CN201096611Y - Aspheric lens eccentric measuring apparatus - Google Patents
Aspheric lens eccentric measuring apparatus Download PDFInfo
- Publication number
- CN201096611Y CN201096611Y CNU2007201263211U CN200720126321U CN201096611Y CN 201096611 Y CN201096611 Y CN 201096611Y CN U2007201263211 U CNU2007201263211 U CN U2007201263211U CN 200720126321 U CN200720126321 U CN 200720126321U CN 201096611 Y CN201096611 Y CN 201096611Y
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- lens
- aspheric
- laser tube
- imageing sensor
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Abstract
The utility model relates to the optical element detection technical field, in particular to an eccentricity measuring device for an aspheric lens. The eccentricity measuring device aims to solve the problem of low measurement accuracy found in the prior art. The technical proposal adopted by the eccentricity measuring device is that the eccentricity measuring device for the aspheric lens comprises a laser tube and a measured lens whose single surface is aspheric; the spherical surface of the measured lens is fixed on a four-dimensional adjusting frame which is connected with a precise rotary shaft system; the aspheric surface of the lens is arranged on the same side as the laser tube; a beam waist transformation lens is arranged between the laser tube and the measured lens; an image sensor which is vertical to the peak light intensity axial line of the reflective laser is arranged along the reflective surface direction of the measured lens; a lens, a microscopic objective constructed by a lens, a half-transmission half-reflection lens and an image sensor are sequentially arranged on the spherical surface side of the measured lens; a reticle, a ground glass and a light source are sequentially arranged above the half-transmission half-reflection lens; the reticle is positioned on the focal plane of the lens.
Description
Affiliated technical field:
The utility model relates to optical element detection technique field, is specifically related to a kind of eccentric measuring set of non-spherical lens.
Background technology:
When at present domestic non-spherical lens production product man carries out misalignment measurement for the non-spherical lens of producing in batches; the main clock gauge that adopts carries out contact type measurement; surface through regular meeting's injuring part; if between the probe of clock gauge and aspheric surface surface of contact, add layer protective layer (as thin paper), because the flexible precision measured of just can not guaranteeing of paper.In order to overcome above-mentioned shortcoming, non-contact measurement apparatus becomes the direction of research, open the eccentric determinator of having put down in writing a kind of non-spherical lens in the flat 8-233686 communique the spy, it is exactly a kind of non-contact measurement apparatus, its principle of work is: when detected lens rotate around the mechanical rotation axle, change through the two-dimensional coordinate of aspheric surface laser light reflected hot spot on CCD by the displacement measurement apparatus record, calculate corresponding offset according to variable quantity and aspheric surface, the problem that it exists is: very short to the distance of CCD at the incidence point of non-spherical surface because of laser, therefore the precision of measuring is restricted.
Summary of the invention:
The utility model will provide a kind of eccentric measuring set of non-spherical lens, to overcome the not high enough problem of measuring accuracy that prior art exists.
For overcoming the problem that prior art exists, the technical solution of the utility model is: a kind of eccentric measuring set of non-spherical lens, comprise that laser tube 1 and single face are aspheric detected lens 3, sphere one side of detected lens 3 is fixed on the four-dimensional adjusting bracket 4, four-dimensional adjusting bracket 4 connects with accurate rotary axis 5, the aspheric surface of lens 3 and laser tube 1 homonymy, its special character is: be provided with transform lens 2 with a tight waist between laser tube 1 and detected lens 3, the reflecting surface direction of detected lens 3 is provided with the imageing sensor 13 perpendicular with the peak light intensity axis of reflector laser; Sphere one side at detected lens 3 also is sequentially set with microcobjective, semi-transparent semi-reflecting lens 8 and the imageing sensor of being made up of lens 6, lens 79, be sequentially set with graticule 10, frosted glass 11 and light source 12 above semi-transparent semi-reflecting lens 8, graticule 10 is positioned on the focal plane of lens 7.
Above-mentioned imageing sensor 13 and imageing sensor 9 are CCD.
Above-mentioned laser tube 1 can be provided with a plurality of, and being provided with that corresponding transform lens with a tight waist 2 and imageing sensor 13 are also corresponding organized more.
Compared with prior art, the utility model has the advantages that:
Highly sensitive, good measuring accuracy: this equipment by transform lens with a tight waist, makes CCD still can receive less laser facula in distance enough far away by laser, has improved detection sensitivity, has effectively improved measuring accuracy.
This device also can adopt multiple laser to incide the non-spherical surface of detected lens simultaneously, with the image that receives by computing, obtain the offset direction of aspheric surface axis of symmetry, can instruct the adjustment direction that overlaps of aspheric axis of symmetry and mechanical rotation axle, effectively improve the detection speed of lens off-centre.
Description of drawings:
Fig. 1 is the synoptic diagram of detected lens;
Fig. 2 is a structural representation of the present utility model.
