CN103698107A - Negative lens focal length testing device and testing method - Google Patents
Negative lens focal length testing device and testing method Download PDFInfo
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- CN103698107A CN103698107A CN201310660582.1A CN201310660582A CN103698107A CN 103698107 A CN103698107 A CN 103698107A CN 201310660582 A CN201310660582 A CN 201310660582A CN 103698107 A CN103698107 A CN 103698107A
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- 238000012360 testing method Methods 0.000 title abstract description 16
- 238000004088 simulation Methods 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 10
- 238000010998 test method Methods 0.000 claims description 8
- 238000003384 imaging method Methods 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
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Abstract
The invention relates to a negative lens focal length testing device and a testing method, wherein the negative lens focal length testing device comprises a light source, a target simulation system, a monitoring system and a data acquisition and processing system; the target simulation system and the monitoring system are sequentially arranged on an emergent light path of the light source; the monitoring system is connected with the data acquisition and processing system; the negative lens to be measured is arranged between the target simulation system and the monitoring system. The invention provides a negative lens focal length testing device and a testing method with small errors and high measuring efficiency.
Description
Technical field
The invention belongs to optic test field, relate to a kind of negative lens focal length proving installation and method of testing, relate in particular to a kind of length burnt negative lens focal length proving installation and method of testing.
Background technology
Negative lens is the conventional optical element in optical measuring device, and after it machines, focal length is an important parameter, the processing of its focal length accurately whether, directly affect the docking of whole light path.
Conventional test methodologies: the test to short burnt negative lens focal length, the test macro that conventionally adopts parallel light tube and long working distance microscope to form, tests its focal length by magnification method; And to growing the test of burnt negative lens focal length, the general supplementary lens method that adopts is tested, and adopts the long positive lens of a focal distance ratio negative lens focal length to form galilean telescope system, and making its defocusing amount is zero, by testing its visual amplification, indirectly measure negative lens focal length, this method needs positive negative lens docking, and set-up procedure is complicated, and measuring main source of error is the focus error of positive lens, this method of testing takes time and effort, inefficiency, and precision is also relatively low.
Summary of the invention
In order to solve the above-mentioned technical matters existing in background technology, the invention provides a kind of error little and measure high negative lens focal length proving installation and the method for testing of efficiency.
Technical solution of the present invention is: the invention provides a kind of negative lens focal length proving installation, its special character is: described negative lens focal length proving installation comprises light source, target simulation system, surveillance and data acquisition and processing system; Described target simulation system and surveillance are successively set on the emitting light path of light source; Described surveillance is connected with data acquisition and processing system; Negative lens to be measured is arranged between target simulation system and surveillance.
Above-mentioned target simulation system comprises glass sieve plate and parallel light tube; Described glass sieve plate and parallel light tube are successively set on the emitting light path of light source.
Above-mentioned glass sieve plate is arranged on the focal plane of parallel light tube.
Above-mentioned surveillance comprises zoom lens and imageing sensor; Negative lens to be measured, zoom lens and imageing sensor are arranged in same light path; Described imageing sensor is connected with data acquisition and processing system.
Above-mentioned imageing sensor is the imageing sensor aiming at two-wire.
The collection control computing machine that above-mentioned data acquisition and processing system comprises length measuring mechanism and is connected with length measuring mechanism; Described imageing sensor is controlled computing machine with collection and is connected.
A negative lens focal length method of testing based on negative lens focal length proving installation as above, its special character is: said method comprising the steps of:
1) open light source, the parallel light tube of glass sieve plate is housed on illumination focal plane;
2) negative lens to be measured is placed between parallel light tube and zoom lens, negative lens to be measured becomes the virtual image to glass sieve plate;
3) surveillance being comprised of zoom lens and imageing sensor is to step 2) the resulting virtual image monitors;
4) regulate zoom lens, the supervision face of zoom lens is overlapped through negative lens imaging face to be measured with glass sieve plate;
5) use the imageing sensor aiming at two-wire to aim at glass sieve plate as one of line centering;
6) make length measuring mechanism zero clearing, then aim at glass sieve plate as another of line centering with imageing sensor, record length that length measuring mechanism is surveyed, the focal distance f of negative lens ' be:
Wherein:
F is parallel light tube focal length;
L is the right spacing of POLO printed line;
L ' is that glass sieve printed line is to the image height through negative lens imaging.
