CN100368847C - Method and tool for centering processing of lens - Google Patents
Method and tool for centering processing of lens Download PDFInfo
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- CN100368847C CN100368847C CNB2004100802348A CN200410080234A CN100368847C CN 100368847 C CN100368847 C CN 100368847C CN B2004100802348 A CNB2004100802348 A CN B2004100802348A CN 200410080234 A CN200410080234 A CN 200410080234A CN 100368847 C CN100368847 C CN 100368847C
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Abstract
The present invention provides a method for centering processing of a lens and a centering processing clamp. The method comprises the steps that a first clamping assembly and a second clamping assembly are used to clamp the lens, and the circumference of the lens has no contact surface; a first clamping part of the first clamping assembly approaches closely to the contact surface of the lens so that the lens is aligned with the first clamping assembly in position; the first clamping assembly and the second clamping assembly drive together the lens so that the lens rotates around a rotating shaft of the first clamping assembly so as to process the lens, and the geometric center of the lens is approximate to the axle center of a first surface of the lens after processing. In the method, the lens can be fixedly aligned with the first clamping assembly in the process of centering processing, and thus, the precision of the centering processing is raised.
Description
Technical field
The invention relates to a kind of clamp for machining and job operation of lens, and particularly about a kind of centering clamp for machining of lens and the invention of transverse alignment processing method.
Background technology
In the at present common optical instrument, for example projector (projector), camera (camera), microscope (microscope) and telescope (telescope) etc. are formed its camera lens with a plurality of lens mostly.Therefore, the degree of accuracy of these optical instruments is closely bound up with the machining precision of lens.Wherein, the most important with the centering processing of lens again.
Fig. 1 is the diagrammatic cross-section of known spherical lens in the centering clamp for machining.Please refer to Fig. 1, in the centering process of spherical lens 102, normally utilize anchor clamps 100 clamping spherical lenses 102 earlier, drive spherical lens 102 rotations by anchor clamps 100 again.Because the curved surface 103 of spherical lens 102 overlaps with the axle center of curved surface 105, therefore when anchor clamps 100 and spherical lens 102 with anchor clamps 100 among axle C to be that the axle center is done stable when rotating (stable rotate), the lens center of spherical lens 102 is positioned on the central shaft of anchor clamps, that is to say that the curved surface 103 of spherical lens 102 overlaps with the central shaft C of anchor clamps 100 with the axle center of curved surface 105.At this moment, can carry out the processing of spherical lens 102, and on the connecting line in the curved surface 103 that the geometric center of spherical lens 102 after the processing will be positioned at spherical lens 102 and the axle center of curved surface 105.
Yet; for non-spherical lens; owing to can have side-play amount usually between the axle center of two curved surfaces of non-spherical lens; so utilize said method can't accurately find the lens center of non-spherical lens; thereby can't control the centering processing of non-spherical lens effectively, and the geometric center of the non-spherical lens after the processing is positioned on the axle center of two curved surfaces of non-spherical lens.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of transverse alignment processing method of lens, the accuracy of processing with the centering that improves lens.
Another object of the present invention provides a kind of centering clamp for machining of lens, can make lens accurately with position alignment thereon, so that carry out the centering processing of lens.
The present invention proposes a kind of transverse alignment processing method of lens, and lens at first are provided, and these lens have first surface and second surface, and first surface is made of main curved surface, surface of contact and break over region.Wherein, surface of contact is positioned at edge outside the main curved surface, and is connected with main curved surface by the break over region.Then, provide first clamp assemblies and second clamp assemblies, wherein first clamp assemblies comprises first clamping part, and second clamp assemblies comprises second clamping part, and first clamping part has a clamping face.Afterwards, the first clamping part inner edge with first clamp assemblies is abutted against on the break over region of lens.At this, the axle center of the first surface of lens overlaps with the turning axle of first clamp assemblies.
