Miniature polarization splitting prism structure

Abstract

The utility model belongs to the technical field of polarization splitting prisms, and particularly relates to a miniature polarization splitting prism structure which comprises a first lens body, a second lens body and a bottom plate, a fixing frame is fixedly installed at the position, close to the left side, of the upper end of the bottom plate, and a first fixing block and a second fixing block which are used for clamping the first lens body are arranged in the fixing frame. A U-shaped fixing plate is arranged at the position, close to the right side, of the upper end of the bottom plate in a sliding mode, and a first clamping block and a second clamping block which are used for clamping a second mirror body are arranged in the U-shaped fixing plate. The first mirror body is clamped and fixed through the first fixing block and the second fixing block, and the second mirror body is clamped and fixed through the first clamping block and the second clamping block; and then the moving plate slides on the two limiting rods by rotating the translation screw rod, so that the U-shaped fixing plate drives the lens body II to translate to be attached to the lens body I for gluing to form the miniature polarization splitting prism, and the device is convenient for attaching the two lens bodies, and can prevent the phenomenon that the two lens bodies are prone to dislocation during attachment to cause attachment failure.

Description

Technical Field

[0001] The utility model relates to a polarization beam splitting prism, in particular to a structure of a micro polarization beam splitting prism. Background Art

[0002] A polarization beam splitting prism is an optical element used to separate the horizontal polarization and vertical polarization of light. The polarization beam splitting prism is composed of two parts, a high-precision right-angle prism and a polarization beam splitting dielectric film, which are generally processed and formed separately, and then the two formed mirror bodies are glued together.

[0003] In the existing structure of the micro polarization beam splitting prism, since the two mirror bodies of the micro polarization beam splitting prism are small in volume, it is not convenient to fit the two mirror bodies together, and it is easy to be misaligned during fitting, resulting in fitting failure. Summary of the Utility Model

[0004] The main purpose of the present disclosure is to provide a structure of a micro polarization beam splitting prism to effectively solve the problems raised by the inventor in the above background art.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] A structure of a micro polarization beam splitting prism, including a first mirror body, a second mirror body and a bottom plate. A fixing frame is fixedly installed near the left side at the upper end of the bottom plate. A first fixing block and a second fixing block for clamping the first mirror body are arranged in the fixing frame. The first mirror body is arranged between the first fixing block and the second fixing block. A U-shaped fixing plate is slidably arranged near the right side at the upper end of the bottom plate. A first clamping block and a second clamping block for clamping the second mirror body are arranged in the U-shaped fixing plate. The second mirror body is arranged between the first clamping block and the second clamping block.

[0007] Preferably, the first fixing block is fixedly installed on the inner side of the rear part of the fixing frame through a connecting rod. A first fixing screw is threadedly installed on the front side of the fixing frame. The first fixing screw penetrates through the fixing frame. The second fixing block is rotatably installed on the first fixing screw, and a plurality of first sliding rods are fixedly installed on the second fixing block. All the plurality of first sliding rods penetrate through the fixing frame and are slidably connected with it. A first turning knob is fixedly installed on the first fixing screw. Rubber pads are fixedly installed on the mutually approaching sides of the first fixing block and the second fixing block. The mutually approaching sides of the two rubber pads are in contact with the first mirror body. By rotating the first fixing screw through the first turning knob, the first fixing block can be moved. At the same time, the plurality of first sliding rods will be driven to slide on the fixing frame to make the first fixing block move smoothly. Moving the first fixing block to be in contact with the first mirror body can clamp and fix the first mirror body between the first fixing block and the second fixing block to prevent displacement during fitting.

[0008] Preferably, the first clamping block is fixedly installed on the inner side of the rear part of the U-shaped fixing plate. The second fixing screw is threadedly installed on the front side of the U-shaped fixing plate. The second fixing screw penetrates through the U-shaped fixing plate. The second clamping block is rotatably installed on the second fixing screw. Two second sliding rods are fixedly installed on the second clamping block. The two second sliding rods penetrate through the U-shaped fixing plate and are slidably connected to it. A second turning knob is fixedly installed on the second fixing screw. Rubber pads are fixedly installed on the mutually approaching sides of the first clamping block and the second clamping block. The mutually approaching sides of the two rubber pads are in contact with the second lens body. By rotating the second fixing screw with the second turning knob, the second clamping block can be moved. At the same time, the two second sliding rods will slide on the U-shaped fixing plate to make the second clamping block move smoothly. When the second clamping block is in contact with the second lens body, the second lens body can be clamped and fixed between the first clamping block and the second clamping block, preventing the displacement and misalignment of the second lens body during fitting, which may lead to fitting failure.

