CN213274790U - Multi-incident-angle reflectivity measuring device for large-caliber plane reflector - Google Patents
Multi-incident-angle reflectivity measuring device for large-caliber plane reflector Download PDFInfo
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- CN213274790U CN213274790U CN202022449008.XU CN202022449008U CN213274790U CN 213274790 U CN213274790 U CN 213274790U CN 202022449008 U CN202022449008 U CN 202022449008U CN 213274790 U CN213274790 U CN 213274790U
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Abstract
The utility model belongs to the field of optical thin film element reflectivity measurement, in particular to a large-caliber plane mirror multi-incident angle reflectivity measurement device, which comprises a multi-angle bracket (1); the multi-angle bracket (1) is of a hemispherical structure; a hemispherical groove (2) is formed in the central area of the bottom plane of the multi-angle bracket (1); a plurality of groups of limiting holes (3) for positioning and measuring optical fibers are symmetrically arranged in the multi-angle support (1); the central axes of the limiting holes (3) are intersected at the center of gravity of the bottom plane of the multi-angle support (1); and an incident optical fiber (5) and an emergent optical fiber (6) are respectively and fixedly arranged in the limiting hole (3). The utility model simplifies the measuring device, and the bracket has small size and convenient and fast movement; the measured incident optical fiber and the measured receiving optical fiber are respectively inserted into the symmetrical limiting holes, and the optical fiber is fixed by the locking screw, so that the bracket can be moved to directly measure the reflectivity of the large-caliber plane mirror at any position and at different incident angles.
Description
Technical Field
The utility model belongs to an optics film component reflectivity measurement field especially relates to a many incident angles reflectivity measuring device of heavy-calibre plane mirror.
Background
The large-caliber plane mirror plays the roles of splitting light and changing the propagation direction of a light path in a light path system, and the incident angle of light on the surface of the large-caliber plane mirror can be changed within a wide range from 20 degrees to 70 degrees. The reflectivity of the film layer on the surface of the lens and the distribution uniformity of the film layer are important performance indexes of the large-caliber plane reflector. The energy of the whole light path system is influenced by the reflectivity of the film layer on the surface of the lens; the distribution uniformity of the film layer affects the imaging definition of the optical path system. Therefore, accurate measurement of the reflectivity and the film distribution uniformity of the large-caliber plane mirror is a key link in the manufacturing process.
The reflectivity of the optical thin film element is measured by using a spectrophotometer and accessories thereof, but the sample cell space of the spectrophotometer is limited, so that the reflectivity of the surface of the large-caliber plane mirror cannot be directly measured. The conventional method is to test the reflectivity of the plating-accompanied piece at different positions on the surface of the lens at a plurality of incident angles, and the method has the defects that the difference between the appearance size of the plating-accompanied piece and the appearance size of the large-caliber plane reflector is huge, the optical performance of a film layer in the plating film forming process has larger difference, and further the obvious difference of reflection spectra is caused. Therefore, the measurement result of the plating accompanying sheet cannot accurately reflect the reflectivity index of the large-aperture plane reflector.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's weak point and providing a convenient and fast, can realize the many incident angle reflectivity measuring device of heavy-calibre plane speculum to heavy-calibre plane speculum surface rete optional position reflectivity direct measurement.
For solving the technical scheme, the utility model discloses a realize like this:
a large-caliber plane reflector multi-incident-angle reflectivity measuring device comprises a multi-angle bracket; the multi-angle bracket is of a hemispherical structure; a hemispherical groove is formed in the central area of the bottom plane of the multi-angle bracket; a plurality of groups of limiting holes for positioning the measuring optical fibers are symmetrically arranged in the multi-angle bracket; the central axes of the limiting holes are intersected at the center of gravity of the bottom plane of the multi-angle bracket; and the limiting holes are respectively and fixedly provided with an incident optical fiber and an emergent optical fiber.
As a preferred scheme, the position of the corresponding limiting hole in the multi-angle bracket of the utility model is provided with a threaded hole for fixing the measuring optical fiber; and the central axis of the threaded hole is vertically intersected with the central axis of the limiting hole.
Further, the utility model discloses the head of incident optical fiber and emergent optical fiber is equipped with the step that is used for the location respectively.
The utility model integrates different incident angles on one bracket, simplifies the measuring device, and has small bracket size and convenient movement; the measured incident optical fiber and the measured receiving optical fiber are respectively inserted into the symmetrical limiting holes, and the optical fiber is fixed by the locking screw, so that the bracket can be moved to directly measure the reflectivity of the large-caliber plane mirror at any position and at different incident angles.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of the present invention is not limited to the following description.
Fig. 1 is a schematic sectional view of the internal structure of the present invention.
Fig. 2 is a plan view of the present invention.
In the figure: 1. a multi-angle bracket; 2. a hemispherical groove; 3. a limiting hole; 4. a threaded hole; 5. an incident optical fiber; 6. and an exit optical fiber.
