CN104483740A - Coaxial lens precision axis positioning method - Google Patents
Coaxial lens precision axis positioning method Download PDFInfo
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- CN104483740A CN104483740A CN201410671103.0A CN201410671103A CN104483740A CN 104483740 A CN104483740 A CN 104483740A CN 201410671103 A CN201410671103 A CN 201410671103A CN 104483740 A CN104483740 A CN 104483740A
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- axicon
- internal focusing
- focusing telescope
- cross hair
- light source
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/003—Alignment of optical elements
- G02B7/004—Manual alignment, e.g. micromanipulators
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Telescopes (AREA)
Abstract
The invention discloses a coaxial lens precision axis positioning method. The method is based on the reflective imaging principle, the iteration self-collimation is performed on the front surface and the back surface of a coaxial lens through cone light emitted by an internal focusing telescope by the reference transfer, rough adjusting and fine adjusting methods, and finally the axis of the coaxial lens is positioned. The method has the beneficial effects that the axis positioning accuracy is finally changed into the measuring accuracy of the internal focusing telescope, namely that the axis positioning accuracy is consistent with the accuracy of the internal focusing telescope, so the accuracy of the positioned optical axis of the coaxial lens is guaranteed; the axes of the coaxial lens with different calibers and different curvature radiuses can be accurately positioned, and the universality and practicality are higher.
Description
Technical field
The present invention relates to optical engineering technical field, specifically, is the accurate axis fixation method of a kind of axicon.
Background technology
At present, known lens axis fixation method is datum hole by lens element being assembled to machining, reference field ensures, or is collimated by near field and realize dead axle, makes the limited precision of lens dead axle.In addition, the focometer on market and centrescope also can only realize short-radius, small-bore axicon dead axle, operation inconvenience, and cannot promote the use of the accurate dead axle of the polymorphic type axicon in different bore, different curvature radius.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide the accurate axis fixation method of a kind of axicon, the method utilizes the principle based on catoptric imaging, utilize telescope to go out pencil light and iteration autocollimation is carried out to lens front and rear surfaces, realize axicon dead axle, ensure that the accuracy of the axicon optical axis made.
For achieving the above object, the present invention states the accurate axis fixation method of a kind of axicon, it is characterized in that carrying out according to following steps:
Step 1: by treating that the axicon of dead axle is placed on a platform, set up visible ray collimated light source on the right side of axicon, the attitude of adjustment visible ray collimated light source, the luminous point that axicon front and rear surfaces is reflected back overlaps with the outlet of visible ray collimated light source;
Step 2: the platform on the left of axicon sets up one piece of standard mirror, the attitude of adjustment standard mirror, what the luminous point that standard mirror surface reflection is returned exported with visible ray collimated light source overlaps;
Step 3: the platform on the left of standard mirror sets up an internal focusing telescope, internal focusing telescope is focused, the cross hair picture picture that the standard mirror of making is reflected back overlaps with internal focusing telescope autocollimation cross hair, then internal focusing telescope is focused and translation, its autocollimation cross hair is overlapped substantially with visible ray collimated light source export center, so far completes coarse adjustment;
Step 4: remove standard mirror, internal focusing telescope is focused, the cross hair picture that axicon front and rear surfaces is reflected back is in the visual field of internal focusing telescope;
Step 5: the adjustment translation of internal focusing telescope and corner or adjust translation and the corner of axicon, the cross hair picture that axicon front and rear surfaces is reflected back all overlaps with the intrinsic autocollimation cross hair in internal focusing telescope, namely internal focusing telescope axis is coupled with coaxial lens axis, thus realizes axicon dead axle.
This method is based on the principle of catoptric imaging, by the mode of datum tool, coarse adjustment and accurate adjustment, utilize telescope to go out pencil light and iteration autocollimation is carried out to lens front and rear surfaces, finally realize axicon dead axle, dead axle precision is finally transitioned into the measuring accuracy of internal focusing telescope, namely lens dead axle precision internal focusing telescope precision is consistent.The method also can realize the dead axle of the type element such as other such as plano-convex lens, plano-concave lens, biconcave lens, meniscus shaped lens.
