D and 200E shown are also via... Figure 2B The positioning method described herein completes the positioning of the structure. The detectors or transmitters, which are integrated circuit units 254d and 254e, are also positioned at the center point of the upper surface of the integrated circuit bodies 252d and 252e during fabrication.

[0099] like Figure 3D As shown, the female fiber optic connector 200D also includes an optical system 210D and an integrated circuit 250D. The difference between the optical system 210D of the female fiber optic connector 200D and the optical system 210A of the above embodiment is that the lower surface 216a of the lens barrel portion of the optical system 210A extends further from the lower surface 230c of the alignment bushing; that is, the alignment bushing 230 does not cover the entire lens barrel portion 216. Although the structure is slightly different, the functions of each part of the optical system 210D are the same as those of the optical system 210A. Here, the encapsulation of the optical system 210A is omitted; however, an encapsulation can still be used to seal the optical system 210D.

[0100] Similarly, Figure 3DThe optical system of the 210D is basically the same as Figure 3A The optical system is the same as or similar to that of the 210A, and is designed for Figure 3A All descriptions of the optical system 210A also apply to Figure 3D The optical system 210D.

[0101] also, Figure 3D The integrated circuit 250D shown may further include a housing 270 and a waterproof and bend-resistant portion 260; this structure can also be applied to... Figures 3A to 3B The integrated circuits 250A and 250B are shown. In this embodiment, the integrated circuit body 252d may further have an extension 253. The extension 253 may be, for example, an optical fiber, waveguide, or wire (for transmitting electrical signals) connected to the integrated circuit body 252d. Furthermore, as an example, the housing 270 of the integrated circuit 250D is configured as a hollow cylindrical structure that can accommodate the integrated circuit body 252d, and the lower surface of the housing 270 has a hole 270c through which the extension 253 can pass.

[0102] Furthermore, the upper part of the housing 270 is structured as an opening, allowing the integrated circuit body 252d to be inserted and housed therein. An opening 270a is formed on the upper surface 270b of the housing 270, which extends downward from the upper surface 270b of the housing 270 to a predetermined depth along the axis of the housing 270.

[0103] In this example, the predetermined depth is approximately equal to the length of the lens barrel 216 of the optical system 210D extending downward from the lower surface 230c of the alignment bushing. Furthermore, the radial width (thickness) of the opening 270a is approximately the same as the radial width of the lens barrel 216 of the optical system 210D. Additionally, the radial width of the upper surface 270b is also approximately the same as the radial width (thickness) of the alignment bushing 230. With this structure, when the integrated circuit 250D is inserted into the optical system 210D in the direction of the arrow, the downward extension of the lens barrel 216 will be inserted into the opening 270a of the housing 270, and the upper surface 270b of the housing 270 will abut against the lower surface 216a of the lens barrel of the optical system 210D.

[0104] Thus, the optical system 210D can be tightly integrated with the integrated circuit 250D. At this time, the detector or transmitter, which is the integrated circuit unit 254d, can contact or approach the second window facing outwards 219a, thereby further aligning with the center point of the mating interface MJ of the optical system 210D. Furthermore, in this embodiment, because the integrated circuit 250D is inserted into the optical system 210D using a latch-like mechanism, it is not necessary to form a similar... Figures 3A to 3C The alignment bushing shows a chamfer 230b. Of course, chamfers can also be formed under this structure to facilitate insertion; the invention is not particularly limited thereto.

[0105] also, Figure 3D Although the example shows integrated circuit cell 254d directly attached to the upper surface of integrated circuit body 252d, it is also possible to further adopt, such as Figure 3A The mounting bracket 256 shown is used to accommodate the integrated circuit unit 254d.

[0106] Furthermore, regarding the integrated circuit body 252d and extension 253 of the integrated circuit 250D, a waterproof and anti-bending portion 260 can be further provided between them and the housing 270. The waterproof and anti-bending portion 260 can prevent water from entering the integrated circuit body 252d and can reinforce the extension 253 to prevent bending.

[0107] In addition, such as Figure 3E As shown, the female fiber optic connector 200E also includes an optical system 210E and an integrated circuit 250E. The optical system 210E of the female fiber optic connector 200E is roughly the same as... Figure 3D The optical system is the same as that of the 210D. Therefore, regarding... Figure 3D The description of optical system 210D applies to optical system 210E.

[0108] also, Figure 3E The integrated circuit 250E shown is... Figure 3D The only difference between the integrated circuit 250D and the integrated circuit 250E is that the integrated circuit cell 254e is embedded, that is, the integrated circuit cell 254e is embedded in the receiving area 258e of the integrated circuit body 252e. Apart from this, regarding... Figure 3D The description of the 250D integrated circuit is applicable. Figure 3E The integrated circuit 250E.

[0109] In various variations of the above embodiments, the center point of the mating interface MJ of the optical system can be aligned with its focal point, thereby allowing the detector, sensor, optical fiber or waveguide, etc., to be precisely aligned with the optical system.

[0110] Additionally, if needed, the detectors, sensors, or waveguides mentioned in the above examples can also be coated with an anti-reflective film on their end faces. Furthermore, in the following examples, if a detector, sensor, or waveguide is mentioned, even if not specifically stated otherwise, the detector, sensor, or waveguide can also be coated with an anti-reflective film on its end face.

[0111] Second Embodiment Figure 4 This is a cross-sectional structural schematic diagram of an optical system according to a second embodiment of the present invention. In this schematic diagram, the same reference numerals are used to denote... Figure 2BIdentical or similar components. These components serve essentially the same function, so their specific descriptions can be found in [reference needed]. Figure 2B Only the differences will be explained here.

[0112] In the first embodiment, as Figure 2A and Figure 2B The method for moving the center point C of the mating surface MJ is to move the collimating optical system 112A so that the center point C of the mating surface MJ is aligned with the focal point F. In the second embodiment, a mating surface carrier 160 is further provided to move the center point C of the mating surface MJ. In this embodiment, the mating surface carrier 160 can be basically structured as a hollow cylinder, that is, an annular mating surface carrier. Figure 4 As shown, the mating surface MJ is placed on the mating surface carrier 160. By moving the mating surface carrier 160 in the moving direction A1, the center point C of the mating surface MJ can be moved to coincide with the focal point F.

[0113] In this embodiment, as detailed in the embodiments below, the mating surface carrier 160 is not initially fixed directly to the lens barrel 150, but rather has some gaps, allowing it to move along the movement direction A1. This operation can be observed using a camera or similar device, such as the monitoring device 140 described above. Once the center point C of the mating surface MJ aligns with the focal point of the parallel beam 130, the mating surface carrier 160 is then fixed to the lens barrel 150 using, for example, glue. Afterwards, as... Figure 1 Generally speaking, by placing (coupling) the first optical integrated circuit 114, which includes a detector, an emitter, an optical fiber, and a waveguide, on the mating interface MJ, it can be coupled to the collimating optical system 112A in a manner that aligns with the center point C.

[0114] In this way, the focused beam can enter the detector, fiber optic cable, or waveguide that is subsequently installed. Conversely, because light is reversible, the light emitted from the transmitter, fiber optic cable, or waveguide at this point will also be collimated into a parallel beam 130 by this collimating optical system 112A and emitted.

[0115] Furthermore, in the structure described in the following explanation, Figure 5A , Figure 5B and Figure 5C It is suitable for detectors or transmitters. Figure 5D It is suitable for fiber optics. Also, Figures 5A to 5D The structure shown is already in use Figure 4 The state after adjustment is completed using the method described above. Furthermore, if necessary, in this example, the collimating optical system 112A can be moved to improve accuracy.

[0116] Figure 5AThis is a schematic diagram of the optical system of the female fiber optic connector according to an embodiment of the present invention. Figure 5B yes Figure 5A A partially enlarged view of the mating interface carriers shown. Figure 5C yes Figure 5A A three-dimensional view of the mating interface carriers shown. (See diagram below.) Figure 5A As shown, the optical system 310A is basically structurally similar to... Figures 3A to 3E The optical systems 210A to 210E shown are similar. For ease of explanation, this embodiment also uses a collimating lens 312 as an example of optical system 310A. In this example, a single collimating lens 312 is used for illustration; similarly, the lens system of optical system 310A may also include a collimating lens composed of multiple lenses. Furthermore, the lens system of optical system 310A in this embodiment may also further include at least one fine-tuning positioning lens (not shown, see other embodiments described later). As in the previous embodiments, the collimating lens 312 can focus a parallel beam at its focal point, or can convert light emitted from its focal point into a parallel beam.

[0117] like Figure 5A In the example shown, the optical system 310A also includes at least a lens barrel 316, a collimating lens 312, positioning rings 314a and 314b, a first viewing window 318, and a second viewing window 319. The collimating lens 312 also includes a protruding ear 312b, which is formed around the lens body 312a of the collimating lens 312 (in the circumferential direction of the lens and perpendicular to the optical axis of the lens) and surrounds the collimating lens 312. The collimating lens 312 is fixed and positioned to the lens barrel 316 by the positioning rings 314a and 314b. The lens barrel 316 and the positioning rings 314a and 314b are essentially hollow cylindrical bodies, and the outer diameter of the positioning rings 314a and 314b is configured to fit into the inner diameter of the lens barrel 316.

[0118] In addition, positioning rings 314a and 314b clamp the protruding ear 312b of collimating lens 312 from above and below, respectively, so that collimating lens 312 can be fixed to lens barrel 316 via positioning rings 314a and 314b.

[0119] Furthermore, similar to the first embodiment, the collimating lens 312 can be made of transparent plastic or polymer material to facilitate the formation of the protruding ear 312b. Also similar to the first embodiment, the collimating lens 312, the first viewing window 318, and the second viewing window 319 can be further coated with an anti-reflective film.

[0120] Furthermore, the protruding ear 312b of the collimating lens 312 is similar to that of the first embodiment. Figure 3A The protruding ear portion 212b has the same or similar structure and function. Therefore, the details of this protruding ear portion 312b can be found in [reference needed]. Figure 3AThe description of the protruding ear 212b is omitted here.

[0121] Furthermore, the first window 318, second window 319, lens barrel 316, positioning rings 314a and 314b, alignment bushing 330, and their related structures of optical system 310A are basically the same as or similar to those of optical system 210A, including the first window 218, second window 219, lens barrel 216, positioning rings 214a and 214b, and alignment bushing 230. Details can be found in [reference needed]. Figure 3A Descriptions of each component are omitted here.

[0122] like Figure 5A As shown, the difference between the optical system 310A and optical system 210A, etc., in this embodiment is that the optical system 310A further includes a mating surface carrier 360. The mating surface carrier 360 is used to hold the mating surface MJ. The mating surface carrier 360 can move in a direction perpendicular to the optical axis of the optical system 310A, thereby allowing the center point C of the mating surface MJ to move (see...). Figure 4 (and its explanation).

[0123] As explained above, to ensure precise alignment between the optical system of the female fiber optic connector and the optical integrated circuit, the above embodiment involves moving the collimating lens 212 of the optical system 210A, etc., in the lateral direction (perpendicular to the optical axis) so that the center point C of the mating surface MJ is aligned with the focal point of the collimating lens 212. In this embodiment, the mating surface MJ is further moved in the lateral direction (perpendicular to the optical axis) to achieve even more precise alignment. It should be noted that in the above description, Figure 5A What is shown is that it has been passed Figure 4 The state after the described method has been adjusted.

[0124] like Figure 5B and Figure 5C As shown, the mating interface carrier 360 can be basically designed as a hollow cylinder. The mating interface carrier 360 has a central hole and serves as an optical integrated circuit (such as...). Figure 6A The insertion hole 380 (as shown in the figure) has an insertion hole profile in a cross-section along the diametrical direction, which matches the cross-sectional profile of the optical integrated circuit to be inserted. Furthermore, to facilitate the insertion of the optical integrated circuit into the insertion hole 380, the insertion hole 380 of the mating interface carrier 360 further forms a chamfer 361 on the side facing the mounting optical integrated circuit.

[0125] As an example, the mating interface carrier 360 may include a mating interface carrier body 360a and a carrier flange 360b, which are integrally formed. Furthermore, the cross-sectional profile of the insertion hole 380 can be designed according to the shape (cross-sectional profile, cut along the diameter) of the optical integrated circuit to be inserted. The surface of the carrier flange 360b side of the mating interface carrier 360 can abut against the second viewing window outward 319a (i.e., the mating interface MJ), and the cylindrical structure of the mating interface carrier body 360a extends along the optical axis below the lower surface of the lens barrel portion 316.

[0126] Furthermore, the optical system 310A further includes a mating surface carrier foot 350 for securing the mating surface carrier 360. The mating surface carrier foot 350 has an upper opening and integrally formed wall portion 350a and bottom portion 350b. Figure 5B As shown, the bottom 350b has a lower opening, the diameter of which is slightly larger than the outer diameter of the mating surface carrier body 360a of the mating surface carrier 360, allowing the mating surface carrier body 360a to be inserted into the lower opening of the bottom 350b. The mating surface carrier body 360a is inserted from the upper opening and extends from the lower opening. After the mating surface carrier body 360a is inserted, the carrier flange 360b of the mating surface carrier 360 abuts against the bottom 350b, thereby temporarily fixing the mating surface carrier 360 onto the mating surface carrier pressure foot 350. Then, the mating surface carrier 360 and the mating surface carrier pressure foot 350 are placed together inside the optical system lens barrel 316, abutting against the outward-facing second viewport 319a.

[0127] At this point, the mating surface carrier foot 350 and the mating surface carrier 360 are not completely sealed; there is a slight gap 370 between them. After the optical system 310A is assembled, there is some looseness between the mating surface carrier foot 350 and the mating surface carrier 360. Therefore, during the adjustment phase, through this gap 370, the assembler can use a suitable tool to move the mating surface carrier 360 in the direction perpendicular to the optical axis. Thus, through this gap 370, the portion of the mating surface carrier body 360a extending out of the lens barrel 316 can be moved, causing the center point C of the mating surface MJ to move, thereby adjusting the center point to align with the focal point of the collimating lens 312 of the optical system 310A. Afterwards, the mating surface carrier foot 350 and the mating surface carrier 360 are fixed together using adhesive or the like.

[0128] Furthermore, similar to the previous embodiment, one end of the alignment bushing 330 of the optical system 310A has an alignment bushing chamfer 330a. The alignment bushing chamfer 330a allows the male fiber optic connector (not shown) to be smoothly inserted into the optical system 310A of the female fiber optic connector via one end of the alignment bushing 330. Similarly, if necessary, an alignment bushing chamfer 330b can also be formed at one end of the alignment bushing 330 to facilitate the insertion of subsequent components during assembly.

[0129] Furthermore, if this optical system 310A is used with a public fiber optic connector, then the alignment bushing 330 is not required.

[0130] Figure 5D This is an example Figure 5A A schematic diagram illustrating structural changes in an optical system. Figure 5D The structure of the optical system 310B shown is basically the same as Figure 5A The optical system 310A shown has a similar structure, the only difference being that the mating surface carrier 360' also includes a mating surface carrier body 360'a and a carrier flange 360'b. Similarly, in Figure 5D The same reference numerals are used for components that are the same or similar to those in optical system 310A. The differences are explained below.

[0131] Figure 5D The mating interface carrier 360' shown is... Figure 5A The differences between the mating surface carriers 360 shown are mainly in the structure or cross-sectional profile of the insertion hole 380' within the mating surface carrier 360'. (Comparison) Figure 5A and Figure 5B It is obvious that Figure 5A The diameter of the insertion hole 380 shown is almost the same from one end to the other. Figure 5D The diameter of the insertion hole 380' shown is basically tapering from one end to the other. Here, Figure 5A The insertion hole 380 shown is suitable for inserting an integrated circuit, such as a detector or transmitter, which is used as an optical integrated circuit. Figure 5D The insertion hole 380' shown is suitable for inserting optical fibers.

[0132] In addition, although Figure 5D It is not explicitly shown, but there is still a gap between the mating contact carrier pressure foot 350 and the mating contact carrier 360'. Figure 5B The gap 370 shown is for adjusting the center point of the mating surface MJ, and the adjustment method is the same as... Figure 5B Since the description is the same as the one given, it will be omitted here.

[0133] Furthermore, if the aforementioned optical system 310A or optical system 310B is used in a male optical fiber connector, the alignment bushing 330 structure is not required.

[0134] Figures 6A to 6C According to this embodiment, the following are used: Figure 5A A schematic diagram of the architecture of the female fiber optic connector of the optical system. (See diagram below.) Figure 6A As shown, the female fiber optic connector 300A includes an optical system 310A and an integrated circuit 400A. The specific structure and description of the optical system 310A can be found above. Figures 5A to 5B The integrated circuit 400A includes a housing 400 and an integrated circuit body 420.

[0135] Figure 6B The structural relationship between the optical system 310A and the housing 400 is further illustrated. For example... Figure 6A and Figure 6B As shown, the shell 400 is basically a hollow cylindrical structure, with its upper part (relative to) Figure 6B The housing 400 is configured with a first opening 400e. The diameter of the first opening 400e is approximately equal to the outer diameter of the lens barrel portion 316 of the optical system 310A. This allows the housing 400 to be inserted into the optical system 310A.