The invention has the advantages that:
The invention provides a kind of negative lens focal length proving installation and method of testing, utilize parallel light tube, zoom lens, imageing sensor, collection to control computing machine combination, adopt magnification method to realize the measurement to long burnt negative lens focal length; The surveillance that adopts zoom lens and imageing sensor to form, has avoided human eye to aim at the error that visual fatigue is introduced.Adopt this device, automaticity is high, is applicable to the measurement of long burnt negative lens focal length, increases work efficiency.Adopt this device, without the impact of supplementary lens, measuring accuracy further improves.The method of testing of the burnt negative lens focal length of length provided by the present invention, has solved the deficiency of supplementary lens method test, has greatly improved work efficiency and focal length measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the principle schematic of negative lens focal length proving installation provided by the present invention;
Wherein:
1-light source; 2-glass sieve plate; 3-parallel light tube; 4-negative lens to be measured; 5-zoom lens; 6-imageing sensor; 7-length measuring mechanism; 8-gathers and controls computing machine.
Embodiment
Referring to Fig. 1, the invention provides a kind of negative lens focal length proving installation, its special character is: negative lens focal length proving installation comprises light source 1, target simulation system, surveillance and data acquisition and processing system; Target simulation system and surveillance are successively set on the emitting light path of light source 1; Surveillance is connected with data acquisition and processing system; Negative lens 4 to be measured is arranged between target simulation system and surveillance.
Target simulation system comprises glass sieve plate 2 and parallel light tube 3; Glass sieve plate 2 and parallel light tube 3 are successively set on the emitting light path of light source 1.
Glass sieve plate 2 is arranged on the focal plane of parallel light tube 3.
Surveillance comprises zoom lens 5 and imageing sensor 6; Negative lens 4 to be measured, zoom lens 5 and imageing sensor 6 are arranged in same light path; Imageing sensor 6 is connected with data acquisition and processing system.
The collection control computing machine 8 that data acquisition and processing system comprises length measuring mechanism 7 and is connected with length measuring mechanism 7; Imageing sensor 6 is controlled computing machine 8 with collection and is connected.Length measuring mechanism 7 is the conventional at present various devices that can measure length.
During work, open light source 1, the parallel light tube 3 of glass sieve plate 2 is housed on illumination focal plane, negative lens 4 to be measured is placed in before parallel light tube 3,2 one-tenth virtual images of 4 pairs of glass sieve plates of negative lens to be measured, the surveillance being comprised of zoom lens 5 and imageing sensor 6 monitors it.Regulate zoom lens 5, its supervision face is overlapped through negative lens 4 imaging faces to be measured with glass sieve plate 2, use the imageing sensor 6 aiming at two-wire to aim at glass sieve plate as one of line centering, make length measuring mechanism 7 zero clearings, with imageing sensor 6, aim at glass sieve plates as another of line centering again, record length measuring mechanism 7 length of surveying, the focal distance f of negative lens ' be:
In formula, f is parallel light tube focal length, and L is the right spacing of POLO printed line, and L ' glass sieve printed line is to the image height through negative lens imaging.
Claims (7)
1. a negative lens focal length proving installation, is characterized in that: described negative lens focal length proving installation comprises light source, target simulation system, surveillance and data acquisition and processing system; Described target simulation system and surveillance are successively set on the emitting light path of light source; Described surveillance is connected with data acquisition and processing system; Negative lens to be measured is arranged between target simulation system and surveillance.
2. negative lens focal length proving installation according to claim 1, is characterized in that: described target simulation system comprises glass sieve plate and parallel light tube; Described glass sieve plate and parallel light tube are successively set on the emitting light path of light source.
3. negative lens focal length proving installation according to claim 2, is characterized in that: described glass sieve plate is arranged on the focal plane of parallel light tube.
4. according to the negative lens focal length proving installation described in claim 1 or 2 or 3, it is characterized in that: described surveillance comprises zoom lens and imageing sensor; Negative lens to be measured, zoom lens and imageing sensor are arranged in same light path; Described imageing sensor is connected with data acquisition and processing system.
