CN110703451A - System and method for installing and adjusting beam splitter prism - Google Patents
System and method for installing and adjusting beam splitter prism Download PDFInfo
- Publication number
- CN110703451A CN110703451A CN201910989258.1A CN201910989258A CN110703451A CN 110703451 A CN110703451 A CN 110703451A CN 201910989258 A CN201910989258 A CN 201910989258A CN 110703451 A CN110703451 A CN 110703451A
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- beam splitter
- adjusting
- prism
- splitter prism
- reflector
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/10—Beam splitting or combining systems
- G02B27/12—Beam splitting or combining systems operating by refraction only
- G02B27/126—The splitting element being a prism or prismatic array, including systems based on total internal reflection
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
Abstract
The invention discloses a system and a method for assembling and adjusting a beam splitter prism, relates to the technical field of optical property testing, and aims to solve the technical problems that in the prior art, methods such as an adjusting frame and machining guarantee adopted by the assembling and adjusting of the beam splitter prism have low precision and long assembling and adjusting period, and a plurality of beam splitter prisms cannot be simultaneously assembled and adjusted in real time, and the technical scheme of the invention is as follows: comprises an angle gauge, a prism adjusting seat, a reflector and a base; the goniometer comprises a self-collimating tube and an air flotation rotating platform, the base comprises a side plate and a bottom plate, the base is fixed on a carrying surface of the air flotation rotating platform through the bottom plate, a light splitting prism to be adjusted is fixed on the bottom plate through a prism adjusting seat, a through hole is formed in the middle of the side plate, the reflector is fixed on the side plate, and the optical axis of the self-collimating tube is perpendicular to the surface of the reflector and penetrates through the axis of the through hole.
Description
Technical Field
The invention relates to the technical field of optical property testing, in particular to a system and a method for assembling and adjusting a beam splitter prism.
Background
With the increasing requirements on the optical system, the application of the light splitting system is more and more extensive, and a light splitting prism is often adopted for light splitting, so that the direction of a light path is effectively changed, and the volume of the optical system is shortened. At present, a beam splitter prism is mostly applied to the fields of measuring instruments, laser vibration measurement, polarization optics and the like, and the beam splitter prism is generally installed and adjusted by methods such as a prism adjusting frame and machining guarantee.
Disclosure of Invention
In order to solve the technical problems that in the prior art, methods such as an adjusting frame and machining guarantee adopted by the adjustment of the beam splitter prism have low precision and long adjustment period, and the simultaneous adjustment of a plurality of beam splitter prisms cannot be monitored in real time, the technical scheme of the invention is as follows:
the invention relates to a system for installing and adjusting a beam splitter prism, which comprises an angle gauge, a prism adjusting seat, a reflecting mirror and a base; the goniometer comprises a self-collimating tube and an air flotation rotating platform, the base comprises a side plate and a bottom plate, the base is fixed on a carrying surface of the air flotation rotating platform through the bottom plate, a light splitting prism to be adjusted is fixed on the bottom plate through a prism adjusting seat, a through hole is formed in the middle of the side plate, the reflector is fixed on the side plate, and the optical axis of the self-collimating tube is perpendicular to the surface of the reflector and penetrates through the axis of the through hole.
Further, the prism adjusting seat comprises a shell, an adjusting ball, a locking pressing ring, a baffle and a guide nail; the four side surfaces of the shell are provided with first through holes, and the top surface of the shell is provided with first fixing grooves for mounting adjusting balls; a second fixing groove for mounting the beam splitter prism is formed in the bottom of the adjusting ball, a threaded hole is formed in the top of the adjusting ball, four second through holes are uniformly formed in the side face of the adjusting ball, and the second through holes are communicated with the second fixing groove and are coaxial with the first through holes; the locking pressing ring is fixed at the notch of the first fixing groove, the bottom of the locking pressing ring is abutted against the adjusting ball, and the middle of the locking pressing ring is provided with a limiting hole; the guide nail penetrates through the threaded hole to be fixed with the adjusting ball and moves in a limiting hole of the locking pressing ring; the baffle plate is of a circular structure and is fixed with the edge of a notch of the second fixing groove of the adjusting ball.
Furthermore, the first fixing groove comprises an upper cylindrical part and a lower hemispherical part, the inner side surface of the cylindrical part is provided with internal threads, and the size of the hemispherical part corresponds to that of the adjusting ball; the outer side surface of the locking pressing ring is provided with an external thread, the bottom of the locking pressing ring is a spherical concave surface, and the size of the spherical concave surface corresponds to that of the adjusting ball.
