A multi-point starry sky simulation device
Patent Information
- Application Number
- CN202522675483.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-12-17
AI Technical Summary
[0004]本实用新型的目的在于克服上述技术不足，提出一种多点星空模拟装置，解决现有技术中星空模拟装置的星点板仅在其边缘部位布置光源，难以实现从星点板的中心到边缘的亮度过渡平滑，导致光场分布不均匀，影响了光学设备的测试效果的技术问题
[0015]与现有技术相比，本实用新型提供的多点星空模拟装置通过在星点板的中心设置中心光源，并在中心光源周围布置多个边侧光源，每个光源发出的光斑都是一个中心亮、向外逐渐变暗的圆形，这种光源布置方式能够有效填补传统星点板中心区域的暗区，实现从中心到边缘的亮度过渡平滑，显著改善了光场的均匀性。通过合理布局光源，避免了传统装置中因光源仅分布在边缘而导致的中心暗区问题，从而提高了光学设备测试的准确性。
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Figure CN224872370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of optical equipment technology, specifically to a multi-point starry sky simulation device. Background Technology
[0002] With the continuous development of optical technology, optical equipment is increasingly widely used in military, astronomical, and industrial inspection fields. In these applications, the performance testing and calibration of optical equipment are crucial, and simulating real starry skies has become one of the important means of testing the performance of optical equipment (such as telescopes and sights). For example, in the testing of astronomical observation equipment, it is necessary to simulate stellar environments with different brightness and distributions to calibrate the equipment's field of view.
[0003] Traditional star simulation devices mainly employ single star point plates or complex light source systems, such as integrating spheres. These devices simulate the starry sky environment through a single light source or simple optical structure. While they met the testing needs of early optical equipment to some extent, with the advancement of optical technology and the increasing demands for testing accuracy, existing technologies still have shortcomings. For example, traditional star simulation devices only place light sources at the edges of the star point plate, making it difficult to achieve a smooth brightness transition from the center to the edge of the star point plate. This results in uneven light field distribution, affecting the testing performance of optical equipment. Utility Model Content
[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a multi-point starry sky simulation device. This solves the technical problem that in the existing starry sky simulation device, the star point plate only arranges light sources at its edge, making it difficult to achieve a smooth brightness transition from the center to the edge of the star point plate, resulting in uneven light field distribution and affecting the testing effect of optical equipment.
[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a multi-point starry sky simulation device, including: Collimator; and The light source assembly includes a power board, a star point plate, a central light source, and multiple side light sources built into the collimator. The central light source is located at the center of the power board, and the multiple side light sources are arranged around the central light source on the power board. The star point plate has a central star point hole at its center and multiple side star point holes around the central star point hole. The central star point hole corresponds to the position of the central light source, and their centers are located on the optical axis of the collimator. The multiple side star point holes correspond to the positions of the multiple side light sources.
[0006] In some embodiments, the lines connecting the plurality of side light sources can form a square, and the central light source is located at the intersection of the two diagonals of the square.
[0007] In some embodiments, the light source assembly further includes a filter disposed on the collimator and located between the power board and the star plate.
[0008] In some embodiments, the filter wavelength is 400nm-760nm.
[0009] In some embodiments, the diameter of the central star-shaped hole and the plurality of side star-shaped holes is 5 μm.
[0010] In some embodiments, the diameter of the central star-shaped aperture is smaller than the light-emitting center region of the central light source, and the diameter of the side star-shaped aperture is smaller than the light-emitting center region of the side light source.
[0011] In some embodiments, the multi-point starry sky simulation device further includes a power supply connected to the power board, and the central light source and multiple side light sources are connected in parallel to the power board.
[0012] In some embodiments, the starry sky simulation device further includes a support assembly, which includes a connected base and a support mechanism, the support mechanism being sleeved on the collimator.
[0013] In some embodiments, the support mechanism includes a clamp and a support member, one end of the support member is connected to the base, and the other end of the support member is connected to the clamp, the clamp being detachably fitted onto the outer wall of the parallel light tube.
[0014] In some embodiments, the support includes a fixed base, a telescopic rod, and a tightening screw. The bottom of the fixed base is connected to the base, the top of the fixed base is slidably connected to the telescopic rod, the top of the telescopic rod is connected to the clamp, and the tightening screw is threaded to the fixed base and is capable of damping and abutting against or disengaging from the telescopic rod during rotation.
