CN102736259A - Centering method and device for lens assembly - Google Patents
Centering method and device for lens assembly Download PDFInfo
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- CN102736259A CN102736259A CN2012102415429A CN201210241542A CN102736259A CN 102736259 A CN102736259 A CN 102736259A CN 2012102415429 A CN2012102415429 A CN 2012102415429A CN 201210241542 A CN201210241542 A CN 201210241542A CN 102736259 A CN102736259 A CN 102736259A
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- graticule
- pointolite
- light splitting
- lens
- splitting piece
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Abstract
The invention discloses a centering method and a centering device for lens assembly. The method is characterized by comprising the following steps of: designing a point light source (1); and converging light rays of the point light source (1) on a first partition plate (4) through a light filter (2) by a first collimation lens (3), enabling the converged light ray to enter a light splitting sheet (5) and a convergence lens (6), then converging on a spherical center of a spherical reflection surface of a lens (7) to be positioned at an assembly position, enabling a spherical reflection image to enter the light splitting sheet (5) through the convergence lens (6), then refracting and converging the spherical reflection image onto a second partition plate (8) to form an image, enabling the light ray to enter a charge coupled device (CCD) camera (9) through a second collimation lens (10) for imaging, contrasting the images of the first partition plate (4) and the second partition plate (8) in the CCD camera (9), performing fine adjustment on the position of the lens (7) to be positioned at the assembly position so that the images of the first partition plate (4) and the second partition plate (8) in the CCD camera (9) are superposed or the offset of the images of the first partition plate (4) and the second partition plate (8) in the CCD camera (9) is in an allowable range. The method is simple and high in precision; and the detection and centering speed is high.
Description
Technical field
The present invention relates to the spotting device of use in a kind of optical mirror slip installation; The centering mode of especially a kind of non-contact optical element and system; This method can observe the deviation of lens surface and surperficial image of spherical center; It can be used on the centering assembling process like catoptron, lens or telescopic system, specifically a kind of method and device of eyeglass assembling centering.
Background technology
At present, in the precision centering process of optical measurement and optical mirror slip, for obtaining better camera lens or Performance of Optical System, accurately eyeglass centering technology is necessary means.In the rotational symmetry system, the eccentric adjustment of lens is crucial installation step.In order to realize the result of outstanding optical design well, lens need as much as possible accurately processing, and, ideally be assemblied on the unique optical axis.If veteran deviser possesses advanced optical design software and up-to-date computing machine, outstanding optical design meeting is than obtained more easily in the past.Utilization moves picture interferometer and automatic polishing machine, and lens surface polishing precision can reach the nm rank.In order to realize outstanding design result fully, and embody the value of precise polished lens processing, lens should reduce the eccentric error that assembles as much as possible when assembling.Do not have careful and accurate assembly work, the input in optical design and the processing of accurate eyeglass is all with irrevocably lost.Compare with advanced person's design, existing assembling means is difficult to satisfy the demand, and usually causes assembly precision different, a series of problems such as inefficiency.
Summary of the invention
The objective of the invention is to be directed against the requirement that existing assembling means is difficult to adapt to advanced design, the assembling centering precision is not high, and the problem of inefficiency is invented a kind of eyeglass assembling spotting device that quick precision centering is arranged, and a kind of centring means that matches is provided simultaneously.
One of technical scheme of the present invention is:
A kind of method of eyeglass assembling centering, it may further comprise the steps its characteristic:
At first, pointolite 1 of design;
Secondly, optical filter 2, first collimating mirror 3, first graticule 4, light splitting piece 5 are installed successively and are converged camera lens 6 in a side of pointolite, a side that converges camera lens 6 is relative with light splitting piece 5, at the opposite side that converges camera lens 6 coordination positioning mirror sheet 7 to be installed is installed; The light of pointolite 1 converges at first graticule, 4 places through optical filter 2 through first collimating mirror 3; The light of pointolite is through the first graticule 4 back irradiations formation image entering light splitting piece 5; Then; Entering is converged camera lens 6 backs and is converged at the centre of sphere place of the spherical reflective surface of coordination positioning mirror sheet 7 to be installed; Promptly converge at the opal picture place of reflecting sphere; Through the spherical reflective surface light reflected of coordination positioning mirror sheet 7 to be installed again through converge camera lens 6 get into light splitting pieces 5 back reflections converge to first graticule, 4 vertically arranged second graticules 8 on form image, get into 9 imagings of CCD cameras through second collimating mirror 10 again, first graticule 4 and the image of second graticule 8 in CCD camera 9 are compared (can directly in camera, observe; Also can send in the computing machine and compare), promptly can observe the offset that eyeglass 7 spherical reflective surface are located in position to be assembled;
At last, finely tune the position of coordination positioning mirror sheet 7 to be installed, make first graticule 4 and second graticule 8 in CCD camera 9 as overlapping or be in the scope of a permission and get final product.