The invention also discloses a method for assembling and adjusting the beam splitter prism, which comprises the following steps:
mounting a beam splitter prism, placing the beam splitter prism in an adjusting ball, fixing a baffle sheet to the adjusting ball through a screw, placing the adjusting ball in a prism adjusting seat, fixing a guide nail to the adjusting ball, pre-fixing a locking pressing ring to the prism adjusting seat, fixing the prism adjusting seat on a bottom plate, mounting a reflector on a mounting reference surface of a side plate, and fixing the bottom plate on an air flotation rotating table of an angle measuring instrument;
determining an installation and adjustment reference, adjusting an air floatation rotating table of the goniometer, enabling the optical axis of the self-collimating tube to be perpendicular to the surface of the reflector and to penetrate through the axis of the through hole of the side plate, finding an image of the reflector in a software operation interface of the goniometer, and setting the image of the reflector as an installation and adjustment reference image;
and thirdly, adjusting the position of the beam splitter prism, taking down the reflector, enabling the optical axis of the self-collimating tube to pass through the beam splitter prism, adjusting the position of the adjusting ball by adjusting the guide pin until the image reflected by the mirror surface of the beam splitter prism is superposed with the installation and adjustment reference image, enabling the mirror surface of the beam splitter prism to be parallel to the reference surface, enabling the angle position jump to accord with a set value, determining the position of the beam splitter prism as the position capable of meeting the requirements of an optical system, and fastening and locking the pressing ring to fix the position of the adjusting ball.
Further, the third step is followed by the following steps:
step four, installing a second beam splitter prism, installing the second beam splitter prism into a prism adjusting seat according to the installation mode in the step one, and installing the prism adjusting seat on the bottom plate in the 90-degree direction of the first beam splitter prism;
and fifthly, adjusting the position of a second beam splitter prism, wherein the position adjustment of the second beam splitter prism takes the position of the first beam splitter prism in the third step as a reference, the light of the angle measuring instrument passes through the center of the first beam splitter prism, the direction of a light path is changed by 90 degrees to reach the second beam splitter prism, mirror surface jumping of the first beam splitter prism and the second beam splitter prism can be monitored in real time, a guide nail is adjusted to adjust and adjust the position of the adjusting ball, the image displayed by mirror surface reflection of the first beam splitter prism is overlapped with the reference image of the first beam splitter prism, the angle position jumping accords with a set value, the position of the first beam splitter prism is determined to be the position capable of meeting the requirements of an optical system, and a locking pressing ring is fastened to fix.
Furthermore, in the third step and the fifth step, the angle position jump is less than or equal to 10 percent. The position of the beam splitting prism in the third step and the fifth step reaches a set value, namely the position required by the optical system refers to: in the light splitting system, the position of the light splitting prism has a large influence on the light direction, and the imaging quality of the system is directly influenced, so that the requirement on the angular position of the light splitting prism is high, and the position angle is generally required to be less than 1'.
And when the three or more splitting prisms are in three groups or more, continuously adjusting the third or more splitting prisms, and repeating the fourth step and the fifth step in sequence when the third or more splitting prisms are adjusted.
Compared with the prior art, the system and the method for installing and adjusting the beam splitting prism have the beneficial effects that:
the system and the method for assembling and adjusting the beam splitter prism solve the problems that the prior methods for assembling and adjusting the beam splitter prism, such as an adjusting frame, machining guarantee and the like, have low precision and long assembling and adjusting period and cannot monitor the simultaneous assembling and adjusting of a plurality of beam splitter prisms in real time, improve the assembling and adjusting efficiency and precision of the beam splitter prism of a high-precision beam splitter system, reduce the assembling and adjusting cost, well ensure the angular position (less than or equal to 10) of the beam splitter prism, realize the real-time monitoring of the mirror surface parallelism of the beam splitter prisms, improve the assembling and adjusting efficiency and precision of the beam splitter prism of the high-precision beam splitter system and reduce the assembling and adjusting cost.