[0015] Compared with existing technologies, the multi-point star simulation device provided by this invention sets a central light source at the center of a star point plate and arranges multiple side light sources around the central light source. The light spot emitted by each light source is a circle that is bright in the center and gradually darkens outwards. This arrangement of light sources can effectively fill the dark area in the central region of the traditional star point plate, achieving a smooth brightness transition from the center to the edge and significantly improving the uniformity of the light field. By rationally arranging the light sources, the problem of a dark central area caused by light sources only being distributed at the edges in traditional devices is avoided, thereby improving the accuracy of optical equipment testing. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the multi-point starry sky simulation device provided in this embodiment of the utility model; Figure 2 This is a cross-sectional schematic diagram of the multi-point starry sky simulation device provided in this embodiment of the utility model; Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the diagram; Figure 4 This is a schematic diagram of the power board structure provided in an embodiment of the present utility model; Figure 5 This is a schematic diagram of the structure of the star-shaped plate provided in an embodiment of the present invention. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0018] To address the technical problem that existing star simulation devices only place light sources at the edges of the star plate, making it difficult to achieve a smooth brightness transition from the center to the edge of the star plate, resulting in uneven light field distribution and affecting the testing effect of optical equipment, this invention provides a multi-point star simulation device that can effectively fill the dark area in the central region of the traditional star plate, achieve a smooth brightness transition from the center to the edge, and significantly improve the uniformity of the light field.
[0019] It should be noted that the multi-point starry sky simulation device described in this utility model is used for, but not limited to, testing of astronomical observation devices. For ease of explanation, this utility model only uses the application of the multi-point starry sky simulation device to the testing of astronomical observation devices as an example. The principle of the multi-point starry sky simulation device applied to other types of equipment is essentially the same as that applied to astronomical observation devices, and will not be elaborated here.
[0020] Please see Figures 1 to 5 , Figure 1 This is a schematic diagram of the structure of a multi-point starry sky simulation device in one embodiment of the present invention. The multi-point starry sky simulation device includes a light source assembly 1 and a collimator 2. The light source assembly 1 is disposed on the collimator 2. The light source assembly 1 includes a power board 11, a star point plate 12, a central light source 13, and multiple side light sources 14. The central light source 13 is disposed at the center of the power board 11. Multiple side light sources 14 are disposed around the central light source 13 on the power board 11. The star point plate 12 has a central star point hole 121 and multiple side star point holes 122 around the central star point hole 121. The central star point hole 121 and the central light source 13 are positioned correspondingly, and their centers are located on the optical axis of the collimator 2. The multiple side star point holes 122 and the multiple side light sources 14 are positioned correspondingly.
[0021] In this embodiment, the central light source 13 and the multiple side light sources 14 all employ high-brightness LEDs, and the parameters of each light source are ensured to be consistent (such as operating voltage and current) to ensure uniformity of light output. The central light source 13 and the multiple side light sources 14 are connected to the circuit of the power board 11 in parallel to ensure that each light source receives a stable power supply.
[0022] Prepare a star-shaped plate 12, and make a central star-shaped hole 121 and multiple side star-shaped holes 122 on it. The central star-shaped hole 121 corresponds to the position of the central light source 13, and the multiple side star-shaped holes 122 correspond to the positions of multiple side light sources 14. The positional correspondence here can be understood as the central axis coinciding and the central axis being parallel to the optical axis extension direction of the collimator.
[0023] Both the central star-point aperture 121 and the side star-point apertures 122 have a diameter of 5 μm. This micro-aperture design limits the size of the light source, approximating an ideal point light source, while reducing the divergence angle caused by the diffraction limit and improving the collimation accuracy of the emitted light. The star-point plate 12 is installed at the front end of the light source assembly 1, ensuring that the positions of each star-point aperture and each light source are precisely aligned. The star-point plate 12 can be installed and fixed to the inner wall of the collimator 2 using screws or other fixing methods.
[0024] The function of collimator 2 is to provide an infinite distance to simulate the starry sky, ensuring high parallelism of the emitted light. The assembled light source assembly 1 is installed at the tail end of collimator 2, ensuring a tight fit between the light source assembly 1 and collimator 2. The two can be achieved through threaded connection or other fixing methods to ensure the stability of the device.
[0025] Turn on the power supply to enable the central light source 13 and the side light sources 14 to emit light normally. Use a light intensity detection device to measure the light intensity distribution at different locations (such as the central area and the edge area) to verify whether the brightness transition from the center to the edge is smooth. The test results show that this device can effectively fill the dark area in the central region of a traditional star-shaped plate and significantly improve the uniformity of the light field.
