Observation device for imaging of spatial light modulator

Abstract

The utility model provides an observation device for imaging of a spatial light modulator, and particularly relates to the technical field of optics, the observation device for imaging of the spatial light modulator comprises a reflection unit, a transmission unit, a switching assembly and a camera, the transmission unit comprises a first polaroid, a second polaroid, a first surface light source and a transmission placing platform; the reflection unit comprises a prism, a second surface light source arranged on one side of the prism and a reflection placing platform; a transmission type liquid crystal light valve and a reflection type liquid crystal light valve are fixed to the transmission placing platform and the reflection placing platform respectively, and the switching assembly is used for switching so that the camera can sequentially align to the first polaroid, the transmission placing platform, the second polaroid and the first area light source, or the camera can sequentially align to the prism and the reflection placing platform. According to the utility model, the switching assembly is used for switching different light paths, so that the detection of different types of liquid crystal light valves can be completed, and the superiority of different types of spatial light modulators can be judged.

Description

An observation device for spatial light modulator imaging Technical Field

[0001] This utility model relates to the field of optical technology, and in particular to an observation device for spatial light modulator imaging. Background Technology

[0002] A liquid crystal spatial light modulator is an active digital optical device based on the electro-birefringence effect of liquid crystal molecules. Generally, a liquid crystal spatial light modulator consists of many independent units arranged in a one-dimensional or two-dimensional array in space. Each unit can be independently controlled by a driving voltage and change the orientation structure of the liquid crystal molecules according to this signal, thereby modulating the amplitude or phase of the incident light wave and flexibly changing the wavefront of the incident light wave.

[0003] In the research and development of spatial light modulation, debugging and imaging observation of liquid crystal spatial light modulators and liquid crystal light valves are the most intuitive ways to judge the qualification of spatial light modulator products. However, since different liquid crystal light valves and modulators read out light in different ways, reflective and transmissive spatial modulation light need to be observed separately using different schemes. The experimental space occupies a large area. In addition, different modulators have different sizes of liquid crystal display areas. Small areas have small images and cannot be clearly seen. Furthermore, the external and internal product types are different. Internal products are thicker, while external liquid crystal light valve products are thinner. The thickness of the two is inconsistent, and the height of clear imaging is also different, making the testing of spatial light modulators more complicated and inconvenient. Summary of the Invention

[0004] To address the complexity of detecting different types of spatial light modulators, this invention proposes an observation device for spatial light modulator imaging.

[0005] This utility model is achieved through the following technical solution:

[0006] This invention proposes an observation device for spatial light modulator imaging, comprising a reflection unit, a transmission unit, a switching component, and a camera, wherein:

[0007] The transmission unit includes a first polarizer, a second polarizer, a first surface light source, and a transmission placement platform;

[0008] The reflection unit includes a prism, a second light source disposed on one side of the prism, and a reflection placement platform;

[0009] The transmission placement platform and the reflection placement platform are respectively fixed with a transmission liquid crystal light valve and a reflection liquid crystal light valve. The switching component is used to switch the camera to sequentially face the first polarizer, the transmission placement platform, the second polarizer and the first surface light source, or to sequentially face the prism and the reflection placement platform, and to complete the observation and detection of different spatial light modulators.

[0010] Furthermore, the switching component includes a multi-axis adjustment device composed of a first Y-axis adjustment mechanism, a first X-axis adjustment mechanism, and a first Z-axis adjustment mechanism. The camera is fixed to the top of the multi-axis adjustment device and can be adjusted in multiple axes and aligned with the transmission unit or the reflection unit through the multi-axis adjustment device.

[0011] Furthermore, the transmission unit includes a second Z-axis adjustment mechanism, the first polarizer is fixed to the second Z-axis adjustment mechanism by a bracket, and a magnetic switch is provided at the bottom of the second Z-axis adjustment mechanism.

[0012] Furthermore, the transmissive placement platform includes a transmissive liquid crystal light valve placement stage and a transmissive SLM placement stage, with the transmissive liquid crystal light valve placement stage disposed inside the transmissive SLM placement stage.

[0013] Furthermore, the first surface light source is fixed to the bottom of the transmissive SLM placement stage, and the second polarizer is rotatably disposed at the bottom of the first surface light source and connected to the transmissive SLM placement stage.