Described pointolite is Halogen lamp LED or common bulb.
Described light splitting piece 5 is semi-transparent semi-reflecting light splitting piece.
Described coordination positioning mirror sheet 7 to be installed is a double lens, and twin-lens two sphere off-centre are monitored in the operation of feeling relieved respectively from the both sides of coordination positioning mirror sheet 7 to be installed simultaneously, and the optical axis of lens can directly be confirmed and adjust like this.
Two of technical scheme of the present invention is:
A kind of eyeglass assembling centring means; It comprises pointolite 1 its characteristic; This pointolite 1 is installed in an end of whole device; Its effect is for producing the cruciform division line light source to be provided; The other end of whole device be equipped with need centering treat adjustment assembling eyeglass 7, optical filter 2, first collimating mirror 3, first graticule 4, light splitting piece 5 are installed successively and converge camera lens 6 in a side of pointolite, described pointolite 1, optical filter 2, first collimating mirror 3, first graticule 4, light splitting piece 5, the center of converging camera lens 6 and waiting to adjust assembling eyeglass 7 are arranged in line; A side that converges camera lens 6 is relative with light splitting piece 5, at the opposite side that converges camera lens 6 the fine-tuning coordination positioning mirror sheet 7 to be installed in position is installed; The light of pointolite 1 converges at first graticule, 4 places through optical filter 2 through first collimating mirror 3; The light of pointolite is through the first graticule 4 back irradiations formation image entering light splitting piece 5; Then; Entering is converged camera lens 6 backs and is converged at the centre of sphere place of the spherical reflective surface of coordination positioning mirror sheet 7 to be installed; Promptly converge at the opal picture place of reflecting sphere, through the spherical reflective surface light reflected of coordination positioning mirror sheet 7 to be installed again through converge camera lens 6 get into light splitting pieces 5 back reflections converge to first graticule, 4 vertically arranged second graticules 8 on form image, get into 9 imagings of CCD cameras through second collimating mirror 10 that is installed in second graticule, 8 one sides again; The center of described second graticule 8, second collimating mirror 10 and CCD camera 9 becomes another straight line, and described two straight lines are vertical each other.
Described pointolite is Halogen lamp LED or common bulb.
Described light splitting piece 5 is semi-transparent semi-reflecting light splitting piece.
Beneficial effect of the present invention:
Even after utilizing the inventive method lens to put into lens barrel; The off-centre of the measurement of Lens summit and the centre of sphere accurately still; Adjust the inclination of each sheet lens and leave axle through the position of observing imaging; Until each lens face all measures and do not have off-centre, total system can reach an accurate assembly precision.
The present invention utilizes spheric reflection to confirm the accurately offset of measurement of Lens two sides sphere of lens off-centre through sending divergent beams, in assembling, can the inclination and the off-centre of lens be adjusted to a micron order and a second class precision.
CCD phase function of the present invention realizes automatic reception and in software, handles the eccentric concrete amount that provides automatically.
The present invention can use in the assembling of mobile lens, astronomical telescope head even terahertz optics system widely.
The inventive method is simple, is easy to realize, relevant optical system and the components and parts that are equipped with are conventional components and parts.
Apparatus of the present invention are simple, make easy to installly, have the efficient height, the characteristics that precision is controlled.
Description of drawings
Fig. 1 is centering principle of the present invention and system schematic.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Embodiment one.
As shown in Figure 1.
