Optical lens assembling and adjusting positioning device and positioning method

Abstract

The invention relates to the technical field of sparse hole imaging, in particular to an optical lens adjusting and positioning device and method. The adjusting and positioning device comprises a light source and a plurality of light path assemblies. The light path assembly comprises a guide rail and two reflective lenses arranged on the guide rail in a sliding mode. The two reflective lenses are arranged in a matched mode so that light rays of the light source can be emitted out after being reflected by the two reflective lenses. And the plurality of light path assemblies are matched with the plurality of lenses, so that light rays emitted after being reflected by the two reflective lenses of each light path assembly enter one lens respectively. During use, the positions of the plurality of light path assemblies are adjusted firstly, so that each group of light path assemblies corresponds to one lens. The reflective lenses are then slid such that the two reflective lenses of each group correspond to the light source and the lens, respectively. At the moment, light of the light source is reflected by the two reflective lenses and then enters the lens. The reflective lens can slide relative to the guide rail, so that the position of the reflective lens can be changed, and sparse aperture imaging systems with different sizes can be adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of sparse hole imaging, and in particular to an optical lens assembly and positioning device and a positioning method. Background Art

[0002] Ultra-high resolution imaging systems are widely used in remote sensing satellites and space telescopes. In recent years, sparse aperture imaging technology has been developed. Sparse aperture imaging systems use sparse array sensors for imaging, which usually have multiple sub-telescopes and a beam combining mechanism. The light from several sub-telescopes converges in the beam combining mechanism.

[0003] In the adjustment of sparse aperture imaging systems, in order to observe the interference pattern during the adjustment of the beam combiner, it is necessary to provide an incident light beam for each group of sub-telescopes so that the light beams can be converged to the beam combiner through the sub-telescopes. The existing adjustment devices are targeted and cannot adapt to the adjustment of different types of sparse aperture imaging systems. Summary of the invention

[0004] The object of the present invention is to provide an optical lens installation and positioning device and a positioning method, which can conveniently adjust the position of a reflective lens and facilitate rapid positioning.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] An optical lens assembly and positioning device comprises a light source and a plurality of optical path components; the optical path components comprise a guide rail and two reflective lenses slidably arranged on the guide rail; the two reflective lenses are arranged in cooperation so that the light from the light source is emitted after being reflected by the two reflective lenses; the plurality of optical path components are arranged in cooperation with a plurality of lenses so that the light emitted after being reflected by the two reflective lenses of each optical path component enters each lens.

[0007] Furthermore, the included angles between the two reflective lenses of the optical path assembly and the axial direction of the guide rail are both 45 degrees and the two reflective lenses are arranged opposite to each other; the light rays emitted by the light source are parallel to each other.

[0008] Furthermore, it also includes a positioning ring; a clamping mechanism for clamping the positioning ring is provided at the end of the guide rail, so that the guide rail is fixed to the positioning ring through the clamping mechanism.

[0009] Furthermore, it also includes a mounting ring for fixing the light source; a plurality of tightening screws are evenly distributed around the mounting ring so that the tightening screws can extend into the center of the mounting ring; the relative positions of the mounting ring and the positioning ring are fixed and the center lines of the two are colinear.

[0010] Furthermore, the clamping mechanism includes a fixed clip, a sliding clip and a locking nut; the fixed clip is arranged at the end of the guide rail; the sliding clip is sleeved on the outside of the guide rail; the locking nut is threadedly connected to the guide rail so that the locking nut can push the sliding clip tightly against the fixed clip.

[0011] Furthermore, the guide rail includes a guide section and a fixed section; the fixed section is cylindrical; the sliding clip is slidably arranged on the fixed section; the fixed section is provided with an external thread in cooperation with the locking nut; and the reflective lens is slidably arranged on the guide section.

[0012] Furthermore, the outer wall of the positioning ring is provided with scale lines.

[0013] Furthermore, the positioning ring is also provided with a shading plate; the shading plate is arranged inside the positioning ring; the shading plate is provided with a light-through hole; the center of the light-through hole is located on the axis line of the positioning ring.

[0014] An optical lens positioning method is applied to the above-mentioned optical lens installation and positioning device, comprising the following steps:

[0015] S1. Install several optical path components on the positioning ring so that each optical path component corresponds to a lens;

[0016] S2, adjusting the positions of the two reflective lenses of each optical path assembly so that the two reflective lenses correspond to the light source and the lens respectively;

[0017] S3, block several lenses so that only one lens has light entering;

[0018] S4, adjusting the sparse aperture imaging system so that a clear spot pattern is collected on the detector;

[0019] S5, cancel the occlusion of the remaining lenses one by one, and repeat step S4 after each lens is unblocked and before the next lens is unblocked until the detector collects a clear interference pattern.