Then, second clamp assemblies is abutted against the second surface of lens, with the common clamping lens of first clamp assemblies.Then allow first clamp assemblies and the common drive lens of second clamp assemblies be that the center rotates again, so that lens are processed with the turning axle of first clamp assemblies.
The present invention's lenses centering clamp for machining is abutted against surface of contact in lens by its first clamping part, therefore the present invention's lenses centering clamp for machining can be aimed at lens (or even non-spherical lens) completing place easily, and then the axle center of the first surface of lens is overlapped with the turning axle of first clamp assemblies.
State with other purpose, feature and advantage and can become apparent on the present invention for allowing, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Embodiment
The present invention can make lens be positioned on the clamp for machining easily, so that the processing technology of feeling relieved.To be example explanation the present invention below, but it be not in order to limit the present invention with the higher non-spherical lens of single face photosensitivity.The ordinary skill of technical field that the present invention belongs to can be done variation to following embodiment slightly according to the present invention's thought, precisely because still belong in the present invention's the scope.
Before carrying out the centering processing technology of non-spherical lens, must provide non-spherical lens earlier and in order to the lenses centering clamp for machining of clamping non-spherical lens.Below lenses centering clamp for machining used herein and non-spherical lens to be processed will be described earlier.
The cut-open view and the vertical view thereof of the non-spherical lens that Fig. 2 A and Fig. 2 B process for desiring among the present invention to feel relieved.Please refer to Fig. 2 A and Fig. 2 B, non-spherical lens 200 has first surface 210 and second surface 220, and first surface 210 is made of main curved surface 212, surface of contact 214 and break over region 216.Wherein, surface of contact 214 is positioned at the outer rim of main curved surface 212, and break over region 216 then is connected between main curved surface 212 and the surface of contact 214, so that surface of contact 214 and main curved surface 212 have different curvatures with respect to the axle center of lens 200.With the present embodiment is example, and main curved surface 212 is a non-spherical surface, and surface of contact 214 is generally planar annular.In addition, the footpath promptly is the diameter D that Fig. 2 B is indicated within the surface of contact 214, also equals the external diameter of main curved surface 212.Particularly, the first surface 210 of non-spherical lens 200 and non-spherical lens 200 second surfaces 220 have higher light sensitivity (photo sensitivity) by contrast.
Fig. 3 is the diagrammatic cross-section of the present invention's lenses centering clamp for machining.Please refer to Fig. 3, lenses centering clamp for machining 300 mainly is made of first clamp assemblies 310 and second clamp assemblies 320.Wherein, first clamp assemblies 310 comprises first clamping part 312, and this first clamping part for example is a ring gripping portion, and has clamping face 314.320 of second clamp assemblies comprise second clamping part 322, in order to first clamp assemblies, 310 common clampings lens to be processed, for example be non-spherical lens 200 shown in Figure 2.
In addition, first clamp assemblies 310 of the lenses centering clamp for machining 300 of present embodiment can be provided with an aspirating hole 316, and in the centering processing technology, can extract gas between first clamp assemblies 310 and the lens to be processed out by aspirating hole 316, so that form negative pressure space 317 between first clamp assemblies 310 and the lens to be processed, and then make lens to be processed adsorbable on first clamp assemblies 310.
Fig. 4 A to Fig. 4 B is the diagrammatic cross-section of each step of centering work flow of the present invention's non-spherical lens.Please be simultaneously with reference to Fig. 2, Fig. 3 and Fig. 4 A, after non-spherical lens 200 shown in Figure 2 and lenses centering clamp for machining 300 shown in Figure 3 were provided, then first clamping part 312 with first clamp assemblies 310 was abutted against on the surface of contact 214 of non-spherical lens 200.At this, the inner edge 318 of first clamping part 312 is to be abutted against on the break over region 216 of non-spherical lens 200, so that the aiming at of non-spherical lens 200 and first clamp assemblies 310 completing places.At this moment, the axle center O of the first surface 210 of non-spherical lens 200 is positioned on the turning axle R of first clamp assemblies 310.