[0136] by Figure 6B For reference, the first opening 400e of the housing 400 extends downward from the upper surface 400d of the housing 400 along the axis of the housing 400 to a predetermined depth reaching the bottom surface 400g. The bottom surface 400g has a second opening 400f. The diameter of the second opening 400f is approximately the same as that of the mating surface carrier body 360a of the mating surface carrier 360 (see...). Figure 5B The outer diameters of the two openings are equal. Furthermore, the diameter of the second opening 400f is also larger than the diameter of the insertion hole 410. This allows the mating interface carrier body 360a to be inserted into the second opening 400f of the housing 400.

[0137] In this example, the predetermined depth of the upper surface 400d to the bottom surface 400g is approximately equal to the length of the lens barrel portion 316 of the optical system 310A extending downward from the lower surface 330c of the alignment bushing. Furthermore, the radial width (or thickness) of the upper surface 400d is approximately the same as the radial width (or thickness) of the alignment bushing 330. The sum of the radial width of the lower surface 316a of the lens barrel portion 316 and the radial width of the lower surface 350c of the mating surface carrier foot is approximately equal to the radial width of the bottom surface 400g. Thus, with this structure, after the mating surface carrier body 360a is inserted into the second opening 400f of the housing 400 in the direction of the arrow, the upper surface 400d of the housing 400 will abut against the lower surface 330c of the alignment bushing of the optical system 310A, while the lower surface 316a of the lens barrel portion and the lower surface 350c of the mating surface carrier foot will abut against the bottom surface 400g of the housing 400.

[0138] like Figure 6A and Figure 6B As shown, the housing 400 further includes an outer shell 400a, an inner shell 400b, and a cover 400c. The inner shell 400b is fitted inside the outer shell 400a, with its upper surface abutting the lower surface of the mating surface carrier body 360a, and its lower surface abutting the waterproof and bend-resistant portion 430 described later. The inner shell 400b is also a hollow cylindrical structure with an insertion hole 410. The axes of the insertion hole 380 on the optical system 310A side and the insertion hole 410 on the inner shell 400b are aligned. The cross-sectional profile of the integrated circuit body 420 described later is consistent with the cross-sectional profile formed by the insertion holes 380 and 410, so the integrated circuit body 420 can be inserted into the insertion holes 380 and 410 and fixed inside the housing 400, and aligned with the center point of the mating surface MJ of the optical system 310A. Furthermore, although it is distinguished here as outer shell 400a and inner shell 400b, in reality, outer shell 400a and inner shell 400b can be formed as a single piece.

[0139] In this embodiment, the cross-sectional profile of the integrated circuit body 420 includes a narrow portion 426, a wide portion 428, an extension portion 422, and a corner portion 424 connecting the narrow and wide portions. An integrated circuit unit 440 is disposed on the upper surface of the narrow portion 426. Therefore, the cross-sectional profiles of the insertion holes 380 and 410 can be designed to match the cross-sectional profile of the integrated circuit body 420. Of course, in this embodiment, the shape, size, and dimensions of the cross-sectional profile of the integrated circuit body 420 are not particularly limited. Therefore, the structural design of the housing 400 is not particularly limited, as long as the integrated circuit body 420 can be inserted into the housing 400 and further into the optical system 310A.

[0140] Furthermore, the cover 400c of the housing 400 has a hole into which an extension (such as an optical fiber, waveguide, or wire) 422 of the integrated circuit body 420 can be inserted. Additionally, before inserting the integrated circuit body 420 into the hole, a waterproof and bend-resistant part 430 can be inserted to prevent external moisture from entering the housing 400 or to prevent the extension 422 from bending or deforming. Then, the cover 400c, with the integrated circuit body 420 and the waterproof and bend-resistant part 430 mounted on it, is placed over the lower opening of the housing 400 to seal the housing 400.

[0141] In this embodiment, the detector or transmitter, which serves as the integrated circuit unit 440, is disposed on the upper surface of the integrated circuit body 420. When the optical system 310A is tightly coupled to the housing 400 of the integrated circuit 400A in the manner described above, the detector or transmitter, which serves as the integrated circuit unit 440, can contact or approach the second viewing window outward 319a, thereby further aligning with the center point of the mating interface MJ of the optical system 310A.

[0142] Furthermore, in this embodiment, only the detector or transmitter, which serves as the integrated circuit unit 440, is shown as being disposed on the upper surface of the integrated circuit body 420. Of course, other methods could also be used. Figure 3A The present invention does not specifically limit the manner in which the fixing base 256 is shown.

[0143] Furthermore, in this embodiment, since the integrated circuit 400A is inserted into the optical system 310A using a latch-like mechanism, it is not necessary to form a similar alignment bushing 330. Figure 5A The alignment bushing shows a chamfer 330b. Of course, chamfers can also be formed under this structure to facilitate insertion; the invention is not particularly limited in this respect. Furthermore, the alignment bushing 330 can be removed to create a male fiber optic connector.

[0144] Figure 6C It is a drawing Figure 6A One example of a variation. For example... Figure 6C As shown, the female fiber optic connector 300B includes an optical system 310A and an integrated circuit 400B. Figure 6A and Figure 6C The structures of the two are basically the same, the only difference being that the detector or transmitter, which serves as the integrated circuit unit 440', is embedded below the upper surface of the integrated circuit body 420. Apart from this difference, all other components are identical. Figure 6A , Figure 6B As explained above, the explanation is omitted here.

[0145] In addition, Figures 6A to 6C In the structure shown, before the positioning is completed, the mating interface carrier 360 needs to be finely adjusted and moved. Figure 6BThe diameter of the opening 400f shown is also slightly larger than the outer diameter of the mating surface carrier body 360a of the mating surface carrier 360. Meanwhile, as... Figure 6C As shown, the inner diameter of the inner shell 400b is also slightly larger than the diameter of the integrated circuit body 420.

[0146] Figures 6D to 6F According to this embodiment, the following are used: Figure 5D A schematic diagram of the male and female fiber optic connectors of an optical system. (See diagram below.) Figure 6D As shown, the female fiber optic connector 300C includes an optical system 310B and an integrated optical path 400C or optical fiber. The specific structure and description of the optical system 310B can be found above. Figure 5D The description states that the integrated optical path 400C or optical fiber includes a housing 400' and an integrated optical path body 450 or optical fiber.

[0147] Figure 6E The structural relationship between the optical system 310B and the housing 400' is further illustrated. For example... Figure 6D and Figure 6E As shown, the shell 400' is basically a hollow cylindrical structure, with its upper part (relative to) Figure 6E The housing 400' is configured with a first opening 400e'. The diameter of the first opening 400e' is approximately equal to the outer diameter of the lens barrel portion 316 of the optical system 310B. This allows the housing 400' to be inserted into the optical system 310B.

[0148] by Figure 6E For reference, the first opening 400e' of the housing 400' extends downward from the upper surface 400d' of the housing 400' along the axis of the housing 400' to the bottom surface 400g'. The bottom surface 400g' has a second opening 400f'. The diameter of the second opening 400f' is also larger than the diameter of the insertion holes 410' and 412', and the diameter of the second opening 400f' is also slightly larger than the outer diameter of the mating surface carrier body 360'a. Thus, the mating surface carrier body 360'a can be inserted into the second opening 400f' of the housing 400'.

[0149] In this example, such as Figure 6EAs shown, this predetermined depth d is approximately equal to the length of the lens barrel 316 extending downward from the lower surface 330c of the alignment bushing. Furthermore, the radial width (or thickness) of the upper surface 400d' is approximately the same as the radial width (or thickness) of the alignment bushing 330. The sum of the radial width of the lower surface 316a of the lens barrel and the radial width of the upper surface 350c of the mating surface carrier foot is approximately equal to the radial width of the bottom surface 400g'. Thus, with this structure, after the mating surface carrier body 360'a is inserted into the second opening 400f' of the housing 400' in the direction of the arrow, the upper surface 400d' of the housing 400' will abut against the lower surface 330c of the alignment bushing of the optical system 310B, while the lower surface 316a of the lens barrel and the upper surface 350c of the mating surface carrier foot will abut against the bottom surface 400g' of the housing 400'.

[0150] like Figure 6D and Figure 6E As shown, the housing 400' further includes an outer shell 400a', an inner shell 400b', and a cover 400c'. The inner shell 400b' is fitted inside the outer shell 400a', with its upper surface abutting against the lower surface of the mating surface carrier body 360'a, and its lower surface abutting against the waterproof and bend-resistant portion 430' described later. The inner shell 400b' is also a hollow cylindrical structure with insertion holes 410' and 412'. Corresponding to the cross-sectional profile of the integrated optical path body 450 or the optical fiber described later, the diameter of the lower insertion hole 410' of the inner shell 400b' is larger than that of the upper insertion hole 412'.

[0151] Furthermore, the axes of the insertion holes 380' on the optical system 310B side and the insertion holes 410' and 412' on the inner shell 400b' are aligned. The cross-sectional profile of the integrated optical path body 450 or the optical fiber, described later, is consistent with the cross-sectional profile formed by the insertion holes 380', 410', and 412'. Therefore, the integrated optical path body 450 or the optical fiber can be inserted into the insertion holes 380', 410', and 412' and fixed inside the shell 400', and aligned with the center point of the mating interface MJ of the optical system 310B. Although it is distinguished here as an outer shell 400a' and an inner shell 400b', in reality, the outer shell 400a' and the inner shell 400b' can be formed integrally. Furthermore, a chamfer 412'a can be further formed at the corner of insertion hole 412', and a chamfer 410'a can be further formed at the corner of insertion hole 410', so that the integrated optical path body 450 or optical fiber can be inserted into insertion holes 380', 410', and 412'.

[0152] In this embodiment, the cross-sectional profile of the integrated optical path body 450 or the optical fiber has a cladding 452 and a core 454 (this is only one construction example). Therefore, according to the embodiment of the present invention, the cross-sectional profiles of the insertion holes 380', 410', and 412' can be designed to match the cross-sectional profile of this integrated optical path body 450 or the optical fiber. Of course, in this embodiment, the shape, size, and dimensions of the cross-sectional profile of the integrated optical path body 450 or the optical fiber are not particularly limited. Therefore, the structural design of the housing 400' is not particularly limited, as long as the integrated optical path body 450 or the optical fiber can be inserted into the housing 400' and further into the optical system 310B.

[0153] Furthermore, the cover 400c' of the housing 400' has a hole into which the integrated optical path body 450 or the optical fiber can be inserted. Additionally, before inserting the integrated optical path body 450 or the optical fiber into the hole, a waterproof and bend-resistant part 430' can be inserted into the hole to prevent external moisture from entering the housing 400' or to prevent the optical fiber from bending or deforming. Then, the cover 400c', containing the integrated optical path body 450 or the optical fiber and the waterproof and bend-resistant part 430', is placed over the lower opening of the housing 400' to seal the housing 400'.

[0154] When the optical system 310B is tightly coupled to the housing 400' of the integrated optical path body 450 in the manner described above, the integrated optical path body 450 or the optical fiber can contact or approach the second window outward 319a, thereby further aligning with the center point of the mating interface MJ of the optical system 310B.

[0155] Furthermore, in this embodiment, since the integrated optical path 400C is inserted into the optical system 310B using a latch-like mechanism, it is not necessary to form a similar alignment bushing 330. Figure 5D The alignment bushing shows a chamfer of 330b. Of course, chamfers can also be formed under this structure to facilitate insertion; the invention is not particularly limited thereto.

[0156] Figure 6F This illustration depicts a public fiber optic connector 300D including an optical system 310B' and an integrated optical path 400D or fiber optic cable. Figure 6F and Figure 6D The structures of the two are basically similar, the only difference being that the male fiber optic connector 300D does not have the alignment bushing 330 of the female fiber optic connectors 300A, 300B, and 300C. Correspondingly, the outer shell 400a" of the housing 400" is also similar. Figure 6D The outer shell 400a' of the shown housing 400' also has a different design. However, the structure and function of other components such as the inner shell 400b", the cover 400c", the chamfer 410"a, the chamfer 412"a, and the waterproof and anti-bend part 430" are the same as those of the outer shell 400a'. Figure 6DThe inner shell 400b', cover 400c', chamfer 410'a, chamfer 412'a, waterproof and anti-bending part 430 shown have the same structure, so they will not be described in detail here.

[0157] In addition, such as Figure 6F As shown, Figure 6F The outer shell 400a" and Figure 6B 400a outer shell Figure 6C 400a casing and Figure 6D The outer shell 400a' has a similar structure. However, the outer shell 400a' has a protruding structure 401' that protrudes upward from the periphery of the upper surface of the outer shell 400a'. Because the optical system 310B of the male fiber optic connector 300D does not have an alignment bushing 330, a recess is formed on the lens barrel 316 at a position corresponding to the protruding structure 401', so that the protruding structure 401' of the outer shell 400a' can be engaged with the recess to secure it to the lens barrel 316. Furthermore, equivalent to... Figure 6E The diameter of the second opening 400f' is slightly larger than the outer diameter of the mating interface carrier 360'. In this way, the cover 400c" with the integrated optical path body 450 and the waterproof and anti-bend part 430" can be placed over the lower opening of the housing 400" to seal the housing 400".

[0158] also, Figure 6G It is a drawing Figure 6C The state of the optical integrated circuit 450 or the optical fiber after being inserted into the female optical fiber connector, and Figure 6H It is a drawing Figure 6F The state after the optical integrated circuit 450 or optical fiber is inserted into the female optical fiber connector. Figure 6I This diagram illustrates a physical contact connector. Because physical contact connectors are not suitable for dusty environments, they are best suited for environments such as inside a computer room. For general external connections, a connector with a physical contact connector on one side and an expanded beam fiber optic connector on the other, such as the various fiber optic connectors described above, is required. Figure 6G and Figure 6H (Including the embodiments described below) are examples of expanded beam fiber optic connectors. Figure 6G and Figure 6H The integrated optical path 450 or fiber of the expanded beam fiber optic connector shown can be further connected to... Figure 6I The physical contact connector 490 is shown. This physical contact connector 490 is suitable for use in environments where a bare optical fiber 491 is surrounded by a protective layer 492 and positioned by a positioning mechanism 493. This bare optical fiber 491 can be further connected to, for example... Figure 6G or Figure 6H The optical integrated circuit 450 or optical fiber in the fiber optic connector.

[0159] Third Embodiment In the second embodiment, a ring-shaped mating surface carrier disposed on the outer side of the second window of the optical system is used to adjust the center point of the mating surface. In this embodiment, a different mating surface carrier is used to adjust the center point of the mating surface.

[0160] Figure 7A This is a cross-sectional structural schematic diagram of an optical system according to a third embodiment of the present invention. In this conceptual diagram, the same reference numerals are used to denote... Figure 2B or Figure 4 Identical or similar components. These components serve essentially the same function, so their specific descriptions can be found in [reference needed]. Figure 2B and Figure 4 The differences will be explained here. For example... Figure 7A As shown, this embodiment uses a block-shaped mating interface carrier 170. This block-shaped mating interface carrier 170 is also suitable for optical signal input and output of integrated circuits and integrated optical circuits.

[0161] In the second embodiment, as Figure 4 The method of moving the center point C of the mating surface MJ is to move the collimating optical system 112A and / or the annular mating surface MJ in the moving direction A0, so that the parallel light beam entering the collimating optical system 112A can be focused on the center point C of the mating surface MJ. In this embodiment, a block-shaped mating surface carrier 170 and the collimating optical system 112A are used instead.

[0162] like Figure 7A As shown, the mating surface carrier 170 includes a conical portion 171 and a base portion 172. The base portion 172 can be a flattened cylinder with a certain height. The conical portion 171 and the base portion 172 can be glued together by adhesive or other similar means. Without affecting the function of the mating surface carrier 170, the conical portion 171 and the base portion 172 can also be integrally formed. Furthermore, Figure 7A As an example, the bottom surface of the base portion 172 is larger than the bottom surface of the cone portion 171, and the mating surface carrier 170 becomes a structure with a flange (see the example detailed later). However, the bottom surface area of ​​the base portion 172 may also be equal to the bottom surface area of ​​the cone portion 171.

[0163] Furthermore, looking at the outline of the mating surface carrier cut along the diameter direction, the conical portion 171 of the mating surface carrier 170 has two parallel first surfaces 171a (bottom surface of the conical portion) and second surfaces 171b (top surface of the conical portion). The first surfaces 171a and second surfaces 171b are approximately perpendicular to the optical axis AX of the collimating optical system 112A, and the second surface 171b serves as the mating surface MJ. Here, the area of ​​the second surface 171b is smaller than that of the first surface 171a. In addition, the first surface 171a can be connected to the second surface 171b through a third surface 171c (side surface of the conical portion), and the third surface 171c is an inclined surface. Furthermore, without affecting the function of the mating surface carrier 170, the mating surface carrier 170 may also be composed solely of the conical portion 171.

