CN205300896U - Visual amplification measuring device of system of looking in distance - Google Patents
Visual amplification measuring device of system of looking in distance Download PDFInfo
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- CN205300896U CN205300896U CN201521050473.9U CN201521050473U CN205300896U CN 205300896 U CN205300896 U CN 205300896U CN 201521050473 U CN201521050473 U CN 201521050473U CN 205300896 U CN205300896 U CN 205300896U
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- coordinate
- double
- telescopic system
- autocollimators
- sided planar
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Abstract
The utility model belongs to the optical detection field, concretely relates to visual amplification measuring device of system of looking in distance, this measuring device include laser flat interferometer, a two -sided level crossing, two coordinate autocollimator, two numbers two -sided level crossings and two numbers two coordinate autocollimator, laser flat interferometer is located by the object space end of the survey system of looking in the distance, one number two -sided level crossing one side is hugged closely in upper wall or the lower wall of being surveyed the system of looking in the distance, two coordinate autocollimator of the opposite side installation of a two -sided level crossing, two numbers two -sided level crossing one side orientation are surveyed two numbers two coordinate autocollimator of opposite side installation of the image space end of the system of looking in the distance, two numbers two -sided level crossings. The utility model discloses turn into the precision measurement to the angle with the method of going on calculating with image height, object height among traditional enlargement ratio methods of measurement, measure the conversion of measuring at the angle from the line for the measuring accuracy improves with repeatability greatly.
Description
Technical field
This utility model belongs to field of optical detection, is specifically related to a kind of telescopic system visual amplification measurement apparatus.
Background technology
Visual amplification is one of most important optical property of telescopic system, and it represents the size of instrument amplification effect. Very close relationship is had between it and other performance indications. Visual amplification must is fulfilled for the required precision to instrument, different accuracy of instruments is required also different. Along with the development of science and technology, space remote sensing technology, long-range Intelligence Technology, laser communications technology etc. are both needed to obtain high-resolution, high transmission speed by telescopic system. Each parameter index of telescopic system will directly affect overall performance, and visual amplification is as one of most important optical property of telescopic system, and the demand of its certainty of measurement is also more and more higher.
At present for the measurement problem of optical system visual amplification, two kinds of methods of main employing:
(1) utilizing the definition of optical system visual amplification, namely image height and the high ratio of thing are directly measured;
(2) according to optical system visual amplification and certain picture altitude particular kind of relationship in certain optical systems, the indirect measurement to optical system visual amplification is realized by obtaining of picture altitude.
No matter adopt which kind of method above, all need image height is judged, namely utilize image obtain the elevation information of image across the number of pixel and the product of pel spacing. Due to for the judgement of number of pixels can only be integer judge, the judgement of every side exists at most �� error of 0.5 pixel, it is possible to there is the error of �� 1 pixel in two edges, the size of image is more little, error also can be more big, therefore cannot realize the high-acruracy survey to visual amplification.
Summary of the invention
The purpose of this utility model is to provide a kind of telescopic system visual amplification measurement apparatus and measuring method, solves traditional visual amplification relying on image height judgement and measures the technical problem that commercial measurement precision is low.
Technical solution of the present utility model is: the telescopic system visual amplification measurement apparatus provided includes laser plane interferometer, a two-sided planar mirror, double; two coordinate autocollimators, No. two two-sided planar mirrors and No. two double; two coordinate autocollimators;Described laser plane interferometer is positioned at the incidence end of tested telescopic system; Upper wall or the lower wall of tested telescopic system is close in a described two-sided planar mirror side, and the opposite side of a two-sided planar mirror installs a double; two coordinate autocollimator; Described No. two two-sided planar mirror sides are towards the exit end of tested telescopic system, and the opposite side of No. two two-sided planar mirrors installs No. two double; two coordinate autocollimators.
The optical maser wavelength of above-mentioned laser plane interferometer is 632.8nm, it is possible to visual amplification certainty of measurement is increased to wavelength magnitude.
Above-mentioned double; two coordinate autocollimators and No. two double; two coordinate autocollimators are the double; two coordinate autocollimator of Germany's MOLLERELCOMAT3000 type, and angle-measurement accuracy is better than 0.2 second.
