Laser light spot analyzer
Through a laser spot analyzer with a combined structure of spectroscopy and reflector, the problem of camera susceptibility to interference in laser spot analysis is solved, and high-precision laser spot measurement and multi-wavelength applicability are achieved.
Patent Information
- Application Number
- CN202422826661.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In the prior art, the use of a camera during laser spot analysis is susceptible to laser power interference, resulting in inaccurate measurement results.
Using a combined structure of the first spectrometer, the first camera, the mirror assembly, the second spectrometer and the second camera, the spot image of the laser beam under different optical paths is obtained through the setting of the spectrometer and the mirror, and the laser spot performance parameters are analyzed through the fitting process.
It realizes high-precision laser spot measurement, with simple structure, low cost, good applicability and versatility, and can measure lasers of different wavelengths.
Smart Images
Figure CN223307803U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lasers, in particular to a laser spot analyzer. Background Art
[0002] During the application of the laser, the laser beam quality will be analyzed according to the application requirements, such as: analysis of the ellipticity and size of the laser spot; analysis of the laser energy distribution; and so on.
[0003] Currently, cameras are commonly used to analyze laser spot data. However, since laser power is generally high, and cameras are precision instruments, they are susceptible to interference, resulting in large fluctuations in even small amounts and inaccurate measurement results. In light of this, the present invention was developed. Summary of the Invention
[0004] In order to overcome the above defects, the utility model provides a laser spot analyzer, which not only has high measurement accuracy and well meets the measurement requirements of laser beams; but also has a simple and reasonable structure, low production cost, and good applicability and versatility.
[0005] The technical solution adopted by the present invention to solve its technical problems is: a laser spot analyzer, comprising a first beam splitter, a first camera, a reflector assembly, a second beam splitter and a second camera, wherein the first beam splitter is used to split the light beam emitted by the laser into a first reflected light beam and a first transmitted light beam, and the first camera is arranged on a preset optical path of the first reflected light beam to obtain a light spot image of the first reflected light beam; the reflector assembly is provided with a plurality of first reflectors, and the plurality of first reflectors are arranged at intervals on the preset optical path of the first transmitted light beam to lengthen the optical path of the first transmitted light beam; the second beam splitter is used to split the first transmitted light beam into a second reflected light beam and a second transmitted light beam, and the second camera is arranged on the preset optical path of the second reflected light beam to obtain a light spot image of the second reflected light beam.
[0006] As a further improvement of the present invention, the lenses of the first camera and the second camera are both arranged vertically downward, and filters are respectively arranged below the lenses of the first camera and the second camera.
[0007] As a further improvement of the present invention, a second reflector is further provided on the preset optical path of the first reflected light beam, capable of making the first reflected light beam vertically incident on the lens of the first camera; and a third reflector is further provided on the preset optical path of the second reflected light beam, capable of making the second reflected light beam vertically incident on the lens of the second camera.
[0008] As a further improvement of the present invention, both the first camera and the second camera are CCD cameras.
[0009] As a further improvement of the present invention, an optical power meter is further provided, and the optical power meter is used to measure the power of the second transmitted light beam.
[0010] As a further improvement of the present invention, a working platform is further provided, on which the first beam splitter, the second reflector, the first camera, multiple first reflectors, the second beam splitter, the third reflector and the second camera are respectively mounted through brackets.
[0011] The beneficial effects of the present invention are as follows: Compared with the prior art, ① the laser spot analyzer of the present invention obtains the spot images of the laser beam at different optical paths, and then performs fitting processing and analysis on the spot images to accurately obtain the performance parameters of the laser spot. In other words, the measurement accuracy of the laser spot analyzer is very high, which can well meet the measurement requirements of the laser beam. ② The laser spot analyzer of the present invention not only has a simple and reasonable structure and low production cost, but also can realize the testing of lasers of different wavelengths, and has excellent applicability and versatility. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the partial structure of the laser spot analyzer of the present utility model;
[0013] Figure 2 for Figure 1 The top view schematic diagram of the local structure of the laser spot analyzer is shown.
[0014] The following description is made with reference to the accompanying drawings:
[0015] 1. First beam splitter; 2. First camera; 3. Second beam splitter; 4. Second camera; 5. First reflector; 6. Filter; 7. Second reflector; 8. Third reflector; 9. Optical power meter; 10. Work platform. DETAILED DESCRIPTION
[0016] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0017] Example 1:
[0018] Please see the attached Figure 1 and attached Figure 2As shown, this embodiment 1 provides a laser spot analyzer, which mainly includes a first beam splitter 1, a first camera 2, a reflector assembly, a second beam splitter 3 and a second camera 4, wherein the first beam splitter 1 is used to receive the light beam emitted by the laser and split the laser beam into a first reflected beam RL1 and a first transmitted beam TL1, and the first camera 2 is arranged on a preset optical path of the first reflected beam RL1 to obtain a spot image of the first reflected beam RL1; the reflector assembly is provided with a plurality of first reflectors 5, and the plurality of first reflectors 5 are arranged at intervals on the preset optical path of the first transmitted beam TL1 to lengthen the optical path of the first transmitted beam TL1; the second beam splitter 3 is used to receive the first transmitted beam TL1 and split the first transmitted beam TL1 into a second reflected beam RL2 and a second transmitted beam TL2, and the second camera 4 is arranged on the preset optical path of the second reflected beam RL2 to obtain a spot image of the second reflected beam RL2. It is understandable that, with the laser exit of the laser as a reference, the optical path of the laser beam captured by the second camera 4 is greater than the optical path of the laser beam captured by the first camera 2. The spot analyzer of this embodiment acquires spot images of the laser beam at different optical path lengths, and then performs fitting processing and analysis on the spot images to accurately obtain the performance parameters of the laser spot. In short, the spot analyzer of this embodiment has very high measurement accuracy and can well meet the measurement requirements of laser beams.