[0164] In this embodiment, as detailed in the embodiments below, the mating surface carrier 170 is not initially fixed directly to the lens barrel 150, but rather has some gaps (not shown), allowing the mating surface carrier 170 to move along the moving direction A1. This operation can be observed using a camera or the like, which serves as the monitoring device 140. Once the center point C of the mating surface MJ aligns with the focal point of the parallel beam 130, the mating surface carrier 170 is then fixed to the lens barrel 150 using, for example, glue. Afterwards, as... Figure 1 Generally speaking, by placing (coupling) the first optical integrated circuit 114, which includes a detector, an emitter, an optical fiber, and a waveguide, on the mating interface MJ, it can be coupled to the collimating optical system 112A in a manner that aligns with the center point C.

[0165] In this way, the focused beam can enter the detector, fiber optic cable, or waveguide that is subsequently installed. Conversely, because light is reversible, the light emitted from the transmitter, fiber optic cable, or waveguide at this point will also be collimated into a parallel beam 130 by this collimating optical system 112A and emitted.

[0166] Figure 7B This is a structural schematic diagram of the female optical fiber connector 300E according to an embodiment of the present invention. Figure 7B The structure of the optical system 310E shown is basically similar to Figure 6A The only difference is that the annular mating interface carriers 360, 360', etc., are replaced with block-shaped mating interface carriers 170. Furthermore, Figure 7B The components in the optical system 310E can be referenced. Figures 6A to 6F The corresponding explanations for etc. are omitted here. Furthermore, Figure 7B The structure shown is the result of Figure 7A The state after adjusting the method described.

[0167] Furthermore, in this embodiment, the block-shaped mating surface carrier 170 is positioned in contact with or near the second viewing window 319 (relative to the drawing). For example... Figure 7A and Figure 7B As shown, the mating surface carrier 170 has a conical portion 171 and a base portion 172. The diameter of the base portion 172 is greater than or equal to the diameter of the bottom surface of the conical portion 171. The specific structure of the mating surface carrier 170 will be referred to later. Figures 9E to 9G Further explanation.

[0168] Furthermore, a mating body 180, or dot package, is provided on the surface of the integrated optical path body 450 of the integrated optical path 400E. The mating body 180 is essentially a cylinder with a bottom and an opening on the top side (towards the optical system 310E). The mating body 180 has a first opening and a second opening. The first opening allows the conical portion 171 of the mating surface carrier 170 to be inserted. When the conical portion 171 of the mating surface carrier 170 reaches the second opening, it can contact or approach the waveguide 451, etc., disposed within the integrated optical path body 450. Figure 7B ).

[0169] Furthermore, the cross-section obtained by cutting the docking body 180 along the diameter direction can be trapezoidal or triangular, that is, the top surface 181 of the docking body 180 cross-section can be planar or point-like. When the top surface 181 is planar, it is equivalent to a ring-shaped structure with width when viewed from above. The specific structure and variations of the docking body 180 will be further explained later. In addition, when viewed from above, the docking body 180, as a point package, has a hole in the middle, that is, the aforementioned second opening corresponds to the location of the detector, transmitter, optical fiber, or waveguide of the integrated circuit or integrated optical path.

[0170] In addition, mechanical errors are inevitable during assembly, so it is preferable to set a small gap between the alignment bushing 330 and the package body 340, and between the mating body 180 and the alignment bushing 330. Finally, through Figure 7A The method is to calibrate the completed female fiber optic connector and insert it into the encapsulation hole (i.e., the second opening) of the docking body 180 on the integrated circuit or integrated optical path.

[0171] Figures 8A to 8D This is a schematic diagram illustrating several examples of block-shaped mating interface carriers according to embodiments of the present invention. Figure 8A and Figure 8B This illustrates a structure where the surface of the cone portion 171 of the mating interface carrier 170 in the height direction is an inclined surface. Figure 8A The top surface of the conical portion 171 has a recess, and the bottom surface of this recess serves as the mating contact surface MJ. Furthermore, Figure 8BThe top surface of the cone portion 171 has a protrusion, which is a cylindrical structure and its surface serves as a mating interface MJ. The detector or sensor that is coupled to the integrated circuit and coupled to the optical system is disposed on the surface of the integrated circuit body or embedded below the surface, and the top surface of the cone portion 171 can be made into a concave or convex part accordingly.

[0172] Figure 8C and Figure 8D The surface of the cone portion 171 of the mating interface carrier 170 in the height direction has a stepped structure. Figure 8C The top surface of the conical portion 171 (the uppermost layer of the stepped structure, i.e., the surface with the smallest area) has a recess, the surface of which serves as the mating contact surface MJ. Furthermore, Figure 8D The top surface of the cone portion 171 (the uppermost layer of the stepped structure, i.e. the surface with the smallest area) has a protrusion, which is a cylindrical structure and its surface serves as a mating interface MJ.

[0173] Therefore, the detector or sensor that is coupled to the integrated circuit of the optical system is either placed on the surface or embedded below the surface. Figures 8A to 8D The top surface of the cone portion 171 shown can be made into a concave or convex portion accordingly.

[0174] If high precision is not required, the various block-shaped mating interface carriers 170 described above can be molded using plastic, for example, by hot pressing, injection molding, or 3D printing. Conversely, if high precision is required, the portions of the various block-shaped mating interface carriers 170 near the mating interface MJ can be made of optical glass or ordinary glass, while the other portions of the mating interface carrier 170 farther from the mating interface MJ are formed using plastic. Then, adhesives are used to bond the plastic portions to the glass portions to complete the mating interface carrier 170. The glass portions can be fabricated using semiconductor processes, such as etching or coating, or by covering the entire glass with photoresist material and then exposing it to remove unwanted parts. As an example, the cone portion 171, being close to the mating interface MJ, is made of glass, while the base portion 172, being close to the optical system, is made of plastic.

[0175] Basically, in precision plastics manufacturing, the precision is around 10μm. In precision 3D printing, the precision is around 2μm. Furthermore, in glass, using etching, coating, or photoresist materials from semiconductor processes, the precision can be several μm or even less than 1μm.

[0176] Figures 9A to 9D This is a simplified architectural schematic diagram of an optical fiber connector according to an embodiment of the present invention. Figures 9E to 9G Draw Figures 9A to 9DThe diagram shows a perspective view and a cross-sectional view of the mating body of the mating surface carrier and the optical integrated circuit. Similarly, as in the above embodiments, the terms "bottom surface," "top surface," "upper," "lower," etc., are used for relative reference and are not intended to limit the embodiments of the present invention.

[0177] like Figure 9A As shown, the top surface 532A of the conical portion 530A of the block-shaped mating surface carrier 520A, facing the integrated circuit / integrated optical path side, serves as the mating surface MJ. After the parallel beam 550 is incident on the optical system 500A, it is focused onto the mating surface MJ (i.e., the top surface 532A of the conical portion 530A in the mating surface carrier 520A) by the collimating lens 510A in the lens system. The diameter of the top surface 532A of the conical portion in the mating surface carrier 520A is W1, and the diameter of the bottom surface 534A of the conical portion is W2, where W2 > W1. A detailed description of the construction of the mating surface carrier 520A will be provided later. Figure 9E and Figure 9G To illustrate.

[0178] also, Figure 9B and Figure 9C This is a simplified schematic diagram of an integrated circuit. Figure 9D A simplified structural diagram of an integrated optical path is shown. (Example:) Figure 9B As shown, the integrated circuit 600A1 has an integrated circuit body 610A1, and integrated circuit cells 620A1 are formed on the surface of the integrated circuit body 610A1 (the side facing the mating interface MJ). Furthermore, a mating body 630A1 is formed on the surface of the integrated circuit body 610A1 to mate with the mating interface carrier 520A on the optical system 500A side. The mating body 630A1 has an opening 636A1 with a diameter W2 equal to the diameter W2 of the bottom surface 534A of the conical portion in the mating interface carrier 520A.

[0179] Figure 9C The integrated circuit 600A2 also has an integrated circuit body 610A2, with integrated circuit cells 620A2 embedded beneath the surface of the integrated circuit body 610A2. Furthermore, the integrated circuit body 610A2 also has a mating body 630A1 for mating with the mating interface carrier 520A on the optical system 500A side. Additionally, the integrated circuit cells 620A1 and 620A2 can be detectors or transmitters. Figure 9DThe integrated optical path 600A3 also has an integrated optical path body 610A3, within which an integrated optical path unit 620A3 is formed. The integrated optical path unit 620A3 can be an optical fiber or a waveguide. Furthermore, a mating body 630A1 is also formed on the integrated optical path body 610A3 for mating with the mating interface carrier 520A on the optical system 500A side. The cross-section (diameter-direction cross-section) of the conical portion 530A of the mating interface carrier 520A has the same profile as the cross-section (diameter-direction cross-section) of the mating body 630A1, allowing the conical portion 530A to be inserted into the mating body 630A1. Detailed construction of the mating body 630A1 will be discussed later. Figure 9F and Figure 9G To illustrate.

[0180] Figure 9E and Figure 9G The diagram illustrates a perspective view and a cross-sectional view of a block-shaped mating interface carrier 520A according to this embodiment. The mating interface carrier 520A is composed of a conical portion 530A and a base portion 540A. The conical portion 530A and the base portion 540A can be integrally formed. Generally, due to the different precision requirements of optical systems and optical integrated circuits, the conical portion 530A and the base portion 540A can be manufactured separately and then joined together by adhesive or a similar method.

[0181] The cone portion 530A is essentially a cone, having a bottom surface 534A (i.e., the first surface 171a, facing the lens side), a top surface 532A (i.e., the second surface 171b, serving as a mating interface MJ and facing the integrated optical path or integrated circuit side), and a side surface 536A (i.e., the third surface 171c). Figure 9A , 9E As shown, the diameter W1 of the top surface 532A of the cone portion is smaller than the diameter W2 of the bottom surface 534A of the cone portion. Furthermore, the top surface 532A and the bottom surface 534A of the cone portion are substantially parallel. The side surface 536A of the cone portion connects the top surface 532A and the bottom surface 534A to form the cone portion 530A. The cone portion 530A has a height H1. Since the cone portion 530A is located near the integrated optical path / integrated circuit side and requires high precision, it can be fabricated using optical glass or general glass. The glass portion can be fabricated using semiconductor processes, such as etching or coating, or by covering the entire glass with photoresist material and then exposing it to remove unwanted portions.

[0182] Furthermore, the base portion 540A is essentially a cylinder, having two parallel top surfaces 542A and bottom surfaces 544A, and a side surface 546A connecting the top and bottom surfaces 542A to form the base portion 540A. The bottom and top surfaces 542A have the same diameter W3. Diameter W3 is larger than diameter W2, thus forming a structure with a flange on the bottom side by mating with the mating surface carrier 520A. Alternatively, the diameter W3 of the bottom and top surfaces 542A can also be equal to the diameter W2 of the bottom surface 534A of the conical portion. Furthermore, the mating... Figure 7A As shown, the diameter W2 of the bottom surface 534A of the cone portion is less than or equal to the inner diameter of the lens barrel portion 150 of the optical system 112A. The base portion 540A can be molded from plastic, for example, by hot pressing, injection molding, 3D printing, etc.

[0183] Finally, the conical portion 530A and the base portion 540A are bonded together, such as by using adhesive or a similar method, to complete the mating surface carrier 520A. At this time, the bottom surface 534A of the conical portion is bonded to the top surface 542A of the base portion.

[0184] also, Figure 9F and Figure 9G A schematic diagram illustrating the structure of the docking body 630A1 according to this embodiment is shown. The docking body 630A1 is essentially a cylinder with a bottom surface and an opening on the top side (facing the optical system 500A). The docking body 630A1 has a bottom surface 634A1 and a side surface 633A1, with the first opening 636A1 on the opposite side of the bottom surface 634A1. The docking body 630A1 has a first opening 636A1 and a second opening 635A1, with the diameter of the first opening 636A1 being larger than the diameter of the second opening 635A1. Thus, the docking body 630A1 forms an inclined surface 632A1 within the docking body 630A1 by gradually decreasing in diameter from the edge (first opening 636A1) down to the second opening 635A1. The slope of this inclined surface 632A1 is the same as the slope of the side surface 536A of the conical portion. Furthermore, within the mating body 630A1, a cylindrical hole is formed starting from the second opening 635A1, and this cylindrical hole has a height H2. Additionally, the inclined surface 632A1 within the mating body 630A1 has a height H1 on the side surface 633A1. Therefore, the total height of the mating body 630A1 is H1 + H2. Furthermore, in some examples, the height H2 of the cylindrical hole can be 0, such as... Figure 9C or Figure 9D The structure shown. Furthermore, the aforementioned cylindrical holes are suitable for accommodating spaces serving as integrated circuit cells, particularly... Figure 9BThe integrated circuit unit 620A1 shown is disposed on the surface of the integrated circuit body 610A1. In addition, the docking body 630A1 can be fabricated using semiconductor lithography and etching processes, and the etching can include isotropic etching, anisotropic etching, or a combination thereof.

[0185] Next, refer to Figures 9A to 9D and Figure 9G This section describes the connection method between the optical system 500A and integrated circuits 600A1 and 600A2, or with the integrated optical path 600A3. Only the main mating interface carrier 520A and the mating body 630A1 are shown here. When the conical portion 530A of the mating interface carrier 520A (part of the optical system 500A) is inserted into the mating body 630A1 (in the direction of the arrow)... Figure 9B When using integrated circuit 600A1 as an example, the side surface 536A of the cone portion will come into contact with the inclined surface 632A1 of the docking body 630A1, thereby fixing it.

[0186] Furthermore, the top surface 532A of the conical portion (mating surface MJ) of the mating surface carrier 520A reaches the second opening 635A1 of the mating body 630A1. Because the diameter of the top surface 532A of the conical portion is equal to the diameter of the second opening 635A1, the mating surface carrier 520A can only be inserted into the position of the second opening 635A1. At this time, the center point of the mating surface MJ will be aligned with the integrated circuit unit 620A1 of the integrated circuit 600A1 (the same applies to integrated circuit 600A2 and integrated optical path 600A3). At this time, the periphery of the first opening 636A1 of the mating body 630A1 will abut against the top surface 542A of the base portion. Thus, the mating of the optical system of the fiber optic connector with the integrated circuit is completed.

[0187] Figures 10A to 10D This is a simplified architectural schematic diagram of an optical fiber connector according to an embodiment of the present invention. Figures 10E to 10G Draw Figures 10A to 10D A schematic diagram of the three-dimensional and cross-sectional views of the mating body of the mating surface carrier and the optical integrated circuit. Figures 10A to 10G yes Figures 9A to 9G Examples of variations are given below, with only the differences explained.

[0188] like Figure 10AAs shown, the conical portion 530B of the block-shaped mating surface carrier 520B has a recess 537B on the side facing the integrated circuit / integrated optical path, and the bottom surface 533B of the recess serves as the mating surface MJ. After the parallel beam 550 is incident on the optical system 500B, it is focused onto the mating surface MJ (i.e., the bottom surface 533B of the recess in the conical portion 530B of the mating surface carrier 520B) by the collimating lens 510A. The diameter of the top surface 532B of the conical portion 530B in the mating surface carrier 520B is W1, the diameter of the bottom surface is W2, and the diameter of the bottom surface 533B is W4, where W2 > W1 > W4. A detailed description of the construction of the mating surface carrier 520B will be provided using... Figure 10E and Figure 10G To illustrate.

[0189] also, Figure 10B and Figure 10C This is a simplified schematic diagram of an integrated circuit. Figure 10D A simplified structural diagram of an integrated optical path is shown. (Example:) Figure 10B As shown, the integrated circuit 600B1 has an integrated circuit body 610B1, and integrated circuit cells 620B1 are formed on the surface of the integrated circuit body 610B1 (the side facing the mating interface MJ). Furthermore, mating bodies 630B1 are formed on the surfaces of the integrated circuit bodies 610B1, 610B2, and the integrated optical path body 610B3 to mate with the mating interface carrier 520B on the optical system 500B side. The mating body 630B1 has a first opening 636B1 with a diameter W2 equal to the diameter W2 of the bottom surface 534B of the conical portion. Additionally, the bottom surface inside the mating body 630B1 has a protrusion 631B1.

[0190] Figure 10C The integrated circuit unit 620B2 of the integrated circuit 600B2 is embedded below the surface of the integrated circuit body 610B2. In addition, the integrated circuit body 610B2 ​​also has a mating body 630B1 for mating with the mating surface carrier 520B on the optical system 500B side. Figure 10DThe integrated optical path 600B3 also has an integrated optical path body 610B3. When the integrated optical path unit 620B3 is a waveguide, it is formed within the integrated optical path body 610B3, and the front end of the waveguide can protrude from the surface of the integrated optical path body 610B3. This can be achieved by etching. Semiconductor processing methods can be controlled very precisely. Furthermore, a mating body 630B1 is also formed on the integrated optical path body 610B3 for mating with the mating interface carrier 520B on the optical system 500B side. The cross-section (diameter-wise cross-section) of the cone portion 530B in the mating interface carrier 520B has the same contour as the cross-section (diameter-wise cross-section) of the mating body 630B1, so that the cone portion 530B can be inserted into the mating body 630B1. Detailed construction of the mating body 630B1 will be discussed later. Figure 10F and Figure 10G To illustrate.