A kind of eyeglass assembling centring means; Comprise pointolite 1 (can be Halogen lamp LED or common bulb); This pointolite 1 is installed in an end of whole device; Its effect is for producing the cruciform division line light source to be provided; The other end of whole device be equipped with need centering treat adjustment assembling eyeglass 7, optical filter 2, first collimating mirror 3, first graticule 4, light splitting piece 5 (should adopt semi-transparent semi-reflecting structure) are installed successively and converge camera lens 6 in a side of pointolite, described pointolite 1, optical filter 2, first collimating mirror 3, first graticule 4, light splitting piece 5, converge camera lens 6 and wait to adjust the center of assembling eyeglass 7 and arrange in line; A side that converges camera lens 6 is relative with light splitting piece 5, at the opposite side that converges camera lens 6 the fine-tuning coordination positioning mirror sheet 7 to be installed in position is installed; The light of pointolite 1 converges at first graticule, 4 places through optical filter 2 through first collimating mirror 3; The light of pointolite is through the first graticule 4 back irradiations formation image entering light splitting piece 5; Then; Entering is converged camera lens 6 backs and is converged at the centre of sphere place of the spherical reflective surface of coordination positioning mirror sheet 7 to be installed; Promptly converge at the opal picture place of reflecting sphere, through the spherical reflective surface light reflected of coordination positioning mirror sheet 7 to be installed again through converge camera lens 6 get into light splitting pieces 5 back reflections converge to first graticule, 4 vertically arranged second graticules 8 on form image, get into 9 imagings of CCD cameras through second collimating mirror 10 that is installed in second graticule, 8 one sides again; The center of described second graticule 8, second collimating mirror 10 and CCD camera 9 becomes another straight line, and described two straight lines are vertical each other.
Embodiment two.
As shown in Figure 1.
At first, pointolite 1 of design; Pointolite 1 can adopt Halogen lamp LED or common bulb;
Secondly; Optical filter 2, first collimating mirror 3, first graticule 4, light splitting piece 5 are installed successively and are converged camera lens 6 in a side of pointolite; The side and the semi-transparent semi-reflecting light splitting piece 5 that converge camera lens 6 are relative, at the opposite side that converges camera lens 6 coordination positioning mirror sheet 7 to be installed are installed; The light of pointolite 1 converges at first graticule, 4 places through optical filter 2 through first collimating mirror 3; The light of pointolite through first graticule 4 back part irradiation formation images (cross curve) get into light splitting pieces 5 directly refraction get into first collimating mirror, 3 vertically arranged second collimating mirrors 10 after send in the CCD camera and form images; Converging camera lens 6 backs through another part light process light splitting piece 5 entering of first graticule 4 converges at the centre of sphere place of the spherical reflective surface of coordination positioning mirror sheet 7 to be installed; Promptly converge at the opal picture place of reflecting sphere; Spherical reflective surface light reflected through coordination positioning mirror sheet 7 to be installed converges to the image (another cross curve) that forms the off-centre and first graticule, 4 information that have coordination positioning mirror sheet 7 to be installed on first graticule, 4 vertically arranged second graticules 8 through converging the 5 back refractions of camera lens 6 entering light splitting pieces again; Get into 9 imagings of CCD camera through second collimating mirror 10 again; First graticule 4 and the image (cross curve) of second graticule 8 in CCD camera 9 compared (can directly in the CCD camera, contrast; Also can image be sent in the computing machine and compare), promptly can observe the offset that eyeglass 7 spherical reflective surface are located in position to be assembled;
At last, finely tune the position of coordination positioning mirror sheet 7 to be installed, make first graticule 4 and second graticule 8 image (two cross curve) in CCD camera 9 overlapping or be in the scope of a permission and get final product.
Can find out that from Fig. 1 the line direction of second graticule 8, second collimating mirror 10 is perpendicular to the line direction of first collimating mirror 3 and first graticule 4.