And, because the inside diameter D (external diameter of just main curved surface 212) of the surface of contact 214 of non-spherical lens 200 is similar to the internal diameter L of first clamping part 312 of first clamp assemblies 310, thereby make edge 318 within first clamping part 312 fully abut against the break over region 216 of non-spherical lens 200, to keep the relative position of the non-spherical lens 200 and first clamp assemblies 310.Wherein, the error between the internal diameter L of first clamping part 312 of the inside diameter D of the surface of contact 214 of non-spherical lens 200 and first clamp assemblies 310 can be less than 1 micron.In actual process, for example be when the mould Design and Machining of aspheric surface mold pressing, to use the superhigh precision processing machine, can be in 0.001mm with the error control between the internal diameter L of first clamping part 312 of the inside diameter D of the surface of contact 214 of non-spherical lens 200 and first clamp assemblies 310, this precision is very favorable to the centering of geometric center.
Please continue A with reference to Fig. 4, the clamping face 314 of first clamping part 312 is close to the surface of contact 214 of non-spherical lens 200 usually, with the fixing position of non-spherical lens 200 on first clamp assemblies 310 positively in process, avoid non-spherical lens 200 run-off the straight in process.It should be noted that, though the clamping face 314 shown in Fig. 4 A is perpendicular to the turning axle R (surface of contact 214 that is to say non-spherical lens 200 is surface level) of first clamp assemblies 310, yet in other embodiment of the present invention, the clamping face 314 of first clamping part 312 also can be an inclined-plane (as shown in Figure 5).Therefore, the present invention does not limit the angle angle of clamping face 314 with the surface level of first clamping part 312, as long as it can be close to the surface of contact (for example being the surface of contact 214 of non-spherical lens 200) of lens to be processed.
Particularly, in one of the present invention preferred embodiment, after can also being abutted against on the surface of contact 214 of non-spherical lens 200 at first clamping part 312 with first clamp assemblies 310, between first clamp assemblies 310 and non-spherical lens 200, form negative pressure space 317, so that non-spherical lens 200 is adsorbed on first clamp assemblies 310, and for example be to utilize the aspirating hole 316 of first clamp assemblies 310 to extract air between first clamp assemblies 310 and the non-spherical lens 200 out, and then form negative pressure space 317.
More particularly, the present invention can also be abutted against at first clamping part 312 with first clamp assemblies 310 before on the surface of contact 214 of non-spherical lens 200, earlier lubricant (not expressing among the figure) is coated on the non-spherical lens 200, in the centering processing technology, non-spherical lens 200 is caused scratch to avoid first clamp assemblies 310.And, in the process of follow-up formation negative pressure space 317, lubricant on the non-spherical lens 200 helps to reduce the gas flow that remains between first clamp assemblies 310 and the non-spherical lens 200, with raising negative pressure effect, and then the absorption affinity between the increase non-spherical lens 200 and first clamp assemblies 310.
Please refer to Fig. 4 B, after the assembling of finishing Fig. 4 A, then is that second clamping part 322 with second clamp assemblies 320 is abutted against the second surface 220 in non-spherical lens 200, with first clamp assemblies, 310 common clamping non-spherical lenses 200.Wherein, second clamp assemblies 320 is preferably soft clamp assemblies.In other words, the profile of second clamping part 322 of second clamp assemblies 320 can change to some extent according to curved surface that it contacted, avoiding in the process of the second surface 220 that is abutted against non-spherical lens 200, and then influence the degree of accuracy that the centering of non-spherical lens 200 is processed because of uneven skew or the inclination that causes non-spherical lens 200 of the application of force.