[0191] Figure 10E and Figure 10G The illustration shows a perspective view and a cross-sectional view of the block-shaped mating interface carrier 520B according to this embodiment. The mating interface carrier 520B is also composed of a conical portion 530B and a base portion 540B. The conical portion 530B and the base portion 540B can be integrally formed. Furthermore, generally, the required precision of the mating interface carrier 520B may differ between the side near the optical system and the side near the optical integrated circuit; therefore, the conical portion 530B and the base portion 540B can be manufactured separately and then bonded together using adhesive or a similar method. Moreover, the base portion 540B has essentially the same structure as the base portion 540A; the conical portion 530B differs from the conical portion 530A in that it has a recess 537B.

[0192] The top surface 532B, bottom surface 534B, and side surface 536B of the cone portion are basically the same as... Figure 9E and Figure 9G The top surface 532A, bottom surface 534A, and side surface 536A of the cone portion shown are the same; their specific structure can be found in [reference needed]. Figure 9E and Figure 9G The description continues. Here, the central portion of the top surface 532B of the cone portion has a recess 537B, which has a bottom surface 533B. The recess 537B extends from the top surface 532B of the cone portion into the interior of the cone portion 530B, reaching the bottom surface 533B. This recess 537B has a height H3 and a diameter W4. Furthermore, the base portion 540B is substantially the same as... Figure 9E and Figure 9GThe base portion 540A shown is the same, so its specific structural description can be found in the description for the base portion 540A. Finally, similarly, the cone portion 530B is attached to the base portion 540B, using adhesive or a similar method, to complete the mating surface carrier 520B. At this time, the bottom surface 534B of the cone portion is attached to the top surface 542B of the base portion.

[0193] also, Figure 10F and Figure 10G A schematic diagram illustrating the structure of the docking body 630B1 according to this embodiment is shown. The docking body 630B1 is essentially a structure with a bottom and an opening on the top side (towards the optical system 500B). The docking body 630B1 has a bottom surface 634B1 and a side surface 633B1, with the first opening 636B1 on the opposite side of the bottom surface 634B1. The docking body 630B1 has the first opening 636B1 and an inner bottom surface 638B1, the diameter W2 of the first opening 636B1 being larger than the diameter W1 of the inner bottom surface 638B1. Thus, the docking body 630B1 forms an inclined surface 632B1 within the docking body 630B1 by gradually decreasing in diameter from the edge side (first opening 636B1) down to the inner bottom surface 638B1. The slope of this inclined surface 632B1 is the same as the slope of the conical side surface 536B. Furthermore, within the mating body 630B1, a protrusion 631B1 is formed from the inner bottom surface 638B1, and this protrusion 631B1 has a height H3. Additionally, the inclined surface 632B1 within the mating body 630B1 has a height H1 at the side surface 633B1. Moreover, this depth H3 is equal to the height H3 of the recess 537B in the conical portion 530B of the mating surface carrier 520B, thus their outlines are consistent. In this way, the protrusion 631B1 of the mating body 630B1 can be recessed into the recess 537B. Furthermore, the aforementioned recess 537B is suitable for accommodating a space serving as an integrated circuit unit, particularly... Figure 10B The integrated circuit unit 620B1 shown is disposed on the surface of the integrated circuit body 610B1.

[0194] Next, refer to Figure 10G This section describes the connection method between the optical system 500B and integrated circuits 600B1 and 600B2, or with the integrated optical path 600B3. Only the main mating interface carrier 520B and the mating body 630B1 are shown here. When the conical portion 530B of the mating interface carrier 520B (part of the optical system 500B) is inserted into the mating body 630B1 in the direction of the arrow, the side surface 536B of the conical portion will come into contact with the inclined surface 632B1 of the mating body 630B1, thereby fixing it in place.

[0195] Furthermore, the recess 537B of the top surface 532B of the conical portion in the mating interface carrier 520B reaches the protrusion 631B1 inside the mating body 630B1. Thus, the protrusion 631B1 inside the mating interface carrier 520B is recessed into the recess 537B of the mating interface carrier 520B. At this time, the center point of the mating interface MJ is aligned with the integrated circuit unit 620B1 of the integrated circuit 600B1 (the same applies to the integrated circuit unit 620B2 of the integrated circuit 600B2 and the integrated optical path unit 620B3 of the integrated optical path 600B3). At this time, the periphery of the first opening 636B1 of the mating body 630B1 abuts against the top surface 542B of the base portion of the mating interface carrier 520B. Thus, the mating of the optical system of the fiber optic connector with the integrated circuit is completed. Furthermore, in another embodiment, the periphery of the first opening 636B1 of the mating body 630B1 does not need to abut against the top surface 542B of the base portion of the mating surface carrier 520B.

[0196] Furthermore, for detectors or transmitters of general precision integrated circuits, the mating interface carrier 520B can be fabricated using precision plastic molding methods, such as hot pressing, injection molding, or precision 3D printing. However, for precision integrated optical paths (fiber optics or waveguides), such as waveguides with a cross-section of approximately 0.4 μm x 0.2 μm, the mating interface carrier 520B is preferably made of glass or optical glass. The recess 537B can be etched using semiconductor etching processes. Alternatively, the recess 537B can be fabricated using photoresist and repeated exposure methods.

[0197] Furthermore, although the waveguide's cross-section is only about 0.4μm x 0.2μm, the diameter W4 of both the concave portion 537B on the top surface of the conical portion of the mating interface carrier 520B and the convex portion 631B1 of the mating body 630B1 can be slightly larger, such as by a few μm. This is because the key is finding the center point. As long as the concave portion 537B and the convex portion 631B1 are aligned accurately, the center point will be in the same location. Therefore, a slightly larger diameter W4 by a few μm makes manufacturing relatively easier and can slightly reduce costs.

[0198] also, Figure 11A and Figure 11B An enlarged view of the recessed portion of the mating interface carrier and the protruding portion of the mating body is shown. Regarding the recessed portion 537B on the top surface of the conical portion of the mating interface carrier 520B and the protruding portion 631B1 of the mating body 630B1, to facilitate the insertion of the mating interface carrier 520B into the mating body 630B1 of the optical integrated circuit in the optical system 500B, a feature such as... can be made at the corner of the recessed portion 537B on the top surface of the conical portion of the mating interface carrier 520B. Figure 11A The chamfer R1 shown, and / or the corner of the protrusion 631B1 of the mating body 630B1, is made as shown. Figure 11BThe chamfer R2 is shown. This allows the mating surface carrier 520B to be easily inserted into the mating body 630B1.

[0199] However, the dimensions of the chamfers R1 and R2 are very small, making them difficult to process using machining methods (such as chamfering cutters). Therefore, a more suitable method is to use strong or weak acids to etch the corners of the recess 537B and the protrusion 631B1. In this case, in addition to the corners of the recess 537B and the protrusion 631B1 being etched, other adjacent parts may also be etched. Therefore, the etch thickness (change in diameter) of the recess 537B and the protrusion 631B1 can be considered, and the thickness to be etched can be pre-filled when manufacturing the recess 537B and the protrusion 631B1.

[0200] Figures 12A to 12D This is a simplified architectural schematic diagram of an optical fiber connector according to an embodiment of the present invention. Figure 12E Draw a cross-sectional view of the mating interface carrier and the mating body. Figures 12A to 12E yes Figures 10A to 10G For example, in the following description, the same or similar components use the same reference numerals, so only the differences will be described.

[0201] like Figure 12A As shown, the conical portion 530C of the block-shaped mating interface carrier 520C has a protrusion 537C facing the integrated circuit / integrated optical path side, and its protruding surface 533C serves as the mating interface MJ. After the parallel beam 550 is incident on the optical system 500C, it is focused onto the mating interface MJ (i.e., the protruding surface 533C of the conical portion 530C of the mating interface carrier 520C) by the collimating lens 510A.

[0202] also, Figure 12B and Figure 12C Simplified schematic diagram of integrated circuit structure and Figure 12D The simplified structural diagram of the integrated optical path illustrated is basically the same as... Figure 10B and Figure 10C Simplified schematic diagram of integrated circuit structure and Figure 10D The simplified structural diagram of the integrated optical path shown is similar, the difference being the structure of the docking body 630C1.

[0203] exist Figures 12B to 12D Integrated circuits 600C1 and 600C2, and integrated optical circuit 600C3 are corresponding to Figures 10B to 10D The integrated circuits 600B1 and 600B2 and the integrated optical path 600B3, and the integrated circuit bodies 610C1 and 610C2 and the integrated optical path body 610C3 are corresponding to Figures 10B to 10DThe integrated circuit bodies 610B1, 610B2 ​​and the integrated optical path body 610B3, the integrated circuit units 620C1, 620C2 and the integrated optical path unit 620C3 are corresponding to Figures 10B to 10D The integrated circuit units 620B1, 620B2, and integrated optical path unit 620B3 are described herein, but their details are omitted. Furthermore, a mating body 630C1 is formed on the surface of the integrated circuit bodies 610C1, 610C2, and integrated optical path body 610C3 to mate with the mating interface carrier 520C on the optical system 500C side. Reference will be made below. Figure 12E To illustrate the structure of docking body 630C1.

[0204] like Figure 12E As shown, the conical portion 530C and its bottom surface 534C, top surface 532C, and side surface 536C of the mating interface carrier 520C have the same structure as the conical portion 530B and its bottom surface 534B, top surface 532B, and side surface 536B of the mating interface carrier 520B. The base portion 540C and its top surface 542C, bottom surface 544C, and side surface 546C have the same structure as the base portion 540B and its top surface 542B, bottom surface 544B, and side surface 546B of the mating interface carrier 520B. Their description is omitted here.

[0205] The difference between cone portion 530C and cone portion 530B is that the central portion of the top surface 532C of cone portion 530C has a protrusion 537C, and this protrusion 537C has a protruding surface 533C. This protrusion 537C has a height H3 and a diameter W4. Furthermore, the base portion 540C is essentially the same as... Figure 10E and Figure 10G The base portion 540B shown is the same, so its specific structural description can be found in the description for the base portion 540B. Finally, similarly, the cone portion 530C is attached to the base portion 540C, using adhesive or a similar method, to complete the mating surface carrier 520C. At this time, the bottom surface 534C of the cone portion is attached to the top surface 542C of the base portion.

[0206] also, Figure 12EA schematic diagram of the docking body 630C1 according to this embodiment is also shown. The docking body 630C1 is basically a cylinder with a bottom surface and an opening on the top side (towards the optical system 500C). The docking body 630C1 has a bottom surface 634C1, an inner bottom surface 638C1, and a side surface 633C1. The first opening 636C1 of the docking body 630C1 is located on the opposite side of the bottom surface 634C1. The diameter of the inner bottom surface 638C1 is W1, and a second opening 635C1 with a diameter of W4 is located in the center of the inner bottom surface 638C1. The inner bottom surface 638C1 is parallel to the bottom surface 634C1, and the distance between them is H3, which corresponds to the height H3 of the protrusion 537C of the mating surface carrier 520C. Furthermore, the diameter of the first opening 636C1 (equal to the diameter W2 of the bottom surface 534C of the conical portion) is larger than the diameter of the second opening 635C1 (equal to the diameter W4 of the protrusion 537C). Thus, the mating body 630C1 forms an inclined surface 632C1 within the mating body 630C1 by gradually decreasing in diameter from the edge side (first opening 636C1) down to the second opening 635C1. The slope of this inclined surface 632C1 is the same as the slope of the side surface 536C of the conical portion. The vertical distance H1 from the first opening 636C1 to the second opening 635C1 is equal to the height H1 of the conical portion. Furthermore, within the mating body 630C1, a cylindrical hole is formed extending from the second opening 635C1 on the inner bottom surface 638C1 towards the bottom surface 634C1 of the mating body 630C1. This cylindrical hole has a height H3, which corresponds to the height H3 of the protrusion 537C. Therefore, the height of the entire docking body 630C1 is the sum of H1 and H3. Furthermore, the aforementioned cylindrical hole is suitable for accommodating spaces serving as integrated circuit units, particularly... Figure 12B The integrated circuit unit 620C1 shown is disposed on the surface of the integrated circuit body 610C1.

[0207] Furthermore, when the docking body 630C1 does not have a structure corresponding to height H3, that is, when the docking body 630C1 is only manufactured as a structure containing the portion of height H1, it can be as follows: Figure 12D As shown, a recess 631C1 is formed on the surface of the integrated optical path body 610C3, so that the protrusion 537C can be placed into the recess 631C1.

[0208] Next, refer to Figure 12EWhen the conical portion 530C (part of the optical system 500C) of the mating interface carrier 520C is inserted into the mating body 630C1 in the direction of the arrow, the side surface 536C of the conical portion will come into contact with the inclined surface 632C1 of the mating body 630C1, thereby fixing it in place. Furthermore, the protrusion 537C of the top surface 532C of the conical portion in the mating interface carrier 520C will reach the recess 631C1 inside the mating body 630C1. Thus, the protrusion 537C of the mating interface carrier 520C will be recessed into the recess 631C1 inside the mating body 630C1. At this time, the center point of the mating interface MJ will be aligned with the integrated circuit unit 620C1 of the integrated circuit 600C1 (the same applies to integrated circuit 600C2 and integrated optical path 600C3). At this point, the periphery of the first opening 636C1 of the mating body 630C1 will abut against the top surface 542C of the base of the mating surface carrier 520C. This completes the mating of the optical system of the fiber optic connector with the integrated circuit.

[0209] In addition, the manufacturing method of mating interface carrier 520C can be found in the description of the manufacturing method of mating interface carrier 520B.

[0210] also, Figure 12E The corners of the convex portion 537C and / or concave portion 631C1 shown can also be referenced. Figure 11A and Figure 11B The chamfer shown is made in the same way. Therefore, you can refer to [reference needed] for information on the location and method of chamfering. Figure 11A and Figure 11B The description will be modified as appropriate, and its description is omitted here.

[0211] Figure 13A and Figure 13B This is a simplified architectural schematic diagram of an optical fiber connector according to an embodiment of the present invention. Figure 13A and Figure 13B yes Figures 10A to 10G Examples of changes, Figure 13A and Figure 13B The structure shown is basically the same as Figure 10G The conical portion 530B shown is similar to the docking portion; the differences will be explained here. Apart from the differences, Figure 13A and Figure 13B The structure and function of the cone portion 530D and other parts of the docking body 630D shown can be referred to Figures 10A to 10G Explanation.

[0212] like Figure 13A As shown, with Figure 10GSimilar to the conical portion 530B of the mating surface carrier 520B, the conical portion 530D of the mating surface carrier 520D installed in the optical system 500D has a top surface 532D, and a recess 537D is formed on the top surface 532D. The bottom surface 533D of the recess 537D serves as the mating surface MJ. Furthermore, on the side portion of the conical portion 530D, the original... Figure 10G The straight inclined surface of the cone-shaped side 536B is transformed into a stepped outer surface 536D.

[0213] In addition, such as Figure 13B As shown, a mating body 630D is formed on the surface of the integrated circuit body 610D, compared to Figure 10G The docking body 630B1 shown has an inner side 630D that is also stepped inner side 632D. It is important to note that the steps and cross-sectional profile of the stepped inner side 632D correspond to the stepped outer side 536D of the conical portion 530D, allowing the conical portion 530D to be embedded into the stepped inner side 632D. Furthermore, the bottom surface of the docking body 630D also has a protrusion 631D, which has the same structure as the protrusion 631B1. Here, except for the stepped inner side 632D, all other constituent elements of the docking body 630D are the same as those of the docking body 630B1, and can be referred to accordingly. Figures 10A to 10G Explanation.

[0214] Furthermore, although not explicitly drawn, it is similar. Figure 10B As shown, the integrated circuit cells of integrated circuit 600D are disposed on the surface of integrated circuit body 610D and are covered by the space within protrusion 631D. Furthermore, Figure 10D The integrated optical path 600B3 can also be used with this mating interface carrier 520D and mating body 630D.

[0215] Figures 14A to 14C This is a simplified architectural schematic diagram of an optical fiber connector according to an embodiment of the present invention. Figure 14A and Figure 14B yes Figures 12A to 12E Examples of changes, Figure 14A and Figure 14B The structure shown is basically the same as Figure 12E The conical portion 530C shown is similar to the docking body 630C1; the differences will be noted here. Apart from the differences, Figure 14A and Figure 14B The structure and function of the cone portion 530E and the other parts of the docking body 630E shown can be referred to Figure 12E Explanation.

[0216] like Figure 14A As shown, with Figure 12ESimilar to the conical portion 530C of the mating surface carrier 520C, the mating surface carrier 520E installed in the optical system 500E has a top surface 532E of the conical portion, and a protrusion 537E is formed on the top surface 532E of the conical portion. The surface 533E of the protrusion 537E serves as the mating surface MJ. Furthermore, relative to... Figure 12E The cross-sectional profile of the conical portion 530C of the mating interface carrier 520C is straight, and the side surface of the mating interface carrier 520E is changed to a stepped outer surface 536E.

[0217] In addition, such as Figure 14B As shown, the integrated circuit unit 620E of the integrated circuit body 610E is embedded below the surface of the integrated circuit body 610E. Furthermore, a mating body 630E is formed on the surface of the integrated circuit body 610E, compared to... Figure 12E The docking body 630C1 shown has an inner side 630E that is also stepped inner side 632E. It is important to note that the steps and cross-sectional profile of the stepped inner side 632E correspond to the stepped outer side 536E of the conical portion 530E, allowing the conical portion 530E to be inserted into the stepped inner side 632E. Furthermore, the bottom surface of the docking body 630E also has a recess 631E, which has the same structure as the recess 631C1. Here, except for the stepped inner side 632E, all other constituent elements of the docking body 630E are the same as those of the docking body 630C1, and can be referred to accordingly. Figure 12E Explanation.

