Alignment device in a laser diode package

Abstract

This utility model discloses an alignment device for laser diode packaging, including a base plate. A guide rail is fixedly mounted on the right side of the base plate, and a slide block is slidably connected to the right side of the guide rail. A fastening bolt is threaded onto the right side of the slide block. A support plate is fixedly mounted on the upper end of the slide block, and a crossbeam is fixedly mounted on the upper end of the support plate. This alignment device for laser diode packaging uses a central parallel lamp and two side parallel lamps in front of the lens to emit parallel light, thereby finding the true focal point and focal length of the lens. Then, through the sliding connection structure of guide rail one and slide block one, and guide rail two and slide block two, the laser positioner can be flexibly moved. The vertical laser line emitted by the laser positioner intersects with the intersection point of the lens refraction illuminated by the central parallel lamp and the two side parallel lamps, facilitating the formation of a clear positioning mark. Operators can intuitively determine the focal point and focal length of the lens, providing a basis for subsequent alignment.

Description

Technical Field

[0001] This utility model relates to the field of diode alignment technology, specifically to an alignment device in laser diode packaging. Background Technology

[0002] In the field of laser diode packaging technology, accurate alignment is crucial. As an important optoelectronic device, the packaging quality of a laser diode directly affects the performance and reliability of the product. During the packaging process, it is not only necessary to accurately fix the laser diode within the packaging structure, but also to ensure its accurate alignment with the optical focus of optical components such as lenses, thereby improving the diode's performance.

[0003] Existing laser diodes make it difficult to observe the optical focus and focal length of the lens during packaging. In actual operation, it is difficult to align the optical focus with the light emission point of the laser chip, which affects the light emission efficiency and beam quality of the laser diode. Therefore, it is necessary to propose an alignment device in the packaging of laser diodes. Utility Model Content

[0004] The purpose of this invention is to provide an alignment device in laser diode packaging to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an alignment device in laser diode packaging, comprising a base plate, a guide rail 1 fixedly mounted on the right side of the base plate, a slide block 1 slidably connected to the right side of the guide rail 1, a fastening bolt threaded onto the right side of the slide block 1, a support plate 1 fixedly mounted on the upper end of the slide block 1, a crossbeam 1 fixedly mounted on the upper end of the support plate 1, a guide rail 2 fixedly mounted on the lower end of the crossbeam 1, a slide block 2 slidably connected to the lower end of the guide rail 2, a laser positioner fixedly mounted on the lower end of the slide block 2, a support plate 2 fixedly mounted on the right side of the base plate, and a support plate 2 fixedly mounted on the left side of the support plate 2. A second crossbeam is fixedly installed. A lamp holder is fixedly installed at the upper end of the second crossbeam. A blue light lamp is fixedly installed at the rear side of the lamp holder. A bracket is fixedly installed at the rear side of the second crossbeam. A universal tube is fixedly installed at the lower end of the bracket. An optical detection lens is fixedly installed at the lower end of the universal tube. A blue light transmittance sheet is provided at the lower end of the optical detection lens. A lens is provided at the upper end of the base plate. A support is fixedly installed at the upper end of the base plate. A center parallel lamp is fixedly installed at the right side of the support. A side parallel lamp is fixedly installed at the right side of the support. A substrate is provided at the upper end of the base plate. A laser chip is fixedly installed at the upper end of the substrate.

[0006] Preferably, the fastening bolt passes through the slide block and abuts against the guide rail, and the crossbeam is perpendicular to the upper end of the support plate.

[0007] Preferably, both the first and second crossbeams are parallel to the base plate, and the blue light is set at an angle.

[0008] Preferably, the laser positioner is located above the base plate and perpendicular to the base plate.

[0009] Preferably, two side parallel lights are fixedly installed on the right side of the support and are located on the upper and lower sides of the central parallel light, respectively.

[0010] Preferably, the lens is located behind the central parallel lamp, and the laser chip is located behind the lens.

[0011] Preferably, the first crossbeam and the second crossbeam are located on the same height line, and the optical detection lens is tilted.

[0012] Step 1: Utilizing the light reversibility of an optical lens, find the true focal point and focal length of the lens using parallel light, define the distance relative to the center of the lens, and mark the position using a laser locator;

[0013] Step 2: Illuminate the laser chip from the side using a blue light lamp, and use an optical detection lens containing a blue light transmittance sheet to determine the fluorescence reaction of the laser chip's light emission point, which serves as the aiming line for the lens focus;

[0014] Step 3: Using the focal point obtained in Step 1 and the fluorescence reaction results in Step 2, couple the lens to the physical position of the laser chip.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The alignment device in this laser diode package emits parallel light through a central parallel lamp and two side parallel lamps in front of the lens, thereby finding the true focal point and focal length of the lens. Then, through the sliding connection structure of guide rail one and slide one, and guide rail two and slide two, the laser positioner can be flexibly moved. The vertical laser line emitted by the laser positioner can intersect with the intersection point of the lens refraction illuminated by the central parallel lamp and the two side parallel lamps, which facilitates the formation of a clear positioning mark. The operator can intuitively determine the focal point and focal length of the lens, providing a basis for subsequent alignment and facilitating the operation process.