This utility model also provides for a kind of measuring method based on above-mentioned telescopic system visual amplification measurement apparatus, and it is characterized in that and comprises the following steps:
1] tested telescopic system and laser plane interferometer, No. two two-sided planar mirrors are regulated coaxial;
2] test pattern of laser plane interferometer is opened;
3] regulate the attitude of tested telescopic system and No. two two-sided planar mirrors, until laser plane interferometer obtains zero order interference fringe, make the fringe number of interference fringe less than or equal to three by adjusting the attitude of No. two two-sided planar mirrors;
4] adjust double; two coordinate autocollimators and a two-sided planar mirror autocollimatic, adjust No. two double; two coordinate autocollimators and No. two two-sided planar mirror autocollimatics;
5] double; two coordinate autocollimators and No. two double; two coordinate autocollimators are reset in current location angle;
6] by tested telescopic system horizontal rotation angle ��;
7] regulating the attitude of No. two two-sided planar mirrors, until laser plane interferometer obtains zero order interference fringe, the attitude continuing to adjust No. two two-sided planar mirrors makes the fringe number of interference fringe less than or equal to three;
8] a double; two coordinate autocollimator reading �� is read1, read No. two double; two coordinate autocollimator reading ��2;
9] calculating obtains tested telescopic system visual amplification
The beneficial effects of the utility model are in that:
(1) method being calculated with image height, thing height in tradition enlargement ratio measuring method is converted into the accurate measurement to angle, the conversion from line amount to angular amount so that measuring accuracy and repeatability are greatly improved by this utility model.
(2) this utility model make use of the precision of laser plane interferometer wavelength (632.8nm) magnitude, it is ensured that tested telescopic system rotates front and back and is in without out-of-focus appearance. Double; two coordinate autocollimator is used to carry out the angular surveying of submicrosecond magnitude, it is possible to be brought up within 1 �� by the measuring accuracy of visual amplification.
Accompanying drawing explanation
Fig. 1 is the preferred embodiment structural representation of this utility model telescopic system visual amplification measurement apparatus.
Detailed description of the invention
Referring to Fig. 1, the preferred embodiment structure of telescopic system visual amplification measurement apparatus provided by the utility model includes double; two 4, No. two two-sided planar mirrors 3 of coordinate autocollimator of 1, two-sided planar mirror of laser plane interferometer 2, one and No. two double; two coordinate autocollimators 5. Laser plane interferometer 1 is positioned at the incidence end of tested telescopic system 6; Upper wall or the lower wall of tested telescopic system 6 is close in number two-sided planar mirror 2 side, and the opposite side of a two-sided planar mirror 2 installs a double; two coordinate autocollimator 4; No. two two-sided planar mirror 3 sides are towards the exit end of tested telescopic system 6, and the opposite side of No. two two-sided planar mirrors 3 installs No. two double; two coordinate autocollimators 5.
The optical maser wavelength of laser plane interferometer 1 is 632.8nm, it is possible to visual amplification certainty of measurement is increased to wavelength magnitude.
Number double; two coordinate autocollimators 4 and No. two double; two coordinate autocollimators 5 are the double; two coordinate autocollimator of Germany's MOLLERELCOMAT3000 type, and angle-measurement accuracy is better than 0.2 second.
Operation principle of the present utility model is to utilize laser plane interferometer 1 to export parallel plane light beam, light path be collimated light beam by tested telescopic system thing side and with the form of collimated light beam from tested telescopic system image side exit, image side exit directional light is reflected back by No. two two-sided planar mirrors 3 along former road, so meeting interference condition, laser plane interferometer 1 can obtain interference fringe image. After rotating tested telescopic system 6, adjust No. two two-sided planar mirrors 3 and rotate, until reacquiring interference fringe image. The two step can strict guarantee realize tested telescopic system 6 is rotated accurately determining of the main imaging radiation direction in front and back in laser work wavelength 632.8nm order magnitude range. The rotational angle of a number two-sided planar mirror 2 is accurately measured by number double; two coordinate autocollimators 4 in above process, actual in the rotational angle recording tested telescopic system 6. No. two two-sided planar mirrors 3 are carried out autocollimatic by No. two double; two coordinate autocollimators 5, record laser plane interferometer 1 and export the rotational angle that collimated light beam rotates the outgoing collimated light beam of front and back by tested telescopic system 6.
