A spatial light modulator
By introducing a U-shaped block and a worm gear transmission mechanism into the spatial light modulator, the problem of pitch angle mismatch of the optical valve surface was solved, achieving precise guidance and positional stability of the light, and reducing the difficulty and time cost of optical path construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN GUANGGE TECHNOLOGY CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-06-05
AI Technical Summary
When existing spatial light modulators are fixedly installed with optical valves, the pitch angle of the optical valve surface does not match the experimental requirements, which increases the difficulty and time cost of optical path construction, and makes it difficult to quickly and accurately guide the light to the receiving position of subsequent optical components.
A spatial light modulator was designed. By setting a U-shaped block and a screw in the recess of the base component, combined with a worm gear transmission mechanism, the precise angle and position adjustment of the flip cover component can be achieved. The threaded connection and the self-locking property of the worm gear ensure accurate guidance of the light direction.
It enables precise guidance of light, reduces the difficulty and time cost of optical path construction, improves adjustment efficiency and positional stability, and simplifies the installation process of optical components.
Smart Images
Figure CN224328302U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optoelectronic device technology, specifically to a spatial light modulator. Background Technology
[0002] A spatial light modulator is a device that can dynamically modulate the spatial distribution of light waves. It converts input optical or electrical signals into real-time changes in the characteristics of the light field, thereby enabling flexible manipulation of the light wavefront. This modulation is usually performed independently at the pixel level, making it a key device for dynamically controlling the light field distribution and realizing complex light field transformations in fields such as optical information processing, holographic imaging, laser processing, optical communication, and adaptive optics.
[0003] When using a spatial light modulator, due to inherent errors in the fixed installation of the light valve, the pitch angle of the light valve surface may not match the experimental requirements. In this case, it is necessary to continuously adjust the support rod to meet the operating angle of the liquid crystal light valve.
[0004] Chinese patent CN214751204U discloses a spatial light modulator that enables a flip cover assembly to flip within the range of 0 to 180°, thereby achieving adjustment of optical devices. The spatial light modulator locks the flip cover assembly when it is flipped to a certain angle by setting a locking component between the flip cover assembly and the base assembly. That is, the flip cover assembly can be stably stopped without external force when rotated to 0°, 90°, and 180°.
[0005] While the aforementioned patents can adjust the angle of optical devices, adjusting the angle of optical devices will change the incident angle of incident light, causing the direction of reflected or transmitted light to deviate. Furthermore, the aforementioned patents are not convenient for adjusting the position of optical devices, making it difficult to quickly and accurately guide light to the receiving position of subsequent optical elements, which increases the difficulty and time cost of optical path construction. Utility Model Content
[0006] This invention addresses the technical problems existing in the prior art by providing a spatial light modulator.
[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0008] A spatial light modulator includes a substrate assembly and a flip cover assembly. The substrate assembly has a recessed platform on its surface, and a U-shaped block is disposed inside the recessed platform. The flip cover assembly is rotatably mounted inside the U-shaped block via a pivot. An angle adjustment mechanism is provided between the flip cover assembly and the U-shaped block for precise adjustment of the angle of the flip cover assembly. A screw is rotatably mounted inside the recessed platform, and the U-shaped block is threaded onto the outside of the screw.
[0009] The beneficial effects of this utility model are: by turning the screw, the U-shaped block can be moved horizontally under the action of the threaded connection, thereby adjusting the position of the flip cover assembly. Moreover, the threaded drive not only has self-locking properties, which can ensure the stability of the flip cover assembly position, but also has high position adjustment accuracy, which can compensate for the deviation of the light direction, so that the light can be accurately guided to the receiving position of the subsequent optical element, reducing the difficulty and time cost of optical path construction.
[0010] Furthermore, the angle adjustment mechanism includes a first groove formed at the bottom of the flip cover assembly, with a rotating shaft passing through the interior of the first groove. A worm gear is mounted on the surface of the rotating shaft within the first groove. A second groove is formed on the surface of the U-shaped block, and a worm is disposed inside the second groove, meshing with the worm gear.
[0011] Furthermore, a drive shaft is rotatably mounted inside the recessed platform, and the drive shaft slides through the interior of the second groove, with a worm gear sleeved on the surface of the drive shaft. A keyway is provided on the outer surface of the drive shaft along its length, and a key block is provided on the inner wall of the worm gear, with the key block slidably disposed within the keyway.
[0012] Furthermore, the outer surface of the base component is connected to a ribbon cable, the end of which is connected to the flip cover component.
[0013] Furthermore, the surface of the base component is provided with distance scales along the length of the screw, and the outer surface of the U-shaped block is provided with a first pointer corresponding to the distance scales.