[0009] Preferably, a first positioning plate is fixedly installed near the left side of the upper end of the bottom plate. A rubber pad is fixedly installed on the right side of the first positioning plate. The rubber pad is in contact with the first lens body. A second positioning plate is fixedly installed on the upper end of the U-shaped fixing plate. The second positioning plate is L-shaped. A rubber pad is fixedly installed at the lower end of the top of the second positioning plate. The rubber pad is in contact with the second lens body. Through the first positioning plate and the second positioning plate, the first lens body and the second lens body can be positioned during fixation, preventing the wrong position of the lens body during fixation.

[0010] Preferably, a translation screw is rotatably installed inside the right side of the bottom plate, and two limiting rods are fixedly installed. An opening is provided near the right side of the upper end of the bottom plate. A moving plate is threadedly installed on the translation screw, and the moving plate is slidably connected to the two limiting rods. The U-shaped fixing plate is fixedly installed on the moving plate. By rotating the translation screw, the moving plate can slide on the two limiting rods, so that the U-shaped fixing plate can drive the second lens body to move left and right smoothly for stable moving and fitting use.

[0011] Preferably, a handwheel is rotatably installed on the right side of the bottom plate. One end of the handwheel is fixedly connected to the rotating shaft of the translation screw, which is convenient to rotate the translation screw for use.

[0012] In view of this, compared with the prior art, the beneficial effects of the present invention are:

[0013] In this application, through the provided fixing frame and U-shaped fixing plate, the first lens body is fixedly clamped by the first fixing block and the second fixing block in the fixing frame, and then the second lens body is fixedly clamped by the first clamping block and the second clamping block in the U-shaped fixing plate. Then, the second lens body is smoothly moved to the first lens body and the two are fitted, so that accurate gluing can be carried out, preventing misalignment during the fitting of the two lens bodies, which may lead to fitting failure, and it is more convenient to carry out fitting. Description of the Drawings

[0014] Figure 1The front elevation sectional view of the micro polarizing beam splitting prism structure provided by the present utility model is shown;

[0015] Figure 2 The top view of the micro polarizing beam splitting prism structure provided by the present utility model is shown;

[0016] Figure 3 The side elevation sectional view of the micro polarizing beam splitting prism structure provided by the present utility model is shown.

[0017] Icon: 1. Bottom plate; 2. Fixing frame; 3. First positioning plate; 4. First mirror body; 5. Connecting rod; 6. First fixing block; 7. First fixing screw; 8. Second fixing block; 9. First sliding rod; 10. First turning knob; 11. Rubber pad; 12. Translation screw; 13. Limiting rod; 14. Moving plate; 15. Rocking wheel; 16. U-shaped fixing plate; 17. Second positioning plate; 18. Second mirror body; 19. First clamping block; 20. Second fixing screw; 21. Second clamping block; 22. Second sliding rod; 23. Second turning knob. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-3 , the present utility model provides the following embodiments:

[0020] A micro polarizing beam splitting prism structure, including a first mirror body 4, a second mirror body 18 and a bottom plate 1. A fixing frame 2 is fixedly installed near the left side of the upper end of the bottom plate 1. A first fixing block 6 and a second fixing block 8 for clamping the first mirror body 4 are arranged in the fixing frame 2. The first mirror body 4 is arranged between the first fixing block 6 and the second fixing block 8. A U-shaped fixing plate 16 is slidably arranged near the right side of the upper end of the bottom plate 1. A first clamping block 19 and a second clamping block 21 for clamping the second mirror body 18 are arranged in the U-shaped fixing plate 16. The second mirror body 18 is arranged between the first clamping block 19 and the second clamping block 21.

[0021] Specifically, the first fixing block 6 is fixedly installed on the inner side of the rear part of the fixing frame 2 through the connecting rod 5. The first fixing screw 7 is threadedly installed on the front side of the fixing frame 2. The first fixing screw 7 penetrates through the fixing frame 2. The second fixing block 8 is rotatably installed on the first fixing screw 7, and a number of first sliding rods 9 are fixedly installed on the second fixing block 8. The number of first sliding rods 9 all penetrate through the fixing frame 2 and are slidably connected thereto. A first turning knob 10 is fixedly installed on the first fixing screw 7. Rubber pads 11 are fixedly installed on both sides of the first fixing block 6 and the second fixing block 8 that are close to each other. The rubber pads 11 on both sides that are close to each other are in contact with the first mirror body 4. By rotating the first fixing screw 7 with the first turning knob 10, the first fixing block 6 can be moved. At the same time, the number of first sliding rods 9 will be driven to slide on the fixing frame 2 to make the first fixing block 6 move smoothly. Move the first fixing block 6 to be in contact with the first mirror body 4, and the first mirror body 4 can be clamped and fixed between the first fixing block 6 and the second fixing block 8 to prevent displacement during fitting.