[0026] Collimation accuracy test: The parallelism of the emitted light was verified using a parallel light detection device. The divergence angle (half-angle) θ≈λ / D (where λ is the wavelength of the light and D is the diameter of the star aperture) was calculated. The theoretically calculated divergence angle is approximately 6.3 degrees (taking green light as an example). Actual test results show that the emitted light from this device has high collimation accuracy and can meet the requirements of high-precision optical testing. The micro-aperture design (5μm) can approximate an ideal point light source, improving the collimation accuracy of the emitted light.
[0027] The multi-point starscape simulation device of this application can be used for performance testing of astronomical telescopes. By simulating stellar environments of varying brightness and distribution, it can accurately test and calibrate the telescope's performance indicators such as field of view, resolution, and sensitivity. The specific testing process involves placing the telescope at an appropriate position in front of the multi-point starscape simulation device and testing it against the simulated starscape environment. The imaging effect of the telescope at different positions is recorded to verify whether its optical performance meets design requirements.
[0028] In one embodiment, please refer to Figure 4 The lines connecting the multiple side light sources 14 can form a square, with the central light source 13 located at the intersection of the two diagonals of the square. This embodiment, by arranging the multiple side light sources 14 into a square, achieves a high degree of symmetry (90-degree rotational symmetry), ensuring similar light intensity distribution in any direction, thus achieving a smooth brightness transition from the center to the edge of the star-shaped plate 12. Through this rational layout, the light fields of the central light source 13 and the side light sources 14 can overlap, filling the central dark area while illuminating the edge corners, significantly improving the uniformity of the light field.
[0029] In one embodiment, please refer to Figure 3 The light source assembly 1 also includes a filter 15, which is disposed on the collimator 2 and located between the power board 11 and the star plate 12. In this embodiment, by setting the filter 15, stray light interference can be reduced, the purity of the light field can be improved, and the influence of stray light on the test results can be avoided. The filter 15 can also filter out unwanted wavelengths of light, allowing only light within a specific wavelength range (e.g., 400nm-760nm) to pass through, making the simulated starlight closer to reality and avoiding interference from other wavelengths of light on the test results. This is crucial for testing the performance of optical equipment (such as telescopes) and ensures the accuracy and reliability of the test results.
[0030] In one embodiment, please refer to Figure 5 The central star-shaped hole 121 and the multiple side star-shaped holes 122 all have a diameter of 5 μm. In this embodiment, the diameter of both the central star-shaped hole 121 and the multiple side star-shaped holes 122 is designed to be 5 μm. This micro-aperture structure effectively limits the size of the light source, approximating an ideal point light source, thereby improving the collimation accuracy of the emitted light. The star-shaped plate 12 can be manufactured using high-precision optical materials, such as optical glass or a metal substrate, ensuring a smooth surface and stable optical performance. During processing, high-precision laser drilling or electron beam drilling technology can be used to manufacture the star-shaped holes. After processing, a high-precision microscope or optical inspection equipment is used to inspect the size and shape of the star-shaped holes, ensuring that the diameter of each hole is 5 μm and that there are no burrs or deformations.
[0031] In one embodiment, the diameter of the central star-shaped aperture 121 is smaller than the light-emitting center region of the central light source 13, and the diameter of the side star-shaped aperture 122 is smaller than the light-emitting center region of the side light source 14. This embodiment, by designing the diameter of the star-shaped apertures to be smaller than the light-emitting center region of the light source, ensures that the light emitted by the light source can pass through the star-shaped apertures efficiently, avoiding light waste and allowing the light from each light source to be output through its corresponding star-shaped aperture, thus improving light utilization efficiency. Furthermore, because the diameter of the star-shaped apertures is smaller than the light-emitting center region of the light source, the light emitted by each light source, after passing through the star-shaped apertures, can form a uniform light spot, effectively filling the dark area in the central region of a traditional star-shaped plate and achieving a smooth brightness transition from the center to the edge.
[0032] In one embodiment, please refer to Figure 1 The multi-point starry sky simulation device also includes a power supply 3, which is connected to a power board 11. The central light source 13 and multiple side light sources 14 are all connected in parallel to the power board 11. In this embodiment, a stable DC regulated power supply can be used as the power supply 3 to meet the power requirements of the central light source 13 and multiple side light sources 14. Parallel circuits are designed on the power board 11 to ensure that each light source receives the same voltage and current. Appropriate resistors or current limiting devices can also be used to protect the light sources from overcurrent damage.
[0033] In one embodiment, please refer to Figure 1 The starry sky simulation device also includes a support assembly 4, which comprises a base 41 and a support mechanism 42 connected together. The support mechanism 42 is sleeved on the collimator 2. In this embodiment, the base 41 can be configured as a rectangular or circular flat plate structure, and the size of the base 41 can be optimized according to the overall size and weight of the device. The bottom of the base 41 can be provided with an anti-slip pad or rubber feet to increase the friction with the placement surface and prevent the device from sliding during use.