Please continue B with reference to Fig. 4, after non-spherical lens 200 is clamped it by first clamp assemblies 310 and second clamp assemblies 320, be that the center rotates with turning axle R just then, to carry out the centering processing of non-spherical lens 200 with first clamp assemblies 310, non-spherical lens 200 and second clamp assemblies 320.It should be noted that after machining the geometric center of non-spherical lens 200 will be similar to the axle center of the first surface 210 of non-spherical lens 200.
From the above, the inner edge of the present invention's lenses centering clamp for machining system by its first clamping part is abutted against the break over region in non-spherical lens, therefore the present invention's lenses centering clamp for machining can be aimed at the non-spherical lens completing place easily, and then the axle center of the first surface of non-spherical lens is overlapped with the turning axle of first clamp assemblies.And, the preferably soft clamp assemblies of the present invention's second clamp assemblies, therefore at non-spherical lens with after the first clamp assemblies completing place is aimed at, when next second clamp assemblies being abutted against the second surface of non-spherical lens, can avoid causing non-spherical lens to be offset because of the application of force is uneven or tilting.
In addition, because the internal diameter of the present invention's first clamp assemblies is similar to the internal diameter (external diameter of main curved surface just) of the surface of contact of non-spherical lens, so non-spherical lens and first clamp assemblies closely cooperate.Moreover the present invention can also form negative pressure space between first clamp assemblies and non-spherical lens, so that non-spherical lens is adsorbed on first clamp assemblies.And, increase to strengthen adsorption effect for making the negative pressure effect between first clamp assemblies and non-spherical lens, can also on minute surface, add lubricant, so that lens surface and anchor clamps contact region fluid-tight engagement, and Castor Oil and anti-scratch lens surface.Hence one can see that, and the present invention can be fixed in non-spherical lens on first clamp assemblies effectively, to avoid non-spherical lens that skew takes place in the centering processing technology or to tilt and the degree of accuracy of influence processing.
In sum, the present invention can add man-hour feeling relieved, fast absorption is aimed at and given to lens position, to reach the effect of automated job, and then the precision of the centering processing of raising lens, with the geometric center of the lens after the control processing effectively and the side-play amount between the curved surface axle center, and then improve the production qualification rate of lens.And the lens group that the non-spherical lens that utilizes the present invention's method to process is assembled optical instrument also can obtain good assembled yield.
Though the present invention with preferred embodiment openly as above; right its is not in order to limit the present invention; the ordinary skill of any technical field that the present invention belongs to; in thought that does not break away from the present invention and scope; when can doing a little change and improvement, so the present invention's protection domain is as the criterion when looking claims person of defining.
Description of drawings
Fig. 1 is the diagrammatic cross-section of known spherical lens in the centering clamp for machining.
Fig. 2 A and Fig. 2 B are respectively the diagrammatic cross-section and the vertical view of the non-spherical lens of the processing of desiring among the present invention to feel relieved.
Fig. 3 is the diagrammatic cross-section of the present invention's lenses centering clamp for machining.
Fig. 4 A to Fig. 4 B is the diagrammatic cross-section of each step of centering work flow of the present invention's non-spherical lens.
Fig. 5 is the diagrammatic cross-section of another embodiment of the present invention.