[0020] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0021] When the optical lens assembly and positioning device of the present invention is used, the positions of the plurality of optical path components are first adjusted so that each group of optical path components corresponds to a lens. Then, the reflective lenses are slid so that the two reflective lenses in each group correspond to the light source and the lens respectively. At this time, the light from the light source is reflected by the two reflective lenses and then enters the lens. The plurality of lenses of the sparse aperture imaging system can collect the light. These light rays are combined by the beam combining mechanism and then reach the detector.

[0022] Since the reflective lens can slide relative to the guide rail, its position can be changed, thereby being able to adapt to sparse aperture imaging systems of different sizes.

[0023] The angle between the two reflective lenses in each group and the guide rail is fixed and adjusted to 45 degrees, so that when adjusting the two reflective lenses, only the distance between them needs to be adjusted to adapt to the sparse aperture imaging system, without adjusting the angle, which greatly improves the adjustment efficiency. The track is fixed to the positioning ring through a clamping mechanism, so that the positions of several groups of optical path components relative to the positioning ring can be adjusted as needed. At the same time, the number of optical path components can also be increased or decreased. Thus, it can better adapt to different types of sparse aperture imaging systems. The shading plate set on the positioning ring can block excess light and avoid interference caused by excess light passing through; at the same time, if a lens is also set at the center of the sparse aperture imaging system, the light passing through the light hole at the center of the shading plate can be projected into the lens at the center, which enhances adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the cooperation between the optical lens mounting and positioning device of the present invention and the sparse aperture imaging system.

[0025] Figure 2 It is a schematic diagram of the coordination of several optical path components and positioning rings.

[0026] Figure 3 Left view of the sparse aperture imaging system.

[0027] Figure 4 Schematic diagram of the light source installed on the mounting ring.

[0028] Figure 5 Schematic diagram of the structure inside the positioning ring.

[0029] Figure numerals: 1-light source, 2-guide rail, 3-reflective lens, 4-lens, 5-positioning ring, 6-mounting ring, 7-tightening screw, 8-fixing clip, 9-sliding clip, 10-locking nut, 11-guide section, 12-light hole, 13-lens, 14-beam combining mechanism, 15-detector, 16-shading plate, 17-light hole. DETAILED DESCRIPTION

[0030] like Figure 1-5As shown, the present invention provides an optical lens adjustment and positioning device, including a light source 1 and a plurality of optical path components. The optical path component includes a guide rail 2 and two reflective lenses 3 slidably arranged on the guide rail 2. Specifically, the reflective lenses 3 are provided with a sleeve in cooperation with the guide rail 2. The guide rail 2 can just be inserted into the sleeve, so that the sleeve can slide relative to the guide rail 2 without shaking. The reflective lens 3 is installed on the sleeve so that it can slide relative to the guide rail 2 to adjust its position. In addition, a screw that can be inserted into the sleeve is also provided on the sleeve. By tightening the screw against the guide rail 2, the position of the reflective lens 3 relative to the guide rail 2 can be locked. The guide rail 2 is arranged in a square shape, and the interior of the sleeve is also arranged in a square shape, so that the sleeve can only slide relative to the guide rail 2 but cannot rotate.

[0031] like Figure 1 As shown, the two reflective lenses 3 are arranged in cooperation with each other so that the light from the light source 1 is reflected by the two reflective lenses 3 and then emitted. Figure 1 The dotted line in the figure is the path of the light. A plurality of optical path components are arranged in cooperation with a plurality of lenses 134 so that the light emitted after being reflected by the two reflective lenses 3 of each optical path component enters one lens 134 respectively.

[0032] The sparse aperture imaging system includes a plurality of sub-telescopes, which are referred to as lenses 134 in this embodiment. The light rays collected by the plurality of lenses 134 are combined by the beam combining mechanism 14 and then enter the detector 15. The detector 15 detects and analyzes the light spots formed by the light rays.

[0033] When the optical lens assembly and positioning device of the present invention is used, the positions of the plurality of optical path components are first adjusted so that each group of optical path components corresponds to a lens 134. Then, the reflective lens 3 is slid so that the two reflective lenses 3 of each group correspond to the light source 1 and the lens 134. At this time, the light from the light source 1 is reflected by the two reflective lenses 3 and then enters the lens 134. The plurality of lenses 134 of the sparse aperture imaging system can collect the light. These light rays are combined by the beam combining mechanism 14 and then reach the detector 15.

