CN100582715C - Lens eccentricity detection system and method - Google Patents
Lens eccentricity detection system and method Download PDFInfo
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- CN100582715C CN100582715C CN200610201383A CN200610201383A CN100582715C CN 100582715 C CN100582715 C CN 100582715C CN 200610201383 A CN200610201383 A CN 200610201383A CN 200610201383 A CN200610201383 A CN 200610201383A CN 100582715 C CN100582715 C CN 100582715C
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Abstract
The invention provides a lens eccentricity detection system for detecting eccentricity of a lens to be detected. The lens to be detected comprises a main body and a peripheral portion surrounding the main body. The eccentricity detection system comprises a carrying device, a driving device and a detection device, wherein the carrying device is used for holding the lens to be detected, the driving device is used for driving the rotation of the carrying device, and the detection device is used for detecting the eccentricity of the lens to be detected. The carrying device is provided with a holding portion mated with the diameter of the peripheral portion of the lens to be detected, the outer diameter of the holding portion is equal to the inner diameter of the peripheral portion. The invention also provides a method for detecting eccentricity of the lens. The eccentricity obtained by the detection device and the detection method is the eccentricity of the main body of the lens to be detected with respect to a rotation axis, excluding the error of the peripheral portion, so that the detection result is relatively accurate.
Description
Technical field
The present invention relates to a kind of optical detection processing procedure, relate in particular to a kind of lens eccentricity detection system and method.
Background technology
In recent years, because the fulminating growth of numerical information industry, the application demand of associated components such as compact sized optical lens such as read-write lens, digital camera, mobile phone camera and optical communication significantly increases.The rotational symmetry optical lens is when making or system assembles, and optical axis if do not overlap, will produce eccentric error with rotation axes of symmetry.Eccentric error has critical influence for the image quality of compact sized optical lens, therefore, for the detection of lens and lens subassembly eccentric error assessment, is one of the important step of making the high-precision optical lens subassembly.
The detection method of eccentric error generally includes mechanical measurement method and optical measuring method.Optical measuring method is divided into penetration again and measures method and reflective measurement method, and its measuring accuracy is used more extensive than mechanical measurement Fa Genggao.Penetration measurement method is to project the cross hair parallel beam by a collimator, focus on certain focus through lens to be measured or lens combination, cooperate suitable object lens that this focus importing eyepiece or CCD are observed the cross curve that reflects by another autocollimator again, if system optical axis departs from the mechanical rotation axle, then can be around certain center rotation by observed cross curve on eyepiece or the screen, radius of turn is the lens offset after how much conversions.As a rule, the eccentric detection method of prior art is a turning axle with the geometrical central axis of lens or lens combination usually, so the lens offset that converts out is to be the eccentric result that the geometrical central axis of lens is as the criterion with the measuring basis axle.
But, flourish along with related die industries such as moulded glass moulding and ejection formations, the ejection formation eyeglass is more and more used, yet these ejection formation eyeglasses have burr usually, after cutting off processing procedure, cast gate also has breach, so its geometrical central axis is difficult for accurately determining, is easy to generate error, causes result of measurement of eccentricity not accurate enough.Secondly, eyeglass has central part and periphery usually, rotates the error that the offset that calculates has comprised periphery with the geometrical central axis of eyeglass integral body, can not reflect the eccentric situation of the central part of optical effect truly.
Therefore, be necessary to provide a kind of measuring accuracy higher, can accurately reflect the eccentricity detection system and the method for the eccentric situation of eyeglass to be measured or lens set.
Summary of the invention
A kind of lens eccentricity detection system, be used for eyeglass to be detected is carried out eccentricity detecting, described eyeglass to be detected comprises main part and centers on the periphery of main part, described eccentricity detection system comprises bogey, drive unit and pick-up unit, described bogey is used for fixing eyeglass to be detected, described drive unit is used to drive the bogey rotation, described pick-up unit is used for eyeglass to be detected is carried out eccentricity detecting, described bogey has the holding parts that matches with the periphery internal diameter of eyeglass to be detected, and the external diameter of this holding parts equates with the internal diameter of described periphery.