[0014] Furthermore, a turntable is provided at the bottom of the prism, which is used to drive the prism to rotate.

[0015] Furthermore, the reflection unit also includes a column disposed at the bottom of the multi-axis adjustment device, a support base disposed at the bottom of the column, a slide rail disposed on the column, the support base being connected to the bottom of the turntable, and the bottom of the turntable being connected to the slide rail.

[0016] Furthermore, the reflective placement platform includes a reflective SLM placement stage and a reflective liquid crystal light valve placement stage, which are sequentially arranged at the bottom of the prism.

[0017] Furthermore, the reflective SLM placement stage includes a base plate and a limiting block, and the reflective SLM placement stage is provided with an oblong hole in the horizontal direction, with the limiting block located inside the oblong hole.

[0018] Furthermore, the reflective liquid crystal light valve placement stage includes a base and an adapter plate, the adapter plate fixing the reflective liquid crystal light valve to the base.

[0019] The beneficial effects of this utility model are:

[0020] (1) The observation device for spatial light modulator imaging proposed in this utility model uses a switching component to switch different optical paths, which can complete the detection of different types of liquid crystal light valves. By using spatial light modulator to image different liquid crystal light valves, the quality of different types of spatial light modulators can be judged, which is more efficient during detection.

[0021] (2) The observation device for spatial light modulator imaging proposed in this utility model uses a reflective liquid crystal light valve placement stage and a transmissive liquid crystal light valve placement stage to fix different types of liquid crystal light valves. At the same time, the types of reflective liquid crystal light valve placement stages and transmissive liquid crystal light valve placement stages can be changed to adapt to liquid crystal light valves of different sizes, which can meet different detection requirements. Attached Figure Description

[0022] Figure 1 is a structural diagram of the observation device for spatial light modulator imaging according to this utility model;

[0023] Figure 2 shows the observation device for imaging the spatial light modulator of this utility model;

[0024] Figure 3 shows the observation device for imaging the spatial light modulator of this utility model;

[0025] In the diagram: Camera 1, First Z-axis adjustment mechanism 2, First X-axis adjustment mechanism 3, First Y-axis adjustment mechanism 4, Magnetic switch 5, Second surface light source 6, Column 7, Slide rail 8, Support base 9, Base 10, Adapter plate 11, Base plate 12, Limiting block 13, Turntable 14, Prism 15, First polarizer 16, Bracket 17, Second Z-axis adjustment mechanism 18, Transmissive liquid crystal light valve placement stage 19, Transmissive SLM placement stage 20, First surface light source 21, Second polarizer 22, Reflective SLM placement stage 23;

[0026] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will provide further details.

[0028] Please refer to Figures 1-3. This utility model proposes an observation device for spatial light modulator imaging, comprising a reflection unit, a transmission unit, a switching component, and a camera 1, wherein:

[0029] The transmission unit includes a first polarizer 16, a second polarizer 22, a first surface light source 21, and a transmission placement platform;

[0030] The reflection unit includes a prism 15, a second light source 6 disposed on one side of the prism 15, and a reflection placement platform;

[0031] A transmissive liquid crystal light valve and a reflective liquid crystal light valve are fixed on the transmissive placement platform and the reflective placement platform, respectively. The switching component is used to switch the camera 1 to sequentially face the first polarizer 16, the transmissive placement platform, the second polarizer 22 and the first surface light source 21, or to sequentially face the prism 15 and the reflective placement platform, and to complete the observation and detection of different spatial light modulators.

[0032] In a specific embodiment, the first polarizer 16, the second polarizer 22, the first surface light source 21, and the transmission placement platform form the detection optical path of the transmission liquid crystal light valve, while the prism 15, the second surface light source 6, and the reflective placement platform form the detection circuit of the reflective liquid crystal light valve. The switching component switches the position of the camera 1 and aligns it with different circuits to complete the detection of the transmission liquid crystal light valve and the reflective liquid crystal light valve respectively, thereby determining the quality of different types of spatial light modulators. This utility model utilizes the switching component to switch different optical paths, enabling the detection of different types of liquid crystal light valves and the determination of the quality of different types of spatial light modulators, resulting in higher efficiency during detection.