[0034] Since the reflective lens 3 can slide relative to the guide rail 2, its position can be changed, so that it can adapt to sparse aperture imaging systems of different sizes. At the same time, if the reflective lens 3 is set as an angle-adjustable mechanism, the angle of the light entering the lens 134 can be adjusted, so as to meet more needs.

[0035] In this embodiment, the angles between the two reflective lenses 3 of the optical path assembly and the axis direction of the guide rail 2 are both 45 degrees and the two reflective lenses 3 are arranged opposite to each other. Figure 1As shown, the light emitted by the light source 1 is parallel to each other. When the light emitted by the light source 1 enters a plurality of reflective lenses at an angle of 45 degrees, the plurality of light beams are reflected twice by two reflective lenses in each group and then split into a plurality of mutually separated parallel light beams. These light beams enter the interior of a lens 134 respectively, thereby meeting the requirements of the sparse aperture imaging system for debugging the light source 1.

[0036] The angle between the two reflective lenses 3 of each group and the guide rail 2 is fixedly adjusted to 45 degrees, so that when adjusting the two reflective lenses 3, only the distance between them needs to be adjusted to adapt to the sparse aperture imaging system, and there is no need to adjust the angle, which greatly improves the adjustment efficiency.

[0037] In this embodiment, a positioning ring 5 is also included. A clamping mechanism for clamping the positioning ring 5 is provided at the end of the guide rail 2, so that the guide rail 2 is fixed to the positioning ring 5 through the clamping mechanism. The clamping mechanism includes a fixed clip 8, a sliding clip 9 and a locking nut 10. The fixed clip 8 is provided at the end of the guide rail 2. The sliding clip 9 is sleeved on the outside of the guide rail 2. The locking nut 10 is threadedly connected to the guide rail 2, so that the locking nut 10 can push the sliding clip 9 to the fixed clip 8.

[0038] When in use, the sliding clip 9 can be loosened or locked by turning the locking nut 10, thereby loosening or clamping the positioning ring 5. This makes it easy to adjust the installation position of the guide rail 2 relative to the positioning ring 5, and also makes it easy to adjust the installation quantity of the guide rail 2, thereby better adapting to various types of sparse aperture imaging systems.

[0039] In this embodiment, a mounting ring 6 for fixing the light source 1 is also included. Figure 4 As shown, a number of tightening screws 7 are evenly distributed around the mounting ring 6 so that the tightening screws 7 can extend into the center of the mounting ring 6. The light source 1 can be fixed inside the mounting ring 6 by placing the light source 1 inside the mounting ring 6 and tightening the number of tightening screws 7. The relative positions of the mounting ring 6 and the positioning ring 5 are fixed and the center lines of the two are in line. The mounting ring 6 and the positioning ring 5 can be connected together by a connecting rod or other device, so that the two become a whole. When installing the light source 1, there is no need to adjust the positional relationship between the mounting ring 6 and the positioning ring 5, which makes the operation simpler. At the same time, the center lines of the two are in line, which also allows the light beam emitted by the light source 1 to pass through the center of the positioning ring 5. For several optical path components, only one of the reflective lenses 3 needs to be moved to the center of the positioning ring 5.

[0040] In this embodiment, the guide rail 2 includes a guide section 11 and a fixed section. The fixed section is cylindrical, which is convenient for setting an external thread so that the locking nut 10 can rotate relative to the fixed section. The sliding clip 9 is slidably set on the fixed section. The fixed section is provided with an external thread in conjunction with the locking nut 10. The reflective lens 3 is slidably set on the guide section 11. The guide section 11 is set in a square column shape. And the interior of the sleeve is also set in a square shape, so that the sleeve can only slide relative to the guide rail 2 but cannot rotate. In order to facilitate the passage of light, the guide section 11 is also provided with a strip-shaped light-transmitting hole 12. The light-transmitting hole 12 is set along the length direction of the guide rail 2. The light reflected by the second reflective lens 3 is projected toward the lens 134 through the light-transmitting hole 12.

[0041] In this embodiment, the outer wall of the positioning ring 5 is provided with scale lines. When the guide rail 2 is installed by the fixed clamping piece 8 and the sliding clamping piece 9, the guide rail 2 can be conveniently positioned by the scale lines, which is convenient for use.

[0042] In this embodiment, the positioning ring 5 is also provided with a light shielding plate 16. Figure 5 As shown, the shading plate 16 is arranged inside the positioning ring 5. The shading plate 16 is provided with a light-through hole 17. The center of the light-through hole 17 is located on the axis line of the positioning ring 5.

