A collimating device

Abstract

The utility model relates to the field of optical communication technology, especially a collimation device, including collimator, first support, second support and substrate, is seted up with the mounting groove on the substrate, and the collimator is partially held in the mounting groove, and first support and second support all set up on the substrate, and respectively located the two sides of mounting groove, wherein, the side of first support close to collimator and the side of second support close to collimator all are equipped with step structure, the step structure extends to the mounting groove, to hold and clamping collimator, the scheme is adjusted and fixed through the mode of holding and clamping collimator, and the step structure can provide the avoidance space for the multidimensional free rotation of collimator, realize the high accuracy adjustment of collimator, and the clearance between the both ends of collimator and first support and second support is small, so that in subsequent welding process, can satisfy the requirement that the clearance between the welding piece is small for laser welding.

Description

Technical Field

[0001] This utility model relates to the field of optical communication technology, and in particular to a collimation device. Background Technology

[0002] In the field of optical communication, collimators are commonly used optical components for collimating and focusing light beams. The adjustment and fixation of collimators are crucial in product design, directly impacting product performance and quality. Existing solutions for adjusting and fixing a single collimator primarily involve a sleeve design. This involves placing the collimator inside a cylindrical tube with a diameter larger than its outer diameter, clamping and adjusting the collimator. Once the adjustment position is confirmed, it is fixed between the collimator and the inner diameter of the sleeve using glue or solder. However, this solution offers a small adjustable angle, resulting in low adjustment accuracy and significant difficulty. Another method involves adjusting using an adjusting screw and nut. The adjusting screw is used to push the collimator to a certain rotation angle, and then the nut is used to lock it in place. This method requires high screw precision, and fixing the contact position between the adjusting screw and the collimator is challenging.

[0003] Therefore, designing a collimation device with high adjustable accuracy and low adjustment difficulty is of great importance to those skilled in the art. Utility Model Content

[0004] This utility model provides a collimation device with high adjustable accuracy and low adjustment difficulty, so as to solve the problems of small adjustable angle, low adjustment accuracy and high adjustment difficulty in the prior art.

[0005] This utility model discloses a collimation device, which includes: a collimator, a first bracket, a second bracket, and a base plate. The base plate has a mounting groove, and the collimator is partially housed in the mounting groove. The first bracket and the second bracket are both disposed on the base plate and are located on opposite sides of the mounting groove. The first bracket near the collimator and the second bracket near the collimator each have a stepped structure, which extends into the mounting groove to clamp the collimator.

[0006] Optionally, the collimator includes a base, a rotation operating element, and a collimation matrix lens. The base is disposed in the mounting groove and connected to the first bracket and the second bracket respectively. The collimation matrix lens is disposed at the bottom of the base, and the rotation operating element is disposed at the top of the base for driving the base to rotate relative to the substrate.

[0007] Optionally, the base is square, and the mounting groove is a square groove.

[0008] Optionally, a gap is provided between the two sides of the base and the two side walls of the mounting groove.

[0009] Optionally, an adhesive layer is provided in the gap for bonding the collimator to the wall of the mounting groove.

[0010] Optionally, solder is provided in the gap for welding the collimator to the wall of the mounting groove.

[0011] Optionally, both the first bracket and the second bracket are connected to the substrate by screws.

[0012] Optionally, both the first bracket and the second bracket are made of stainless steel.

[0013] Optionally, the substrate is made of stainless steel.

[0014] Optionally, both the base and the rotating operating component are made of Kovar alloy and are integrally formed.

[0015] The beneficial effects of the collimation device provided in this embodiment of the present invention are as follows: By designing a collimation component, including a collimator, a first support, a second support, and a base plate, a mounting groove is provided on the base plate, and the collimator is partially housed in the mounting groove. The first support and the second support are both disposed on the base plate and are located on opposite sides of the mounting groove. The side of the first support near the collimator and the side of the second support near the collimator are both provided with stepped structures, which extend into the mounting groove to clamp the collimator. This solution adjusts and fixes the collimator by clamping, and the stepped structure can provide clearance space for the multi-dimensional free rotation of the collimator, achieving high-precision adjustment of the collimator. Moreover, the gap between the two ends of the collimator and the first and second supports is small, so that in the subsequent welding process, the requirement of small gap between welded parts in laser welding can be met. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the collimation device in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the first support in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the second bracket in an embodiment of this utility model;

[0020] Figure 4 This is a bottom view of the collimation device in an embodiment of this utility model.

[0021] The labels for the attached figures are as follows:

[0022] 100, collimator; 200, first support; 300, second support; 400, substrate; 410, mounting groove; 500, stepped structure; 700, screw; 510, beveled part; 520, protrusion; 110, base; 120, rotating operating element; 130, collimating matrix lens; 610, through hole. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] like Figures 1 to 4 As shown, this utility model provides a specific embodiment of a collimation device.