[0014] Furthermore, the outer surface of the U-shaped block is provided with an angle scale, and the end of the rotating shaft extends through to the outside of the U-shaped block and is equipped with a second pointer, which corresponds to the angle scale.
[0015] Furthermore, the ends of both the screw and the drive shaft extend to the outside of the base assembly and are fitted with knobs, the outer surface of which is provided with anti-slip texture. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 for Figure 1 Enlarged diagram of A in the middle;
[0018] Figure 3 This is a schematic diagram of the structure of the base component in this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the U-shaped block and the flip-top assembly in this utility model;
[0020] Figure 5 This is a partial structural diagram of the flip-top assembly in this utility model.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1. Base assembly; 101. Recessed platform; 102. U-shaped block; 103. Rotating shaft; 104. Screw; 2. Flip cover assembly; 3. Angle adjustment mechanism; 301. First groove; 302. Worm gear; 303. Second groove; 304. Worm; 4. Drive shaft; 401. Keyway; 402. Key block; 5. Distance scale; 501. First pointer; 502. Angle scale; 503. Second pointer; 6. Ribbon cable; 7. Knob. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.
[0026] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" other elements or features would be oriented "over" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.
[0027] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.
[0028] Example 1
[0029] Figure 1 A spatial light modulator structure diagram provided for an embodiment of this utility model. Figure 3 This is a schematic diagram of the structure of the base component in this utility model. Figure 1 , Figure 3 As shown, the device includes a base assembly 1 and a flip cover assembly 2. The surface of the base assembly 1 has a recess 101, and a U-shaped block 102 is disposed inside the recess 101. The flip cover assembly 2 is rotatably mounted inside the U-shaped block 102 via a rotating shaft 103. An angle adjustment mechanism 3 is provided between the flip cover assembly 2 and the U-shaped block 102 for precise adjustment of the angle of the flip cover assembly 2. A screw 104 is rotatably mounted inside the recess 101, and the U-shaped block 102 is threaded onto the outside of the screw 104.
[0030] In use, the angle of the flip cover assembly 2 is adjusted by the angle adjustment mechanism 3. Since the adjustment of the angle of the flip cover assembly 2 will change the incident angle of the incident light, the direction of the reflected light or transmitted light will be deflected. At this time, the screw 104 can be turned, and the U-shaped block 102 can be moved horizontally under the action of the threaded connection, thereby adjusting the position of the flip cover assembly 2. Moreover, the threaded drive not only has self-locking property, which can ensure the stability of the position of the flip cover assembly 2, but also has high position adjustment accuracy, which is used to compensate for the deviation of the light direction, so that the light can be accurately guided to the receiving position of the subsequent optical element, reducing the difficulty and time cost of optical path construction.
[0031] Figure 2 for Figure 1 An enlarged diagram of A in the diagram. Figure 4 This is a structural schematic diagram of the U-shaped block and flip-top assembly in this utility model. Figure 2 , Figure 4 As shown, the angle adjustment mechanism 3 includes a first groove 301 formed at the bottom of the flip cover assembly 2, and a rotating shaft 103 passing through the interior of the first groove 301. A worm gear 302 is mounted on the surface of the rotating shaft 103 within the first groove 301. A second groove 303 is formed on the surface of the U-shaped block 102, and a worm 304 is disposed inside the second groove 303, meshing with the worm gear 302. A drive shaft 4 is rotatably mounted inside the recess 101, and the drive shaft 4 slides through the interior of the second groove 303, with the worm 304 sleeved on the surface of the drive shaft 4. A keyway 401 is provided on the outer surface of the drive shaft 4 along its length direction, and a key block 402 is provided on the inner wall of the worm 304, slidingly disposed within the keyway 401. A ribbon cable 6 is connected to the outer surface of the base assembly 1, and the end of the ribbon cable 6 is connected to the flip cover assembly 2.
[0032] When the angle of the flip cover assembly 2 needs to be adjusted, the drive shaft 4 can be turned. Through the keyway 401 and key block 402, the angle of the worm 304 can be locked, allowing the worm 304 to rotate with the drive shaft 4. When the worm 304 rotates, since the worm 304 meshes with the worm wheel 302, it can drive the worm wheel 302 to rotate, and drive the flip cover assembly 2 to rotate through the rotating shaft 103, thus achieving the purpose of angle adjustment. Moreover, due to the transmission cooperation between the worm 304 and the worm wheel 302, it not only has self-locking properties, which can lock the angle of the flip cover assembly 2, but also has a large transmission ratio. When the drive shaft 4 is turned to rotate one revolution, the worm wheel 302 will rotate a certain angle, thus achieving the purpose of precise adjustment of the angle of the flip cover assembly 2 with high adjustment efficiency.