[0043] The plurality of reflective lenses 3 at the center of the positioning ring 5 cannot fill the interior of the positioning ring 5, and light will always pass through the positioning ring 5. The shading plate 16 provided on the positioning ring 5 can block excess light and prevent excess light from passing through and causing interference. At the same time, if a lens 134 is also provided at the center of the sparse aperture imaging system, the light passing through the light hole 17 at the center of the shading plate 16 can be projected into the lens 134 at the center, thereby enhancing adaptability.

[0044] The present invention also provides an optical lens positioning method, which is applied to the above-mentioned optical lens installation and positioning device, and comprises the following steps:

[0045] S1. Install several optical path components on the positioning ring 5 so that each optical path component corresponds to a lens 134.

[0046] S2. Adjust the positions of the two reflective lenses 3 of each optical path component so that the two reflective lenses 3 correspond to the light source 1 and the lens 134 respectively.

[0047] S3. Block a plurality of lenses 134 so that light enters only one lens 134 .

[0048] S4. Adjust the sparse aperture imaging system so that a clear spot pattern is collected on the detector 15.

[0049] S5, unblocking the remaining lenses 134 one by one, and repeating step S4 after each lens 134 is unblocked and before the next lens 134 is unblocked until the detector 15 collects a clear interference pattern.

[0050] In this way, adjustments can be made quickly and efficiency can be improved.

Claims

1. An optical lens adjustment and positioning device, characterized in that: It comprises a light source and a plurality of optical path components; the optical path components comprise a guide rail and two reflective lenses slidably arranged on the guide rail; the two reflective lenses are arranged in cooperation so that the light of the light source is emitted after being reflected by the two reflective lenses; the plurality of optical path components are arranged in cooperation with a plurality of lenses so that the light emitted after being reflected by the two reflective lenses of each optical path component enters each lens.

2. The optical lens adjustment and positioning device according to claim 1, characterized in that: The included angles between the two reflective lenses of the optical path assembly and the axial direction of the guide rail are both 45 degrees and the two reflective lenses are arranged opposite to each other; the light rays emitted by the light source are parallel to each other.

3. The optical lens adjustment and positioning device according to claim 2, characterized in that: It also includes a positioning ring; a clamping mechanism for clamping the positioning ring is arranged at the end of the guide rail, so that the guide rail is fixed to the positioning ring through the clamping mechanism.

4. The optical lens adjustment and positioning device according to claim 3, characterized in that: It also includes a mounting ring for fixing the light source; a plurality of tightening screws are evenly distributed around the mounting ring so that the tightening screws can extend into the center of the mounting ring; the relative positions of the mounting ring and the positioning ring are fixed and the center lines of the two are on the same line.

5. The optical lens adjustment and positioning device according to claim 4, characterized in that: The clamping mechanism includes a fixed clip, a sliding clip and a locking nut; the fixed clip is arranged at the end of the guide rail; the sliding clip is sleeved on the outside of the guide rail; the locking nut is threadedly connected to the guide rail so that the locking nut can push the sliding clip tightly against the fixed clip.

6. The optical lens adjustment and positioning device according to claim 5, characterized in that: The guide rail includes a guide section and a fixed section; the fixed section is cylindrical; the sliding clip is slidably arranged on the fixed section; the fixed section is provided with an external thread in cooperation with the locking nut; the reflective lens is slidably arranged on the guide section; the guide section is arranged in a square column shape.

7. The optical lens adjustment and positioning device according to claim 6, characterized in that: The outer wall of the positioning ring is provided with scale lines.

8. The optical lens adjustment and positioning device according to claim 7, characterized in that: The positioning ring is also provided with a shading plate; the shading plate is arranged inside the positioning ring; the shading plate is provided with a light-through hole; the center of the light-through hole is located on the axis line of the positioning ring.

9. An optical lens positioning method, characterized in that: The optical lens adjustment and positioning device used in claims 3-8 comprises the following steps: S1. Install several optical path components on the positioning ring so that each optical path component corresponds to a lens; S2, adjusting the positions of the two reflective lenses of each optical path assembly so that the two reflective lenses correspond to the light source and the lens respectively; S3, block several lenses so that only one lens has light entering; S4, adjusting the sparse aperture imaging system so that a clear spot pattern is collected on the detector; S5, cancel the occlusion of the remaining lenses one by one, and repeat step S4 after each lens is unblocked and before the next lens is unblocked until the detector collects a clear interference pattern.

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