Drawings
FIG. 1 is a schematic diagram of a system for tuning a beam splitting prism according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a perspective view of a prism adjustment mount of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
fig. 5 is an exploded view of fig. 3.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, a system for assembling and adjusting a beam splitter prism in the present invention includes an angle meter 1, a prism adjusting base 2, a reflector 3 and a base 4; the goniometer 1 comprises a self-collimating tube 1a and an air-flotation rotating platform 1b, a base 4 comprises a side plate 4a and a bottom plate 4b, the base 4 is fixed on an object carrying surface of the air-flotation rotating platform 1b through the bottom plate 4b, a light splitting prism 5 to be assembled and adjusted is fixed on the bottom plate 4b through a prism adjusting seat 2, a through hole is formed in the middle of the side plate 4a, a reflector 3 is fixed on the side plate 4a, and an optical axis 10 of the self-collimating tube 1a is perpendicular to the surface of the reflector 3 and penetrates through the axis of the through hole.
As shown in fig. 3-5, the prism adjusting base 2 comprises a housing 11, an adjusting ball 6, a locking pressing ring 7, a baffle plate 8 and a guide pin 9; the four side surfaces of the shell 11 are provided with first through holes 11a, and the top surface of the shell is provided with first fixing grooves 11b for mounting adjusting balls; a second fixing groove 6b for mounting the beam splitter prism is formed in the bottom of the adjusting ball 6, a threaded hole 6c is formed in the top of the adjusting ball, four second through holes 6a are uniformly formed in the side face of the adjusting ball, the second through holes 6a are communicated with the second fixing groove 6b, and the second through holes 6a are coaxial with the first through holes 11 a; the locking pressing ring 7 is fixed at the notch of the first fixing groove 6b, the bottom of the locking pressing ring is abutted against the adjusting ball 6, and the middle of the locking pressing ring is provided with a limiting hole 7 a; the guide nail 9 passes through the threaded hole 6c to be fixed with the adjusting ball 6 and moves in the limiting hole 7a of the locking pressing ring 7; the baffle plate 8 is of a circular structure and is fixed with the edge of the notch of the second fixing groove 6b of the adjusting ball 6.
The first fixing groove 11b comprises an upper cylindrical part and a lower hemispherical part, internal threads are formed in the inner side face of the cylindrical part, and the size of the hemispherical part corresponds to that of the adjusting ball; the outer side surface of the locking pressing ring 7 is provided with an external thread, the bottom of the locking pressing ring is a spherical concave surface, and the size of the spherical concave surface corresponds to that of the adjusting ball 6. The locking pressing ring 7 is connected with the first fixing groove 11b through internal and external threads, the bottom of the locking pressing ring 7 is abutted to the adjusting ball 6, and the locking pressing ring 7 moves downwards through rotation to further fasten the adjusting ball 6.
The invention also provides a method for assembling and adjusting the beam splitter prism 5, which comprises the following steps:
firstly, a beam splitter prism 5 is installed, the beam splitter prism 5 is placed in an adjusting ball 6, a blocking piece 8 is fixed on the adjusting ball 6 through a screw, the adjusting ball 6 is placed in a prism adjusting seat 2, a guide nail 9 is fixed on the prism adjusting seat 2, a locking pressing ring 7 is screwed into the prism adjusting seat 2, the prism adjusting seat 2 is fixed on a bottom plate 4b, a reflecting mirror 3 is installed on an installation reference surface of a side plate 4a, and the bottom plate 4b is fixed on an air floatation rotating table 1b of an angle measuring instrument 1.
And step two, determining an installation and adjustment reference, adjusting an air floatation rotating platform 1b of the goniometer 1, enabling an optical axis 10 of a self-collimating tube 1a to be perpendicular to the surface of the reflector 3 and to penetrate through the axis of a through hole of the side plate 4a, finding an image of the reflector 3 in a software operation interface of the goniometer 1, and setting the image of the reflector 3 as an installation and adjustment reference image.
And step three, adjusting the position of the beam splitter prism 5, taking down the reflector 3, enabling the optical axis 10 of the self-collimating tube 1a to pass through the beam splitter prism 5, adjusting the guide nail 9 to adjust the position of the adjusting ball 6 until the image reflected by the mirror surface of the beam splitter prism 5 is superposed with the installation and adjustment reference image, enabling the mirror surface of the beam splitter prism 5 to be parallel to the reference surface, enabling the angle position jump to accord with a set value, determining the position of the beam splitter prism 5 to be the position capable of meeting the requirements of an optical system, fixing the position of the adjusting ball 6 by rotating the locking pressing ring 7, further completing the installation and adjustment of the beam splitter prism 5, and assembling and using the beam splitter prism 5 and the prism adjusting seat 2 in an assembly form as a part.