Detailed Description
As shown in the figure, the multi-incident-angle reflectivity measuring device of the large-caliber plane reflector comprises a multi-angle bracket 1; the multi-angle bracket 1 is of a hemispherical structure; a hemispherical groove 2 is formed in the central area of the bottom plane of the multi-angle bracket 1; a plurality of groups of limiting holes 3 for positioning the measuring optical fiber are symmetrically arranged in the multi-angle bracket 1; the central axes of the limiting holes 3 are intersected at the center of gravity of the bottom plane of the multi-angle bracket 1; and an incident optical fiber 5 and an emergent optical fiber 6 are respectively and fixedly arranged in the limiting hole 3.
The utility model is provided with a threaded hole 4 for fixing the measuring optical fiber at the position corresponding to the limiting hole 3 in the multi-angle bracket 1; the central axis of the threaded hole 4 is vertically intersected with the central axis of the limiting hole 3.
The utility model discloses the head of incident optical fiber 5 and outgoing optical fiber 6 is equipped with the step that is used for the location respectively.
When specifically designing, the utility model discloses a multi-angle support 1 and measurement optic fibre. The number of the measuring optical fibers is two, one is an incident optical fiber 5, the other is a receiving optical fiber 6, and the head parts of the incident optical fiber 5 and the receiving optical fiber 6 are provided with steps for positioning; the multi-angle support 1 is hemispherical, and a hemispherical groove 2 is formed in the center of the bottom plane of the multi-angle support 1. The hemispherical groove 2 has the function of reserving enough space to ensure that light emitted by the incident optical fiber 5 is not shielded and is completely received by the receiving optical fiber 6 after being reflected by the surface of the reflector. A plurality of groups of symmetrical limiting holes 3 for positioning the measuring optical fibers are formed in the multi-angle support 1, and all the symmetrical limiting holes 3 are used for limiting and mounting the incident optical fibers 5 and the emergent optical fibers 6; the multi-angle support 1 is internally provided with a plurality of pairs of threaded holes 4 for fixing the measuring optical fiber, and the axes of the threaded holes 4 are vertically intersected with the axis of the limiting hole 3. The threaded hole 4 locks and fixes the inserted measuring optical fiber through a locking screw.
The angles of the multiple pairs of symmetrical limiting holes 3 are determined according to the working angle required by the large-caliber plane reflector, and the central axes of all the limiting holes 3 are intersected at the center of gravity of the bottom plane of the multi-angle support 1 so as to ensure that the incident light path and the emergent light path of the optical fiber installed in the symmetrical limiting holes are coaxial in mirror image.
The specific measurement process is that the incident optical fiber 5 and the emergent optical fiber 6 are respectively inserted into the limiting holes 3 of the multi-angle support 1, wherein angles need to be measured, and after the incident optical fiber 5 and the receiving optical fiber 6 are inserted, the measuring optical fiber is fixed by locking screws through corresponding fixed threaded holes 4. After the measuring optical fiber is fixed, the reflectivity measuring device can be conveniently moved to measure the reflectivity at any position on the surface of the large-caliber reflector. The measuring cost is low, the speed is high, and the measured data is accurate and reliable.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A large-caliber plane reflector multi-incident-angle reflectivity measuring device comprises a multi-angle support (1); the multi-angle bracket is characterized in that the multi-angle bracket (1) is of a hemispherical structure; a hemispherical groove (2) is formed in the central area of the bottom plane of the multi-angle bracket (1); a plurality of groups of limiting holes (3) for positioning and measuring optical fibers are symmetrically arranged in the multi-angle support (1); the central axes of the limiting holes (3) are intersected at the center of gravity of the bottom plane of the multi-angle support (1); and an incident optical fiber (5) and an emergent optical fiber (6) are respectively and fixedly arranged in the limiting hole (3).
2. The apparatus for measuring reflectivity at multiple incident angles of a large-aperture plane mirror according to claim 1, wherein: a threaded hole (4) for fixing a measuring optical fiber is formed in the position, corresponding to the limiting hole (3), in the multi-angle bracket (1); the central axis of the threaded hole (4) is vertically intersected with the central axis of the limiting hole (3).
3. The apparatus for measuring reflectivity at multiple incident angles of a large-aperture plane mirror according to claim 2, wherein: the head parts of the incident optical fiber (5) and the emergent optical fiber (6) are respectively provided with a step for positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022449008.XU CN213274790U (en) | 2020-10-29 | 2020-10-29 | Multi-incident-angle reflectivity measuring device for large-caliber plane reflector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022449008.XU CN213274790U (en) | 2020-10-29 | 2020-10-29 | Multi-incident-angle reflectivity measuring device for large-caliber plane reflector |
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| CN213274790U true CN213274790U (en) | 2021-05-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544148A (en) * | 2022-02-18 | 2022-05-27 | 深圳精智达技术股份有限公司 | Device for measuring optical data of light emitting source at multiple angles |
| CN114544148B (en) * | 2022-02-18 | 2024-04-26 | 深圳精智达技术股份有限公司 | Device for measuring optical data of luminous source at multiple angles |
-
2020
- 2020-10-29 CN CN202022449008.XU patent/CN213274790U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544148A (en) * | 2022-02-18 | 2022-05-27 | 深圳精智达技术股份有限公司 | Device for measuring optical data of light emitting source at multiple angles |
| CN114544148B (en) * | 2022-02-18 | 2024-04-26 | 深圳精智达技术股份有限公司 | Device for measuring optical data of luminous source at multiple angles |
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