[0034] Further, please refer to Figure 1 The support mechanism 42 includes a clamp 421 and a support member 422. One end of the support member 422 is connected to the base 41, and the other end is connected to the clamp 421. The clamp 421 is detachably fitted onto the outer wall of the collimator 2. In this embodiment, the clamp 421 is detachably fitted onto the collimator 2, making it quick and convenient to replace the collimator 2. The support member 422 is roughly rod-shaped and is mainly used to support the collimator 2 so that the collimator 2 can be kept horizontal. One end of the support member 422 can be detachably fixed to the base 41 with screws, and the other end of the support member 422 can be detachably connected to the clamp 421 with screws, making disassembly and assembly quick and convenient.
[0035] Further, please refer to Figure 1The support component 422 includes a fixed base 423, a telescopic rod 424, and a tightening screw 425. The bottom of the fixed base 423 is connected to the base 42, and the top of the fixed base 423 is slidably connected to the telescopic rod 424. The top of the telescopic rod 424 is connected to a clamp 421. The tightening screw 425 is threadedly connected to the fixed base 423 and can dampen and tighten or disengage the telescopic rod 424 during rotation. In this embodiment, the height of the parallel light tube 2 can be adjusted by sliding the telescopic rod 424 up and down relative to the fixed base 423, and the telescopic rod 424 can be locked or unlocked by the tightening screw 425, making it convenient to use.
[0036] To better understand this utility model, the following is combined with... Figures 1 to 5 The technical solution of this utility model is described in detail below: The multi-point starry sky simulation device provided by this utility model sets a central light source 13 at the center of a star point plate 12, and arranges multiple side light sources 14 around the central light source 13. The light spot emitted by each light source is a circle that is bright in the center and gradually darkens outward. This arrangement of light sources can effectively fill the dark area in the central region of the traditional star point plate 12, achieve a smooth brightness transition from the center to the edge, and significantly improve the uniformity of the light field. By rationally arranging the light sources, the problem of a dark central area caused by light sources only being distributed at the edge in traditional devices is avoided, thereby improving the accuracy of optical equipment testing.
[0037] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. A multi-point starry sky simulation device, characterized in that, include: collimator; and The light source assembly includes a power board, a star point plate, a central light source, and multiple side light sources built into the collimator. The central light source is located at the center of the power board, and the multiple side light sources are arranged around the central light source on the power board. The star point plate has a central star point hole at its center and multiple side star point holes around the central star point hole. The central star point hole corresponds to the position of the central light source, and their centers are located on the optical axis of the collimator. The multiple side star point holes correspond to the positions of the multiple side light sources.
2. The multi-point starry sky simulation device according to claim 1, characterized in that, The lines connecting the multiple side light sources can form a square, and the central light source is located at the intersection of the two diagonals of the square.
3. The multi-point starry sky simulation device according to claim 1, characterized in that, The light source assembly also includes a filter, which is disposed on the collimator and located between the power board and the star plate.
4. The multi-point starry sky simulation device according to claim 3, characterized in that, The filter has a wavelength of 400nm-760nm.
5. The multi-point starry sky simulation device according to claim 1, characterized in that, The diameter of the central star-shaped hole and the plurality of side star-shaped holes is 5 μm.
6. The multi-point starry sky simulation device according to claim 1, characterized in that, The diameter of the central star-shaped aperture is smaller than the light-emitting center region of the central light source, and the diameter of the side star-shaped aperture is smaller than the light-emitting center region of the side light source.
7. The multi-point starry sky simulation device according to claim 1, characterized in that, The multi-point starry sky simulation device also includes a power supply, which is connected to the power board. The central light source and multiple side light sources are all connected in parallel to the power board.
8. The multi-point starry sky simulation device according to claim 1, characterized in that, The starry sky simulation device also includes a support component, which includes a connected base and a support mechanism, with the support mechanism sleeved on the parallel light tube.
9. The multi-point starry sky simulation device according to claim 8, characterized in that, The support mechanism includes a clamp and a support member. One end of the support member is connected to the base, and the other end of the support member is connected to the clamp. The clamp is detachably fitted onto the outer wall of the parallel light tube.
10. The multi-point starry sky simulation device according to claim 9, characterized in that, The support includes a fixed base, a telescopic rod, and a tightening screw. The bottom of the fixed base is connected to the base, the top of the fixed base is slidably connected to the telescopic rod, the top of the telescopic rod is connected to the clamp, and the tightening screw is threaded to the fixed base and can dampen and abut against or disengage from the telescopic rod during rotation.