[0218] Furthermore, although not explicitly drawn, it is similar. Figure 12C As shown, the integrated circuit cells of integrated circuit 600E are embedded below the surface of integrated circuit body 610E. Furthermore, Figure 12B and Figure 12D The integrated circuit 600C1 and integrated optical path 600C3 can also utilize this mating interface carrier 520E and mating body 630E. Furthermore, similar to... Figure 12D The structure shown, Figure 14C The structure shown also has a recess 631C1 formed on the surface of the integrated optical path body 610F, which is further connected to the integrated optical path unit 620F or an optical fiber.

[0219] As mentioned above, compared to Figure 10G and Figure 12E The mating interface carrier and mating body shown are in Figure 13A and Figure 13B and Figure 14A and Figure 14BThe mating interface carrier has a stepped outer surface, while the mating body has a stepped inner surface. The height of each step increases as it moves further away from the surface of the optical integrated circuit. Thus, when the mating body is inserted into the mating interface carrier, the top of the mating body first contacts the positioning aids of the steps behind the mating interface carrier. Therefore, when the mating body is inserted, it is inserted step by step from top to bottom to ensure precise engagement of the final protrusions and recesses. Furthermore, in... Figure 13A and Figure 13B and Figure 14A and Figure 14B The recesses (537D, 631E) and / or protrusions (631D, 537E) shown can also be based on Figure 11A and Figure 11B As shown, chamfers are generally formed at each corner to facilitate the insertion of both the mating surface carrier and the mating body.

[0220] In summary, the mating carriers shown in the examples above require highly precise dimensions at and around the mating surfaces, which can be fabricated using semiconductor processes. For instance, multiple exposures using photoresist can achieve the desired precise shape. Furthermore, when using photoresist, precision in the xy-plane (the plane perpendicular to the optical axis) is very high, reaching nanometer-level accuracy, but there may be slight inaccuracies in the z-direction (optical axis direction). However, optical lenses have a depth of field when focusing, so even with slight inaccuracies in the z-direction, they are still within the depth of field, and the overall precision remains acceptable.

[0221] Furthermore, for the mating surface carrier, the inclined surface far from the mating surface serves only as a guide and can be chamfered, thus allowing for a larger tolerance in error. Therefore, the portion of the inclined surface far from the mating surface can be formed using general precision plastic molding methods, such as hot pressing or injection molding.

[0222] In summary, as can be seen from the three embodiments described above, as long as the lens closest to the focal point in the lens system of the optical system is a flat surface facing outwards, and the focal point is located on this flat surface, then this flat surface (as in the first and second embodiments) can function as a second window. This second window can be used as a mating surface. Furthermore, as mentioned above, because light is focused only after passing through this lens (second window), this lens needs to be taken into account when designing optical lenses; therefore, the second window is part of the optical system.

[0223] Furthermore, a block-shaped mating surface carrier, for example, is also a double-flat lens and part of an optical system. Additionally, if the lens closest to the focal point is a plano-convex lens, and the outward-facing surface is flat, and the focal point is also near this flat surface, then this flat surface can be used as a mating surface. Therefore, this flat surface is collectively referred to as the focal surface. This focal surface itself, or with the addition of some suitable components, can become a mating surface. For example, in the first and third embodiments, this flat surface is the mating surface. In the second embodiment, this flat surface is further enhanced with an annular mating surface carrier; in this case, the central portion of this flat surface is the mating surface.

[0224] The optical system according to embodiments of the present invention has been described in detail above, particularly how to use lenses, mating surface carriers, etc., to ensure that the focal point of the optical system coincides with the center point of the mating surface. When adjusting the focal point of the optical system and the center point of the mating surface, an adjustment device needs to be designed. One key aspect of this adjustment device is how to generate a parallel beam of light for adjustment to illuminate the optical system; another key aspect is how to find the focal point and ensure that the focal point coincides with the center point of the mating surface using lenses and mating surface carriers. These will be described in detail below.

[0225] Parallel light in optical systems is typically generated using collimators or lasers. However, the setup of collimators also suffers from mechanical errors. Setting up a precise collimator with very small mechanical errors is usually difficult. This invention proposes a simple and inexpensive method for generating parallel light.

[0226] Figures 15A to 15F This is a schematic diagram illustrating the long straight tube structure for adjusting an optical system and its method of generating a parallel beam according to the present invention. As described in the preceding embodiments, the directions such as up / down and left / right described below are relative directions based on the drawings and are for convenience only, not absolute directions.

[0227] Figure 15A This is a schematic diagram illustrating the long straight tube structure for adjusting an optical system and its method of generating a parallel beam, as well as a schematic diagram of the optical path of the parallel beam parallel to the optical axis, according to the present invention. Figure 15A As shown, in fabricating the optical system 1200, this embodiment first provides a long straight tube 1000, which is essentially a hollow cylindrical structure, allowing the optical system 1200 to be inserted into the long straight tube 1000, thereby adjusting the lateral position of the collimating lens 1202 (perpendicular to the optical axis of the collimating lens 1202). To facilitate the explanation of the parallel light used during adjustment, only the collimating lens 1202, the second window 1206, and the outward 1206a of the second window are illustrated in this optical system 1200.

[0228] Furthermore, the long straight tube 1000 has a first opening 1010 and a second opening 1020 at both ends. A light source (first light source) 1100, such as a uniform light source, is disposed above the first opening 1010; the following description will use the uniform light source 1100 as an example. The uniform light source 1100 is placed on the upper edge surface 1001 of the long straight tube. The optical system 1200 of the fiber optic connector is also placed inside the long straight tube 1000, near the second opening 1020. The parallel beam 1300 generated by the uniform light source 1100 is incident on the collimating lens 1202 in the lens system of the optical system 1200, and the parallel beam 1300 is focused onto the focal point F of the collimating lens 1202.

[0229] Generally, a standard uniform light source 1100 is an integrating sphere light source. However, according to an embodiment of the present invention, the inner diameter of the long straight tube 1000 is only a few millimeters. Therefore, the uniform light source 1100 may include at least one light source or a ring-shaped arrangement of light sources. Furthermore, this uniform light source 1100 may be monochromatic light or white light, depending on the requirements.

[0230] Regarding the characteristics of a uniform light source, each point of the uniform light source 1100 emits light rays of approximately the same intensity in all directions (if the difference between the emission angle and the optical axis is not significant). Therefore, for each point of the uniform light source 1100, there is a set of light rays parallel to the optical axis in any direction, among which a set of parallel beams 1300 will be parallel to the optical axis of the optical system, such as... Figure 15A As shown, this parallel beam 1300 is focused on the focal point F1 on the optical axis.

[0231] Figure 15B This is a schematic diagram illustrating the optical path and imaging of an edge beam and a parallel beam parallel to the edge beam in a long straight tube, according to the present invention. Figure 15B As shown, all parallel beams are focused onto the focusing surface (i.e., the second window outwards 1206a) of the collimating lens 1202 of the lens system of this optical system 1200, and then reach the imaging surface 1050; light passing through the center of the lens is also focused onto the focusing surface (i.e., the second window outwards 1206a), and then reaches the imaging surface 1050. Therefore, compared to the mechanical errors during the setup of a typical collimator, the uniform light source 1100 will have a set of parallel beams 1300 parallel to the optical axis of the collimating lens 1202. Moreover, compared to parallel beams at other angles (angles with the optical axis), the light intensity distribution at the focal point of the parallel beams 1300 parallel to the optical axis of the collimating lens 1202 can be adjusted to suit operation by adjusting the position and size of the uniform light source 1100.

[0232] Next, refer to Figure 15A , Figure 15B and Figure 15CThe discussion and analysis of the optical path of light emitted from a uniform light source 1100, after being focused by the collimating lens 1202 of the lens system of the optical system 1200, and then reaching the focal plane (i.e., the second viewing window outward 1206a). Several key points of the optical path will be explained next.

[0233] First, a uniform light source 1100 emits multiple parallel beams 1300. These parallel beams 1300, after passing through the optical system 1200, are focused onto a focal plane, which is the second viewing window 1206a. Furthermore, the beams emitted from each point of the uniform light source 1100, after passing through the optical system 1200 and then the second viewing window 1206a (the focal plane), are finally focused onto the imaging plane 1050. Figure 15B and Figure 15C As shown.

[0234] In this architecture, the parallel beam group emitted by the uniform light source 1100, parallel to the optical axis of the collimating lens 1202, is finally focused at the focal point F1 of the parallel beam. However, due to unavoidable mechanical errors in the optical system 1200, this focal point F1 is usually not exactly at the center point of the second viewing window outward 1206a (i.e., the focusing plane). How to make this focal point F1 as consistent as possible with the center point of the second viewing window outward 1206a is what the embodiments of the present invention need to determine.

[0235] In addition, such as Figure 15C The diagram illustrates the search for the maximum diameter of the light intensity distribution of the uniform light source 1100 on the focal plane, i.e., the second viewport 1206a outwards. As shown in the figure, the peripheral ray 1302 originates from the outermost point of the uniform light source 1100 and reaches the other side of the optical system 1200 (near the wall of the long straight tube 1000). After passing through the focal plane (i.e., the second viewport 1206a outwards), its intersection point is the focal point F2 of the peripheral ray 1302. The peripheral ray 1302 then reaches the imaging plane 1050.

[0236] like Figure 15C As shown, all parallel beams parallel to the edge ray 1302, except for the edge ray 1302, hit the wall of the long straight tube 1000. Therefore, parallel beams with angles larger than the edge ray 1302 hit the wall of the long straight tube 1000 without passing through the optical system 1200, while beams with smaller angles partially hit the long straight tube and partially hit the optical system 1200, such as... Figure 15B .

[0237] For example Figure 15AIn the lens system of optical system 1200, only the parallel beam 1300 parallel to the optical axis of collimating lens 1202 will not hit the wall of the long straight tube 1000, but will all pass through optical system 1200 and be focused at the focal point F1 of the parallel beam 1300 parallel to the optical axis. Therefore, the light intensity of these parallel beams 1300 parallel to the optical axis is the strongest; conversely, the light intensity decreases as you move outwards, and outside the focal point F2 of the marginal ray 1302, the light intensity is 0.

[0238] Figure 15D This describes the scenario where light emitted from a point light source at different positions P1 and P2 (foci F1 and F2) on the focal plane (i.e., the second viewing window facing outward 1206a) passes through the optical system 1200, then through the interior of the long straight tube 1000, and finally reaches the sensor 1150. Here, because the path of the light beam is reversible, the light emitted from the focal plane (second viewing window 1206) will also become parallel rays 1300 and 1302 in the opposite direction after passing through the optical system 1200.

[0239] like Figure 15D and Figure 15E As shown, the light emitted by the point light source located at the focal point F2 (position P2) of the peripheral ray 1302 will have its outermost beam (i.e., peripheral beam 1302) strike the other side of the sensor 1150, while the other beams parallel to the peripheral ray 1302 will strike the wall of the long straight tube 1000. Furthermore, the light emitted by the point light source located at the focal point F1 (position P1) of the parallel beam parallel to the optical axis of the collimating lens 1202 will, as shown... Figure 15D As shown, the light does not hit the wall of the long straight tube 1000, but directly enters the sensor 1150, so its light intensity is the strongest. Conversely, the further outward (away from the center point of the second viewing window 1206), the weaker its light intensity becomes, until it reaches 0 when it is outside the focal point F2 of the edge ray 1302.

[0240] Next, refer to Figure 15E This section explains the calculation of the diameter of the light spot formed by the focal point F2 of the aforementioned marginal beam 1302, where each parameter represents the following: A: Object length B: Image length D: Diameter of the light spot at the focal point a: Object distance; b: Image distance; c: Collimating lens diameter f: Lens focal length.

[0241] First, based on the lens imaging formula, we can obtain the following equation: (1) Therefore, we can conclude that: (2) again, (3) From the above equations (2) and (3), we can obtain: (4) also, (5) Therefore, we can conclude that: (6) The diameter D of the light spot at the focal point is y+B, from which we can calculate: (7) Where y is the increase in length due to the shift from image distance to focal length.

[0242] Based on the above formula for calculating the diameter of the light spot (7), two examples are given below to further illustrate this.

[0243] Example 1 In this example, assuming the length of the long straight tube 1000 is 10cm and the focal length f is 4mm, the object length A of the uniform light source 1100 is 4mm and the object distance a is 10cm-4mm=96mm, based on the above formula (2), the image distance b is 4.1739mm and based on the above formula (4), the image length B is 0.1739mm.

[0244] Therefore, based on the above formula (6), the increase in length y due to the shift from image distance to focal length can be calculated to be 0.1511 mm. Finally, the diameter D of the light spot is obtained from formula (7) as 0.1511 mm + 0.1739 mm = 0.325 mm.

[0245] Example 2 In this example, assume that the length of the long straight tube 1000 is 100cm, the focal length f is 4mm, the object length A of the uniform light source 1100 is 4mm, and the object distance a is 100cm-4mm=996mm. Based on the above formula (2), the image distance b is 4.0161mm, and based on the above formula (4), the image length B is 0.0161mm.

[0246] Therefore, based on the above formula (6), the increase in length y due to the shift from image distance to focal length can be calculated to be 0.0152 mm. Finally, the diameter D of the light spot is obtained from formula (7) as 0.0152 mm + 0.0161 mm = 0.0313 mm = 31.3 μm.

[0247] Based on the two calculation examples above, it can be seen that when the length of the 1000 straight tube is 10cm, the diameter D of the light spot on the focusing surface (i.e., the second viewing window facing outwards 1206a) is 0.325mm = 325μm. Furthermore, when the length of the 1000 straight tube is 100cm, the diameter D of the light spot on the focusing surface (i.e., the second viewing window facing outwards 1206a) is 0.0313mm = 31.3μm. Also, the diameter of a typical optical fiber is approximately 0.125mm = 125μm, while the central opening of the second viewing window facing outwards 1206a (i.e., the mating interface MJ) is approximately 126μm or 127μm. Therefore, if the diameter D of the light spot is 325μm, there will definitely be light at the central opening of the second viewing window facing outwards 1206a (i.e., the mating interface MJ), thus the center point can be found. However, the change in light intensity is relatively slow, and the change in light intensity at the center point is small. Conversely, if the diameter D of the light spot is 31.3 μm, the light intensity varies considerably, making it much easier to accurately locate the center point. However, initially, this light spot diameter cannot be guaranteed to be exactly at the center opening of the positioning plate. Here, the center opening of the second window 1206a (i.e., the mating interface MJ) can be used to position the detector, transmitter, optical fiber, or waveguide of the optical integrated circuit; therefore, this mating interface MJ can also be called the positioning plate.

[0248] Therefore, the method for quickly and accurately focusing is as follows: Figure 15F At least one diffuser 1502 is further provided within the long straight tube 1000. Because this diffuser 1502 is relatively close to the optical system 1200, the light spot is relatively large and can be observed at the beginning of operation. Then, the light spot is moved closer to the target position and then removed from the diffuser 1502. At this point, the focused light spot of the usually more distant light source 1100 is within the observation range. The light emanating from the diffuser 1502 includes all directions. For each beam emitted by the uniform light source 1100, there is a set of beams emitted from each point on the diffuser 1502 and parallel beams parallel to this beam line. As an example, the diffuser 1502 can be made of frosted glass, for example.

[0249] Compared to Figure 15A The long straight pipe shown is 1000. Figure 15FThe elongated straight tube 1000 shown may further include a diffuser module 1500 disposed within the elongated straight tube 1000. For example, the tube wall of the elongated straight tube 1000 has a diffuser mounting hole 1400 for receiving the diffuser module 1500. The diffuser mounting hole 1400 is perpendicular to the axis of the elongated straight tube 1000. The diffuser module 1500 is disposed between the uniform light source 1100 and the optical system 1200. Furthermore, this diffuser module 1500 may include a diffuser 1502 for diffusing parallel light beams incident on the diffuser 1502. Additionally, if necessary, a uniform light source (second light source) 1504 may be further disposed on the diffuser 1502. The diffuser module 1500 may be inserted into or removed from the diffuser mounting hole 1400 as needed.

[0250] Furthermore, corresponding to the long straight tube 1000, the diffuser 1502 is, for example, a disc with a certain thickness, whose surface is parallel to the radial direction of the long straight tube 1000 and perpendicular to the axial direction of the long straight tube 1000, or it can be said to be perpendicular to the optical axis direction of the collimating lens 1202.

[0251] Furthermore, in this example, the optical system 1200 is similar to Figure 3A The optical system 1200 may include a lens barrel 1210, a collimating lens 1202', positioning rings 1208a and 1208b, a first viewing window 1204, a second viewing window 1206, etc. For a detailed description of their functions and structures, please refer to [reference needed]. Figure 3A The descriptions of various embodiments are omitted here. However, the collimating lens 1202' here is a triple lens composed of a pair of biconvex lenses 1202'a and 1202'b and a biconcave lens 1202'c; of course, this is only one example, and the collimating lens 1202' can be constructed with various different structures.