[0025] A collimation device, reference Figures 1 to 3 The collimation device includes a collimator 100, a first support 200, a second support 300, and a base plate 400. A mounting groove 410 is provided on the base plate 400, and the collimator 100 is partially housed in the mounting groove 410. The first support 200 and the second support 300 are both disposed on the base plate 400 and are located on opposite sides of the mounting groove 410, respectively. The first support 200 and the second support 300 near the collimator 100 are both provided with a stepped structure 500. The stepped structure 500 extends into the mounting groove 410 to clamp and hold the collimator 100.

[0026] Specifically, refer to Figures 1 to 3 The substrate 400 serves as the basic support structure of the collimation device, providing a stable mounting platform for other components. Its material is preferably a metal with high mechanical strength and good stability, such as aluminum alloy, which is manufactured by CNC precision machining. Its surface can be anodized to enhance wear resistance and corrosion resistance. Alternatively, stainless steel can be used, as it has excellent tensile strength and hardness, and can withstand the assembly stress of the collimator 100, the first support 200, and the second support 300. This not only prevents the substrate 400 from deforming to ensure the long-term positional stability of the collimation device, but also avoids collimation offset caused by external forces or vibrations.

[0027] refer to Figure 1 and Figure 4The collimator 100 is a square collimator 100, and the mounting groove 410 is a square groove. The mounting groove 410 is set to accommodate part of the collimator 100, realize the initial positioning and limit of the collimator 100, and prevent the collimator 100 from undergoing large displacement in the horizontal direction. An appropriate gap is reserved between the mounting groove 410 and the collimator 100 to facilitate the installation and removal of the collimator 100. The mounting groove 410 extends along the length of the substrate 400 and is located at the center of the substrate 400. By arranging the collimator 100 in the center, the weight of the collimator 100 and the external load can be evenly distributed on both sides of the substrate 400, thereby avoiding stress concentration on one side caused by offset installation, reducing the risk of substrate 400 deformation, thereby improving the stability of the overall structure and extending the service life of the collimation assembly.

[0028] refer to Figures 1 to 3 The first bracket 200 and the second bracket 300 are both made of stainless steel. Stainless steel has excellent tensile strength, which can effectively resist the installation preload and working vibration of the collimator 100, prevent plastic deformation of the first bracket 200 and the second bracket 300, and ensure the long-term positioning accuracy of the collimator 100. In addition, the first bracket 200 and the second bracket 300 made of stainless steel have the same coefficient of thermal expansion as the stainless steel base plate 400, which can avoid assembly stress caused by temperature changes, thereby avoiding the collimator 100 from shifting or the bracket from cracking.

[0029] refer to Figures 1 to 4 Both the first bracket 200 and the second bracket 300 can be fixed to the base plate 400 by screws 700. Both the first bracket 200 and the second bracket 300 near the collimator 100 are provided with stepped structures 500. The stepped structure 500 of the first bracket 200 is divided into two parts, namely a beveled part 510 and a protrusion 520. The stepped structure 500 of the second bracket 300 is also divided into a beveled part 510 and a protrusion 520. The beveled part 510 of the first bracket 200 extends from one side of the mounting groove 410 into the mounting groove 410. The beveled part 510 of the second bracket 300 extends from the other side of the mounting groove 410 into the mounting groove 410, so that the protrusion 520 of the first bracket 200 and the protrusion 520 of the second bracket 300 together hug and clamp the collimator 100 in the mounting groove 410.

[0030] The inclined portion 510 of the first support 200 and the collimator 100, as well as the inclined portion 510 of the second support 300 and the collimator 100, can define adjustment spaces to facilitate the collimator 100 to rotate freely in multiple dimensions, thereby achieving high-precision adjustment of the collimator 100.

[0031] In this embodiment, a collimation assembly is designed, including a collimator 100, a first support 200, a second support 300, and a substrate 400. A mounting groove 410 is formed on the substrate 400, and the collimator 100 is partially housed within the mounting groove 410. The first support 200 and the second support 300 are both disposed on the substrate 400 and located on opposite sides of the mounting groove 410. Both the side of the first support 200 closest to the collimator 100 and the side of the second support 300 closest to the collimator 100 have stepped structures 5. The stepped structure 500 extends into the mounting groove 410 to clamp the collimator 100. This scheme adjusts and fixes the collimator 100 by clamping. The stepped structure 500 can provide clearance for the multi-dimensional free rotation of the collimator 100, realizing high-precision adjustment of the collimator 100. Moreover, the gaps between the two ends of the collimator 100 and the first support 200 and the second support 300 are small, so that in the subsequent welding process, the requirement of small gaps between welded parts in laser welding can be met.

[0032] In one embodiment, reference Figure 1 and Figure 4 The collimator 100 includes a base 110, a rotation operating member 120, and a collimating matrix lens 130. The base 110 is disposed in the mounting groove 410 and connected to the first bracket 200 and the second bracket 300 respectively. The collimating matrix lens 130 is disposed at the bottom of the base 110, and the rotation operating member 120 is disposed at the top of the base 110 for driving the base 110 to rotate relative to the substrate 400.