[0033] Furthermore, the switching component includes a multi-axis adjustment device composed of a first Y-axis adjustment mechanism 4, a first X-axis adjustment mechanism 3, and a first Z-axis adjustment mechanism 2. The camera 1 is fixed to the top of the multi-axis adjustment device and can be adjusted in multiple axes and aligned with the transmission unit or the reflection unit through the multi-axis adjustment device.

[0034] In a specific embodiment, the multi-axis adjustment device can perform X, Y, and Z axis adjustments. The camera 1 is fixed on the top of the multi-axis adjustment device. The position of the camera 1 can be adjusted by the multi-axis adjustment device to align with the transmission unit or the reflection unit to complete the observation of the reflective liquid crystal light valve and the transmission liquid crystal light valve.

[0035] Furthermore, the transmission unit includes a second Z-axis adjustment mechanism 18, and the first polarizer 16 is fixed to the second Z-axis adjustment mechanism 18 by a bracket 17. A magnetic switch 5 is provided at the bottom of the second Z-axis adjustment mechanism 18.

[0036] In a specific embodiment, the second Z-axis adjustment mechanism 18 is used to adjust the position of the first polarizer 16. When detecting the transmission liquid crystal light valve, the second Z-axis adjustment mechanism 18 adjusts the height of the first polarizer 16 to adapt to different liquid crystal light valves and liquid crystal SLM products. The magnetic switch 5 at the bottom of the second Z-axis adjustment mechanism 18 can be set at any position in the entire observation device.

[0037] Furthermore, the transmissive placement platform includes a transmissive liquid crystal light valve placement stage 19 and a transmissive SLM placement stage 20, with the transmissive liquid crystal light valve placement stage 19 disposed inside the transmissive SLM placement stage 20.

[0038] In a specific implementation, the transmissive SLM placement stage 20 can be adapted to a transmissive SLM, and the transmissive liquid crystal light valve placement stage 19 can be replaced and adapted to different transmissive liquid crystal light valves.

[0039] Furthermore, the first light source 21 is fixed to the bottom of the transmissive SLM stage 20, and the second polarizer 22 is rotatably disposed at the bottom of the first light source 21 and connected to the transmissive SLM stage 20.

[0040] In a specific embodiment, the detection light emitted by the first light source 21 passes sequentially through the second polarizer 22, the transmissive SLM product and the transmissive liquid crystal light valve, and the first polarizer 16 before being received by the camera 1 to complete the detection and observation. The second polarizer 22 is fixed by the thread at the bottom of the transmissive SLM placement stage 20, and the first light source 21 is set below the polarizer.

[0041] Furthermore, a turntable 14 is provided at the bottom of the prism 15, which is used to drive the prism 15 to rotate.

[0042] In a specific implementation, the turntable 14 at the bottom of the prism 15 can rotate the prism 15 at different angles, such as ±45°, which can ensure clear imaging when the reflective SLM product remains stationary.

[0043] Furthermore, the reflection unit also includes a column 7 located at the bottom of the multi-axis adjustment device. A support base 9 is provided at the bottom of the column 7, and a slide rail 8 is provided on the column 7. The support base 9 is connected to the bottom of the turntable 14, and the bottom of the turntable 14 is connected to the slide rail 8.

[0044] In a specific embodiment, the support base 9 supports the bottom, the column 7 is provided with a slide rail 8, the prism 15 is set on the turntable 14, and the bottom of the turntable 14 is connected to the slide rail 8 through a connector. The slide rail 8 drives the prism 15 to move up and down to adjust the position of the prism 15.

[0045] Furthermore, the reflective placement platform includes a reflective SLM placement stage 23 and a reflective liquid crystal light valve placement stage, which are sequentially arranged at the bottom of the prism 15.

[0046] In a specific implementation, the reflective SLM placement stage 23 and the reflective liquid crystal light valve placement stage are used to fix reflective SLM products of arbitrary size and different types of reflective liquid crystal light valves, respectively.

[0047] Furthermore, the reflective SLM placement stage 23 includes a base plate 12 and a limiting block 13. The reflective SLM placement stage 23 has a waist-shaped hole in the horizontal direction, and the limiting block 13 is located in the waist-shaped hole.

