Lens interferometer detection
By setting up a spherical mirror, a flexor and a beam-expanding mirror group in the lens interferometer to optimize the optical path, the problem of lack of adjustment effect when detecting the lens in the prior art is solved, and accurate measurement of the optical performance and surface shape of the lens is achieved.
Patent Information
- Application Number
- CN202421891252.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-06
AI Technical Summary
Existing lens interferometers lack adjustment effects when detecting lenses, which affect the quality of the interference pattern and the accuracy of measurement results.
By setting up spherical mirrors, folding mirrors and beam-expanding sub-mirror groups in the lens interferometer, the optical path is optimized and adjusted, ensuring that the interferometer can accurately measure the optical performance and surface shape of the lens.
Accurate measurement of the optical properties and surface shape of the lens is achieved, improving the quality of the interference pattern and the accuracy of the measurement results.
Smart Images
Figure CN222993968U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of interference measurement, especially to the detection of a lens interferometer. Background Art
[0002] An interferometer is a general term for a very wide range of experimental techniques. The idea is to use the superposition of waves to obtain the phase information of the waves, so as to obtain the physical quantities concerned in the experiment. The interferometer is not limited to the optical interferometer. Interferometers are widely used in precision measurement fields such as astronomy, optics, engineering surveying, oceanography, seismology, spectral analysis, quantum physics experiments, remote sensing, radar, etc.
[0003] A lens interferometer is a precision instrument used to measure the surface shape and optical performance of an optical lens. It uses the principle of light interference to detect the surface characteristics and possible defects of the lens.
[0004] When some existing interferometers detect a lens to be detected, they do not have a good adjustment effect, which directly affects the quality of the interference pattern and the accuracy of the final measurement result. Content of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides the detection of a lens interferometer, aiming to improve the problem that when detecting a lens to be detected in the prior art, there is no good adjustment effect, which directly affects the quality of the interference pattern and the accuracy of the final measurement result.
[0006] To achieve the above purpose, the utility model provides the following technical solution: the detection of a lens interferometer, including a workbench, a mounting plate is fixedly connected to the top of the workbench, an interferometer is fixedly connected to the top of the workbench, a first folding mirror is fixedly connected to the right side of the interferometer, the first folding mirror is fixedly connected to the top of the workbench, an expanding beam secondary mirror group is fixedly connected to the front side of the mounting plate, a second folding mirror is arranged on the top of the interferometer, the second folding mirror is arranged on the front side of the mounting plate, a placing component is fixedly connected to the top of the workbench, and the placing component is used for placing and mounting the lens to be detected.
[0007] Further, the placing component includes a first lifting table, the first lifting table is fixedly connected to the top of the workbench, a first mirror chamber is fixedly connected to the top of the first lifting table, and the lens to be detected is arranged inside the first mirror chamber.
[0008] Further, a translation table is fixedly connected to the top of the workbench, and a translation cylinder is fixedly connected to the right side of the translation table.
[0009] Further, the translation cylinder is fixedly connected to the top of the workbench.
[0010] Further, a second lifting table is slidably connected to the top of the translation table.
[0011] Further, a second mirror chamber is fixedly connected to the top of the second lifting table, and a spherical mirror is arranged inside the second mirror chamber.
[0012] The utility model has the following beneficial effects:
[0013] 1. In the utility model, the spherical mirror is fixed in the second mirror chamber, and the second mirror chamber is placed on the second lifting table. By adjusting the second mirror chamber, the distance between the spherical mirror and the lens to be detected is ensured, which guarantees the back intercept and thus the focal length of the lens.
[0014] 2. In the utility model, through the cooperation of two sets of folding mirrors and the beam expander secondary mirror group, the optical path is optimized and adjusted to ensure that the interferometer can accurately measure the optical properties and surface shape of the lens to be detected. Description of the Drawings
[0015] Figure 1 is a three-dimensional view of the lens interferometer detection proposed by the utility model;
[0016] Figure 2 is Figure 1 the enlarged view at A in
[0017] Legend:
[0018] 1. Workbench; 2. Mounting plate; 3. Interferometer; 4. First folding mirror; 5. Beam expander secondary mirror group; 6. Second folding mirror; 7. First lifting table; 8. First mirror chamber; 9. Lens to be detected; 10. Second mirror chamber; 11. Spherical mirror; 12. Second lifting table; 13. Translation table; 14. Translation cylinder. Specific Embodiments
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0020] Refer to Figure 1 and Figure 2, An embodiment provided by the present utility model: lens interferometer detection, including a workbench 1, a mounting plate 2 is fixedly connected to the top of the workbench 1, an interferometer 3 is fixedly connected to the top of the workbench 1, a first folding mirror 4 is fixedly connected to the right side of the interferometer 3, the first folding mirror 4 is fixedly connected to the top of the workbench 1, an expander secondary mirror group 5 is fixedly connected to the front side of the mounting plate 2, a second folding mirror 6 is arranged on the top of the interferometer 3, the second folding mirror 6 is arranged on the front side of the mounting plate 2, a placement component is fixedly connected to the top of the workbench 1, and the placement component is used for placing and mounting the lens to be detected. The placement component includes a first lifting table 7, the first lifting table 7 is fixedly connected to the top of the workbench 1, a lens chamber one 8 is fixedly connected to the top of the first lifting table 7, and a lens to be detected 9 is arranged inside the lens chamber one 8.
