CN106405856A - Method for detecting optical axis stability of optical lens during focusing process - Google Patents
Method for detecting optical axis stability of optical lens during focusing process Download PDFInfo
- Publication number
- CN106405856A CN106405856A CN201610905012.8A CN201610905012A CN106405856A CN 106405856 A CN106405856 A CN 106405856A CN 201610905012 A CN201610905012 A CN 201610905012A CN 106405856 A CN106405856 A CN 106405856A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000007689 inspection Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 abstract 1
- 230000004069 differentiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/32—Fiducial marks and measuring scales within the optical system
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention relates to a method for detecting optical axis stability of an optical lens during a focusing process. A lens is fixed on a platform and is focused to be in an infinite state. A checking tube is arranged at an object space of the lens; a high-precision internal-focusing telescope is arranged at an image space of the lens; a focusing lens of the internal-focusing telescope is adjusted to enable a crisscross image to be overlapped with a focal plane of the image space of the lens; and the position of the crisscross image is marked to be X1 and Y1 at this time. A distance adjusting hand wheel of the checking tube is adjusted to enable a dividing panel of the checking tube to move axially towards an objective lens direction of the checking tube; a focusing ring of the lens is adjusted and the focal length of the lens is adjusted to be at a close level; and the position of the crisscross image is marked to be X2 and Y2 at this time. A two-dimensional turntable is adjusted to carry out position switching from the X2, Y2 to the X1, Y1; and the deflection of the two-dimensional turntable is read, so that an optical axis offset error during the focusing process is obtained. Therefore, batch measurement of stability of the focusing axis of the lens can be realized rapidly and a high-quality product is selected.
Description
Technical field
The invention belongs to the detection method of optical lens is and in particular to a kind of detect optical lens optical axis in focussing process
The method of stability.
Background technology
Camera lens deviation of optical axis in assembling process directly affects the focus adjusting mechanism of the image quality particularly camera lens of camera lens,
Because focus adjusting mechanism is not fixing to be easier to cause deviation in focussing process inside lens barrel.Camera lens is adjusted in focussing process
The track of focusing mechanism is referred to as " directrix ".Directrix ought to the optical axis of camera lens point-blank, but the parts due to lens barrel
Error when error and assembling, actually in the light path of focusing, directrix can occur certain drift angle, directrix phase with respect to optical axis
Drift angle size for optical axis directly influences the quality of camera lens it is necessary to checking and controlling.
Content of the invention
Technical problem to be solved
In place of the deficiencies in the prior art, the present invention proposes a kind of detection optical lens optical axis in focussing process
The method of stability.
Technical scheme
A kind of method of detection optical lens optical axis stable in focussing process is it is characterised in that step is as follows：
Step 1：Camera lens 3 is fixed on platform 7, the image space axis be aligned interior focusing autocollimator 5 of camera lens, interior focusing is certainly
Collimator is placed in dimensional turntable 6；Pipe 1 is adjusted in the object space be aligned inspection of camera lens；
Step 2：Lens focusing ring is focused to infinite point, inspection adjusts the graticle of pipe to be located at object lens focal plane so as to carry
For infinity target；
The condenser lens of adjustment interior focusing autocollimator 5, makes the cross picture of interior focusing autocollimator 5 burnt with the image space of camera lens
Face overlaps, mark now monitor cross image position X1, Y1；
Step 3：Rotate inspection tune pipe makes graticle in axial direction move so as to be provided with to object lens apart from adjusting handle
Limit remote target；Adjust the focusing ring of camera lens afterwards, make monitor show now cross image position X2, Y2；
Adjustment dimensional turntable orientation and pitching, by X2, Y2 cross picture movement to X1, the position of Y1, now two dimension turns record
The drift angle of platform, is optical axis deviation in focussing process；
Step 3 is repeated several times and records multiple optical axis deviation data, with when the optical axis deviation that time obtain with previous or front several times
Optical axis deviation contrasted, with contrast difference represent focusing optical axis stable.
Described camera lens 3 is the camera lens with focus adjusting mechanism, and other have the optical device that focusing aims at.