Description of reference numerals is as follows:
1-laser tube, the 2-transform lens of girdling the waist, the detected lens of 3-, the four-dimensional adjusting bracket of 4-, the accurate rotary axis of 5-, the 6-lens, 7-lens, 8-semi-transparent semi-reflecting lens, 9-imageing sensor, 10-cross-graduation plate, 11-frosted glass, 12-light source, 13-imageing sensor, 14-computing machine.
Embodiment:
Below in conjunction with drawings and Examples the utility model is elaborated.
Referring to Fig. 1, be the detected lens 3 of aspheric surface for single face shown in the figure, first 3a of detected lens 3 is aspheric surface, and second 3b is sphere, and ia is the axis of symmetry of aspheric surface 3a.Detected lens 3 in the ideal case, the centre of sphere 3ob of its sphere 3b should drop on the axis of symmetry ia of aspheric surface 3a, this moment, ia was the optical axis of detected lens 3, yet in fact be difficult to make such lens.Usually the axis of symmetry ia of the centre of sphere 3ob of sphere 3b and aspheric surface 3a exists bias t as shown in Figure 1, and this bias t has just represented detected lens 3 intrinsic off-centre own.
Referring to Fig. 2, a kind of eccentric measuring set of non-spherical lens, comprise that laser tube 1 and single face are aspheric detected lens 3, the sphere one side 3b of detected lens 3 is fixed on the four-dimensional adjusting bracket 4, four-dimensional adjusting bracket 4 connects the aspheric surface 3a of lens 3 and laser tube 1 homonymy with accurate rotary axis 5.Be provided with transform lens 2 with a tight waist between laser tube 1 and the detected lens 3, the reflecting surface direction of detected lens 3 is provided with the imageing sensor 13 perpendicular with the peak light intensity axis of reflector laser, and imageing sensor 13 is selected CCD for use in the present embodiment.Also be sequentially set with the imageing sensor 9 of microcobjective, semi-transparent semi-reflecting lens 8 and reception centre of sphere reflection image in sphere one side of detected lens 3, imageing sensor 9 is selected CCD for use in the present embodiment, microcobjective is made up of lens 6, lens 7, above semi-transparent semi-reflecting lens 8, be provided with graticule 10, frosted glass 11 and light source 12, graticule 10 is positioned on the focal plane of lens 7.
Imageing sensor 9 and imageing sensor 13 all join with computing machine 14.
Principle of work of the present utility model is: the laser beam of being sent by laser tube 1 incides the surface of detected non-spherical lens 3 through transform lens 2 with a tight waist, through the aspheric surface 3a of lens 3 reflection, receive the with a tight waist of reflector lasers by imageing sensor 13, the effect of lens 2 is that make laser with a tight waist transforms on the photosurface of imageing sensor 13.Make of the mechanical rotation axle k rotation of detected lens 3 by accurate rotary axis 5 around this precision bearing system, handling the also beat that detects the laser facula center by COMPUTER CALCULATION rotates, regulate the position of detected lens 3 by four-dimensional adjusting bracket 4, center up to laser facula does not change along with the rotation of lens, and the axis of symmetry ia that aspheric surface 3a is described overlaps with the mechanical rotation axle k of accurate turning axle system 5.
The misalignment measurement instrument of forming sphere in the utility model by lens 6, lens 7, semi-transparent semi-reflecting lens, 8 imageing sensors 9, graticule 10, frosted glass 11 and light source 12.When the axis of symmetry ia of aspheric surface 3a overlaps with the mechanical rotation axle k of accurate turning axle system 5, adjust the position of sphere misalignment measurement instrument, make the light beam that sends from cross-graduation plate 10 through the microcobjective post-concentration near the centre of sphere 3ob of sphere 3b, light beam obtains the centre of sphere reflection image of sphere 3b on CCD9 after the reflection of sphere 3b autocollimation, if centre of sphere 3ob drops on the mechanical rotation axle k (also being the axis of symmetry ia of aspheric surface 3a) of accurate rotary axis 5, by the detected lens 3 of accurate rotary axis 5 rotations, this moment, centre of sphere reflection image was motionless.If existing, centre of sphere 3ob and mechanical rotation axle k depart from, then centre of sphere reflection image is drawn a circle on the photosurface of imageing sensor 9, imageing sensor 9 is input to computing machine 14 with the information that collects, obtain the bias of the centre of sphere 3ob of sphere 3b by computing to mechanical rotation axle k, be the bias t of centre of sphere 3ob with respect to the axis of symmetry ia of aspheric surface 3a, this bias is exactly detected lens 3 intrinsic offsets own.
Laser tube 1 can be provided with a plurality of, and being provided with of transform lens 2 with a tight waist and imageing sensor 13 correspondences organized more.A plurality of imageing sensors 13 all join with computing machine 14.