Remarkable result of the present invention is: dead axle precision is finally transitioned into the measuring accuracy of internal focusing telescope by the present invention, and namely lens dead axle precision internal focusing telescope precision is consistent, ensure that the accuracy of the axicon optical axis made; The accurate dead axle of axicon of different bore, different curvature radius can be realized, there is very high versatility and practicality.
Accompanying drawing explanation
Fig. 1 is benchmark of the present invention erection schematic diagram;
Fig. 2 is axicon dead axle schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention and principle of work are described in further detail.
See accompanying drawing 1-accompanying drawing 2, the accurate axis fixation method of a kind of axicon, is characterized in that carrying out according to following steps:
Step 1: as shown in Figure 1, to treat that the axicon 3 of dead axle is placed on a platform, on the right side of axicon 3, set up visible ray collimated light source 4, the attitude of adjustment visible ray collimated light source 4, the luminous point that axicon 3 front and rear surfaces is reflected back overlaps with the outlet of visible ray collimated light source 4;
Step 2: the platform on the left of axicon 3 sets up one piece of standard mirror 2, as shown in Figure 1, the attitude of adjustment standard mirror 2, the luminous point that standard mirror 2 surface reflection is returned overlaps with the outlet of visible ray collimated light source 4;
Step 3: the platform on the left of standard mirror 2 sets up an internal focusing telescope 1, as shown in Figure 1, internal focusing telescope 1 is focused, the cross hair picture picture that standard mirror 2 is reflected back overlaps with internal focusing telescope 1 autocollimation cross hair, then internal focusing telescope 1 is focused and translation, its autocollimation cross hair is overlapped substantially with visible ray collimated light source 4 export center, so far completes coarse adjustment;
In this example, described internal focusing telescope adopts NWJ-3 type internal focusing telescope, and it has near field collimation and far field alignment function, joins external CCD and substitutes naked-eye observation.Its main performance index parameter: autocollimation precision and angle measurement accuracy are better than 6 ", measurable angle range about 3 °.
Step 4: remove standard mirror 2, as shown in Figure 2, focuses to internal focusing telescope 1, makes cross hair picture that axicon 3 front and rear surfaces is reflected back in the visual field of internal focusing telescope 1;
Step 5: the fine setting translation of internal focusing telescope 1 and corner or finely tune translation and the corner of axicon 3, the cross hair picture that axicon 3 front and rear surfaces is reflected back all overlaps with the intrinsic autocollimation cross hair in internal focusing telescope 1, namely internal focusing telescope 1 axis is coupled with axicon 3 optical axis, namely the cone spire point of internal focusing telescope 1 outgoing overlaps with the center of curvature of axicon 3 front and rear surfaces respectively, this position is unique, so far the axis of internal focusing telescope 1 is coupled with the optical axis of lens coaxial 3, thus realizes axicon 3 dead axle.
Axicon 3 front and rear surfaces normal is with or without several, but front and rear surfaces is pointed to consistent normal and had and only only have one, be i.e. lens axis, therefore just can realize axicon 3 dead axle by single internal focusing telescope 1.This programme is based on optical imaging concept, adopt the method for cone optical alignment curved surface and parallel optical alignment plane, by internal focusing telescope 1, and internal focusing telescope 1 is focused, make internal focusing telescope 1 go out pencil light and iteration autocollimation is carried out to axicon 3 front and rear surfaces, finally carry out axicon 3 dead axle.