[0017] 2. The alignment device in the laser diode package, through a blue light lamp in conjunction with an optical detection lens and a blue light transmittance sheet, can emit blue light to illuminate the laser chip, and use the optical detection lens containing the blue light transmittance sheet to judge the fluorescence reaction of the laser chip's light emission point as the aiming line of the lens focus, thereby facilitating the alignment and coupling of the laser chip's light emission point with the lens focus, thereby improving the light emission efficiency and beam quality of the laser diode. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the first overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the left-side structure of this utility model;

[0021] Figure 4 This is a partially enlarged structural schematic diagram of the present invention.

[0022] The components are as follows: 1. Base plate; 2. Guide rail one; 3. Slide one; 4. Fastening bolt; 5. Support plate one; 6. Crossbeam one; 7. Guide rail two; 8. Slide two; 9. Laser positioner; 10. Support plate two; 11. Crossbeam two; 12. Lamp holder; 13. Blue light lamp; 14. Bracket; 15. Universal tube; 16. Optical inspection lens; 17. Blue light transmittance sheet; 18. Lens; 19. Support; 20. Center parallel lamp; 21. Side parallel lamp; 22. Base plate; 23. Laser chip. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4This utility model provides a technical solution: an alignment device in laser diode packaging, comprising a base plate 1, a guide rail 2 fixedly mounted on the right side of the base plate 1, a slide block 3 slidably connected to the right side of the guide rail 2, a fastening bolt 4 threadedly mounted on the right side of the slide block 3, a support plate 5 fixedly mounted on the upper end of the slide block 3, a crossbeam 6 fixedly mounted on the upper end of the support plate 5, a guide rail 7 fixedly mounted on the lower end of the crossbeam 6, and a slide block 8 slidably connected to the lower end of the guide rail 7. A laser locator 9 is fixedly installed at the lower end of the base plate 1. A support plate 2 10 is fixedly installed on the right side of the base plate 1. A crossbeam 2 11 is fixedly installed on the left side of the support plate 2 10. A lamp holder 12 is fixedly installed at the upper end of the crossbeam 2 11. A blue light lamp 13 is fixedly installed at the rear side of the lamp holder 12. A bracket 14 is fixedly installed at the rear side of the crossbeam 2 11. A universal tube 15 is fixedly installed at the lower end of the bracket 14. An optical inspection lens 16 is fixedly installed at the lower end of the universal tube 15. The lower end of the optical inspection lens 16 is equipped with... A blue light-transmitting sheet 17 is placed on the base plate 1, and a lens 18 is set on the upper end of the base plate 1. A support 19 is fixedly installed on the upper end of the base plate 1. A central parallel light 20 is fixedly installed on the right side of the support 19, and a side parallel light 21 is fixedly installed on the right side of the support 19. Parallel light can be emitted through the central parallel light 20 and the two side parallel lights 21 in front of the lens 18, thereby finding the true focal point and focal length of the lens 18. Then, through the sliding connection structure of guide rail 1 2 and slide 1 3, and guide rail 2 7 and slide 2 8, the laser positioner 9 can be flexibly moved. The vertical laser line emitted by the laser positioner 9 can intersect with the intersection point of the central parallel light 20 and the two side parallel lights 21 illuminating the lens 18, which is convenient for forming a clear positioning mark. The operator can intuitively determine the focal point and focal length of the lens 18, providing a basis for subsequent alignment and facilitating the operation process. A substrate 22 is set on the upper end of the base plate 1, and a laser chip 23 is fixedly installed on the upper end of the substrate 22.

[0025] Please see Figure 2-4In this embodiment, the fastening bolt 4 passes through the slide block 3 and abuts against the guide rail 2. The crossbeam 6 is perpendicular to the upper end of the support plate 5, which facilitates adjustment and fixation. Both the crossbeam 6 and the second crossbeam 11 are parallel to the base plate 1. The blue light lamp 13 is tilted, which can emit blue light to illuminate the laser chip 23. The fluorescence reaction of the light emission point of the laser chip 23 is judged by the optical detection lens 16 containing the blue light transmittance plate 17, which serves as the aiming line of the focal point of the lens 18. The laser positioner 9 is located above the base plate 1 and is perpendicular to the base plate 1. The vertical laser line emitted by the laser positioner 9 can be parallel to the center. The intersection of the illumination points of lamp 20 and two side parallel lamps 21 illuminating the lens 18 facilitates the formation of a clear positioning mark. Two side parallel lamps 21 are fixedly installed on the right side of the support 19 and are located above and below the central parallel lamp 20 respectively. They can emit parallel light to find the true focal point and focal length of the lens 18. The lens 18 is located behind the central parallel lamp 20 for easy alignment. The laser chip 23 is located behind the lens 18. The first crossbeam 6 and the second crossbeam 11 are both located on the same height line. The optical detection lens 16 is tilted to facilitate observation of the fluorescence reaction of the light emission point of the laser chip 23.