A kind of eccentricity of glasses lens assay method, comprise step: provide an eyeglass to be detected and an eccentricity detection system, described eyeglass to be detected comprises main part and centers on the periphery of main part, described eccentricity detection system comprises bogey, drive unit and pick-up unit, described bogey is used for fixing eyeglass to be detected, this bogey has the holding parts that matches with the periphery internal diameter of eyeglass to be detected, the external diameter of this holding parts equates with the internal diameter of described periphery, described drive unit is used to drive the bogey rotation, and described pick-up unit is used for eyeglass to be detected is carried out eccentricity detecting; Eyeglass to be detected is fixedly arranged on the bogey holding parts, and the central shaft of main part is overlapped with the rotating shaft of bogey; Drive unit drives bogey and eyeglass to be detected placed thereon and is rotated along the central shaft of main part; Pick-up unit carries out eccentricity detecting to the eyeglass of rotation, obtains the eccentricity of glasses lens situation
In the technical program, described system and method is fastened in bogey holding parts outside with the periphery of eyeglass to be detected, thereby make the turning axle of eyeglass to be detected overlap with the central shaft of eyeglass main part to be detected, detecting the offset that obtains is the eccentric situation of main part with respect to turning axle, the error that does not comprise periphery, testing result are comparatively accurate.
Description of drawings
Fig. 1 is the eyeglass synoptic diagram to be detected that the technical program embodiment provides.
Fig. 2 is the cut-open view of the eyeglass to be detected that provides of the technical program embodiment along II-II direction among Fig. 1.
Fig. 3 is the lens eccentricity detection system synoptic diagram that the technical program embodiment provides.
Fig. 4 is the eccentricity of glasses lens detected state synoptic diagram of the technical program embodiment.
Embodiment
Be described in further detail below in conjunction with the lens eccentricity detection system and the method for drawings and Examples the technical program
See also Fig. 1 and Fig. 2, the eyeglass to be detected 100 of present embodiment is a chimeric eyeglass in, comprises main part 110 and periphery 120.Described main part 110 is the part that plays optical effect in the eyeglass, and its recessed or protruding shape is decided on the optical property of dispersing or assembling of real needs.This periphery 120 is circular, surrounds and connection main part 110, mainly act as placement, supports adjacent elements.
See also Fig. 3, the lens eccentricity detection system 200 that present embodiment provides is used for eyeglass 100 to be detected is carried out eccentricity detecting.This eccentricity detection system 200 comprises bogey 210, drive unit 220 and pick-up unit 230.Described bogey 210 is used for fixing eyeglass 100 to be detected, and described drive unit 220 is used to drive bogey 210 rotations, and described pick-up unit 230 is used for eyeglass 100 to be detected is carried out eccentricity detecting.
Described bogey 210 can have the loading end identical with a surface structure of eyeglass 100 to be detected to realize both closely chimeric, and bogey 210 also can have caulking groove to set this eyeglass 100 to be detected.In the present embodiment, described bogey 210 comprises that a holding parts 211 and is opened in the carrying shape and puts the light through hole 212 at 210 centers.This holding parts 211 is circular body, and its outer diameter D is identical with the inner diameter d of the periphery 120 of eyeglass 100 to be detected.The diameter D ' of the light through hole 212 of bogey 210 is corresponding with the diameter of the main part 120 of eyeglass 100 to be detected, with do not influence detect light beam inject or be emitted as suitable.As a rule, the diameter D ' of light through hole 212 can be less than the diameter of main part 120.
Described drive unit 220 can be realized rotation by propulsion system, and can pass through belt, gear or other modes and link to each other with bogey 210, so the rotation of drive unit 220 can drive bogey 210 and carry out fast together or difference is rotated fastly.In the present embodiment, described drive unit 220 is a right cylinder, and links to each other with belt 221 between the bogey 210, therefore, drives belt 221 motions earlier when drive unit 220 rotations, and the motion of belt 221 drives bogey 210 again and rotates around the shaft.
Described pick-up unit 230 comprises and is used for eyeglass 100 to be detected is carried out the microscope unit 231 of eccentric condition detection and is used to show the display 232 of the eccentric situation of eyeglass 100 to be detected.Described microscope unit 231 and bogey 210 coaxial settings, and link with display 232.This microscope unit 231 can be penetration, reflective or refraction type microscope.In the present embodiment, described microscope unit 231 is the penetration microscope, comprises light source 233 successively, indicates corrective lens 237 and the 3rd lens 238 that projection eyeglass 234, first lens 235, second lens 236, sign that projection mark 241 is arranged have calibration marker 242 according to optical axis direction.Light source 233 is used to send the detection light beam, requires difference can select ordinary light source or LASER Light Source for use according to measuring accuracy.As a rule, the measuring accuracy of ordinary light source is 10 seconds, and the measuring accuracy of LASER Light Source is 5 seconds.At light source 233 with will place between the bogey 210 of eyeglass 100 to be detected and be disposed with the projection eyeglass 234 and first lens 235 along detecting beam direction, projection eyeglass 234 has criss-cross projection mark 241, but first lens, 235 divergent beams.Second lens 236, corrective lens 237 and the 3rd lens 238 are set in turn in bogey 210 upsides along detecting beam direction, but second lens, 236 convergent beams, and corrective lens 237 has criss-cross calibration marker 242, the three lens 238 and is used for divergent beams.
Described display 232 is arranged at the upside of microscope unit 231, can show to detect light beam through the projection mark 241 that forms behind a plurality of optical elements and the picture of calibration marker 242 position of observing, writing down this two mark for the operator.
Certainly, this pick-up unit 230 can further comprise a mobile platform and an optical encoders, angle sensors.Mobile platform is used to set firmly bogey 210 and drive unit 220, makes bogey 210 drive eyeglass placed thereon and moves into or shift out the predetermined detection position according to detecting needs.Optical encoders, angle sensors is used for the anglec of rotation of sensing bogey 210, and then the operator can further draw the particular location situation of this two mark when rotating to a certain concrete angle.
The detection method of the lens eccentricity detection system that the employing the technical program provides will progressively be described below.
The first step provides eyeglass 100 to be detected and eccentricity detection system 200.
As shown in Figure 1 and Figure 2 eyeglass to be detected 100 and lens eccentricity detection system as shown in Figure 3 200 are provided.
In second step, eyeglass 100 to be detected is arranged at bogey 210.
See also Fig. 4, when eyeglass 100 to be detected is positioned over bogey 210, because the inner diameter d of periphery 120 is identical with the outer diameter D of bogey 210 holding parts 211, so periphery 120 can be fastened in holding parts 211 outsides just, 110 of main parts are fixedly arranged on the bogey 210.Thus, eyeglass 100 to be detected can be fixedly arranged on bogey 210 by the internal diameter that fixes periphery 120, and guarantee that the central shaft of main part 110 overlaps with the rotating shaft of bogey 210.
In the 3rd step, drive unit 220 drives bogey 210 and eyeglass to be detected 100 placed thereon is rotated.
Because the rotating shaft of bogey 210 overlaps with the central shaft of main part 110, so drive unit drive bogey 210 and eyeglass to be detected 100 are with the central shaft rotation of main part 110.
In the 4th step, 230 pairs of eyeglasses 100 to be detected of pick-up unit carry out eccentricity detecting, obtain the eccentric situation of this eyeglass.
Specifically, through having projection eyeglass 234, first lens 235, eyeglass to be detected 100, second lens 236, the corrective lens 237 that has calibration marker 242 and the 3rd lens 238 of projection mark 241, the projection mark 241 that final beam forms and the picture of calibration marker 242 are shown in display 232 successively for light beam that light source 233 sends or laser beam.Wherein, the cruciform projection mark 241 of projection eyeglass 234 is shown in display 232 again through eyeglass 100 imagings to be detected, the cruciform calibration marker 242 of corrective lens 237 is shown in display 232 without eyeglass 100 imagings to be detected, so the operator relatively can draw the eccentric situation of eyeglass 100 to be detected in the position of the picture of this two mark.If eyeglass 100 off-centre to be detected, display 232 will demonstrate the picture of projection mark 241 with the picture rotation of a certain radius around calibration marker 242,, can converse the offset of eyeglass 100 to be detected according to radius of turn.In the present embodiment, described offset is that main part 110 relative rotation axis are the offset of main part 110 central shafts.
In the technical program, eyeglass to be detected is to carry out eccentricity detecting under the situation that the central shaft with its main part is rotated, the offset that obtains is the offset of the main part relative rotation axi of eyeglass to be detected, does not comprise the error of periphery, and testing result is comparatively accurate.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes and distortion by technical conceive according to the present invention, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (10)
1. lens eccentricity detection system, be used for eyeglass to be detected is carried out eccentricity detecting, described eyeglass to be detected comprises main part and centers on the periphery of main part, described eccentricity detection system comprises bogey, drive unit and pick-up unit, described bogey is used for fixing eyeglass to be detected, described drive unit is used to drive the bogey rotation, described pick-up unit is used for eyeglass to be detected is carried out eccentricity detecting, it is characterized in that, described bogey has the holding parts that matches with the periphery internal diameter of eyeglass to be detected, and the external diameter of this holding parts equates with described internal diameter with limit portion.
2. lens eccentricity detection system as claimed in claim 1 is characterized in that, a manhole is offered at described bogey center, and this through-hole diameter is corresponding with the diameter of the main part of described eyeglass to be detected.
3. lens eccentricity detection system as claimed in claim 1 is characterized in that, described drive unit rotates around the shaft by belt or gear driven bogey.
4. lens eccentricity detection system as claimed in claim 1 is characterized in that, described pick-up unit comprises the display that is used to detect the microscope unit of eccentricity of glasses lens situation to be detected and is used for the display eccentric situation.
5. lens eccentricity detection system as claimed in claim 4 is characterized in that, described microscope unit is to be selected from a kind of in penetration, reflective or refraction or the microscope.
6. lens eccentricity detection system as claimed in claim 4 is characterized in that described microscope unit comprises the projection mark between eyeglass to be detected and light source.
7. lens eccentricity detection system as claimed in claim 4 is characterized in that, described microscope list does not have the calibration marker that comprises between eyeglass to be detected and display.
8. lens eccentricity detection system as claimed in claim 1 is characterized in that, described pick-up unit further comprises a mobile platform and an optical encoders, angle sensors.
9. eccentricity of glasses lens detection method comprises step:
One eyeglass to be detected and an eccentricity detection system are provided, described eyeglass to be detected comprises main part and centers on the periphery of main part, described eccentricity detection system comprises bogey, drive unit and pick-up unit, described bogey is used for fixing eyeglass to be detected, this bogey has the holding parts that matches with the periphery internal diameter of eyeglass to be detected, the external diameter of this holding parts equates with the internal diameter of described periphery, described drive unit is used to drive the bogey rotation, and described pick-up unit is used for eyeglass to be detected is carried out eccentricity detecting; Eyeglass to be detected is fixedly arranged on the bogey holding parts, and the central shaft of main part is overlapped with the rotating shaft of bogey;
Drive unit drives bogey and eyeglass to be detected placed thereon is rotated along the main part central shaft;
Pick-up unit carries out eccentricity detecting to the eyeglass to be detected of rotation, obtains the eccentricity of glasses lens situation.
10. eccentricity of glasses lens detection method as claimed in claim 9 is characterized in that, when described eyeglass to be detected was positioned over bogey, periphery was fastened in bogey holding parts outside, and main part is fixedly arranged on the bogey.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200610201383A CN100582715C (en) | 2006-12-25 | 2006-12-25 | Lens eccentricity detection system and method |
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| CN200610201383A CN100582715C (en) | 2006-12-25 | 2006-12-25 | Lens eccentricity detection system and method |
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| CN101210857A CN101210857A (en) | 2008-07-02 |
| CN100582715C true CN100582715C (en) | 2010-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109580179A (en) * | 2018-11-22 | 2019-04-05 | 中国科学院苏州生物医学工程技术研究所 | Non-spherical lens Accentric detector and its detection method based on wave front technology |
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| CN101634550B (en) * | 2008-07-23 | 2013-02-13 | 鸿富锦精密工业（深圳）有限公司 | Eccentricity detecting device |
| TWI427268B (en) * | 2008-08-08 | 2014-02-21 | Hon Hai Prec Ind Co Ltd | Apparatus for testing eccentricity |
| CN102538738B (en) * | 2010-12-13 | 2016-07-06 | 鸿富锦精密工业（深圳）有限公司 | Device for measuring eccentricity of optical component |
| CN102879182B (en) * | 2012-09-27 | 2014-12-24 | 中国科学院长春光学精密机械与物理研究所 | Method for measuring off-axis aspheric surface eccentricity by laser tracker |
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| CN110793754A (en) * | 2019-11-01 | 2020-02-14 | 中国科学院光电技术研究所 | Spliced telescope system eccentricity error detection method based on phase shift modulation |
| CN113093399A (en) * | 2020-01-08 | 2021-07-09 | 三营超精密光电(晋城)有限公司 | Lens assembling device and lens assembling method |
| CN113701997B (en) * | 2021-07-23 | 2024-05-14 | 歌尔光学科技有限公司 | Optical lens eccentricity test system and method |
| CN114967024B (en) * | 2022-06-24 | 2024-04-12 | 江西弘耀光学水晶有限公司 | High-precision optical lens eccentric adjustment structure and method |
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