[0033] Furthermore, since the worm gear 302 can slide on the surface of the drive shaft 4, it can drive the worm 304 to move accordingly when the U-shaped block 102 moves horizontally, ensuring that the worm 304 and the worm gear 302 are always meshed. This prevents position adjustment and angle adjustment from interfering with each other, making operation simple and convenient. In addition, the drive shaft 4 can also limit the movement of the U-shaped block 102, ensuring the smoothness of the horizontal movement of the U-shaped block 102, achieving two benefits in one.
[0034] Since the base assembly 1 and the flip cover assembly 2 are connected by the ribbon cable 6, the position of the flip cover assembly 2 can be adapted to changes, ensuring the supply of power and signal transmission.
[0035] Example 2
[0036] Based on Embodiment 1, the present invention can be further improved as follows. For example... Figure 1 As shown, the ends of the screw 104 and the drive shaft 4 both extend to the outside of the base assembly 1 and are equipped with knobs 7. The outer surface of the knobs 7 is provided with anti-slip texture.
[0037] By turning the two knobs 7, it is easy to rotate the screw 104 and the drive shaft 4. In addition, the anti-slip texture increases the friction between the hand and reduces the chance of slipping.
[0038] Example 3
[0039] Based on the above embodiments, the present invention can be further improved as follows, such as... Figure 2 As shown, the surface of the base assembly 1 is provided with a distance scale 5 along the length direction of the screw 104, and the outer surface of the U-shaped block 102 is provided with a first pointer 501 corresponding to the distance scale 5. The outer surface of the U-shaped block 102 is provided with an angle scale 502, and the end of the rotating shaft 103 extends to the outside of the U-shaped block 102 and is equipped with a second pointer 503, which corresponds to the angle scale 502.
[0040] The distance scale 5 and the first pointer 501 provide a reference for precisely adjusting the horizontal movement distance of the flip cover assembly 2. The angle scale 502 and the second pointer 503 provide a reference for precisely adjusting the rotation angle of the flip cover assembly 2.
[0041] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.
Claims
1. A spatial light modulator, characterized in that, include: The base assembly (1) and the flip cover assembly (2) are provided. The surface of the base assembly (1) is provided with a recess (101). A U-shaped block (102) is provided inside the recess (101). The flip cover assembly (2) is rotatably installed inside the U-shaped block (102) via a rotating shaft (103). An angle adjustment mechanism (3) is provided between the flip cover assembly (2) and the U-shaped block (102) for precisely adjusting the angle of the flip cover assembly (2). A screw (104) is rotatably mounted inside the recess (101), and the U-shaped block (102) is threaded onto the outside of the screw (104).
2. A spatial light modulator according to claim 1, characterized in that, The angle adjustment mechanism (3) includes a first groove (301) formed at the bottom of the flip cover assembly (2), and the rotating shaft (103) passes through the interior of the first groove (301). A worm gear (302) is installed on the surface of the rotating shaft (103) located in the first groove (301). The surface of the U-shaped block (102) is provided with a second groove (303), and a worm (304) is provided inside the second groove (303). The worm (304) is meshed with the worm wheel (302).
3. A spatial light modulator according to claim 2, characterized in that, The drive shaft (4) is rotatably mounted inside the recess (101), and the drive shaft (4) slides through the interior of the second groove (303), and the worm (304) is sleeved on the surface of the drive shaft (4); The outer surface of the drive shaft (4) is provided with a keyway (401) along its length direction, and the inner wall of the worm (304) is provided with a key block (402), which is slidably disposed in the keyway (401).
4. A spatial light modulator according to claim 1, characterized in that, The outer surface of the base component (1) is connected to a ribbon cable (6), and the end of the ribbon cable (6) is connected to the flip cover component (2).
5. A spatial light modulator according to claim 1, characterized in that, The surface of the base component (1) is provided with a distance scale (5) along the length direction of the screw (104), and the outer surface of the U-shaped block (102) is provided with a first pointer (501) corresponding to the distance scale (5).
6. A spatial light modulator according to claim 2, characterized in that, The outer surface of the U-shaped block (102) is provided with an angle scale (502), and the end of the rotating shaft (103) extends through to the outside of the U-shaped block (102) and is equipped with a second pointer (503), which corresponds to the angle scale (502).
7. A spatial light modulator according to claim 3, characterized in that, The ends of the screw (104) and the drive shaft (4) extend to the outside of the base assembly (1) and are equipped with knobs (7), the outer surface of which is provided with anti-slip texture.