[0021] The mounting plate 2 is used for mounting the second folding mirror 6 and the expander secondary mirror group 5. The interferometer 3 is used for emitting light for detection. The two folding mirrors and the expander secondary mirror group 5 are used for optimizing and adjusting the light to ensure that the interferometer 3 can accurately measure the optical performance and surface shape of the lens to be detected 9. The first lifting table 7 is used for adjusting the height of the lens chamber one 8, and the lens chamber one 8 is used for placing and mounting the lens to be detected 9.
[0022] Refer to Figure 1 and Figure 2 , a translation stage 13 is fixedly connected to the top of the workbench 1, a translation cylinder 14 is fixedly connected to the right side of the translation stage 13, the translation cylinder 14 is fixedly connected to the top of the workbench 1, a second lifting table 12 is slidably connected to the top of the translation stage 13, a lens chamber two 10 is fixedly connected to the top of the second lifting table 12, and a spherical mirror 11 is arranged inside the lens chamber two 10.
[0023] The second lifting table 12 on the translation stage 13 is driven by the translation cylinder 14 to move. The second lifting table 12 is used for adjusting the height of the lens chamber two 10. The lens chamber two 10 is used for mounting the spherical mirror 11. The spherical mirror 11 focuses or reflects the light into a spherical wave to form the required interference pattern in the light of the interferometer 3.
[0024] Working principle: When in use, by starting the interferometer 3, the interferometer 3 emits light, and then refracts through the first folding mirror 4. The refracted light passes through the expander secondary mirror group 5. The expander secondary mirror group 5 adjusts and expands the light in the interferometer 3. The light passes through the second folding mirror 6 after being adjusted by the expander secondary mirror group 5, and then passes through the lens to be detected 9 after refraction. Finally, an interference pattern is formed through the spherical mirror 11. The spherical mirror 11 is placed behind the lens to be detected 9. The spherical mirror 11 is fixed in the lens chamber two 10. The lens chamber two 10 is placed on the second lifting table 12. By driving the translation cylinder 14 to drive the second lifting table 12 to adjust the lens chamber two 10, ensure that the distance from the spherical mirror 11 to the lens to be detected 9 is 1000 ± 15 mm.
[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. Lens interferometer detection, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixedly connected to a mounting plate (2), the top of the workbench (1) is fixedly connected to an interferometer (3), the right side of the interferometer (3) is fixedly connected to a first folding mirror (4), the first folding mirror (4) is fixedly connected to the top of the workbench (1), the front side of the mounting plate (2) is fixedly connected to a beam expansion secondary mirror group (5), the top of the interferometer (3) is provided with a second folding mirror (6), the second folding mirror (6) is provided on the front side of the mounting plate (2), and the top of the workbench (1) is fixedly connected to a placement component, the placement component is used to place and install a lens to be inspected.
2. The lens interferometer detection according to claim 1, characterized in that: The placement assembly comprises a first lifting platform (7), the first lifting platform (7) being fixedly connected to the top of the workbench (1), the top of the first lifting platform (7) being fixedly connected to a mirror chamber 1 (8), and a lens to be inspected (9) being arranged inside the mirror chamber 1 (8).
3. The lens interferometer detection according to claim 1, characterized in that: The top of the workbench (1) is fixedly connected to a translation platform (13), and the right side of the translation platform (13) is fixedly connected to a translation cylinder (14).
4. The lens interferometer detection according to claim 3, characterized in that: The translation cylinder (14) is fixedly connected to the top of the workbench (1).
5. The lens interferometer detection according to claim 3, characterized in that: The top of the translation platform (13) is slidably connected to a second lifting platform (12).
6. The lens interferometer detection according to claim 5, characterized in that: The top of the second lifting platform (12) is fixedly connected to a second mirror chamber (10), and a spherical mirror (11) is arranged inside the second mirror chamber (10).