Can be found out that by Fig. 1 pointolite converges at the first graticule place through optical filter, collimating mirror, graticule gets into through light splitting piece and converges camera lens then; Light converges at the centre of sphere place of tested reflecting surface, promptly converges at the opal picture place of reflecting sphere, through getting into light splitting piece through converging camera lens after the spheric reflection; Converge on another differentiation plate; Get into the CCD imaging through another collimating mirror again, the picture of graticule 1 compares with graticule 2, can observe the offset of spherical reflective surface.Focus is converged in outgoing adjust to the centre of sphere place of tested sphere and the opal picture place of reflecting sphere; All emergent raies all impinge perpendicularly on reflecting sphere so; Therefore; All emergent raies will be by former outgoing route retrieval system, and incides on the CCD through converging camera lens, catoptron, collimation camera lens.When the focal length that converges camera lens was sufficiently long, this method also can be used for the misalignment measurement of convex surface reflecting sphere.When the centre of sphere and said measuring system existence skew or inclination; Can there be tangible the skew in last two the alleged pictures that break up plates of CCD; The picture of two graticules that CCD is obtained when the centre of sphere overlaps with the output focus of system will clearly overlap, and can judge the offset error or the droop error of reflecting sphere according to the pictures different situation.
Also can be with two covers system shown in Figure 1, two sphere off-centre of coming to monitor respectively, simultaneously lens, the optical axis of lens can directly be confirmed and adjust like this.
Light trend of the present invention is:
Pointolite 1 (Halogen lamp LED or common bulb) converges at first graticule, 4 places through optical filter 2, collimating mirror 3; The picture of graticule (cross curve) gets into through light splitting piece 5 and converges camera lens 6 then, and light converges at the centre of sphere place of tested reflecting surface 7, promptly converges at the opal picture place of reflecting sphere 7; Get into light splitting piece 5 through sphere 7 reflection backs again through converging camera lens 6; Converge on another differentiation plate 8, get into the CCD9 imaging through another collimating mirror 10 again, the picture of graticule 4 compares with graticule 8; Can observe the offset of spherical reflective surface, finely tune the position of coordination positioning mirror sheet 7 to be installed and can realize assembling centering.
The present invention does not relate to all identical with the prior art prior art that maybe can adopt of part and realizes.
Claims (7)
1. an eyeglass assembles the method for feeling relieved, and it may further comprise the steps its characteristic:
At first, a design pointolite (1);
Secondly; Optical filter (2), first collimating mirror (3), first graticule (4), light splitting piece (5) are installed successively and are converged camera lens (6) in a side of pointolite; The side and the light splitting piece (5) that converge camera lens (6) are relative, at the opposite side that converges camera lens (6) coordination positioning mirror sheet to be installed (7) are installed; The light of pointolite (1) converges at first graticule (4) through optical filter (2) through first collimating mirror (3) and locates; The light of pointolite forms image through the irradiation of first graticule (4) back and gets into light splitting piece (5); Then; Entering is converged camera lens (6) back and is converged at the centre of sphere place of the spherical reflective surface of coordination positioning mirror sheet to be installed (7); Promptly converge at the opal picture place of reflecting sphere; The spherical reflective surface light reflected of passing through coordination positioning mirror sheet to be installed (7) converges to and the last formation of vertically arranged second graticule of first graticule (4) (8) image through converging camera lens (6) entering light splitting piece (5) back reflection again; Get into CCD camera (9) imaging through second collimating mirror (10) again, first graticule (4) and the image of second graticule (8) in CCD camera (9) are compared, promptly can observe the offset of location, position to be assembled eyeglass (7) spherical reflective surface;
At last, finely tune the position of coordination positioning mirror sheet to be installed (7), first graticule (4) and second graticule (8) being in the scope of a permission as overlapping or deviation in CCD camera (9) got final product.
2. spotting device according to claim 1, the described pointolite of its characteristic is Halogen lamp LED or common bulb.
3. spotting device according to claim 1 is characterized in that described light splitting piece (5) is semi-transparent semi-reflecting light splitting piece.
4. spotting device according to claim 1; When it is characterized in that described coordination positioning mirror sheet to be installed (7) for double lens; The operation of feeling relieved respectively from the both sides of coordination positioning mirror sheet to be installed (7); Monitor twin-lens two sphere off-centre simultaneously, the optical axis of lens can directly be confirmed and adjust like this.