5. negative lens focal length proving installation according to claim 4, is characterized in that: described imageing sensor is the imageing sensor aiming at two-wire.
6. negative lens focal length proving installation according to claim 5, is characterized in that: the collection control computing machine that described data acquisition and processing system comprises length measuring mechanism and is connected with length measuring mechanism; Described imageing sensor is controlled computing machine with collection and is connected.
7. the negative lens focal length method of testing based on negative lens focal length proving installation claimed in claim 6, is characterized in that: said method comprising the steps of:
1) open light source, the parallel light tube of glass sieve plate is housed on illumination focal plane;
2) negative lens to be measured is placed between parallel light tube and zoom lens, negative lens to be measured becomes the virtual image to glass sieve plate;
3) surveillance being comprised of zoom lens and imageing sensor is to step 2) the resulting virtual image monitors;
4) regulate zoom lens, the supervision face of zoom lens is overlapped through negative lens imaging face to be measured with glass sieve plate;
5) use the imageing sensor aiming at two-wire to aim at glass sieve plate as one of line centering;
6) make length measuring mechanism zero clearing, then aim at glass sieve plate as another of line centering with imageing sensor, record length that length measuring mechanism is surveyed, the focal distance f of negative lens ' be:
Wherein:
F is parallel light tube focal length;
L is the right spacing of POLO printed line;
L ' is that glass sieve printed line is to the image height through negative lens imaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310660582.1A CN103698107B (en) | 2013-12-06 | 2013-12-06 | Negative lens focal length testing device and testing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310660582.1A CN103698107B (en) | 2013-12-06 | 2013-12-06 | Negative lens focal length testing device and testing method |
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| CN103698107A true CN103698107A (en) | 2014-04-02 |
| CN103698107B CN103698107B (en) | 2016-04-27 |
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| CN201310660582.1A Expired - Fee Related CN103698107B (en) | 2013-12-06 | 2013-12-06 | Negative lens focal length testing device and testing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203304A (en) * | 2015-10-09 | 2015-12-30 | 茂莱（南京）仪器有限公司 | Optical bench for measuring focus length through magnification method |
| CN111679426A (en) * | 2020-05-29 | 2020-09-18 | 南通大学 | Design method of focimeter of electrodeless zoom lens |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086530A (en) * | 2007-07-04 | 2007-12-12 | 中国航空工业第一集团公司第六一三研究所 | 1.064um laser range finder transmitting antenna debugging method and apparatus |
| CN201569558U (en) * | 2009-09-08 | 2010-09-01 | 湖北华中光电科技有限公司 | Automated focal length detector |
| CN102636181A (en) * | 2012-03-16 | 2012-08-15 | 长春奥普光电技术股份有限公司 | Method for detecting focal length of high-precision spatial aerial camera |
| CN203606110U (en) * | 2013-12-06 | 2014-05-21 | 中国科学院西安光学精密机械研究所 | Negative lens focal length testing device |
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2013
- 2013-12-06 CN CN201310660582.1A patent/CN103698107B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086530A (en) * | 2007-07-04 | 2007-12-12 | 中国航空工业第一集团公司第六一三研究所 | 1.064um laser range finder transmitting antenna debugging method and apparatus |
| CN201569558U (en) * | 2009-09-08 | 2010-09-01 | 湖北华中光电科技有限公司 | Automated focal length detector |
| CN102636181A (en) * | 2012-03-16 | 2012-08-15 | 长春奥普光电技术股份有限公司 | Method for detecting focal length of high-precision spatial aerial camera |
| CN203606110U (en) * | 2013-12-06 | 2014-05-21 | 中国科学院西安光学精密机械研究所 | Negative lens focal length testing device |
Non-Patent Citations (1)
| Title |
|---|
| 张金平: "平行光管法测凹透镜焦距及其误差分析", 《河北大学学报(自然科学版)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203304A (en) * | 2015-10-09 | 2015-12-30 | 茂莱（南京）仪器有限公司 | Optical bench for measuring focus length through magnification method |
| CN111679426A (en) * | 2020-05-29 | 2020-09-18 | 南通大学 | Design method of focimeter of electrodeless zoom lens |
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| CN103698107B (en) | 2016-04-27 |
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