[0048] In a specific implementation, the limiting block 13 fixes the reflective SLM product with screws and a waist-shaped hole, and the position of the limiting block 13 is adjusted to accommodate reflective SLM products of different sizes.

[0049] Furthermore, the reflective liquid crystal light valve placement stage includes a base 10 and an adapter plate 11, the adapter plate 11 fixing the reflective liquid crystal light valve to the base 10.

[0050] In a specific embodiment, both the base 10 and the adapter plate 11 have magnetic attraction functions. Different types of reflective liquid crystal light valves can be fixed on the adapter plate 11 by threads or magnetic attraction. Different types of liquid crystal light valves can be adapted by replacing different adapter plates 11. When the reflective liquid crystal light valve is tested, the detection light emitted by the second light source 6 is refracted by the prism 15, passes through the reflective liquid crystal light valve, and illuminates the reflective SLM product. The light is then reflected by the reflective SLM product and passes through the reflective liquid crystal light valve again. Finally, the light passes through the prism 15 and is received by the camera 1 to complete the detection and observation.

[0051] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. An observation device for spatial light modulator imaging, characterized in that, The system includes a reflection unit, a transmission unit, a switching assembly, and a camera. The transmission unit comprises a first polarizer, a second polarizer, a first surface light source, and a transmission placement platform. The reflection unit comprises a prism, a second surface light source disposed on one side of the prism, and a reflection placement platform. A transmission-type liquid crystal light valve and a reflection-type liquid crystal light valve are respectively fixed on the transmission placement platform and the reflection placement platform. The switching assembly is used to switch the camera to sequentially align with the first polarizer, the transmission placement platform, the second polarizer, and the first surface light source, or to sequentially align the camera with the prism and the reflection placement platform, thus enabling observation and detection of different spatial light modulators.

2. The observation device for spatial light modulator imaging according to claim 1, characterized in that, The switching component includes a multi-axis adjustment device composed of a first Y-axis adjustment mechanism, a first X-axis adjustment mechanism, and a first Z-axis adjustment mechanism. The camera is fixed to the top of the multi-axis adjustment device and can be adjusted in multiple axes and aligned with the transmission unit or the reflection unit through the multi-axis adjustment device.

3. The observation device for spatial light modulator imaging according to claim 1, characterized in that, The transmission unit includes a second Z-axis adjustment mechanism. The first polarizer is fixed to the second Z-axis adjustment mechanism by a bracket. A magnetic switch is provided at the bottom of the second Z-axis adjustment mechanism.

4. The observation device for spatial light modulator imaging according to claim 1, characterized in that, The transmissive placement platform includes a transmissive liquid crystal light valve placement stage and a transmissive SLM placement stage, with the transmissive liquid crystal light valve placement stage located inside the transmissive SLM placement stage.

5. The observation device for spatial light modulator imaging according to claim 4, characterized in that, The first surface light source is fixed to the bottom of the transmissive SLM placement stage, and the second polarizer is rotatably disposed at the bottom of the first surface light source and connected to the transmissive SLM placement stage.

6. The observation device for spatial light modulator imaging according to claim 2, characterized in that, A turntable is provided at the bottom of the prism, which is used to drive the prism to rotate.

7. The observation device for spatial light modulator imaging according to claim 6, characterized in that, The reflection unit also includes a column disposed at the bottom of the multi-axis adjustment device. A support base is disposed at the bottom of the column, and a slide rail is disposed on the column. The support base is connected to the bottom of the turntable, and the bottom of the turntable is connected to the slide rail.

8. The observation device for spatial light modulator imaging according to claim 6, characterized in that, The reflective placement platform includes a reflective SLM placement stage and a reflective liquid crystal light valve placement stage, which are sequentially arranged at the bottom of the prism.

9. The observation device for spatial light modulator imaging according to claim 8, characterized in that, The reflective SLM placement stage includes a base plate and a limiting block. The reflective SLM placement stage has a waist-shaped hole in the horizontal direction, and the limiting block is located in the waist-shaped hole.

10. The observation device for spatial light modulator imaging according to claim 9, characterized in that, The reflective liquid crystal light valve placement stage includes a base and an adapter plate, the adapter plate fixing the reflective liquid crystal light valve to the base.

Images