CN102073122B - Concentric assembly method for concentric optical element in off-axis concentric optical system - Google Patents
Concentric assembly method for concentric optical element in off-axis concentric optical system Download PDFInfo
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- CN102073122B CN102073122B CN201010604118.7A CN201010604118A CN102073122B CN 102073122 B CN102073122 B CN 102073122B CN 201010604118 A CN201010604118 A CN 201010604118A CN 102073122 B CN102073122 B CN 102073122B
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Abstract
A concentric assembly method for a concentric optical element in an off-axis concentric optical system relates to the field of optical instrument, and solves the problems that the existing off-axis system cannot realize high accuracy concentric assembly for concentric optical element and the detection accuracy is low. The method specifically comprises the following steps: 1) simultaneously transmitting a reference beam and a detection beam by the light source of an interferometer, wherein the detection beam simultaneously enters a first and a second optical elements through a standard lens set, the detection beam is then reflected to the standard lens set from the surface of the first and the second optical elements, and the detection beam returning to the standard lens set is interfered with the reference beam to form interference fringes; and 2) obtaining the de-focusing amount of the first and the second optical elements according to the interference fringes in the step 1); and thepositions of the first and the second optical elements are adjusted according to the de-focusing amount, thereby concentrically assembling the optical elements. The light path has high applicability and high accuracy.
Description
Technical field
The present invention relates to optical instrument field.Be specifically related to a kind of for the concentric fits method from axle concentric optical system concentric optical element.
Background technology
All concentric optical elements are sphere in the axle concentric optical system, and the centre of sphere of all spheres all is positioned at a bit.This concentric nature make optical system have good imaging quality, simple in structure, be easy to advantages such as realization, miniaturization, the especially imaging spectrometer field of spectral instrument that is applied to more and more widely has broad application prospects at numerous areas such as military surveillance, resource exploration, natural disaster monitoring, environmental pollution assessment, medical diagnosis treatments.High precision assembling and detection from the axle concentric spherical in the concentric system then are the keys that realizes and weigh instrument performance.Also do not have at present the high precision assembling of concentric spherical of system and the relevant report of detection means, this has influenced the popularization of the application of concentric system to a certain extent.
Summary of the invention
The present invention provides a kind of for the concentric fits method from axle concentric optical system concentric optical element for solving the existing problem that the high precision concentric fits of concentric optical element is difficult to realize and accuracy of detection is low in the axle system.
Be used for the concentric fits method from axle concentric optical system concentric optical element, this method is realized by following steps:
The light source of step 1, interferometer sends reference beam simultaneously and detects light beam, described detection light beam is incident to first optical element and second optical element simultaneously through the standard lens group, after first optical element and the reflection of second optical element surface, be back to the standard lens group then, described detection light beam and the reference beam generation interference of light that is back to the standard lens group forms interference fringe;
Step 2, obtain the defocusing amount of first optical element and second optical element according to the described interference fringe of step 1; Adjust the position of first optical element and second optical element according to the value of defocusing amount, realize the concentric fits of optical element;
The described standard lens group of step 1 is and the face shape of first optical element and second optical element, the standard compensation mirror that bore is complementary; The described value according to defocusing amount of step 2 is adjusted the position of first optical element and second optical element, be specially: when the difference of the defocusing amount of described first optical element and second optical element is zero or close to zero the time, realize the concentric fits of two optical elements; Described first optical element is the identical spherical reflector of face shape with second optical element.
Beneficial effect of the present invention: the concentric fits method of concentric optical element of the present invention, detect that the light path exploitativeness is strong, precision is high, effectively solved the high precision concentric fits of concentric spherical in the axle system.
Description of drawings
Fig. 1 is of the present invention for the index path from the concentric fits method of axle concentric optical system concentric optical element.
Among the figure: 1, interferometer, 2, the standard lens group, 3, first optical element, 4, second optical element.
Embodiment
Embodiment one, in conjunction with Fig. 1 present embodiment is described, is used for the concentric fits method from axle concentric optical system concentric optical element, this method is realized by following steps:
The light source of step 1, interferometer 1 sends reference beam simultaneously and detects light beam, described detection light beam is incident to first optical element 3 and second optical element 4 simultaneously through standard lens group 2, after first optical element 3 and the 4 surface reflections of second optical element, be back to standard lens group 2 then, described detection light beam and the reference beam generation interference of light that is back to standard lens group 2 forms interference fringe;
Step 2, obtain the defocusing amount of first optical element 3 and second optical element 4 according to the described interference fringe of step 1; Adjust the position of first optical element 3 and second optical element 4 according to the value of defocusing amount, realize the concentric fits of optical element.
The described generation interference of light of step 1 striped detailed process is in the present embodiment: described detection light beam is plane wave, become the surface that the ripple identical with 4 shapes of second optical element with first optical element 3 also incides two optical elements simultaneously through the standard compensation mirror, adjust position and the angle of first optical element 3 and second optical element 4, make the detection light beam be incident to two optical element surfaces along each normal to a surface direction, after the reflection of two optical element surfaces, return compensating glass along former road, become plane wave again and interfere with reference light through compensating glass.
The interference fringe of the described acquisition of step 2 can also detect the face shape error of first optical element 3 and second optical element 4 in the present embodiment.
The described standard lens group of present embodiment 2 for and the face shape of first optical element 3 and second optical element 4, the standard compensation mirror that bore is complementary, can select different standard compensation mirrors according to the face shape of optical element.