[0026] Working principle: First, parallel light is emitted by the central parallel lamp 20 and two side parallel lamps 21 in front of lens 18, thus finding the true focal point and focal length of lens 18. Then, through the sliding connection structure of guide rail 1 2 and slide 1 3, and guide rail 2 7 and slide 2 8, the laser positioner 9 can move flexibly. The vertical laser line emitted by the laser positioner 9 intersects with the intersection point of the refraction of the lens 18 by the central parallel lamp 20 and the two side parallel lamps 21, which facilitates the formation of a clear positioning mark. The operator can intuitively determine the focal point and focal length of lens 18, providing a basis for subsequent alignment and facilitating the operation process. The blue light lamp 13, together with the optical detection lens 16 and the blue light transmission plate 17, can emit blue light to illuminate the laser chip 23. The optical detection lens 16 containing the blue light transmission plate 17 judges the fluorescence reaction of the light emission point of the laser chip 23, which serves as the aiming line of the focal point of lens 18. This facilitates the alignment and coupling of the light emission point of laser chip 23 with the focal point of lens 18, thereby improving the light emission efficiency and beam quality of the laser diode.

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An alignment device in a laser diode package comprising a base plate (1), characterized in that: A guide rail 1 (2) is fixedly installed on the right side of the base plate (1). A slide block 1 (3) is slidably connected to the right side of the guide rail 1 (2). A fastening bolt (4) is threaded on the right side of the slide block 1 (3). A support plate 1 (5) is fixedly installed at the upper end of the slide block 1 (3). A crossbeam 1 (6) is fixedly installed at the upper end of the support plate 1 (5). A guide rail 2 (7) is fixedly installed at the lower end of the crossbeam 1 (6). A slide block 2 (8) is slidably connected to the lower end of the guide rail 2 (7). A laser positioner (9) is fixedly installed at the lower end of the slide block 2 (8). A support plate 2 (10) is fixedly installed on the right side of the base plate (1). A crossbeam 2 (11) is fixedly installed on the left side of the support plate 2 (10). A lamp holder (12) is fixedly installed at the upper end of the crossbeam 2 (11). (12) A blue light lamp (13) is fixedly installed on the rear side of the crossbeam (11). A bracket (14) is fixedly installed on the rear side of the crossbeam (14). A universal tube (15) is fixedly installed at the lower end of the bracket (14). An optical detection lens (16) is fixedly installed at the lower end of the universal tube (15). A blue light transmittance sheet (17) is provided at the lower end of the optical detection lens (16). A lens (18) is provided at the upper end of the base plate (1). A support (19) is fixedly installed at the upper end of the base plate (1). A central parallel lamp (20) is fixedly installed on the right side of the support (19). A side parallel lamp (21) is fixedly installed on the right side of the support (19). A substrate (22) is provided at the upper end of the base plate (1). A laser chip (23) is fixedly installed at the upper end of the substrate (22).

2. The alignment device in a laser diode package of claim 1, wherein: The fastening bolt (4) passes through the slide block (3) and abuts against the guide rail (2), and the crossbeam (6) is perpendicular to the upper end of the support plate (5).

3. The alignment device in a laser diode package according to claim 1, characterized in that: Both the first crossbeam (6) and the second crossbeam (11) are parallel to the base plate (1), and the blue light (13) is set at an angle.

4. The alignment device in a laser diode package according to claim 1, characterized in that: The laser locator (9) is located above the base plate (1) and perpendicular to the base plate (1).

5. The alignment device in a laser diode package according to claim 1, characterized in that: Two side parallel lights (21) are fixedly installed on the right side of the support (19) and are located on the upper and lower sides of the central parallel light (20).

6. The alignment device in a laser diode package according to claim 1, characterized in that: The lens (18) is located behind the central parallel lamp (20), and the laser chip (23) is located behind the lens (18).

7. The alignment device in a laser diode package according to claim 1, characterized in that: The first crossbeam (6) and the second crossbeam (11) are both located on the same height line, and the optical detection lens (16) is set at an angle.

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