[0022] Specifically, the first clamping block 19 is fixedly installed on the inner side of the rear part of the U-shaped fixing plate 16. The second fixing screw 20 is threadedly installed on the front side of the U-shaped fixing plate 16. The second fixing screw 20 penetrates through the U-shaped fixing plate 16. The second clamping block 21 is rotatably installed on the second fixing screw 20, and two second sliding rods 22 are fixedly installed on the second clamping block 21. The two second sliding rods 22 penetrate through the U-shaped fixing plate 16 and are slidably connected thereto. A second turning knob 23 is fixedly installed on the second fixing screw 20. Rubber pads 11 are fixedly installed on both sides of the first clamping block 19 and the second clamping block 21 that are close to each other. The rubber pads 11 on both sides that are close to each other are in contact with the second mirror body 18. By rotating the second fixing screw 20 with the second turning knob 23, the second clamping block 21 can be moved. At the same time, the two second sliding rods 22 will slide on the U-shaped fixing plate 16 to make the second clamping block 21 move smoothly. Move the second clamping block 21 to be in contact with the second mirror body 18, and the second mirror body 18 can be clamped and fixed between the first clamping block 19 and the second clamping block 21 to prevent the second mirror body 18 from being displaced and misaligned during fitting, resulting in fitting failure.

[0023] Specifically, the first positioning plate 3 is fixedly installed near the left side of the upper end of the bottom plate 1. The rubber pad 11 is fixedly installed on the right side of the first positioning plate 3. The rubber pad 11 is in contact with the first mirror body 4. The second positioning plate 17 is fixedly installed at the upper end of the U-shaped fixing plate 16. The second positioning plate 17 is arranged in an L shape, and the rubber pad 11 is fixedly installed at the lower end of the top of the second positioning plate 17. The rubber pad 11 is in contact with the second mirror body 18. The first mirror body 4 and the second mirror body 18 can be positioned during fixation through the first positioning plate 3 and the second positioning plate 17 to prevent the mirrors from being fixed in the wrong position.

[0024] Specifically, a translation screw 12 is rotatably installed inside the bottom plate 1 near the right side, and two limiting rods 13 are fixedly installed. An opening is formed at the upper end of the bottom plate 1 near the right side. A moving plate 14 is threadedly installed on the translation screw 12, and the moving plate 14 is slidably connected to the two limiting rods 13. A U-shaped fixing plate 16 is fixedly installed on the moving plate 14. By rotating the translation screw 12, the moving plate 14 can slide on the two limiting rods 13, so that the U-shaped fixing plate 16 can drive the second mirror body 18 to translate left and right for stable moving and fitting use.

[0025] Specifically, a handwheel 15 is rotatably installed on the right side of the bottom plate 1. One end of the handwheel 15 is fixedly connected to the rotating shaft of the translation screw 12, which facilitates the rotation of the translation screw 12 for use through the handwheel 15.

[0026] The working principle of this utility model is as follows: First, place the first mirror body 4 between the first fixing block 6 and the second fixing block 8 and make the left side contact with the first positioning plate 3. Then, rotate the first fixing screw 7 through the first knob 10 to move the first fixing block 6. At the same time, several first sliding rods 9 will slide on the fixing frame 2 to make the first fixing block 6 move smoothly. Move the first fixing block 6 towards the first mirror body 4 to clamp and fix it between the first fixing block 6 and the second fixing block 8. Then, place the second mirror body 18 between the first clamping block 19 and the second clamping block 21 and make the top contact with the second positioning plate 17. Then, rotate the second fixing screw 20 through the second knob 23 to move the second clamping block 21. At the same time, the two second sliding rods 22 will slide on the U-shaped fixing plate 16 to make the second clamping block 21 move smoothly. Move the second clamping block 21 towards the second mirror body 18 to clamp and fix it between the first clamping block 19 and the second clamping block 21. After the first mirror body 4 and the second mirror body 18 are fixed, place the colloid on the inclined surfaces of the first mirror body 4 and the second mirror body 18. Then, rotate the translation screw 12 through the handwheel 15 to make the moving plate 14 move leftward on the two limiting rods 13, so that the U-shaped fixing plate 16 drives the second mirror body 18 to translate towards the first mirror body 4. When the first mirror body 4 and the second mirror body 18 are fitted together, the gluing to form a micro star polarization beam splitter prism can be completed.