Beneficial effect
A kind of method of detection optical lens optical axis stable in focussing process proposed by the present invention, first that camera lens is solid
Determine on platform, lens focusing is to infinite point.Placing an inspection in the object space of camera lens adjusts pipe adjustment inspection to adjust the distance of pipe to adjust
Handwheel makes differentiation plate adjust to object lens position of focal plane so as to provide infinity target, places a high accuracy in the image space of camera lens
Internal focusing telescope internal focusing telescope is placed in high-precision digital-display dimensional turntable, the condenser lens of adjustment internal focusing telescope
So that cross picture is overlapped with the image space focal plane of camera lens, make the image that the cross of display on monitor breaks up plate be in clear state, mark
Now cross image position X1, Y1.Then adjustment inspection adjusts the graticle making inspection tune pipe apart from adjusting handle of pipe to adjust pipe to inspection
Object lens direction move axially, simultaneously adjust camera lens focusing ring so that lens focusing is arrived nearby, make the cross that monitor shows
Graduation picture is in picture rich in detail, mark now cross image position X2, Y2.Adjustment dimensional turntable makes X2, Y2 move to X1, Y1 position
Put, read the drift angle of two turntables, be light shaft offset error in focussing process.
The present invention can quickly, the stability of measure batch lens focusing optical axis pick out quality product, using tooling device
Few, simple to operation, detector lens can focus the stability of optical axis in the case of there is no ccd sensor, the present invention carries
For the method for detection optical axis stability be suitable for all camera lenses with focus adjusting mechanism, and other have the optics instrument that focusing aims at
Device.
Brief description
Fig. 1：The structural representation of optical axis stable in detector lens focussing process
Pipe is adjusted in 1- inspection, and pipe distance adjusting handle, the tested camera lens of 3-, 4- lens focusing ring, 5- high accuracy interior focusing are adjusted in 2- inspection
Telescope, 6- high accuracy two dimensional turntable, 7- platform；
Fig. 2：As X1, Y1 is the picture to infinite point for the lens focusing to the cross that monitor shows
Specific embodiment
In conjunction with embodiment, accompanying drawing, the invention will be further described：
Now by following steps, this method is described in detail：
Step 1：First camera lens 3 is fixed on platform 7, the image space axis be aligned interior focusing autocollimator 5 of camera lens, interior tune
Burnt autocollimator is placed in dimensional turntable 6；Pipe 1 is adjusted in the object space be aligned inspection of camera lens；
Step 2：After fixation, adjustment lens focusing ring 4 makes lens focus arrive infinite point.Place one in the object space of camera lens 3
Platform inspection adjust pipe 1, adjustment inspection adjust pipe apart from adjusting handle 2, so that graticle is located at object lens focal plane, to provide infinity target.
Place a high accuracy internal focusing telescope in the image space of camera lens 3, internal focusing telescope is placed on high-precision two-dimensional turntable 6,
The condenser lens of adjustment high-precision digital-display dimensional turntable and internal focusing telescope so as to focus on camera lens as on square focal plane, this
When token monitor on cross picture position X1, Y1.
Step 3：Then rotate inspection adjust pipe apart from adjusting handle 2, so that graticle is axially moved to object lens direction, to carry
For limited remote target.By adjusting the focusing ring 4 of camera lens, adjusting the image breaking up plate to cross on monitor is in clear state,
The position X2 of mark now cross differentiation plate picture, Y2. make cross break up plate as X2 by adjusting high-precision two-dimensional turntable, and Y2 moves
To cross as X1, the position of Y1, write down the angular deviation of two-dimentional digital display turntable.
The 2nd can be repeated several times, record and X1, the angular deviation of Y1, even if optical axis is stable inclined in focussing process
Difference.
Claims (3)
1. a kind of method of detection optical lens optical axis stable in focussing process is it is characterised in that step is as follows：
Step 1：Camera lens (3) is fixed on platform (7), image space axis be aligned interior focusing autocollimator (5) of camera lens, interior focusing
Autocollimator is placed in dimensional turntable (6)；Pipe 1 is adjusted in the object space be aligned inspection of camera lens；
Step 2：Lens focusing ring is focused to infinite point, inspection adjusts the graticle of pipe to be located at object lens focal plane so as to provide no
Remote target thoroughly；
The condenser lens of adjustment interior focusing autocollimator (5), makes the cross picture of interior focusing autocollimator (5) burnt with the image space of camera lens
Face overlaps, mark now monitor cross image position X1, Y1；
Step 3：Rotate inspection tune pipe makes graticle in axial direction move to object lens apart from adjusting handle so as to provide limited remote
Target；Adjust the focusing ring of camera lens afterwards, make monitor show now cross image position X2, Y2；
Adjustment dimensional turntable orientation and pitching, by X2, Y2 cross picture movement to X1, the position of Y1, record now dimensional turntable
Drift angle, is optical axis deviation in focussing process, represents focusing optical axis stable with the difference of contrast.
2. according to claim 1 detection optical lens optical axis stable in focussing process method it is characterised in that：
Step 3 is repeated several times and records multiple optical axis deviation data, with when the secondary optical axis deviation obtaining and previous or front light several times
Axle deviation is contrasted, and represents focusing optical axis stable with the difference of contrast.