[0019] The specific structure of the laser spot analyzer described in this embodiment is described in detail below.
[0020] Please continue to refer to the attached Figure 1 and 2 As shown, in this embodiment 1, the laser spot analyzer is further provided with a working platform 10 and a housing (not shown) provided outside the working platform 10. The first beam splitter 1, the first camera 2, the second beam splitter 3, the second camera 4 and the plurality of first reflectors 5 are respectively mounted on the inner side surface of the working platform 10 via brackets.
[0021] ① Both the first camera 2 and the second camera 4 are CCD cameras, and the lenses of the first camera 2 and the second camera 4 are arranged vertically downward and at a certain distance from the inner side of the work platform 10. In addition, this embodiment also provides filters 6 below the lenses of the first camera 2 and the second camera 4 to reduce the energy of the laser beam, ensuring that the laser energy entering the first camera 2 and the second camera 4 meets the camera damage threshold requirements, effectively preventing the first camera 2 and the second camera 4 from being burned. It can be understood that by providing the filters 6, while effectively improving the safety of the first camera 2 and the second camera 4, it is also conducive to enabling the light spot analyzer to test lasers of different wavelengths, greatly improving the applicability and versatility of the light spot analyzer.
[0022] ② This embodiment does not impose any restrictions on the arrangement of the plurality of first reflectors 5, which is determined based on the laser beam measurement requirements. It is understood that the arrangement of the plurality of first reflectors 5 is determined based on the laser beam optical path requirements, installation space requirements, and other requirements, thereby further improving the applicability and versatility of the spot analyzer.
[0023] Furthermore, in this embodiment 1, a second reflector 7 is provided on the preset optical path of the first reflected light beam RL1, enabling the first reflected light beam RL1 to be perpendicularly incident on the lens of the first camera 2. Furthermore, a third reflector 8 is provided on the preset optical path of the second reflected light beam RL2, enabling the second reflected light beam RL2 to be perpendicularly incident on the lens of the second camera 4. It will be understood that the second reflector 7 and the third reflector 8 are respectively located below the two filters 6, and are respectively mounted on the inner side surface of the work platform 10 via brackets.
[0024] Furthermore, in this embodiment 1, an optical power meter 9 is provided on the inner side of the work platform 10 to measure the power of the second transmitted light beam TL2. Note: The optical power meter 9 is a commonly used optical instrument and an essential tool in optical experiments and optical communications. Therefore, it will not be described in detail here.
[0025] Note: The prefixes "first", "second", etc. in the component names in this specification (such as the first spectrometer, the second spectrometer, etc.) are only for the convenience of description and are not used to limit the scope of implementation of this utility model patent.
[0026] In summary, the laser spot analyzer of the present invention has the advantages of simple and reasonable structure, low production cost, high measurement accuracy, good applicability and versatility, etc., and can well meet the measurement requirements of laser beams.
[0027] In the above description, many specific details are set forth in order to fully understand the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited by the specific implementation disclosed above. At the same time, any person skilled in the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.
Claims
1. A laser spot analyzer, characterized in that: The invention comprises a first beam splitter (1), a first camera (2), a reflector assembly, a second beam splitter (3) and a second camera (4), wherein the first beam splitter (1) is used to split a light beam emitted by a laser into a first reflected light beam and a first transmitted light beam, and the first camera (2) is arranged on a preset optical path of the first reflected light beam to obtain a light spot image of the first reflected light beam; the reflector assembly is provided with a plurality of first reflectors (5), and the plurality of first reflectors (5) are arranged at intervals on the preset optical path of the first transmitted light beam to lengthen the optical path of the first transmitted light beam; the second beam splitter (3) is used to split the first transmitted light beam into a second reflected light beam and a second transmitted light beam, and the second camera (4) is arranged on the preset optical path of the second reflected light beam to obtain a light spot image of the second reflected light beam.
2. The laser spot analyzer according to claim 1, characterized in that: The lenses of the first camera (2) and the second camera (4) are both arranged vertically downward, and filters (6) are respectively arranged below the lenses of the first camera (2) and the second camera (4).
3. The laser spot analyzer according to claim 2, characterized in that: A second reflector (7) is also provided on the preset optical path of the first reflected light beam, capable of causing the first reflected light beam to be vertically incident on the lens of the first camera (2); and a third reflector (8) is also provided on the preset optical path of the second reflected light beam, capable of causing the second reflected light beam to be vertically incident on the lens of the second camera (4).
4. The laser spot analyzer according to claim 1, characterized in that: The first camera (2) and the second camera (4) are both CCD cameras.
5. The laser spot analyzer according to claim 1, characterized in that: An optical power meter (9) is also provided, and the optical power meter (9) is used to measure the power of the second transmitted light beam.
6. The laser spot analyzer according to claim 3, characterized in that: A working platform (10) is also provided, and the first beam splitter (1), the second reflector (7), the first camera (2), a plurality of the first reflectors (5), the second beam splitter (3), the third reflector (8) and the second camera (4) are respectively mounted on the working platform (10) via brackets.