[0252] In addition, through Figure 15F The optical system 1200 is adjusted by using the parallel light from the long straight tube 1000. After adjusting the movable collimating lens 1202' and / or the mating contact carrier (not shown) as described in the above embodiments so that the focal point of the optical system 1200 is aligned with the center point of the second viewing window outwards 1206a, the collimating lens 1202' and / or the mating contact carrier are fixed. Then, the optical system 1200 is removed from the direction indicated by the arrow.

[0253] In addition, from Figure 15F It can be seen that the illustrated optical system 1200 is suitable for manufacturing male fiber optic connectors. If a female fiber optic connector is to be manufactured, the optical system 1200 can be further provided with alignment bushings, as detailed in the descriptions of the embodiments above.

[0254] The focal point of the optical system 1200 can be aligned with the center point of the second window 1206a, which points outwards. This will be explained in detail later.

[0255] also, Figure 16A and Figure 16B This is a variation of the long straight tube structure illustrated according to the present invention. In order to achieve rapid and accurate focus determination, the embodiment of the present invention further provides a long straight tube inner tube in the long straight tube 1000.

[0256] like Figure 16A As shown, a long straight tube inner tube 1070 is provided inside the long straight tube 1000. The long straight tube inner tube 1070 is the same as the long straight tube 1000, and is a hollow cylinder. The long straight tube inner tube 1070 has a straight central hole 1072, through which light emitted by the uniform light source 1100 can enter the collimating lens 1202 of the lens system of the optical system 1200.

[0257] As an example, the outer diameter of the inner tube 1070 is approximately equal to the inner diameter of the long straight tube, allowing the inner tube 1070 to fit inside the long straight tube 1000. The height of the inner tube 1070 is less than the height of the long straight tube 1000, and it is positioned between the uniform light source 1100 and the optical system 1200. Therefore, the spot diameter of the focal plane can be changed during operations that align the focal point with the outward-facing second window 1206a (mating interface MJ). This also allows for quick and precise focal point finding. Figure 16B for Figure 16A Examples of changes, and Figure 16A The difference lies in Figure 16B It uses a 1100A light source, which is a general light source. With a long, straight inner tube of 1070, Figure 16B The architecture still allows for quick and accurate focus finding.

[0258] Also, such as Figure 16A As shown, taking Example 2 above as an example, if a long straight tube inner tube 1070 is inserted inside the long straight tube 1000, and the diameter of its adjustment hole 1072 is, for example, about 1 mm, then the diameter of the light spot on the focusing surface (i.e., the second viewing window facing outward 1206a) will be about 1 / 4 of the original, that is, 31.3 μm / 4 = 8 μm. Under this condition, the geometric center point of the light can be easily found.

[0259] Also, such as Figure 16BIf a standard light source 1100A is used, the spot diameter on the focusing plane (i.e., outward from the second window 1206a) is still approximately 8μm. In this case, the geometric center of the entire pattern is the focal point. This architecture may be somewhat imprecise, but the error is estimated to be no more than 1μm. Therefore, for the single-mode fiber to be coupled to the integrated optical path side of the optical system 1200, its core diameter is approximately 9μm, hence the use of… Figure 16B The architecture is also sufficient. Furthermore, the detector or transmitter coupled to the integrated circuit side of the optical system 1200 is still large in size, so a general light source is not suitable. Figure 16B The architecture shown is sufficient. However, for the waveguide coupled to the integrated optical path side of the optical system 1200, the waveguide size is less than 0.5 μm, so it is more appropriate to use the architecture of the uniform light source 1100.

[0260] also, Figure 17A and Figure 17B This is a variation of the longer straight tube structure illustrated according to the present invention. For example... Figure 17A As shown, if the length of the 1000A straight tube is still long and its inner diameter is still small, then the 1000A straight tube may not be straight and will be inconvenient to insert. Figure 16A or Figure 16B The long straight inner tube 1070 is shown. In this case, a long straight inner tube 1080 with a central hole 1082 can be inserted on the side of the uniform light source 1100. Furthermore, another long straight inner tube 1090 with a central hole 1092 can be fitted on the side of the optical system 1200. The diameter of the central hole 1092 is approximately equal to the outer diameter of the optical system 1200. Furthermore, as... Figure 17B As shown, it is Figure 17A For example, in this case, the uniform light source 1100 is replaced with a general light source 1100A.

[0261] At this point, if the diameter (inner diameter) of the central apertures 1082 and 1092 is 1 mm, and the length of the long straight tube 1000A is 400 cm, then the diameter of the light spot on the focusing surface is approximately 2 μm. This is sufficient for the center point or the point of strongest light intensity for single-mode fibers or those with small core diameters, and also for waveguides.

[0262] The above description explains how to generate ideal parallel light. Next, the fine-tuning method for the collimating lens, fine-tuning positioning lens, and mating contact carrier in the lens system of the above optical system will be explained. As described above, with... Figure 15AFor example, due to unavoidable mechanical errors during the assembly of the optical system, the focal point of the optical system described above will not fall exactly at the center point of the second viewing window 1206a. Therefore, it is necessary to move the collimating lens 1202, the undrawn fine-tuning positioning lens (located between the collimating lens 1202 and the second viewing window 1206a (i.e., the mating surface MJ)), and the undrawn mating surface carrier of the lens system 1200 so that the focal point of the optical system 1200 falls at the center point of the mating surface. This movement is in a direction perpendicular to the optical axis (e.g., the z-direction) of the optical system 1200 (e.g., the xy-direction).

[0263] The following is for reference only. Figure 15A To explain, an optical system (such as...) is required to perform the above operations. Figure 15A Optical system 1200) and monitoring device (such as Figure 2A , Figure 4 The monitoring device 140 can be a camera or a detector array, etc. During operation, this optical system is placed inside the long straight tube 1000 of each of the above embodiments, and a parallel beam 1300 is generated by a uniform light source 1100, illuminating the collimating lens 1202 inside the long straight tube 1000. After finding the focal point, the focal point is aligned with the center point of the second viewing window outwards 1206a (i.e., the mating surface MJ). Then, the collimating lens 1202, the fine-tuning positioning lens (not shown), and the mating surface carrier (not shown) are fixed.

[0264] Before we begin, let's define what is called the center of light intensity. At this center of light intensity It is similar to the concept of the center of mass in mechanics. (X, Y) This refers to a two-dimensional coordinate system on the screen. Furthermore, here "screen" refers to the camera (see reference). Figure 2A The screen of the monitoring device (etc.). Also, assuming the screen shows the... i The light intensity at each point is , For the first on the screen i The position vector of a point (i.e., its two-dimensional planar coordinate position), and M, representing the total light intensity, can then define the center of light intensity. as follows: (8) in , , .

[0265] Once it is determined that all the light spots on the focal plane are on the screen, the center of light intensity can be calculated. This is the center point. At this point, even if the focus is not very good and there are aberrations, a suitable center point can still be found. In addition, there are multiple methods to locate the center point of the central circular hole of the mating surface MJ, so it can also be calculated using a similar definition of the center of light intensity, as shown in the following formula (9): , (9) Here, the light intensity of each point on the screen formed by the central aperture is set to 1, and M represents the total number of points of this aperture on the camera screen. This is the center point of the screen. If the center of light intensity is not at the center point, it is moved to the center point and the center of light intensity is recalculated until the center point and the center of light intensity are at the same point or very close to each other. This is the actual center point.

[0266] Figures 18A to 18C This is an explanatory diagram illustrating the movement of the focal point when a fine-tuning positioning lens is displaced according to an embodiment of the present invention. Next, an example will be given illustrating the structure of an optical system with a collimating lens and a fine-tuning positioning lens. Hereinafter, reference will be made to... Figures 18A to 18C This illustrates the change in the light spot when the fine-tuning positioning mirror is moved (moved laterally). Furthermore, optical lens design is a mature technology. The required lens combination for each specification is almost universally agreed upon. For example, focusing multiple wavelengths of parallel light along the optical axis generally only requires a double lens plus an aspherical design to meet the specifications. If, in addition to these necessary lenses, the lens group contains lenses with longer focal lengths (lower magnification / refractive power), these lenses can be called fine-tuning positioning lenses.

[0267] Generally speaking, when a lens moves, the focused spot of light also moves. Therefore, assuming the lens movement ratio of the spot is S, it can be defined by the following equation (10): S = (distance moved by the corresponding focused light point) / (distance moved by a certain lens) (10).

[0268] As an example, the lens system of the optical system has a first lens L1, a second lens L2, and a third lens L3. The first lens L1 and the second lens L2 form a double lens and serve as a collimating lens. The third lens L3 serves as a fine-tuning lens, and its focal length is f. This fine-tuning positioning lens can also be a double lens, depending on the requirements. Figure 18A As shown, the following equation (11) can be obtained.

[0269] (11) Here, D1 is known, while D2 is the quantity to be found. D2 represents the focal point of the double lenses L1 and L2 when there is no third lens L3.

[0270] like Figure 18B As shown, assuming the movement distance of the third lens is b2 (i.e., object length), and b1 is the image length, the displacement Δ of the first focal point caused by the displacement of the third lens L3 is calculated as follows.

[0271] Δ = b2 - b1 (12) (13) (14) (15) (16) (17).

[0272] Based on this result, if you choose focal length f =10D1, then when the moving distance b2 of the third lens L3 is 2μm, the moving distance of the light spot is 0.2μm. At this time, according to equation (10), the lens movement ratio S of the light spot is equal to 0.2μm / 2μm =0.1. In addition, if the focal length is chosen... f =100D1, then when the moving distance of the third lens L3 is 2μm, the moving distance of the light spot is 0.02μm. At this time, according to equation (10), the moving ratio S of the light spot lens is equal to 0.02μm / 2μm =0.01. That is, the moving ratio S of the light spot lens is relatively small.

[0273] In the realm of geometrical optics, light is reversible. For example... Figure 18C As shown, if the movement distance of the third lens L3 is b2, the double lens (first lens L1 and second lens L2) will consider the light spot SP1 to have shifted to the light spot SP2, and the displacement distance Δ is given by the above formula (17). Furthermore, if this optical system is reduced by a factor of G, then as shown... Figure 18C As shown, the moving distance K of light spot SP3 is given by the following formula (18): (18) Assuming G=10 and focal length f=100D1, the movement distance K is equal to 0.002μm, or 2nm. In this case, if the movement distance b2 of the third lens is 2μm, the lens movement ratio S is equal to 0.001.

[0274] Based on the above description, in this embodiment of the invention, the fine-tuning positioning lens (such as...) Figures 18A to 18CThe illustrated third lens (L3) employs a lens with a small spot lens movement ratio S. This type of fine-tuning positioning lens achieves the following effects in various embodiments of the invention. First, the fine-tuning positioning lens allows for relatively easy fine-tuning of the spot position. Generally, it is relatively easy to move the spot from 100 μm to 10 μm using an XY stage (horizontal platform). However, under high-precision requirements, moving the spot from 1 μm to 0.001 μm using an XY stage is quite difficult. Moving the spot from 1 μm to 0.001 μm typically requires very precise instruments. However, according to the method described above according to the invention, this can be easily achieved simply by using a fine-tuning positioning lens with a small spot lens movement ratio S.

[0275] Based on the above description, according to an embodiment of the present invention, at least one fine-tuning positioning lens (such as...) can be disposed at an appropriate position within the lens barrel of the optical system. Figures 18A to 18C The third lens L3 is illustrated. In the case of multiple lenses, these fine-tuning positioning lenses may have the same or different focal lengths and may each have a separately set movable range.

[0276] Furthermore, once the light spot is aligned with the center point of the focusing surface (or mating surface, the second viewing window mentioned above, etc.), the focusing lens is fixed using adhesive or similar materials. At this time, the adhesive application introduces a certain degree of stress. This stress can cause the aligned light spot to shift over time. Different adhesives have different stress levels, so the shift distance of the light spot varies. Generally, the shift distance is approximately 1 μm to several μm. This is unacceptable for precision expansion fiber optic connectors. Therefore, after positioning, the stress issue must be addressed.

[0277] First, the optical system is placed inside the long straight tube. At this point, the collimating lens and fine-tuning lens of the lens system within the optical system are not fully fixed. Next, the collimating lens is moved laterally (perpendicular to the optical axis) until the focused light spot reaches a specific position, that is, until the focused light spot coincides with or is as close as possible to the center point of the mating surfaces. Then, the collimating lens is positioned and fixed using adhesive or similar materials. Next, if necessary, the fine-tuning lens can be further moved to reach the same focused light spot, again aligning with or being as close as possible to the center point of the mating surfaces. Finally, the fine-tuning lens is positioned and fixed using adhesive or similar materials.

[0278] After the adhesive dries, heat treatment such as annealing is performed to relieve stress. At this point, the focused spot may have slightly shifted. If a second fine-tuning lens is used, it can be moved to bring the focused spot to a specific position. Then, the second fine-tuning lens is positioned and fixed using adhesive. After drying, annealing is repeated to relieve stress. During the positioning process, the above-mentioned lens moving, adhesive application, and annealing procedures can be repeated for each lens to ensure the focused spot is aligned with or as close as possible to the center point of the mating surfaces.

[0279] Figure 19 This is an explanatory diagram illustrating the movable distance of each lens in the lateral direction according to an embodiment of the present invention. The above description details how to find the focal point of the optical system so that it coincides with the center point of the mating surface MJ. Next, it explains how to actually adjust it. Before the explanation, as in the examples above, the lateral direction (horizontal direction) here refers to the direction perpendicular to the optical axis of the collimating lens 1720 relative to the drawing plane, or it may refer to the direction perpendicular to the axis of the optical system 1700. For ease of explanation, only the collimating lens 1720 is shown in the lens system of the optical system 1700 here, and... Figure 15A The long straight tubes shown are also omitted.

[0280] As described in the previously described embodiments, the collimating lens 1720 of the lens system in the optical system 1700 includes a lens body 1722 and a protruding ear 1724. Although the collimating lens 1720 is illustrated here, if a fine-tuning positioning lens is present, the fine-tuning positioning lens also includes a corresponding lens body and a protruding ear, which will be described again here.

[0281] The protruding ear 1724 can be inserted into the hole between the positioning rings 1702 and 1704, or clamped by two adjacent positioning rings 1702 and 1704. After insertion, a slight gap 1714 will exist between the protruding ear 1724 and the positioning rings 1702 and 1704. At this time, the protruding ear 1724 can be pressed into the hole between the positioning rings 1702 and 1704, but the protruding ear 1724 can still move slightly. In addition, the lens barrel 1710 has an adjustment hole 1712, which corresponds to the position of the protruding ear 1724. The protruding ear 1724 can be touched through the adjustment hole 1712 by a tool, thereby allowing the collimating lens 1720 to move in the lateral direction (in the direction shown by the arrow).

[0282] like Figure 19As shown, the distance between the lens edge point Q1 and the lens spacing endpoint Q2 of the collimating lens 1720 is the lateral movement distance L that the collimating lens 1720 can move. As described above, this optical system 1700 is placed within the aforementioned long straight tubes and illuminated by a uniform light source. Simultaneously, a monitoring device such as a camera is used on the other side of the long straight tube (e.g.,...). Figure 2A (As shown) Observe and find the focal point of optical system 1700.

[0283] Next, using a tool (such as a tool with a tip that can be inserted into the adjustment hole 1712), the protruding ear 1724 of the collimating lens 1720 is touched, thereby allowing the collimating lens 1720 to move slightly in the lateral direction. When the focal point of the optical system 1700 is aligned with the mating surface MJ of the optical system 1700 (as described above, the second window faces outwards), the collimating lens 1720 is no longer moved. Then, using glue or the like, the gap 1714 and the adjustment hole 1712 are filled through the adjustment hole 1712 to fix the collimating lens 1720 to the lens barrel 1710. Similarly, as described above, after fixing the collimating lens 1720 to the lens barrel 1710 with glue or the like, an annealing process is required. If necessary, further adjustments can be made using the aforementioned fine-tuning positioning lens, the adjustment method of which is the same as the adjustment method of the collimating lens 1720, and will not be described in detail here.

[0284] also, Figure 19 The long straight tube is omitted, but in actual adjustment, the optical system 1700 is inserted into the long straight tube. Therefore, when making adjustments, a hole also needs to be made on the tube wall of the long straight tube at the location corresponding to the adjustment hole 1712, so that the tool can be inserted from the tube wall of the long straight tube into the adjustment hole 1712 of the lens barrel 1710 to adjust the consistency between the focal point of the collimating lens 1720 and the center point of the mating surface MJ.

[0285] Figures 20A to 20D These are schematic diagrams illustrating several possible states for adjusting the focus of the aligned straight lens 1720 according to the present invention. For example... Figure 20A As shown, the optical system 1800 for the fiber optic connector is housed within the long straight tube 1900. Here, the long straight tube 1900 can employ the methods described above. Figures 15A to 15F , Figures 16A to 16B and Figure 17A and Figure 17B The various long straight tube structures 1000 and 1000A described are not limited in any way. However, in this example, the light source adopts a different form, namely an insertable light source module 1920. Here, the tube wall of the long straight tube 1900 can form a light source insertion hole 1930 corresponding to the size of the light source module 1920. The light source insertion hole 1930 is perpendicular to the axis of the long straight tube 1900.