The third step also comprises the following steps:
step four, installing a second beam splitter prism 5, installing the second beam splitter prism 5 into the prism adjusting seat 2 according to the installation mode in the step one, and installing the prism adjusting seat 2 on the bottom plate 4b at the 90-degree direction of the first beam splitter prism 5;
and fifthly, adjusting the position of a second beam splitter prism 5, wherein the position of the first beam splitter prism 5 in the third step is used as a reference for adjusting the position of the second beam splitter prism 5, the light of the angle measuring instrument 1 passes through the center of the first beam splitter prism 5, the direction of a light path is changed by 90 degrees to reach the second beam splitter prism 5, mirror bounce of the first beam splitter prism 5 and the second beam splitter prism 5 can be monitored in real time, a guide nail 9 is adjusted to adjust and adjust the position of an adjusting ball 6, an image displayed by mirror reflection of the first beam splitter prism 5 is superposed with a reference image of the first beam splitter prism 5, the angle position bounce accords with a set value, the position of the first beam splitter prism 5 is determined as a position capable of meeting the requirements of an optical system, and a locking pressing ring 7 is rotated to fix the position.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A system for installing and adjusting a beam splitter prism is characterized by comprising an angle gauge, a prism adjusting seat, a reflector and a base; the goniometer comprises a self-collimating tube and an air flotation rotating platform, the base comprises a side plate and a bottom plate, the base is fixed on a carrying surface of the air flotation rotating platform through the bottom plate, a light splitting prism to be adjusted is fixed on the bottom plate through a prism adjusting seat, a through hole is formed in the middle of the side plate, the reflector is fixed on the side plate, and the optical axis of the self-collimating tube is perpendicular to the surface of the reflector and penetrates through the axis of the through hole.
2. The system for assembling and adjusting a beam splitter prism as claimed in claim 1, wherein the prism adjusting base comprises a housing, an adjusting ball, a locking pressing ring, a baffle plate and a guide pin; the four side surfaces of the shell are provided with first through holes, and the top surface of the shell is provided with first fixing grooves for mounting adjusting balls; a second fixing groove for mounting the beam splitter prism is formed in the bottom of the adjusting ball, a threaded hole is formed in the top of the adjusting ball, four second through holes are uniformly formed in the side face of the adjusting ball, and the second through holes are communicated with the second fixing groove and are coaxial with the first through holes; the locking pressing ring is fixed at the notch of the first fixing groove, the bottom of the locking pressing ring is abutted against the adjusting ball, and the middle of the locking pressing ring is provided with a limiting hole; the guide nail penetrates through the threaded hole to be fixed with the adjusting ball and moves in a limiting hole of the locking pressing ring; the baffle plate is of a circular structure and is fixed with the edge of a notch of the second fixing groove of the adjusting ball.
3. The system for assembling and adjusting a beam splitter prism as claimed in claim 2, wherein the first fixing groove comprises an upper cylindrical portion and a lower hemispherical portion, the inner side surface of the cylindrical portion is internally threaded, and the hemispherical portion has a size corresponding to that of the adjusting ball; the outer side surface of the locking pressing ring is provided with an external thread, the bottom of the locking pressing ring is a spherical concave surface, and the size of the spherical concave surface corresponds to that of the adjusting ball.
4. A method for assembling a beam splitting prism, comprising the steps of:
mounting a beam splitter prism, placing the beam splitter prism in an adjusting ball, fixing a baffle sheet to the adjusting ball through a screw, placing the adjusting ball in a prism adjusting seat, fixing a guide nail to the adjusting ball, pre-fixing a locking pressing ring to the prism adjusting seat, fixing the prism adjusting seat on a bottom plate, mounting a reflector on a mounting reference surface of a side plate, and fixing the bottom plate on an air flotation rotating table of an angle measuring instrument;
determining an installation and adjustment reference, adjusting an air floatation rotating table of the goniometer, enabling the optical axis of the self-collimating tube to be perpendicular to the surface of the reflector and to penetrate through the axis of the through hole of the side plate, finding an image of the reflector in a software operation interface of the goniometer, and setting the image of the reflector as an installation and adjustment reference image;
and thirdly, adjusting the position of the beam splitter prism, taking down the reflector, enabling the optical axis of the self-collimating tube to pass through the beam splitter prism, adjusting the position of the adjusting ball by adjusting the guide pin until the image reflected by the mirror surface of the beam splitter prism is superposed with the installation and adjustment reference image, enabling the mirror surface of the beam splitter prism to be parallel to the reference surface, enabling the angle position jump to accord with a set value, determining the position of the beam splitter prism as the position capable of meeting the requirements of an optical system, and fastening and locking the pressing ring to fix the position of the adjusting ball.