[0033] Specifically, refer to Figure 1 and Figure 4 The base 110 is fixed to the substrate 400 by the first bracket 200 and the second bracket 300. The collimating matrix lens 130 is disposed at the bottom of the base 110. Specifically, the collimating matrix lens 130 can be fixed to the bottom of the base 110 by optical grade adhesive with a high-precision bonding process. The collimating matrix lens 130 is composed of a matrix array structure of multiple microlens units. Each microlens unit is precision ground and polished to ensure high precision of light collimation. When light is incident on the collimating matrix lens 130, each microlens unit can collimate the diverging light into a parallel beam, realizing an efficient light collimation function.

[0034] In one embodiment, reference Figure 1 and Figure 4A gap is provided between the two sides of the base 110 and the two sides of the mounting groove 410. On the one hand, the gap can provide adjustable space for the adjustment of the collimator 100. On the other hand, the gap can be filled with a connecting material for fixing the collimator 100 and the substrate 400. The connecting material can be glue. By filling the gap with glue and heating it to cure it to form an adhesive layer, the collimator 100 can be bonded to the groove wall of the mounting groove 410. The connecting material can also be solder. By filling the gap with solder and then welding the collimator 100 to the groove wall of the mounting groove 410 by laser welding.

[0035] In one embodiment, reference Figures 1 to 3 Both the first bracket 200 and the second bracket 300 are connected to the base plate 400 by screws 700. Each of the first bracket 200 and the second bracket 300 has at least one through hole 610. The base plate 400 has a threaded hole corresponding to the through hole 610. The screw 700 can pass through the through hole 610 and be tightened into the threaded hole. The existing screw fixing method involves directly connecting the collimator and the fixed bracket via an adjusting screw and an adjusting nut. The collimator is rotated by the square adjusting screw, and then locked to the fixed bracket by the adjusting nut. This method allows for adjustment... The difficulty lies in the high precision required for the screw, and the difficulty in fixing the contact position between the adjusting screw and the collimator. In this embodiment, the first bracket 200 and the second bracket 300 are first fixed on the base plate 400, and then the collimator 100 is initially positioned by the movable engagement of the first bracket 200 and the second bracket 300 with the collimator 100. Since there is an adjustment space reserved between the collimator 100 and the stepped structure 500 on the first bracket 200 and the second bracket 300, the collimator 100 can be freely rotated and finely adjusted in angle, which is convenient to operate and can greatly reduce the difficulty of adjustment.

[0036] In one embodiment, both the base 110 and the rotating operating component 120 are made of Kovar alloy. The base 110 and the rotating operating component 120 can be fixed with screws. The Kovar alloy has a coefficient of thermal expansion that is highly compatible with optical glass. During the operation of the collimator, if the ambient temperature fluctuates (such as the heat generated by the laser equipment during operation or the temperature difference between day and night in outdoor applications), the amount of thermal deformation of the base 110 and the rotating operating component 120 can be consistent with that of the collimating lens, optical fiber and other optical components installed on the base 110. This can effectively avoid stress concentration caused by the difference in thermal expansion and contraction of different materials, prevent misalignment of optical components and loosening of the bracket, thereby ensuring the optical axis accuracy of the collimator 100 and reducing optical signal loss.

[0037] Furthermore, the base 110 and the rotating operating component 120 can also be integrally formed. The integral forming directly eliminates the assembly and connection link between the base 110 and the rotating operating component 120, and avoids the rotational play caused by the fit gap when the parts are connected separately. This ensures the coaxiality accuracy of the rotating operating component 120 when it rotates, and makes the optical path adjustment of the collimation device more precise and stable.

[0038] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A collimating device, characterized in that include: The system comprises a collimator, a first bracket, a second bracket, and a base plate. The base plate has a mounting groove, and the collimator is partially housed within the mounting groove. The first bracket and the second bracket are both disposed on the base plate and are located on opposite sides of the mounting groove. The first bracket near the collimator and the second bracket near the collimator each have a stepped structure that extends into the mounting groove to clamp and hold the collimator.

2. The collimation device according to claim 1, characterized in that, The collimator includes a base, a rotation operating component, and a collimation matrix lens. The base is disposed in the mounting groove and connected to the first bracket and the second bracket respectively. The collimation matrix lens is disposed at the bottom of the base, and the rotation operating component is disposed at the top of the base for driving the base to rotate relative to the substrate.

3. The collimation device according to claim 2, characterized in that, The base is square, and the mounting groove is a square groove.

4. The collimation device according to claim 2, characterized in that, There are gaps between the two sides of the base and the two sides of the mounting groove.

5. The collimation device according to claim 4, characterized in that, An adhesive layer is provided in the gap to bond the collimator to the wall of the mounting groove.

6. The collimation device according to claim 4, characterized in that, Solder is provided in the gap for welding the collimator to the wall of the mounting groove.

7. The collimation device according to claim 1, characterized in that, Both the first bracket and the second bracket are connected to the substrate by screws.

8. The collimation device according to claim 1, characterized in that, Both the first bracket and the second bracket are made of stainless steel.

9. The collimation device according to claim 1, characterized in that, The substrate is made of stainless steel.

10. The collimation device according to claim 2, characterized in that, Both the base and the rotating operating component are made of Kovar alloy.

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