[0286] As an example, the light source module 1920 includes at least a uniform light source 1922 and a light source holder 1924. During operation, the light source module 1920 can be inserted into the light source insertion hole 1930 on the upper side (or one side, relative to the drawing) of the long straight tube 1900. At this time, the uniform light source 1922 can generate a parallel beam of light that is incident on the optical system 1800. Of course, other methods can also be used, such as... Figures 15A to 15F A uniform light source 1100, etc., is set on the upper edge of a long straight tube 1000.

[0287] Furthermore, in this example, the optical system 1800 includes a collimating lens 1810, a lens barrel 1860, a first viewing window 1870, a second viewing window 1872, a second viewing window facing outward 1872a (i.e., the focusing surface, also known as the mating surface MJ), a positioning ring 1880a, and a positioning ring 1880b. This optical system 1800 is equivalent to the one described above. Figure 3E The difference between the described optical system 210E and others lies in Figure 3E The described optical system 210E is fitted into the alignment bushing 230 to form the optical system 210E for the female fiber optic connector 200E. Therefore, Figure 20A optical system and Figure 3E The optical system 210E described herein has corresponding components with the same or similar functions and structures, and its specific description can be found in [reference needed]. Figure 3E The description of the optical system 210E will not be detailed here.

[0288] Furthermore, the collimating lens 1810 further includes a lens body 1810a and a protruding ear 1810b. The tube wall of the lens barrel 1860 further forms an adjustment hole 1860a (see...). Figure 19 (Detailed description). The position of the adjustment hole 1860a corresponds to the protruding ear 1810b. Furthermore, there is a gap between the protruding ear 1810b and the adjustment hole 1860a, which allows the protruding ear 1810b and the adjustment hole 1860a to move while in contact, thereby allowing the assembler to adjust the amount of movement of the collimator 1810 in the lateral direction.

[0289] The long straight tube 1900 may further include an adjustment hole (long straight tube adjustment hole) 1910, the position of which corresponds to the adjustment hole 1860a of the lens barrel portion 1860. Thus, a tool can be inserted from the adjustment hole 1910 of the long straight tube 1900 into the adjustment hole 1860a of the lens barrel portion 1860, and then touch the protruding ear 1810b to move the collimating lens 1810 in the lateral direction (see arrow). This allows the focal point of the collimating lens 1810 to be aligned with the center point of the mating surface MJ (second window outward 1872a). Furthermore, during adjustment, the collimating lens 1810 is moved laterally by touching the protruding ear 1810b through the screen of the camera, which serves as the monitoring device 1950.

[0290] When the focal point of the collimating lens 1810 coincides with the center point of the mating surface, an adhesive material such as glue is injected through the adjustment hole 1860a as described above to fix the collimating lens 1810 to the lens barrel 1860.

[0291] also, Figure 20B The following is shown Figure 20A Examples of changes, as shown in the figure. Figure 20A Those with the same designation indicate the same or similar structure or function; for detailed descriptions, please refer to [reference needed]. Figure 20A .like Figure 20B As shown, in this embodiment, the optical system 1800A and Figure 20A The difference between the optical system 1800A and the optical system 1800A is that the optical system 1800A also includes a fine-tuning positioning lens 1820 and a positioning ring 1880c. The fine-tuning positioning lens 1820 also includes a lens body 1820a and a protruding ear 1820b.

[0292] In addition to the aforementioned adjustment hole 1860a, the tube wall of the lens barrel 1860 also has an adjustment hole 1860b. The position of the adjustment hole 1860b corresponds to the protruding ear 1820b of the fine-tuning positioning lens 1820, so that the assembler can adjust the amount of movement of the fine-tuning positioning lens 1820 in the lateral direction.

[0293] Similarly, the long straight tube 1900 may further include an adjustment hole 1912, the position of which corresponds to the adjustment hole 1860b (for the fine-tuning positioning lens 1820) of the lens barrel 1860. Thus, a tool can be inserted from the adjustment hole 1912 of the long straight tube 1900 into the adjustment hole 1860b of the lens barrel 1860, and then touch the protruding ear 1820b to move the fine-tuning positioning lens 1820 in the lateral direction (see arrow). This allows the focal point of the lens system (collimating lens 1810 plus fine-tuning positioning lens 1820) in the optical system to align with the center point of the mating surface MJ (i.e., the second window facing outwards 1872a). Furthermore, during adjustment, the tool touches the protruding ear 1820b via the screen of the camera, which serves as the monitoring device 1950, to move the fine-tuning positioning lens 1820 in the lateral direction. The function of the fine-tuning positioning lens 1820 can be found in [reference needed]. Figures 18A to 18C Explanation.

[0294] In this embodiment, after adjusting the focus of the optical system 1800A by adjusting the collimating lens 1810, the focus position may shift during processes such as gluing and annealing. Therefore, an additional fine-tuning positioning lens 1820 can be used to further adjust the focus position of the optical system 1800A. Similarly, a tool is used to touch the protruding ear 1820b of the fine-tuning positioning lens 1820. Once the focus of the optical system 1800A is further adjusted by the fine-tuning positioning lens 1820, the same gluing and annealing processes are performed. That is, for example, an adhesive material such as glue is injected through the adjustment hole 1912 and adjustment hole 1860b to fix the fine-tuning positioning lens 1820 to the lens barrel 1860. Afterward, an annealing process is performed to further reduce stress. If this is still insufficient, another fine-tuning positioning lens can be designed and added.

[0295] also, Figure 20C The following is shown Figure 20A and Figure 20B Examples of changes, as shown in the figure. Figures 20A to 20B Those with the same designation indicate the same or similar structure or function; for detailed descriptions, please refer to [reference needed]. Figure 20A and Figure 20B .like Figure 20C As shown, in this embodiment, the optical system 1800B is essentially the same as... Figure 20B Similar to the optical system 1800A, the difference lies in that the optical system 1800B also includes an annular mating surface carrier 1890 and mating surface carrier pressure feet 1892. For information on the mating surface carrier 1890 and mating surface carrier pressure feet 1892, please refer to... Figure 4 , Figures 5A to 5D and Figures 6A to 6F The descriptions of the various embodiments are omitted here.

[0296] Similarly, in Figure 20C In the example shown, the adjustment of the focal point of the optical system 1800B to align with the center point of the mating surface MJ further employs the method described in the second embodiment. As explained in the second embodiment, a gap exists between the mating surface carrier 1890 and the mating surface carrier pressure foot 1892. By moving the mating surface carrier 1890 in the lateral direction indicated by the arrow, the focal point of the optical system 1800B is aligned with the center point of the mating surface MJ. Similarly, after adjustment, adhesive or similar substances can be injected into the gap between the mating surface carrier 1890 and the mating surface carrier pressure foot 1892 for fixation. Alternatively, an annealing process can be further employed to further reduce stress.

[0297] Furthermore, although not drawn, in Figure 20C The mating interface carrier 1890 can also be replaced by the block-shaped mating interface carrier of the third embodiment described above, such as... Figures 7A to 7B and Figures 8A to 8D As shown. Furthermore, for details regarding the specific structure and adjustment methods of the block-shaped mating interface carrier, please refer to... Figures 9A to 9G Detailed descriptions of each implementation method are provided. Furthermore, regarding... Figure 20C The adjustment methods for the collimating lens 1810 and the fine-tuning positioning lens 1820 shown can be referred to Figure 20A and Figure 20B The explanation is omitted here.

[0298] Figure 20D exemplify Figure 20C The changes are basically the same in structure as... Figure 20C The same adjustment method is shown, where the focal point of the optical system 1800C is aligned with the center point of the mating interface MJ. Figures 20A to 20C They are the same. Figure 20D The optical system 1800C also includes an alignment bushing 1984 for fitting the entire lens barrel 1860 and its internal components. Figure 20D The resulting architecture is an optical system for a female fiber optic connector, and Figure 20C The system designed is an optical system for a public fiber optic connector; otherwise, its structure and function are essentially the same. Similarly, Figure 20A and Figure 20B In the architecture shown, the optical systems 1800, 1800A, etc., can also be configured as follows: Figure 20D Generally, optical systems are used to construct female fiber optic connectors.

[0299] Under this architecture, adjustment holes 1984a and 1984b can be further formed on the alignment bushing 1984 at positions corresponding to the protruding ears 1810b of the collimating lens (e.g., focusing lens) 1810 and the protruding ears 1820b of the fine-tuning positioning lens 1820 of the optical system 1800C. Thus, as... Figure 20D As shown, a tool can be inserted through the adjustment hole 1910 of the long straight tube 1900, the adjustment hole 1984a of the alignment bushing 1984, and the adjustment hole 1860a of the lens barrel 1860 to touch the collimating lens (e.g., the focusing lens) 1810, thereby finely adjusting the position of the collimating lens (e.g., the focusing lens) 1810 in the lateral direction. After adjustment, the collimating lens (e.g., the focusing lens) 1810 is fixed in the same manner as described above. Then, if necessary, a tool can be further used to touch the fine-tuning positioning lens through the adjustment hole 1912 of the long straight tube 1900, the adjustment hole 1984b of the alignment bushing 1984, and the adjustment hole 1860b of the lens barrel 1860, thereby adjusting the position of the fine-tuning positioning lens 1820 in the lateral direction. After adjustment, the fine-tuning positioning lens 1820 is fixed in the same manner as described above. Alternatively, the mating surface carrier 1890 can be used to... Figure 20C The adjustments will be made in the manner described.

[0300] Therefore, as described above, regardless of whether the optical system is configured as a male or female fiber optic connector, it can be adjusted in the manner described above so that the focal point of the optical system is aligned with the center point of the mating interface, thereby increasing the alignment accuracy between the optical system and the optical integrated circuit.

[0301] Next, examples of lens systems that can be implemented in several optical systems will be described. The examples given here are all applicable to the optical systems in the male or female fiber optic connectors described in the first to third embodiments above. Furthermore, these examples of various optical systems are not limited to these; the various methods described above for adjusting the focal point of the optical system to align with the mating interface can also be used to adjust the optical systems here. Moreover, the male and female fiber optic connectors constructed from these optical systems can be coupled to optical integrated circuits including detectors, transmitters, optical fibers, or waveguides.

[0302] In summary, in the above embodiments, the lens system in the optical system is illustrated using a collimating lens as an example, or a combination of a collimating lens and a fine-tuning positioning lens as an example. However, the lens system of the present invention is not limited to this. The lens system may include one or more collimating lenses, and may further include one or more fine-tuning positioning lenses. The number and arrangement of the collimating lenses and fine-tuning positioning lenses can be appropriately set according to requirements. Several examples are given below for illustration.

[0303] Figure 21An exemplary example of a lens system in the optical system of the present invention is shown. For example... Figure 21 As shown in the embodiments described above, the optical system 2000A may include a lens barrel 2010, a first viewing window 2020, a second viewing window 2022 (with a second viewing window facing outward as a mating surface MJ 2022a), a collimating lens 2040, positioning rings 2030a, 2030b, 2030c, etc. This structural description can be found in [reference needed]. Figure 5A The explanation. Only with Figure 5A The difference lies in the fact that the collimating lens 2040 of the lens system employs a double lens, comprising a biconvex lens 2040a and a biconcave lens 2040b. Here, the biconvex lens 2040a also consists of a lens body 2040a1 and a protruding ear 2040a2, while the biconcave lens 2040b also consists of a lens body 2040b1 and a protruding ear 2040b2. Furthermore, the lens barrel 2010 also similarly has an adjustment hole 2012 for adjusting and fixing the focus of the collimating lens 2040. Additionally, the optical system 2000A may also include a fine-tuning positioning lens 2042 composed of a double lens, comprising a biconvex lens 2042a and a biconcave lens 2042b. Here, the biconvex lens 2042a is also composed of a lens body 2042a1 and a protruding ear 2042a2, and the biconcave lens 2042b is also composed of a lens body 2042b1 and a protruding ear 2042b2. Furthermore, the lens barrel 2010 also has an adjustment hole 2014 corresponding to the fine-tuning positioning lens 2042, for adjusting and fixing the focus of the fine-tuning positioning lens 2042. The function of a double lens is to allow incident light of different wavelengths to be focused at a single point, which is impossible with a single lens. In addition, generally speaking, the higher the magnification of the optical system, the more lenses are required.

[0304] Furthermore, in the case of a collimating lens with multiple lenses, when adjusting the focus of the 2000A optical system, each lens can be adjusted individually, and the adjustment method is as follows: Figure 19 and Figures 20A to 20D The methods described above will not be repeated here.

[0305] In addition, Figure 21 The second window 2022 is embedded within the lens barrel portion 2010. This architecture is suitable for further providing a mating interface carrier on the outer surface 2022a of the second window 2022, as illustrated in the figures of the second and third embodiments. Of course, if the mating interface carrier is not provided, the outer surface 2022a of the second window 2022 can be aligned with the end face (optical integrated circuit side) of the lens barrel portion 2010.

[0306] also, Figure 21The optical system 2000A shown is suitable as a male fiber optic connector. Of course, if it is to be used in a female fiber optic connector, the optical system 2000A can be further fitted into an alignment bushing.

[0307] Furthermore, the varied structures of various components such as lens barrels and alignment bushings in the optical systems described in the figures of the first to third embodiments can also be adopted. Figure 21 The lens systems and their various derivative structures will not be described in detail here. Those skilled in the art can make appropriate changes and modifications, all of which are within the scope of this invention.

[0308] Figures 22A to 22E This is a schematic diagram illustrating the movement of the focal point when a fine-tuning positioning lens generates displacement, according to another embodiment of the present invention. Figures 18A-18C The difference is that, Figure 22A The optical system's lens system consists only of a first lens L1' and a second lens L2', where the first lens L1' is equivalent to... Figures 18A-18C The double lens, and the second lens L2' is equivalent to Figures 18A-18C The third lens L3. In this embodiment, the second lens L2' is designed as a plano-convex lens, and the focal point is designed on the plane of this plano-convex lens. Figure 22A The relationship between the vertical displacement of the first lens L1' and the second lens L2' in the lens system of the optical system shown and the displacement of the light spot position is as follows: Figures 18A-18C The similarities are not discussed further.

[0309] Figure 22B In addition to including Figure 22A In addition to the optical system, the lens system also includes a third lens L3' located between the first lens L1' and the second lens L2'. Unlike the first lens L1' and the second lens L2', the third lens L3' is a microconvex lens, close to a plano lens. In other words, the light-gathering effect of the third lens L3' is far less than that of the first lens L1' and the second lens L2'. Therefore, when the third lens L3', the first lens L1', and the second lens L2' have the same principal optical axis, the third lens L3' hardly changes the focal point of the first lens L1' and the second lens L2' (in this case, the focal point is the focal point). For simplicity and clarity, the following explanation assumes that the third lens L3' does not change the focal point, but this can be considered in actual manufacturing.

[0310] For ease of explanation, the second lens L2' is first removed from the optical system, as follows: Figure 22C As shown in the diagram, point F3 represents the focal point of the first lens L1', and its distance from the third lens L3' is DA. Figure 22A and 22BIn comparison, since the focusing effect of the third lens L3' is ignored, the position of point F3 remains unchanged. In this configuration, moving the third lens L3' by a vertical displacement bA relative to the first lens L1' will cause point F3 to shift by a certain displacement. Its size is: Wherein, the focal length fA refers to the focal length of the third lens L3'. The derivation of this result is similar to that of equation (17), so it will not be repeated here.

[0311] Now add the second lens L2' back into the optical system, as follows: Figure 22D As shown, due to the vertical displacement bA between the third lens L3' and the first lens L1', point F3 moves to point F3', which is a displacement of the principal optical axis between the first lens L1' and the second lens L2'. Now consider the image formed by point F3' through the second lens L2'. According to Gauss's formula: Where the focal length f2' is the focal length of the second lens L2', and the distance D3 is the image distance of point F3' formed by the convex surface of the second lens L2'. In this embodiment, the imaging point is on the plane of the second lens L2'. Therefore, the distance D3 is the thickness of the second lens L2', and the distance D4 is the horizontal distance from point F3' to the center of the convex surface of the second lens L2'.

[0312] Since point F3' is not on the principal optical axis of the second lens L2', the point formed by its image through the second lens L2' will also not be on the principal optical axis of the second lens L2'. To calculate the distance between the point formed by the image of point F3' and the principal optical axis, the standard method is to consider an object formed by the line segment connecting point F3' and point F3, and to consider the image height displacement of this object after being imaged by the second lens L2'. Since the height of this virtual object is its displacement. From the magnification of the lens, we can know that: Solving for: This is the displacement of the final light spot caused by moving the third lens L3' by a vertical displacement bA. .

[0313] Similarly, one could consider placing additional microconvex lenses, besides the third lens L3', between the first lens L1' and the second lens L2', such as... Figure 22EThe diagram illustrates the fourth lens L4'. Similarly, if the second lens L2' and the third lens L3' are removed, and the fourth lens L4' is moved by a vertical displacement bA', it will cause point F3' to shift by a displacement. Its size is: Wherein, the focal length fA' refers to the focal length of the fourth lens L4'. The derivation of this result is similar to that of equation (17), so it will not be repeated here.