5. The method for assembling a splitting prism according to claim 4, further comprising the following step after step three:
step four, installing a second beam splitter prism, installing the second beam splitter prism into a prism adjusting seat according to the installation mode in the step one, and installing the prism adjusting seat on the bottom plate in the 90-degree direction of the first beam splitter prism;
and fifthly, adjusting the position of a second beam splitter prism, wherein the position adjustment of the second beam splitter prism takes the position of the first beam splitter prism in the third step as a reference, the light of the angle measuring instrument passes through the center of the first beam splitter prism, the direction of a light path is changed by 90 degrees to reach the second beam splitter prism, mirror surface jumping of the first beam splitter prism and the second beam splitter prism can be monitored in real time, a guide nail is adjusted to adjust and adjust the position of the adjusting ball, the image displayed by mirror surface reflection of the first beam splitter prism is overlapped with the reference image of the first beam splitter prism, the angle position jumping accords with a set value, the position of the first beam splitter prism is determined to be the position capable of meeting the requirements of an optical system, and a locking pressing ring is fastened to fix.
6. A method for assembling a splitting prism as claimed in claim 5, characterized in that in step three and step five the angular position run-out is ≦ 10 ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910989258.1A CN110703451B (en) | 2019-10-17 | 2019-10-17 | System and method for installing and adjusting beam splitter prism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910989258.1A CN110703451B (en) | 2019-10-17 | 2019-10-17 | System and method for installing and adjusting beam splitter prism |
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| Publication Number | Publication Date |
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| CN110703451A true CN110703451A (en) | 2020-01-17 |
| CN110703451B CN110703451B (en) | 2022-02-11 |
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| CN201910989258.1A Active CN110703451B (en) | 2019-10-17 | 2019-10-17 | System and method for installing and adjusting beam splitter prism |
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| EP2068178A2 (en) * | 2007-12-03 | 2009-06-10 | Canon Kabushiki Kaisha | A prism unit and a projection image display apparatus |
| CN201926803U (en) * | 2010-12-31 | 2011-08-10 | 中国科学院西安光学精密机械研究所 | Assembling and regulating tool for volume production of split-beam system |
| CN202771092U (en) * | 2012-07-31 | 2013-03-06 | 上海微电子装备有限公司 | Beam-splitter prism regulating mechanism |
| CN103226234A (en) * | 2013-04-01 | 2013-07-31 | 西安应用光学研究所 | Method for adjusting optical axis of Pechan prism |
| CN106597651A (en) * | 2017-01-11 | 2017-04-26 | 肇庆学院 | Prism-surface-reflection-based variable-zoom dimming apparatus |
| CN107748426A (en) * | 2017-10-26 | 2018-03-02 | 中国科学院光电研究院 | A kind of prism angle debugging device and Method of Adjustment |
-
2019
- 2019-10-17 CN CN201910989258.1A patent/CN110703451B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2068178A2 (en) * | 2007-12-03 | 2009-06-10 | Canon Kabushiki Kaisha | A prism unit and a projection image display apparatus |
| CN201926803U (en) * | 2010-12-31 | 2011-08-10 | 中国科学院西安光学精密机械研究所 | Assembling and regulating tool for volume production of split-beam system |
| CN202771092U (en) * | 2012-07-31 | 2013-03-06 | 上海微电子装备有限公司 | Beam-splitter prism regulating mechanism |
| CN103226234A (en) * | 2013-04-01 | 2013-07-31 | 西安应用光学研究所 | Method for adjusting optical axis of Pechan prism |
| CN106597651A (en) * | 2017-01-11 | 2017-04-26 | 肇庆学院 | Prism-surface-reflection-based variable-zoom dimming apparatus |
| CN107748426A (en) * | 2017-10-26 | 2018-03-02 | 中国科学院光电研究院 | A kind of prism angle debugging device and Method of Adjustment |
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| CN110703451B (en) | 2022-02-11 |
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Address after: 650000 workshop 102, No. 5, infrared Road, economic development zone, Kunming area, China (Yunnan) pilot Free Trade Zone, Kunming, Yunnan Patentee after: Yunnan North Optical Technology Co.,Ltd. Address before: 655000 Qujing economic and Technological Development Zone, Yunnan Patentee before: YUNNAN KIRO-CH PHOTONICS Co.,Ltd. |