5. an eyeglass assembles centring means; It comprises pointolite (1) its characteristic; This pointolite (1) is installed in an end of whole device; Its effect is for producing the cruciform division line light source to be provided; The other end of whole device be equipped with need centering treat adjustment assembling eyeglass (7), optical filter (2), first collimating mirror (3), first graticule (4), light splitting piece (5) are installed successively and converge camera lens (6) in a side of pointolite, described pointolite (1), optical filter (2), first collimating mirror (3), first graticule (4), light splitting piece (5), converge camera lens (6) and wait that adjusting the center of assembling eyeglass (7) arranges in line; The side and the light splitting piece (5) that converge camera lens (6) are relative, at the opposite side that converges camera lens (6) the fine-tuning coordination positioning mirror sheet to be installed (7) in position are installed; The light of pointolite (1) converges at first graticule (4) through optical filter (2) through first collimating mirror (3) and locates; The light of pointolite forms image through the irradiation of first graticule (4) back and gets into light splitting piece (5); Then; Entering is converged camera lens (6) back and is converged at the centre of sphere place of the spherical reflective surface of coordination positioning mirror sheet to be installed (7); Promptly converge at the opal picture place of reflecting sphere; The spherical reflective surface light reflected of passing through coordination positioning mirror sheet to be installed (7) converges to and the last formation of vertically arranged second graticule of first graticule (4) (8) image through converging camera lens (6) entering light splitting piece (5) back reflection again; Get into CCD camera (9) imaging through second collimating mirror (10) that is installed in second graticule (8) one sides again, the center of described second graticule (8), second collimating mirror (10) and CCD camera (9) becomes another straight line, and described two straight lines are vertical each other.
6. device according to claim 5, the described pointolite of its characteristic is Halogen lamp LED or common bulb.
7. device according to claim 5 is characterized in that described light splitting piece (5) is semi-transparent semi-reflecting light splitting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102415429A CN102736259A (en) | 2012-07-13 | 2012-07-13 | Centering method and device for lens assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102415429A CN102736259A (en) | 2012-07-13 | 2012-07-13 | Centering method and device for lens assembly |
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| CN102736259A true CN102736259A (en) | 2012-10-17 |
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| CN2012102415429A Pending CN102736259A (en) | 2012-07-13 | 2012-07-13 | Centering method and device for lens assembly |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048760A (en) * | 2012-11-20 | 2013-04-17 | 北京空间机电研究所 | Optical filter installation method |
| CN106383396A (en) * | 2016-10-31 | 2017-02-08 | 中国科学院西安光学精密机械研究所 | Micron-scale photoelectric centering method and device based on surface reflection image |
| CN110111630A (en) * | 2019-04-29 | 2019-08-09 | 中国人民解放军战略支援部队航天工程大学士官学校 | Analogy method, device and the electronic equipment of device assembling training |
| CN110514407A (en) * | 2019-07-17 | 2019-11-29 | 江西吉铖光电有限公司 | A kind of optical detecting instrument and its detection method and eccentric adjusting process |
-
2012
- 2012-07-13 CN CN2012102415429A patent/CN102736259A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048760A (en) * | 2012-11-20 | 2013-04-17 | 北京空间机电研究所 | Optical filter installation method |
| CN103048760B (en) * | 2012-11-20 | 2015-02-11 | 北京空间机电研究所 | Optical filter installation method |
| CN106383396A (en) * | 2016-10-31 | 2017-02-08 | 中国科学院西安光学精密机械研究所 | Micron-scale photoelectric centering method and device based on surface reflection image |
| CN110111630A (en) * | 2019-04-29 | 2019-08-09 | 中国人民解放军战略支援部队航天工程大学士官学校 | Analogy method, device and the electronic equipment of device assembling training |
| CN110514407A (en) * | 2019-07-17 | 2019-11-29 | 江西吉铖光电有限公司 | A kind of optical detecting instrument and its detection method and eccentric adjusting process |
| CN110514407B (en) * | 2019-07-17 | 2021-08-24 | 江西吉铖光电有限公司 | Optical detection instrument and detection method and eccentricity adjustment method thereof |
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Application publication date: 20121017 |