Claims (1)
1. the accurate axis fixation method of axicon, is characterized in that carrying out according to following steps:
Step 1: will treat that the axicon (3) of dead axle is placed on a platform, at axicon (3) right side erection visible ray collimated light source (4), the attitude of adjustment visible ray collimated light source (4), the luminous point that axicon (3) front and rear surfaces is reflected back overlaps with the outlet of visible ray collimated light source (4);
Step 2: erection one piece of standard mirror (2) on the platform in axicon (3) left side, the attitude of adjustment standard mirror (2), the luminous point that standard mirror (2) surface reflection is returned overlaps with the outlet of visible ray collimated light source (4);
Step 3: an erection internal focusing telescope (1) on the platform in standard mirror (2) left side, internal focusing telescope (1) is focused, the cross hair picture picture that standard mirror (2) is reflected back overlaps with internal focusing telescope (1) autocollimation cross hair, then internal focusing telescope (1) is focused and translation, its autocollimation cross hair is overlapped substantially with visible ray collimated light source (4) export center;
Step 4: remove standard mirror (2), focuses to internal focusing telescope (1), makes cross hair picture that axicon (3) front and rear surfaces is reflected back in the visual field of internal focusing telescope (1);
Step 5: translation and the corner of adjustment internal focusing telescope (1) or adjust translation and the corner of axicon (3), the cross hair picture that axicon (3) front and rear surfaces is reflected back all overlaps with the intrinsic autocollimation cross hair in internal focusing telescope (1), namely internal focusing telescope (1) axis is coupled with axicon (3) optical axis, thus realizes axicon (3) dead axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671103.0A CN104483740B (en) | 2014-11-20 | 2014-11-20 | Axicon precision axis fixation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671103.0A CN104483740B (en) | 2014-11-20 | 2014-11-20 | Axicon precision axis fixation method |
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| Publication Number | Publication Date |
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| CN104483740A true CN104483740A (en) | 2015-04-01 |
| CN104483740B CN104483740B (en) | 2017-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410671103.0A Expired - Fee Related CN104483740B (en) | 2014-11-20 | 2014-11-20 | Axicon precision axis fixation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471234A (en) * | 2019-01-04 | 2019-03-15 | 长春博信光电子有限公司 | A kind of jig for balsaming lens, positioning gluing method |
Citations (5)
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| US20080062518A1 (en) * | 2006-08-28 | 2008-03-13 | Tamron Co., Ltd. | Optical device, imaging device, and electronic device |
| CN101539656A (en) * | 2008-03-19 | 2009-09-23 | 株式会社三丰 | Optical unit and measuring instrument |
| CN102538689A (en) * | 2011-12-29 | 2012-07-04 | 中国科学院上海光学精密机械研究所 | Centering and locating device of optical system and using method thereof |
| CN102937738A (en) * | 2012-11-20 | 2013-02-20 | 中国科学院西安光学精密机械研究所 | System and method for accurately positioning optical axis of off-axis aspheric reflector |
| CN103345073A (en) * | 2013-06-27 | 2013-10-09 | 中国科学院西安光学精密机械研究所 | single-lens optical axis positioning device and method |
-
2014
- 2014-11-20 CN CN201410671103.0A patent/CN104483740B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080062518A1 (en) * | 2006-08-28 | 2008-03-13 | Tamron Co., Ltd. | Optical device, imaging device, and electronic device |
| CN101539656A (en) * | 2008-03-19 | 2009-09-23 | 株式会社三丰 | Optical unit and measuring instrument |
| CN102538689A (en) * | 2011-12-29 | 2012-07-04 | 中国科学院上海光学精密机械研究所 | Centering and locating device of optical system and using method thereof |
| CN102937738A (en) * | 2012-11-20 | 2013-02-20 | 中国科学院西安光学精密机械研究所 | System and method for accurately positioning optical axis of off-axis aspheric reflector |
| CN103345073A (en) * | 2013-06-27 | 2013-10-09 | 中国科学院西安光学精密机械研究所 | single-lens optical axis positioning device and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471234A (en) * | 2019-01-04 | 2019-03-15 | 长春博信光电子有限公司 | A kind of jig for balsaming lens, positioning gluing method |
| CN109471234B (en) * | 2019-01-04 | 2024-01-26 | 长春博信光电子有限公司 | Jig for cementing lens and positioning cementing method |
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| CN104483740B (en) | 2017-07-14 |
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Address after: 621900 Mianyang province Sichuan City Youxian Mianshan Road No. 64 Applicant after: Laser Fusion Research Center, Chinese Academy of Engineering Physics Address before: 400023 No. five Jane Road, Jiangbei District, Chongqing, 10 Applicant before: Laser Fusion Research Center, Chinese Academy of Engineering Physics |
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