[0314] Consider the movement and displacement of the light spot under this condition. Similarly, we can know from the magnification of the lens: Solving for: This is the displacement of the final light spot caused by moving the fourth lens L4' by a vertical displacement bA'. In fact, the movement of the light spot produced by the movement of the third lens L3' The movement of the light spot produced by the fourth lens L4' The sum of the movement of the light spot is the vector sum on the plane.

[0315] The following table lists as follows Figure 22D The focal length fA of the third lens L3' in the optical system is related to the distance the light spot moves. The calculations in this table are based on the following parameters: the focal length f2' of the second lens L2' is 14.2 mm, the distance between the third lens L3'' and the second lens L2' is 2 mm, the horizontal distance D3 from the center of the second lens L2' after point F3' is imaged by the second lens L2' is 3.6 mm, and the moving distance of the third lens L3' is 1 µm.

[0316] Figures 23A to 23D These are schematic diagrams illustrating the structure of an optical system with male and female connectors according to another embodiment of the present invention. Figure 23A Compared to the male connector shown, Figure 23B It also includes an additional alignment bushing 2360 (equivalent to Figure 3A(Alignment bushing 230). In this embodiment, the circular shell 2330 is located between the lens barrel and the lens system. The lens system includes two focusing lenses, and the first lens 2310 is surrounded by the circular shell 2330, with a portion of the circular shell 2330 fitted inside the lens barrel 2340. The circular shell 2330 is divided into a first part 2331 and a second part 2332. The first part 2331 surrounds the circular shell 2330, while the second part 2332 is a positioning ring for the lens (equivalent to...). Figure 3A The positioning rings 214a and 214b) are two parts that can be separated and moved in the z-direction. Whether or not to move them depends on the situation. Figure 23A and Figure 23B In this configuration, neither the mating surface carrier 2350 nor the second lens 2320 moves relative to the other in the z-direction. Since both the mating surface carrier 2350 and the second lens 2320 can move in the x and y directions, and their adhesive application and fixing times are not necessarily the same, adhesive can be applied and stress-relieved after the mating surface carrier 2350 is adjusted, followed by adjustment of the second lens 2320. When applying adhesive to the mating surface carrier 2350, a barrier is used to prevent the second lens 2320 from being coated. After adhesive application to the mating surface carrier 2350, one side of the mating surface carrier 2350 needs to be attached to the focusing surface 2321 to avoid errors caused by camera position when determining the center point. Figure 23A and Figure 23B The connector can be used for optical fibers. Figure 23C and Figure 23D The connectors respectively correspond to Figure 23A and Figure 23B The connector, with Figure 23A and Figure 23B The difference in the connector is that it has a different shape of mating face carrier 2350, which can be used for transmitters or detectors.

[0317] Figures 24A to 24C Drawing fixed and adjusted as follows Figure 23A and Figure 23B A schematic diagram of the connector device. (See attached diagram.) Figure 24A As shown, in addition to the connectors, the lower desktop 2410, the z-axis fine-tuning platform 2420, the upper desktop 2430, and the camera 2440 are also illustrated. Figure 24AIn the middle, the lens barrel 2340 of the connector is fixed to the upper table 2430, while the lower table 2410 has a z-direction fine adjustment platform 2420, a laser light source 2450, a bracket 2460 (which can also be regarded as a long straight tube) and a fixing member 2461 on the bracket 2460. The fixing member 2461 on the bracket 2460 is used to fix the first part 2331 of the circular shell 2330 and the first lens 2310 located in the circular shell, so that the first lens 2310 can move with the z-direction fine adjustment platform 2420 and the bracket 2460, and the distance between the first lens 2310 and the second lens 2320 can be adjusted by observing through the camera 2440, thereby controlling the focusing surface of the light. After the adjustment is completed, the gap between the first part 2331 and the second part 2332 of the circular shell 2330 is filled.

[0318] Figure 24B and Figure 24C The diagram shows the xy fine-tuning platforms 2470 and 2470a used to adjust the mating interface carrier 2350 and the second lens 2320. Figure 24A The difference is that, Figure 24B and Figure 24C The light source is an average light source 2450a and also includes a mating interface carrier 2350. Figure 24B and Figure 24C The difference is that, Figure 24B What is depicted is a fiber optic connector, and Figure 24C It is the connector for the detector or transmitter.

[0319] Figure 25A and Figure 25B These are schematic diagrams illustrating a device for connecting a waveguide within a device, according to another embodiment of the present invention. Figures 24A to 24C The difference is that, Figure 25A and Figure 25B The light source is provided by optical fiber 2450b, and includes a third lens 2510 with a longer focal length for adjusting the movement of the light spot, and a male optical fiber lens 2451. Figure 25A The fiber optic lens 2451 is the first lens. Figure 25B The first lens is the first lens 2310. Regarding adjustment... Figure 25A and Figure 25B The method and adjustment of the device Figures 24A to 24C The method of the device is the same, so it will not be described in detail.

[0320] Figure 26 Draw Figure 25A and Figure 25B A schematic diagram of the bracket 2460 of the connector device. As shown, the bracket 2460 has a groove 2462 to allow the optical fiber to pass through the bracket 2460 (which can also be regarded as a long straight tube).

[0321] Figures 27A to 27B Drawing fixed and adjusted as follows Figure 25A and Figure 25B A schematic diagram of the connector device. As shown in the figure, Figure 27A Compared Figure 25B It also includes a mating interface carrier 2350 and three sets of XY fine-tuning platforms 2470, 2470a, and 2470b. Similarly, Figure 27B Compared Figure 25A It also includes a mating interface carrier 2350 and three sets of xy fine-tuning platforms 2470, 2470a and 2470b. At this point, the z-direction is fixed, and the first part 2331 and the second part 2332 of the circular shell 2330 are the positioning rings.

[0322] Figure 28A and Figure 28B This is a schematic diagram illustrating the use of XY fine-tuning platforms to adjust the position according to some embodiments of the present invention. As shown, two or three XY fine-tuning platforms are used to adjust the mating contact carrier and lens of the connector. Figure 28A In this configuration, three XY fine-tuning platforms 2470, 2470a, and 2470b are used to adjust the mating contact carrier 2350 of the connector and the aforementioned lenses 2320 and 2510, wherein the connector can be as follows: Figure 27A and Figure 27B The connector shown. Figure 28B In this configuration, two XY fine-tuning platforms 2470 and 2470a are used to adjust the mating face carrier 2350 of the connector and the aforementioned lens 2320, wherein the connector can be as follows: Figure 24B and Figure 24C The connector shown.

[0323] Figure 28C This is a schematic diagram of an xy fine-tuning platform 2470 according to some embodiments of the present invention. As shown, the xy fine-tuning platform 2470 includes a clamping portion 2471 that can move in one dimension, configured to clamp an object whose position needs to be adjusted, such as a lens and a mating surface carrier. Furthermore, the xy fine-tuning platform 2470 also includes a flat plate 2472 that supports the clamping portion 2471, a stepper motor 2473 that controls the tension of the clamping portion 2471, and a first adjusting rod 2474 and a second adjusting rod 2475 for adjusting the x and y directions of the fine-tuning platform, respectively.

[0324] Figure 29This is a partially enlarged view of the clamping portion 2471 and lens 2910 of an xy fine-tuning platform according to some embodiments of the present invention. As shown, the surface of the clamping portion 2471 of the xy fine-tuning platform contacts the lens 2910, and the surface of the clamping portion 2471 has longitudinal rows of fine serrated grooves 2920, configured to ensure that the clamping portion of the xy fine-tuning platform can clamp the lens 2910. Other component surfaces that contact the clamping portion 2471 of the xy fine-tuning platform may also have longitudinal rows of fine serrated grooves 2920.

[0325] Figure 30 A schematic diagram of a fiber optic connector according to some embodiments of the present invention is shown. As shown, the fiber optic connector includes a male connector portion 3010 and a female connector portion 3020, and a copper wire 3050 for connecting power and electrical signals. Each of these includes an optical fiber 3030, a fiber optic lens 3040, and a support 3060 surrounding the lens. The fiber optic lens 3040 of each of the male connector portion 3010 and the female connector portion 3020 is surrounded by a viewing window 3070 and a lens barrel portion 3080. The lens barrel portion 3080 of the female connector portion 3020 is also fitted with an alignment bushing 3090, and the alignment bushing 3090 includes a positioning ring 3100 on its outer side. A gap is left between the positioning ring 3100 and the alignment bushing 3090 to allow the fiber optic lens 3040 of the female connector portion 3020 to finely adjust its position. Each of the male connector portion 3010 and the female connector portion 3020 has a base portion at one end of its lens barrel portion 3080, and a blocking member 3110 is included where the optical fiber passes through the base portion, configured to prevent water from entering the lens barrel portion and to prevent the optical fiber from bending.

[0326] Figure 31 Illustration as follows Figure 30 A three-dimensional view of the male connector portion of a fiber optic connector. As shown in the figure. Figure 31 Including four such Figure 30 The fiber optic connector includes the male connector portion 3010 and copper wire 3050. In the figure, the fiber optic cable enters from the rear and disperses the light to the four male connector portions 3010.

[0327] In the above text, all lenses can be used as... Figure 32 The 3200 (doublet lens) consisting of a convex and a concave lens is used to eliminate chromatic aberration. If necessary, an aspherical design can also be added so that light of different wavelengths can converge to the same point after being refracted by the lens.

[0328] Figure 33A A schematic diagram illustrating a mating face carrier 2350 and a mating body 2352 of a connector according to some embodiments of the present invention is shown. Figure 13A and Figure 13B and Figure 14A and Figure 14BThe difference is that, Figure 33A The mating surface carrier 2350 has a stepped inner surface, while the mating body 2352 has a stepped outer surface and a protruding platform 2353 on top. Thus, when the mating body 2352 is inserted into the mating surface carrier 2350, the protruding platform 2353 on top of the mating body 2352 contacts the mating surface MJ of the mating surface carrier 2350, and the subsequent steps couple step-by-step with the inner surface of the mating surface carrier 2350. In other words, when the mating body 2352 is inserted, the protruding platform 2353 on top will be in close contact with the mating surface MJ, and the stepped structure of the mating body 2352 will be inserted into the mating surface carrier 2350 step by step, ensuring that the protruding platform 2353 and the recess 2354 will finally engage precisely.

[0329] Figure 33B A schematic diagram illustrating a mating face carrier 2350a and a mating body 2352a of a connector according to some embodiments of the present invention is shown. Figure 33A The difference is that, Figure 33B The inner surface of the mating surface carrier 2350a is approximately an isosceles trapezoid, with a shorter top edge near the connector. A recess 2354a on the top edge connects to the mating surface MJ. The mating body 2352a has an outer surface that is approximately an isosceles trapezoid and a protruding platform 2353a on its top surface. Thus, when the mating body 2352a is inserted into the mating surface carrier 2350a, the protruding platform 2353a on the top surface of the mating body 2352a enters the recess 2354a and contacts the mating surface MJ of the mating surface carrier 2350a. The inner surface of the isosceles trapezoid of the mating surface carrier couples with the outer surface of the isosceles trapezoid of the mating body 2352a.

[0330] In addition, Figure 13A and Figure 14A In this case, the light first passes through the mating interface carrier and is directly focused onto the mating interface carrier, so when designing the lens, one can... Figure 13A and Figure 14A The mating interface carrier must be taken into account. That is, the mating interface carrier is part of the optical system. And... Figure 33A and Figure 33B In cases where this is not necessary, the design and manufacturing are relatively simple.

[0331] Figure 34 A schematic diagram illustrating a connector device according to some embodiments of the present invention is shown. Figure 27B The difference is that, Figure 34 The connector also includes a fourth lens 3410 with a longer focal length for adjusting the movement of the light spot and a fourth xy fine-tuning platform 2470c. During the adjustment process, the third lens 2510 and the fourth lens 3410 are not glued at the same time.

[0332] Figures 35A to 35C A schematic diagram illustrating a connector comprising an encapsulation structure and physical contact with an optical fiber according to some embodiments of the present invention is shown. Figures 35A to 35C In the case of a fiber optic connector that has completed its focusing behavior, including the hole reserved for the fiber optic connector in the encapsulation structure 3610 for various reasons, the focusing point does not fall correctly at the midpoint of the waveguide, which is a sign of poor yield.

[0333] To overcome the problem of poor yield Figures 35A to 35C The connector, including its encapsulation structure and physical contact with the optical fiber, can be adjusted in the following way. First, determine the appropriate location based on the encapsulation structure used, and drill a hole at that location to form an opening 3612. Then, add a fine-tuning lens 3510 as needed. The fine-tuning lens 3510 can be located in different positions or have different shapes. In other words, Figures 35A to 35C They are similar, the only difference being the position and shape of the fine-tuning lens 3510, the choice of which depends on the shape of the package and the waveguide.

[0334] exist Figures 35A to 35C During the corresponding adjustment process, light enters the waveguide via fiber optic cable 2450b and then via fine-tuning lens 3510, and obtains the optical signal at an appropriate node in the integrated optical path. Because the cross-section of the waveguide is rectangular, the signal pattern obtained after scanning the fine-tuning lens 3510 will also be a blurry rectangle. At this time, the fine-tuning lens 3510 can be adjusted by the xy fine-tuning platform 2470b through the opening 3612, so that the light spot hits the center point of this blurry rectangle, thus completing the positioning.

[0335] The lens used in the above text can also be replaced by, for example, a diffraction grating, a Fresnel lens, a superconducting lens, or a simple condenser lens.

[0336] In summary, this invention utilizes the observation of the light spot imaged on the imaging plane of the optical system, and uses the protruding tabs of the focusing lens and / or fine-tuning lens to move the focusing lens and / or fine-tuning lens laterally, so that the focal point of the optical system can be aligned with the center point of the mating surface. Furthermore, a mating surface carrier is also provided in the optical system, which can be moved laterally to ensure that the focal point of the optical system is aligned with the center point of the mating surface. Therefore, without the use of a complex collimator, calibration costs can be reduced, while simultaneously obtaining a precisely aligned fiber optic connector.

Claims

1. An optical fiber connector, characterized in that, include: Optical system, including: Lens tube section; A lens system, disposed within the lens barrel portion, the lens system including at least one focusing lens, wherein the outermost lens of the lens system is a planar focusing surface and serves as a mating surface; and A circular shell, located between the lens barrel and the lens system; and An optical integrated circuit is coupled to the optical system; The focal point of the lens system in the optical system is configured to coincide with the center point of the mating interface.

2. The fiber optic connector as described in claim 1, characterized in that, The lens system includes two focusing lenses, and the circular shell includes a separate first part and a second part, with one of the two focusing lenses surrounded by the first part of the circular shell.

3. The fiber optic connector as described in claim 1, characterized in that, The optical system also includes: The encapsulation structure is located on the outside of the optical system.

4. An adjustment device for an optical system, used to adjust the optical system of a fiber optic connector, characterized in that, The adjustment device includes: A long straight tube has a first opening, a second opening, and a fixing member. The optical system is inserted through the second opening, and the fixing member is located on the long straight tube and is configured to fix the circular shell of the optical system. A light source, positioned around the periphery of the first opening, is used to illuminate the optical system; and A monitoring device is positioned towards the second opening of the long straight tube to monitor the light spot imaged by the optical system. The optical system includes a lens barrel and a lens system. The lens system is disposed within the lens barrel and includes at least one focusing lens. The outermost lens of the lens system serves as the focusing surface and also as the mating surface. The at least one focusing lens is composed of a lens body and a protruding ear. The lens barrel also has at least one lens barrel adjustment hole on its wall perpendicular to the optical axis of the optical system, corresponding to the protruding ear of the at least one focusing lens. The long straight tube also has at least one long straight tube adjustment hole on its wall that is aligned with the at least one adjustment hole in the lens barrel section. The light spot on the screen of the monitoring device is moved by a tool through the at least one long straight tube adjustment hole and the at least one lens barrel adjustment hole in a lateral direction perpendicular to the optical axis, so that the light spot is aligned with the center point of the mating surface.

5. The adjustment device as described in claim 4, characterized in that, The light source is a laser light source.

6. The adjustment device as described in claim 4, characterized in that, The light source is an optical fiber light source.

7. The adjustment device as described in claim 4, characterized in that, The long straight pipe also includes: A trench, located on the long straight tube, is configured to allow an optical fiber to pass through the long straight tube.

8. The adjustment device as described in claim 4, characterized in that, It also includes a tool for moving the protruding ear in a lateral direction perpendicular to the optical axis, comprising: The clamping part is configured to hold the object; A flat plate, located below the clamping portion, is configured to support and move the clamping portion on a plane; A stepper motor is located between the clamping portion and the plate, configured to control the tension of the clamping portion.

9. The adjusting device as described in claim 8, characterized in that, The tool also includes: A first adjusting lever, located below the plate, is configured to adjust the movement of the plate in a first direction; and A second adjustment lever, located below the plate, is configured to adjust the movement of the plate in a second direction.

10. The adjusting device as described in claim 8, characterized in that, The surface of the clamp portion that contacts the object has longitudinal serrated grooves, configured to increase the friction between the clamp portion and the object.

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