[0027] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0028] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A micro polarization beam splitter prism structure, comprising a mirror body 1 (4), a mirror body 2 (18) and a bottom plate (1), characterized in that: A fixing frame (2) is fixedly mounted near the left side of the upper end of the bottom plate (1), and a fixing block (6) and a fixing block (8) for clamping the mirror body (4) are arranged inside the fixing frame (2), and the mirror body (4) is arranged between the fixing block (6) and the fixing block (8). A U-shaped fixing plate (16) is slidably arranged near the right side of the upper end of the bottom plate (1), and a clamping block (19) and a clamping block (21) for clamping the mirror body (18) are arranged inside the U-shaped fixing plate (16), and the mirror body (18) is arranged between the clamping block (19) and the clamping block (21).

2. The micro polarization beam splitter prism structure according to claim 1, characterized in that: The fixing block 1 (6) is fixedly mounted on the inner side of the rear part of the fixing frame (2) through a connecting rod (5); a fixing screw 1 (7) is threadedly mounted on the front side of the fixing frame (2); the fixing screw 1 (7) penetrates the fixing frame (2); the fixing block 2 (8) is rotatably mounted on the fixing screw 1 (7); and a plurality of sliding rods 1 (9) are fixedly mounted on the fixing block 2 (8); the plurality of sliding rods 1 (9) penetrate the fixing frame (2) and are slidably connected thereto; a twist rod 1 (10) is fixedly mounted on the fixing screw 1 (7); a rubber pad (11) is fixedly mounted on one side of the fixing block 1 (6) and the fixing block 2 (8) close to each other; and the two rubber pads (11) are in contact with the mirror body 1 (4) on one side close to each other.

3. The micro polarization beam splitter prism structure according to claim 1, characterized in that: The clamp block 1 (19) is fixedly mounted on the inner side of the rear part of the U-shaped fixing plate (16); a fixing screw rod 2 (20) is threadedly mounted on the front side of the U-shaped fixing plate (16); the fixing screw rod 2 (20) penetrates the U-shaped fixing plate (16); the clamp block 2 (21) is rotatably mounted on the fixing screw rod 2 (20); and two sliding rods 2 (22) are fixedly mounted on the clamp block 2 (21); the two sliding rods 2 (22) penetrate the U-shaped fixing plate (16) and are slidably connected thereto; a twist rod 2 (23) is fixedly mounted on the fixing screw rod 2 (20); a rubber pad (11) is fixedly mounted on one side of the clamp block 1 (19) and the clamp block 2 (21) close to each other; and the two rubber pads (11) are in contact with the mirror body 2 (18) on one side close to each other.

4. The micro polarization beam splitter prism structure according to claim 1, characterized in that: A positioning plate 1 (3) is fixedly mounted near the left side of the upper end of the bottom plate (1), a rubber pad (11) is fixedly mounted on the right side of the positioning plate 1 (3), and the rubber pad (11) contacts the mirror body 1 (4); a positioning plate 2 (17) is fixedly mounted on the upper end of the U-shaped fixing plate (16), and the positioning plate 2 (17) is arranged in an L shape, and a rubber pad (11) is fixedly mounted on the lower end of the top of the positioning plate 2 (17), and the rubber pad (11) contacts the mirror body 2 (18).

5. The micro polarization beam splitter prism structure according to claim 1, characterized in that: The bottom plate (1) is rotatably mounted with a translation screw rod (12) near the right side, and two limit rods (13) are fixedly mounted. An opening is provided at the upper end of the bottom plate (1) near the right side. A movable plate (14) is threadedly mounted on the translation screw rod (12), and the movable plate (14) is slidably connected to the two limit rods (13). The U-shaped fixed plate (16) is fixedly mounted on the movable plate (14).

6. The micro polarization beam splitter prism structure according to claim 5, characterized in that: A rocking wheel (15) is rotatably mounted on the right side of the base plate (1), and one end of the rocking wheel (15) is fixedly connected to the rotating shaft of the translation screw rod (12).

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