The concrete measurement process of this utility model telescopic system visual amplification measurement apparatus preferred embodiment is:
1] 1, No. two two-sided planar mirrors 3 of tested telescopic system 6 and laser plane interferometer are regulated coaxial;
2] test pattern of laser plane interferometer 1 is opened;
3] regulate the attitude of tested telescopic system 6 and No. two two-sided planar mirrors 3, until laser plane interferometer 1 obtains zero order interference fringe, make the fringe number of interference fringe less than or equal to three by adjusting the attitude of No. two two-sided planar mirrors 3; (optical maser wavelength of laser plane interferometer 1 is 632.8nm, if the centre wavelength 632.8nm of tested telescopic system 6, then zero order interference fringe is vertical bar stricture of vagina, is otherwise concentric ring striped. )
4] adjust double; two coordinate autocollimators 4 and two-sided planar mirror 2 autocollimatic, adjust No. two double; two coordinate autocollimators 5 and No. two two-sided planar mirror 3 autocollimatics;
5] double; two coordinate autocollimators 4 and No. two double; two coordinate autocollimators 5 are reset in current location angle;
6] by tested telescopic system 6 horizontal rotation angle ��;
7] regulating the attitude of No. two two-sided planar mirrors 3, until laser plane interferometer 1 obtains zero order interference fringe, the attitude continuing to adjust No. two two-sided planar mirrors 3 makes the fringe number of interference fringe less than or equal to three;
8] the reading �� of double; two coordinate autocollimators 4 is read1(i.e. the rotational angle of tested telescopic system 6), reads the reading �� 2 (i.e. the rotational angle of No. two two-sided planar mirrors 3) of No. two double; two coordinate autocollimators 5;
9] calculating obtains tested telescopic system visual amplification
Telescopic system visual amplification measurement apparatus provided by the utility model, the submicrosecond level angle measurement accuracy utilizing the wavelength magnitude precision that interferometer has to have with double; two coordinate autocollimators, determine the visual amplification of telescopic system accurately. Line measurement in traditional image relation is converted into angular surveying, the certainty of measurement of visual amplification is increased within 1 ��.
This utility model make use of the wavelength level positioning precision of interferometer zero order fringe cleverly so that visual amplification measurement process has had accurate basis on location.
Method of testing in this utility model is applicable not only to the measurement of telescopic system visual amplification, through simple device adjustment, it is possible to realize the accurate mensuration of the indexs such as the vertical axle amplification of imaging system, angular magnification. It is both needed to be widely applied in fields such as space remote sensings, remotely scouting, laser communications.
Claims (3)
1. a telescopic system visual amplification measurement apparatus, it is characterised in that: include laser plane interferometer, a two-sided planar mirror, double; two coordinate autocollimators, No. two two-sided planar mirrors and No. two double; two coordinate autocollimators; Described laser plane interferometer is positioned at the thing square end of tested telescopic system;
Upper wall or the lower wall of tested telescopic system is close in a described two-sided planar mirror side, and the opposite side of a two-sided planar mirror installs a double; two coordinate autocollimator;
Described No. two two-sided planar mirror sides are towards the image space end of tested telescopic system, and the opposite side of No. two two-sided planar mirrors installs No. two double; two coordinate autocollimators.
2. telescopic system visual amplification measurement apparatus according to claim 1, it is characterised in that: the optical maser wavelength of described laser plane interferometer is 632.8nm.
3. telescopic system visual amplification measurement apparatus according to claim 1 and 2, it is characterised in that: described double; two coordinate autocollimators and No. two double; two coordinate autocollimators are the double; two coordinate autocollimator of Germany's MOLLERELCOMAT3000 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050473.9U CN205300896U (en) | 2015-12-15 | 2015-12-15 | Visual amplification measuring device of system of looking in distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521050473.9U CN205300896U (en) | 2015-12-15 | 2015-12-15 | Visual amplification measuring device of system of looking in distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205300896U true CN205300896U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521050473.9U Withdrawn - After Issue CN205300896U (en) | 2015-12-15 | 2015-12-15 | Visual amplification measuring device of system of looking in distance |
Country Status (1)
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| CN (1) | CN205300896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444998A (en) * | 2015-12-15 | 2016-03-30 | 中国科学院西安光学精密机械研究所 | Telescope system visual amplification measuring device and measuring method |
-
2015
- 2015-12-15 CN CN201521050473.9U patent/CN205300896U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444998A (en) * | 2015-12-15 | 2016-03-30 | 中国科学院西安光学精密机械研究所 | Telescope system visual amplification measuring device and measuring method |
| CN105444998B (en) * | 2015-12-15 | 2017-12-05 | 中国科学院西安光学精密机械研究所 | Telescopic system visual amplification measurement apparatus and measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20171205 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20171205 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |