CN206648614U - A kind of bifocal path technique focal length lens eccentricity measurement apparatus - Google Patents
A kind of bifocal path technique focal length lens eccentricity measurement apparatus Download PDFInfo
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- CN206648614U CN206648614U CN201720289835.2U CN201720289835U CN206648614U CN 206648614 U CN206648614 U CN 206648614U CN 201720289835 U CN201720289835 U CN 201720289835U CN 206648614 U CN206648614 U CN 206648614U
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Abstract
The utility model provides a kind of bifocal path technique focal length lens eccentricity measurement apparatus, belongs to technical field of optical detection.The bifocal path technique focal length lens eccentricity measurement apparatus, including upper autocollimator, lower autocollimator, air supporting rotation platform and fixture respectively.One in the upper autocollimator and lower autocollimator is used as light source, and another light beam transmitted as detector detection lens, upper autocollimator and lower autocollimator provide the double light path detected.The axis collinear of the central shaft of the upper autocollimator, the central shaft of lower autocollimator with air-bearing.The bifocal path technique focal length lens eccentricity measurement apparatus that the application provides, simple in construction, application is convenient, and measurement range is wide, improves operating efficiency and measuring accuracy when optical lens measures.
Description
Technical field
It the utility model is related to optics and detection technique field, more particularly to a kind of bifocal path technique focal length lens eccentricity
Measurement apparatus.
Background technology
Lens (lens) are according to made of the law of refraction of light, are made of transparency material (such as glass, crystal)
A kind of optical element.Lens are refracting telescopes, and its plane of refraction is two spheres (piece), or sphere (one, a sphere
Point) transparent body of plane, its imaging has real image also to have the virtual image.Lens can be widely applied to security protection, vehicle-mounted, digital phase
The every field such as machine, laser, optical instrument, as market is constantly developed, lens technologies are also increasingly widely used.
With the rapid development of optical field technology, the requirement such as many diffraction limit resolving power, measurement or imaging precisions
High system (such as light projection photoetching objective lens, satellite photogrammetry system) is to the level of lens and its technique, stability, reliability
Requirement with technology etc. also more and more higher.The eccentric testing of lens is one of these technologies.
Lens eccentricity difference is the departure degree of the cylindrical central shaft and optical axis of lens.Rotary process is that a kind of common lens are inclined
The measuring method of heart difference, but the existing lens eccentricity measurement apparatus using rotary process, structure is complex, inconvenient debugging,
The specification of test lens has restriction, inefficient.
The content of the invention
Problem to be solved in the utility model is existing lens eccentricity measurement apparatus, and operating efficiency and precision be not high, is surveyed
Narrow range is measured, use is cumbersome.
In order to solve the above technical problems, the technical solution adopted in the utility model is：It is saturating to provide a kind of bifocal path technique focal length
Mirror eccentric measuring set.The bifocal path technique focal length lens eccentricity measurement apparatus, including upper autocollimator, lower auto-collimation respectively
Instrument, air supporting rotation platform and fixture.
Platform is revolved in the air supporting, is arranged between autocollimator and lower autocollimator, including air-bearing, and air supporting rotation platform can
Around 360 ° of rotations of air-bearing.The fixture is fixedly connected with air supporting rotation platform, and the center of fixture is mutually overlapping with the axis of air-bearing
Close, fixture clamps lens to be measured, the geometrical axis of lens and the center of fixture is coincided.The upper autocollimator and lower auto-collimation
One in instrument is used as light source, another light beam transmitted as detector detection lens, upper autocollimator and lower autocollimator
The double light path of detection is provided.The axis of the central shaft of the upper autocollimator, the central shaft of lower autocollimator with air-bearing
Collinearly.
Further, the bifocal path technique focal length lens eccentricity measurement apparatus also includes driving upper autocollimator motion respectively
Upper rail and drive the lower guideway of lower autocollimator motion, upper rail and lower guideway are precise guide rail.
Preferably, the upper autocollimator and lower autocollimator are digital autocollimator, are equipped with image sensing in it
Device and graticle.
Further, the bifocal path technique focal length lens eccentricity measurement apparatus also includes the supporting table of support air supporting rotation platform,
It is arranged on the lower section of air-bearing, and the through hole passed through for detection light beam is provided with the supporting table.
Preferably, in the upper and lower surface of the supporting table, the both ends of through hole are equipped with guide sleeve.
The utility model has the advantages and positive effects of：The bifocal path technique focal length lens eccentricity measurement that the application provides
Device, simple in construction, application is convenient, and measurement range is wide, improves operating efficiency and measuring accuracy when optical lens measures.
Using upper and lower two high-precision autocollimators respectively as light source and detector, made with high-precision air supporting rotation platform
For rotary axis, measurement range is improved, focal length f=± 5mm~± 2000mm lens and the bias of camera lens can be surveyed.It can use
Transmission method measures simple lens or the center of optics microscope group is inclined, the method that can also be reflected with double light path, carries out optics microscope group
Assembling and debugging.
Brief description of the drawings
Fig. 1 is the structural representation of the application.
Fig. 2 is the test philosophy schematic diagram of the application.
In figure：1- lower guideways, autocollimator under 2-, two-dimensional adjustment under 201-, 3- supporting tables, 4- guide sleeves, 5- air supportings rotation
Platform, 501- adjusting knobs, 6- fixtures, 601- claws, the upper autocollimators of 7-, the upper two-dimensional adjustments of 701-, 8- upper rails, 9- light sources, 10-
Graticle, object lens under 11-, 12- lens to be measured, the upper object lens of 13-, 14- imaging sensors, 15- geometrical axis, 16- optical axises.
Embodiment
In order to be better understood from the utility model, enter traveling one to the utility model with reference to specific embodiments and the drawings
The description of step.
As Figure 1-Figure 2, a kind of bifocal path technique focal length lens eccentricity measurement apparatus of the application offer, including lower guideway 1,
Lower autocollimator 2, supporting table 3, air supporting rotation platform 5, fixture 6, upper autocollimator 7 and upper rail 8.
Air supporting rotation platform 5 is arranged between autocollimator 7 and lower autocollimator 8, including air-bearing, and air supporting rotation platform 5 can
Around 360 ° of rotations of air-bearing.Air supporting rotation platform is provided with the four-dimensional position for adjusting, platform being revolved by the regulation air supporting of adjusting knob 501,
Make the air supporting rotation center of platform 5, the axis of air-bearing, central shaft, the central shaft of lower autocollimator 2 of upper autocollimator 7 conllinear.
The fixed air supporting rotation platform 5 of the support of supporting table 3, is arranged on the lower section of air-bearing, supports and be provided with 3 platforms for detection light beam
The through hole passed through.In the upper and lower surface of supporting table, the both ends of through hole be equipped with guide sleeve 4.
Fixture 6 is fixedly connected with air supporting rotation platform 5, is had and is made heart function, the center of fixture 6 and the axis phase of air-bearing by oneself
Overlap, fixture clamps lens 12 to be measured, the center of the geometrical axis and fixture 6 of lens 12 is coincided.As a kind of embodiment,
Fixture 6 can be scroll chuck, and the claw 601 of scroll chuck is simultaneously radially close or exit to center, realizes self-centering,
To clamp the workpiece of different-diameter.
Upper rail 8 and lower guideway 1 are precise guide rail, meet the required precision of test.Upper rail 8 drives upper autocollimator
7 precise motions, lower guideway 1 drive the lower precise motion of autocollimator 2, facilitate the position that autocollimator is adjusted in test process.
One in upper autocollimator 7 and lower autocollimator 2 is used as light source, and another is as detector detection lens transmission
Light beam, upper autocollimator 7 and lower autocollimator 2 provide the double light path of detection.Upper autocollimator 7 and lower autocollimator 2 are
Digital autocollimator, imaging sensor 14 and graticle are equipped with it.Upper autocollimator 7 and lower autocollimator 2 with calculating
Machine is connected, and can be used in combination with the inspection software configured on computer.Upper autocollimator 7 and lower autocollimator 2 will detect
To data be transferred to computer and there is computer to carry out calculating analysis.
Test is used, and the central shaft of upper autocollimator 7, the central shaft of lower autocollimator 2, the axis with air-bearing are total to
Line.
The bifocal path technique focal length lens eccentricity measurement apparatus that the application provides, is done using upper and lower two ultra-precise autocollimators
Measurement head, two autocollimators in measurement process, be able to can be carried out to be measured with precise motion during measurement in the precise guide rail
The eccentric calibration of the upper and lower surfaces of lens 12.The application is equipped with high-precision air supporting rotation platform 5, drives the smooth rotation of lens 12 to be measured,
So as to realize contactless accurate measurement.The center of transmission method measurement simple lens or optics microscope group can be used inclined during measurement,
The method that can be reflected with double light path, carries out the assembling and debugging of optics microscope group.
In use, allowing air supporting rotation platform 5 to rotate before measuring, adjusted by the four-dimension by the mechanical axis of jig platform and two certainly
The center overlapping of axles of collimator, then place lens and misalignment measurement carried out in lens holder, adjust upper rail 8 and lower guideway 1,
Above object lens 13, lower two-dimensional adjustment 201 adjust lower object lens 11 for the upper regulation of two-dimensional adjustment 701 so that light beam is through lens as inspection
Survey on the autocollimator of device and be imaged.
The measuring principle of the application is that one of autocollimator provides directional light, and the graticle 10 built in it is by treating
Lens 12 are surveyed to be shown on computers by image acquisition device (CCD) the collection imaging inside another autocollimator.Lens to be measured
12 are placed on the self-centering fixture 6 on air supporting rotation platform 5, and the position of lens 12 to be measured can be adjusted by adjusting self-centering fixture 6
Put.Platform 5 is revolved by rotating air supporting, makes to be rotated by rotating shaft of the lens 12 to be measured around air supporting rotation platform.If the optics table of lens 12 to be measured
Centre deviation is not present in face, then the facula position on detector target surface is constant；Conversely, during if the optical surface of lens to be measured 12 is present
Heart deviation, the then off-center position of the hot spot on detector target surface.Air supporting rotation platform 5 is rotated, the hot spot axis center that can rotate does picture circle
Motion.The trace radius of hot spot are proportional to the extent of deviation on measured lens surface, can be calculated by computer to be measured
The offset of mirror 12.
Embodiment of the present utility model is described in detail above, but the content is only of the present utility model preferable
Embodiment, it is impossible to be considered as being used to limit practical range of the present utility model.All impartial changes made according to the scope of the utility model
Change and improvement etc., all should still be belonged within this patent covering scope.
Claims (5)
- A kind of 1. bifocal path technique focal length lens eccentricity measurement apparatus, it is characterised in that：Including upper autocollimator, lower auto-collimation respectively Instrument, air supporting rotation platform and fixture；Platform is revolved in the air supporting, is arranged between autocollimator and lower autocollimator, including air-bearing, and air supporting rotation platform can be around gas Floating axle holds 360 ° of rotations；The fixture is fixedly connected with air supporting rotation platform, and the center of fixture and the axis of air-bearing coincide, and fixture clamping is to be measured Lens, the geometrical axis of lens and the center of fixture is set to coincide；One in the upper autocollimator and lower autocollimator is used as light source, and another is as detector detection lens transmission Light beam, upper autocollimator and lower autocollimator provide the double light path of detection；The axis collinear of the central shaft of the upper autocollimator, the central shaft of lower autocollimator with air-bearing.
- 2. bifocal path technique focal length lens eccentricity measurement apparatus according to claim 1, it is characterised in that：Also include band respectively The upper rail of dynamic upper autocollimator motion and the lower guideway for driving lower autocollimator motion, upper rail and lower guideway are that precision is led Rail.
- 3. bifocal path technique focal length lens eccentricity measurement apparatus according to claim 1 or 2, it is characterised in that：On described certainly Collimator and lower autocollimator are digital autocollimator, are equipped with imaging sensor and graticle in it.
- 4. bifocal path technique focal length lens eccentricity measurement apparatus according to claim 1 or 2, it is characterised in that：Also include branch The supporting table of air supporting rotation platform is supportted, it is arranged on the lower section of air-bearing, is provided with the supporting table and leads to for what detection light beam passed through Hole.
- 5. bifocal path technique focal length lens eccentricity measurement apparatus according to claim 4, it is characterised in that：The supporting table In upper and lower surface, the both ends of through hole be equipped with guide sleeve.
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| CN201720289835.2U CN206648614U (en) | 2017-03-23 | 2017-03-23 | A kind of bifocal path technique focal length lens eccentricity measurement apparatus |
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| CN201720289835.2U CN206648614U (en) | 2017-03-23 | 2017-03-23 | A kind of bifocal path technique focal length lens eccentricity measurement apparatus |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407254A (en) * | 2018-11-20 | 2019-03-01 | 长春博信光电子有限公司 | A kind of lens gluing method and balsaming lens |
| CN109883361A (en) * | 2019-02-23 | 2019-06-14 | 西安昂科光电有限公司 | A method of realizing that optical module centre deviation is tested using high-precision guide rail |
| CN110455505A (en) * | 2019-09-12 | 2019-11-15 | 西安昂科光电有限公司 | A kind of lens eccentric measuring instrument |
| CN110824722A (en) * | 2018-08-07 | 2020-02-21 | 宁波舜宇光电信息有限公司 | Structured light projection module assembly device and projection module assembly and detection method |
| CN113551880A (en) * | 2021-06-30 | 2021-10-26 | 歌尔光学科技有限公司 | Eccentricity testing tool and eccentricity testing method for lens |
| CN113588215A (en) * | 2021-07-30 | 2021-11-02 | 南京恒一光电有限公司 | Optical lens detects uses eccentric appearance |
| CN113701997A (en) * | 2021-07-23 | 2021-11-26 | 歌尔光学科技有限公司 | Optical lens eccentricity testing system and method |
-
2017
- 2017-03-23 CN CN201720289835.2U patent/CN206648614U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824722A (en) * | 2018-08-07 | 2020-02-21 | 宁波舜宇光电信息有限公司 | Structured light projection module assembly device and projection module assembly and detection method |
| CN110824722B (en) * | 2018-08-07 | 2021-10-15 | 宁波舜宇光电信息有限公司 | Structured light projection module assembly device and projection module assembly and detection method |
| CN109407254A (en) * | 2018-11-20 | 2019-03-01 | 长春博信光电子有限公司 | A kind of lens gluing method and balsaming lens |
| CN109883361A (en) * | 2019-02-23 | 2019-06-14 | 西安昂科光电有限公司 | A method of realizing that optical module centre deviation is tested using high-precision guide rail |
| CN110455505A (en) * | 2019-09-12 | 2019-11-15 | 西安昂科光电有限公司 | A kind of lens eccentric measuring instrument |
| CN113551880A (en) * | 2021-06-30 | 2021-10-26 | 歌尔光学科技有限公司 | Eccentricity testing tool and eccentricity testing method for lens |
| CN113701997A (en) * | 2021-07-23 | 2021-11-26 | 歌尔光学科技有限公司 | Optical lens eccentricity testing system and 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 |
| CN113588215A (en) * | 2021-07-30 | 2021-11-02 | 南京恒一光电有限公司 | Optical lens detects uses eccentric appearance |
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