Claims (3)
1, a kind of eccentric measuring set of non-spherical lens, comprise that laser tube (1) and single face are aspheric detected lens (3), sphere one side of detected lens (3) is fixed on the four-dimensional adjusting bracket (4), four-dimensional adjusting bracket (4) connects with accurate rotary axis (5), the aspheric surface of lens (3) and laser tube (1) homonymy, it is characterized in that: be provided with transform lens with a tight waist (2) between laser tube (1) and detected lens (3), the reflecting surface direction of detected lens (3) is provided with the imageing sensor (13) perpendicular with the peak light intensity axis of reflector laser; Sphere one side at detected lens (3) also is sequentially set with microcobjective, semi-transparent semi-reflecting lens (8) and the imageing sensor of being made up of lens (6), lens (7) (9), be sequentially set with graticule (10), frosted glass (11) and light source (12) in the top of semi-transparent semi-reflecting lens (8), graticule (10) is positioned on the focal plane of lens (7).
2, the eccentric measuring set of a kind of non-spherical lens as claimed in claim 1 is characterized in that: described imageing sensor (13) and imageing sensor (9) are CCD.
3, the eccentric measuring set of a kind of non-spherical lens as claimed in claim 1 or 2 is characterized in that: described laser tube (1) is provided with a plurality of, and being provided with that corresponding transform lens with a tight waist (2) and imageing sensor (13) are corresponding organized more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201263211U CN201096611Y (en) | 2007-11-08 | 2007-11-08 | Aspheric lens eccentric measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201263211U CN201096611Y (en) | 2007-11-08 | 2007-11-08 | Aspheric lens eccentric measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096611Y true CN201096611Y (en) | 2008-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201263211U Expired - Fee Related CN201096611Y (en) | 2007-11-08 | 2007-11-08 | Aspheric lens eccentric measuring apparatus |
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| CN (1) | CN201096611Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316002A (en) * | 2014-10-10 | 2015-01-28 | 中国科学院光电研究院 | Laser tracker optical axis and mechanical rotating shaft translation detection device and method |
| CN106104247A (en) * | 2014-03-28 | 2016-11-09 | 柯尼卡美能达株式会社 | Aspheric method for measuring eccentricity quantity and shape analysis method |
| CN107339955A (en) * | 2017-01-07 | 2017-11-10 | 深圳市灿锐科技有限公司 | A kind of inclined detecting instrument in high-precision lenses center and its measuring method |
| CN108139205A (en) * | 2015-10-23 | 2018-06-08 | 卡驰诺光电系统股份有限公司 | Optical element characteristic detecting apparatus |
| CN109239884A (en) * | 2018-09-18 | 2019-01-18 | 昆明北方红外技术股份有限公司 | The positioning system and method for guide rail in variable-power optical system |
| CN109297683A (en) * | 2018-10-11 | 2019-02-01 | 广州博冠光电科技股份有限公司 | It is a kind of quickly to detect the inclined device and method in lens centre based on Digital Laser Hologram |
| CN112697054A (en) * | 2020-12-10 | 2021-04-23 | 无锡鑫巨宏智能科技有限公司 | Microlens rise measuring device and method |
-
2007
- 2007-11-08 CN CNU2007201263211U patent/CN201096611Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106104247A (en) * | 2014-03-28 | 2016-11-09 | 柯尼卡美能达株式会社 | Aspheric method for measuring eccentricity quantity and shape analysis method |
| CN106104247B (en) * | 2014-03-28 | 2018-07-20 | 柯尼卡美能达株式会社 | Aspherical method for measuring eccentricity quantity and shape analysis method |
| CN104316002A (en) * | 2014-10-10 | 2015-01-28 | 中国科学院光电研究院 | Laser tracker optical axis and mechanical rotating shaft translation detection device and method |
| CN108139205A (en) * | 2015-10-23 | 2018-06-08 | 卡驰诺光电系统股份有限公司 | Optical element characteristic detecting apparatus |
| CN107339955A (en) * | 2017-01-07 | 2017-11-10 | 深圳市灿锐科技有限公司 | A kind of inclined detecting instrument in high-precision lenses center and its measuring method |
| CN109239884A (en) * | 2018-09-18 | 2019-01-18 | 昆明北方红外技术股份有限公司 | The positioning system and method for guide rail in variable-power optical system |
| CN109239884B (en) * | 2018-09-18 | 2021-05-04 | 昆明北方红外技术股份有限公司 | Positioning system and method for guide rail in zoom optical system |
| CN109297683A (en) * | 2018-10-11 | 2019-02-01 | 广州博冠光电科技股份有限公司 | It is a kind of quickly to detect the inclined device and method in lens centre based on Digital Laser Hologram |
| CN109297683B (en) * | 2018-10-11 | 2024-02-20 | 广州博冠光电科技股份有限公司 | Device and method for rapidly detecting lens center deviation based on digital laser holography |
| CN112697054A (en) * | 2020-12-10 | 2021-04-23 | 无锡鑫巨宏智能科技有限公司 | Microlens rise measuring device and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20101108 |