The primary clustering symbol description
100: anchor clamps
102: spherical lens
103,105: curved surface
200: non-spherical lens
210: first surface
212: main curved surface
214: surface of contact
216: the break over region
220: second surface
300: the centering clamp for machining of lens
310: the first clamp assemblies
312: the first clamping parts
314: clamping face
316: aspirating hole
317: negative pressure space
318: inner edge
320: the second clamp assemblies
322: the second clamping parts
Claims (12)
1. the transverse alignment processing method of lens is characterized in that comprising the following steps:
Lens are provided, said lens has relative first surface and second surface, above-mentioned first surface comprises main curved surface, surface of contact and break over region, wherein above-mentioned surface of contact is positioned at edge outside the above-mentioned main curved surface, and above-mentioned break over region is connected between above-mentioned main curved surface and the above-mentioned surface of contact, makes above-mentioned surface of contact and above-mentioned main curved surface have the curvature of difference with respect to the axle center of said lens;
First clamp assemblies and second clamp assemblies are provided, and wherein above-mentioned first clamp assemblies is provided with first clamping part, and above-mentioned second clamp assemblies is provided with second clamping part, and above-mentioned first clamping part has clamping face;
Be abutted against in stating on the said lens on the surface of contact stating first clamping part on above-mentioned first clamp assemblies, and the axle center of stating first surface on the said lens is overlapped with one of above-mentioned first clamp assemblies turning axle, stating first clamping part on above-mentioned first clamp assemblies is abutted against when stating surface of contact on said lens, above-mentioned clamping face is close to and is stated surface of contact on the said lens, and the inner edge of above-mentioned first clamping part is abutted against in stating on the said lens on the break over region;
Be abutted against and state second surface on the said lens stating second clamping part on above-mentioned second clamp assemblies, with the common clamping said lens of above-mentioned first clamp assemblies; And
Allowing above-mentioned first clamp assemblies and above-mentioned second clamp assemblies drive said lens jointly is that the center rotates to state turning axle on above-mentioned first clamp assemblies, so that said lens is processed.
2. according to the transverse alignment processing method of the described lens of claim 1, it is characterized in that above-mentioned first clamp assemblies is abutted against on said lens, state on the surface of contact after, and allowing above-mentioned two clamp assemblies drive jointly before said lens rotates, also comprise a step, promptly between said lens and above-mentioned first clamp assemblies, form a negative pressure space.
3. according to the transverse alignment processing method of the described lens of claim 2, it is characterized in that above-mentioned first clamp assemblies is provided with an aspirating hole, and the method that forms above-mentioned negative pressure space is via above-mentioned aspirating hole the gas between said lens and above-mentioned first clamp assemblies to be extracted out.
4. according to the transverse alignment processing method of the described lens of claim 1, it is characterized in that stating on above-mentioned first clamp assemblies first clamping part is abutted against before on the said lens, also comprise a step, promptly between said lens and above-mentioned first clamp assemblies, provide lubricant.
5. according to the transverse alignment processing method of the described lens of claim 1, it is characterized in that the said lens that is provided is a non-spherical lens.
6. the centering clamp for machining of lens, be suitable for clamping lens in the centering processing technology, it is characterized in that said lens has first surface and second surface, and above-mentioned first surface comprises main curved surface, surface of contact and break over region, wherein above-mentioned surface of contact is positioned at edge outside the above-mentioned main curved surface, and above-mentioned break over region then is connected between above-mentioned main curved surface and the above-mentioned surface of contact, and the centering clamp for machining of said lens comprises:
First clamp assemblies, be provided with first clamping part, above-mentioned first clamping part has clamping face, and above-mentioned clamping face is close to and is stated surface of contact on the said lens, state first clamping part on above-mentioned first clamp assemblies and be abutted against when stating surface of contact on said lens, the inner edge of above-mentioned first clamping part is abutted against in stating on the said lens on the break over region; And
Second clamp assemblies is provided with second clamping part, in order to the common clamping said lens of above-mentioned first clamp assemblies.
7. according to the centering clamp for machining of the described lens of claim 6, it is characterized in that above-mentioned first clamp assemblies is provided with an aspirating hole, in order in above-mentioned centering processing technology, to discharge the gas between said lens and above-mentioned first clamp assemblies.
8. according to the centering clamp for machining of the described lens of claim 6, it is characterized in that above-mentioned second clamp assemblies is soft clamp assemblies.
9. according to the centering clamp for machining of the described lens of claim 6, it is characterized in that stating on above-mentioned first clamp assemblies within first clamping part directly is to be similar to the internal diameter of stating surface of contact on the said lens.