3. according to claim 1 detection optical lens optical axis stable in focussing process method it is characterised in that：
Described camera lens (3) is the camera lens with focus adjusting mechanism, and other have the optical device that focusing aims at.
Priority Applications (1)
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| CN201610905012.8A CN106405856A (en) | 2016-10-18 | 2016-10-18 | Method for detecting optical axis stability of optical lens during focusing process |
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| CN201610905012.8A CN106405856A (en) | 2016-10-18 | 2016-10-18 | Method for detecting optical axis stability of optical lens during focusing process |
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| CN106918309A (en) * | 2017-02-22 | 2017-07-04 | 中国科学院上海光学精密机械研究所 | The measurement apparatus and its measuring method of electro-optic crystal light pass surface normal and Z axis deflecting angle |
| CN106918310A (en) * | 2017-02-22 | 2017-07-04 | 中国科学院上海光学精密机械研究所 | Contactless electro-optic crystal light pass surface normal deviates angle measuring device and its measuring method with Z axis |
| CN107328713A (en) * | 2017-06-20 | 2017-11-07 | 安徽徽智科学仪器有限公司 | The alignment device of correlation atmospheric trace gas infrared detection equipment |
| CN109151461A (en) * | 2018-10-17 | 2019-01-04 | 孝感华中精密仪器有限公司 | A kind of test method of high-precision tracking camera focusing optical jitter amount |
| CN109632264A (en) * | 2018-12-29 | 2019-04-16 | 中国科学院西安光学精密机械研究所 | A kind of detection device and method of photographic device environmental test stability |
| CN109798865A (en) * | 2017-11-16 | 2019-05-24 | 上海微电子装备（集团）股份有限公司 | A kind of the optical axis direct detection device and detection method of zoom system, pancreatic system |
| CN110440929A (en) * | 2019-09-17 | 2019-11-12 | 昆明北方红外技术股份有限公司 | Thermal imaging system datum clamp face deviation eliminates Method of Adjustment |
| CN110954084A (en) * | 2019-11-04 | 2020-04-03 | 中国科学院西安光学精密机械研究所 | A mobile mirror group attitude measurement device and measurement method |
| CN111610640A (en) * | 2020-07-01 | 2020-09-01 | 中国科学院上海技术物理研究所 | A device and method for matching a high-precision assembly optical axis with a guide rail moving axis |
| CN113655585A (en) * | 2021-07-28 | 2021-11-16 | 中国科学院西安光学精密机械研究所 | A method for adjusting and detecting a zoom imaging lens |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918309A (en) * | 2017-02-22 | 2017-07-04 | 中国科学院上海光学精密机械研究所 | The measurement apparatus and its measuring method of electro-optic crystal light pass surface normal and Z axis deflecting angle |
| CN106918310A (en) * | 2017-02-22 | 2017-07-04 | 中国科学院上海光学精密机械研究所 | Contactless electro-optic crystal light pass surface normal deviates angle measuring device and its measuring method with Z axis |
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| CN107328713A (en) * | 2017-06-20 | 2017-11-07 | 安徽徽智科学仪器有限公司 | The alignment device of correlation atmospheric trace gas infrared detection equipment |
| CN109798865A (en) * | 2017-11-16 | 2019-05-24 | 上海微电子装备（集团）股份有限公司 | A kind of the optical axis direct detection device and detection method of zoom system, pancreatic system |
| CN109151461A (en) * | 2018-10-17 | 2019-01-04 | 孝感华中精密仪器有限公司 | A kind of test method of high-precision tracking camera focusing optical jitter amount |
| CN109632264A (en) * | 2018-12-29 | 2019-04-16 | 中国科学院西安光学精密机械研究所 | A kind of detection device and method of photographic device environmental test stability |
| CN110440929A (en) * | 2019-09-17 | 2019-11-12 | 昆明北方红外技术股份有限公司 | Thermal imaging system datum clamp face deviation eliminates Method of Adjustment |
| CN110954084A (en) * | 2019-11-04 | 2020-04-03 | 中国科学院西安光学精密机械研究所 | A mobile mirror group attitude measurement device and measurement method |
| CN111610640A (en) * | 2020-07-01 | 2020-09-01 | 中国科学院上海技术物理研究所 | A device and method for matching a high-precision assembly optical axis with a guide rail moving axis |
| CN113655585A (en) * | 2021-07-28 | 2021-11-16 | 中国科学院西安光学精密机械研究所 | A method for adjusting and detecting a zoom imaging lens |
| CN113655585B (en) * | 2021-07-28 | 2022-08-05 | 中国科学院西安光学精密机械研究所 | Method for adjusting and detecting zoom imaging lens |
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Application publication date: 20170215 |