The value of the described defocusing amount according to optical element of step 3 is adjusted described first optical element 3 and second optical element 4 in the present embodiment; Be specially: when the difference of the defocusing amount of described first optical element 3 and second optical element 4 is zero or close to zero the time, realize the concentric fits of two optical elements.
The described interferometer 1 of step 1 is twin-beam unifrequency laser interferometer in the present embodiment.
The described optical element of present embodiment is the identical spherical reflector of face shape and can be concave spherical surface or protruding sphere.
The present invention can carry out the detection of concentricity precision to assembling the concentric optical element of finishing, by measuring the defocusing amount of optical element on two, determines concentricity precision thereby carry out the centrifugal of optical element according to the defocusing amount difference apart from detecting; Described defocusing amount difference and interferometer 1 wavelength product are the centrifugal distance of optical element, and when carrying out the concentric fits of optical element, requiring to make centrifugal distance according to actual items is zero or close to zero; When detecting with one heart, calculate centrifugal distance; Realize the concentric fits of two optical elements.
Claims (3)
1. be used for the concentric fits method from axle concentric optical system concentric optical element, it is characterized in that this method is realized by following steps:
The light source of step 1, interferometer (1) sends reference beam simultaneously and detects light beam, described detection light beam is incident to first optical element (3) and second optical element (4) simultaneously through standard lens group (2), after first optical element (3) and the reflection of second optical element (4) surface, be back to standard lens group (2) then, described detection light beam and the reference beam generation interference of light that is back to standard lens group (2) forms interference fringe;
Step 2, obtain the defocusing amount of first optical element (3) and second optical element (4) according to the described interference fringe of step 1; Adjust the position of first optical element (3) and second optical element (4) according to the value of defocusing amount, realize the concentric fits of optical element;
The described standard lens group of step 1 (2) is and the face shape of first optical element (3) and second optical element (4), the standard compensation mirror that bore is complementary; The described value according to defocusing amount of step 2 is adjusted the position of first optical element (3) and second optical element (4), be specially: when the difference of the defocusing amount of described first optical element (3) and second optical element (4) is zero or close to zero the time, realize the concentric fits of two optical elements; Described first optical element (3) is the identical spherical reflector of face shape with second optical element (4).
2. according to claim 1ly it is characterized in that for the concentric fits method from axle concentric optical system concentric optical element the described interferometer of step 1 (1) is twin-beam unifrequency laser interferometer.
3. according to claim 1ly it is characterized in that for the concentric fits method from axle concentric optical system concentric optical element described the identical spherical reflector of shape can be concave spherical surface or protruding sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010604118.7A CN102073122B (en) | 2010-12-24 | 2010-12-24 | Concentric assembly method for concentric optical element in off-axis concentric optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010604118.7A CN102073122B (en) | 2010-12-24 | 2010-12-24 | Concentric assembly method for concentric optical element in off-axis concentric optical system |
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| Publication Number | Publication Date |
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| CN102073122A CN102073122A (en) | 2011-05-25 |
| CN102073122B true CN102073122B (en) | 2013-07-03 |
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| CN201010604118.7A Expired - Fee Related CN102073122B (en) | 2010-12-24 | 2010-12-24 | Concentric assembly method for concentric optical element in off-axis concentric optical system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941415B (en) * | 2014-03-26 | 2016-06-01 | 中国科学院长春光学精密机械与物理研究所 | The method of debuging fast of reflective concentric optical system |
| CN103969787B (en) * | 2014-05-22 | 2016-08-17 | 北京空间机电研究所 | A kind of first assembling and positioning method of off-axis four anti-camera lenses |
| CN105090222B (en) * | 2014-12-31 | 2017-06-20 | 铜陵爱阀科技有限公司 | A kind of preparation method of high-carbon steel, stainless steel double mould assembly fine gasket |
| CN112230439B (en) * | 2020-09-21 | 2022-01-25 | 中国科学院长春光学精密机械与物理研究所 | Focal plane adjusting method for concentric optical system using optical fiber panel to transmit image |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076689A (en) * | 1991-03-27 | 1991-12-31 | Rockwell International | Off axis mirror alignment |
| CN1130758A (en) * | 1995-03-08 | 1996-09-11 | 中国科学院上海光学精密机械研究所 | L-shaped Fizeau interferometer for detecting large laser amplifier |
| CN1858632A (en) * | 2006-06-09 | 2006-11-08 | 中国科学院上海光学精密机械研究所 | Method and device for accurately determining optical system focus plane by interferometer |
-
2010
- 2010-12-24 CN CN201010604118.7A patent/CN102073122B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076689A (en) * | 1991-03-27 | 1991-12-31 | Rockwell International | Off axis mirror alignment |
| CN1130758A (en) * | 1995-03-08 | 1996-09-11 | 中国科学院上海光学精密机械研究所 | L-shaped Fizeau interferometer for detecting large laser amplifier |
| CN1858632A (en) * | 2006-06-09 | 2006-11-08 | 中国科学院上海光学精密机械研究所 | Method and device for accurately determining optical system focus plane by interferometer |
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| CN102073122A (en) | 2011-05-25 |
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Inventor after: Tang Yuguo Inventor after: Liu Yujuan Inventor after: Cui Jicheng Inventor after: Bayin Hexige Inventor before: Liu Yujuan Inventor before: Cui Jicheng Inventor before: Bayin Hexige Inventor before: Tang Yuguo |
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Free format text: CORRECT: INVENTOR; FROM: LIU YUJUAN CUI JICHENG BAYIN HEXIGE TANG YUGUO TO: TANG YUGUO LIU YUJUAN CUI JICHENG BAYIN HEXIGE |
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