10. according to the centering clamp for machining of the described lens of claim 9, it is characterized in that stating on above-mentioned first clamp assemblies error between the internal diameter of stating surface of contact within first clamping part on the footpath and said lens less than 1 micron.
11., it is characterized in that said lens is a non-spherical lens according to the centering clamp for machining of the described lens of claim 6.
12., it is characterized in that above-mentioned first clamping part is a ring gripping portion according to the centering clamp for machining of the described lens of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100802348A CN100368847C (en) | 2004-09-28 | 2004-09-28 | Method and tool for centering processing of lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100802348A CN100368847C (en) | 2004-09-28 | 2004-09-28 | Method and tool for centering processing of lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1755408A CN1755408A (en) | 2006-04-05 |
| CN100368847C true CN100368847C (en) | 2008-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100802348A Expired - Fee Related CN100368847C (en) | 2004-09-28 | 2004-09-28 | Method and tool for centering processing of lens |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100582715C (en) * | 2006-12-25 | 2010-01-20 | 鸿富锦精密工业（深圳）有限公司 | Lens eccentricity detection system and method |
| CN101614855B (en) * | 2008-06-24 | 2012-08-29 | 鸿富锦精密工业（深圳）有限公司 | Assembly lens tool |
| KR101948939B1 (en) * | 2011-10-28 | 2019-02-15 | 나카무라 토메 세이미쓰고교 가부시키가이샤 | Method and apparatus for centering of spin finishing of lens |
| CN103372799A (en) * | 2012-04-16 | 2013-10-30 | 豪雅光电科技(苏州)有限公司 | Centering device for lens |
| CN104977691B (en) * | 2015-06-24 | 2017-07-28 | 中国科学院西安光学精密机械研究所 | The method that balsaming lens centering precision is improved based on error distribution method |
| CN111113195A (en) * | 2020-01-20 | 2020-05-08 | 福建福特科光电股份有限公司 | Optical centering edging fixture and method for edging plano-convex cylindrical mirror |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0985602A (en) * | 1995-09-21 | 1997-03-31 | Kiyousera Opt Kk | Centering device for optical lens |
| JPH11179641A (en) * | 1997-12-17 | 1999-07-06 | Canon Inc | Lens centering clamp device and lens centering machine using same |
| JP2000141194A (en) * | 1998-11-12 | 2000-05-23 | Olympus Optical Co Ltd | Device and method for machining outer periphery of lens |
| JP2000322756A (en) * | 1999-05-11 | 2000-11-24 | Sharp Corp | Objective lens for optical pickup and adjusting method for the same |
| JP2004177609A (en) * | 2002-11-26 | 2004-06-24 | Hitachi Maxell Ltd | Plastic lens and optical pickup device |
| CN1713012A (en) * | 2004-06-26 | 2005-12-28 | 鸿富锦精密工业（深圳）有限公司 | Lens, its machining method and device |
-
2004
- 2004-09-28 CN CNB2004100802348A patent/CN100368847C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0985602A (en) * | 1995-09-21 | 1997-03-31 | Kiyousera Opt Kk | Centering device for optical lens |
| JPH11179641A (en) * | 1997-12-17 | 1999-07-06 | Canon Inc | Lens centering clamp device and lens centering machine using same |
| JP2000141194A (en) * | 1998-11-12 | 2000-05-23 | Olympus Optical Co Ltd | Device and method for machining outer periphery of lens |
| JP2000322756A (en) * | 1999-05-11 | 2000-11-24 | Sharp Corp | Objective lens for optical pickup and adjusting method for the same |
| JP2004177609A (en) * | 2002-11-26 | 2004-06-24 | Hitachi Maxell Ltd | Plastic lens and optical pickup device |
| CN1713012A (en) * | 2004-06-26 | 2005-12-28 | 鸿富锦精密工业（深圳）有限公司 | Lens, its machining method and device |
Also Published As
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| CN1755408A (en) | 2006-04-05 |
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