CN1696752A - Optical lens and set of lens - Google Patents
Optical lens and set of lens Download PDFInfo
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- CN1696752A CN1696752A CN 200410038172 CN200410038172A CN1696752A CN 1696752 A CN1696752 A CN 1696752A CN 200410038172 CN200410038172 CN 200410038172 CN 200410038172 A CN200410038172 A CN 200410038172A CN 1696752 A CN1696752 A CN 1696752A
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- lens
- protuberance
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Abstract
An optical camera lens and its lens set is prepared as setting the first external ring part and at least one convex part on the first lens and setting convex part on the first external ring, notch - grafting the second lens with the first one, setting the second external ring part and at least one concave part on the second lens and placing concave part on the second external ring, leaning the first external ring against on the second one and notch - grafting convex part with concave part.
Description
Technical field
The invention relates to a kind of camera lens (lens), and particularly relevant for a kind of optical lens (optical lens) and lens combination (lens system).
Background technology
In the information society now, various optical systems for example telescope (telescope), camera (camera), microscope (microscope) and optical projection system (optical projectionsystem) etc. all occupy a tiny space in daily life.In addition, in above-mentioned optical system, camera lens (lens) often determines the quality of image, therefore is described further for known lens construction.
Please refer to Fig. 1, it is the cross-sectional view of known camera lens.Known camera lens 100 comprises a sleeve (barrel) 110, one first lens (lens) 120, a dividing plate (baffe) 130, one second lens 140, fixed head 150, optical filter (filter) 160 and charge coupled cell sensor (Charge Coupled Device sensor, CCD sensor) 170.Wherein, sleeve 110 has smooth incident opening (opening) 110a and an accommodation space (receivingspace) 110b, and first lens 120, dividing plate 130, second lens 140 and fixed head 150 all are disposed in the accommodation space 110b in regular turn, and dividing plate 130 is disposed between first lens 120 and second lens 140.In addition, light incident opening 110a exposes part first lens 120, and fixed head 150 has a smooth outgoing opening 150a, exposes part second lens 140.In addition, charge coupled cell sensor 170 is disposed on fixed head 150 light path afterwards, and optical filter 160 is disposed on the light path of fixed head 150 and charge coupled cell sensor 170.
From the above, the key of known camera lens 100 is the contraposition precision of first lens 120 and second lens 140.Under desirable situation, the optical axis of first lens 120 should be consistent with the optical axis of second lens 140, but in fact the optical axis of the optical axis of first lens 120 and second lens 140 is also inconsistent, and the degree of this bit errors will determine the optical property of known camera lens 100.Please refer to magnification region part among the figure, in known camera lens 100, first lens 120 and second lens 140 are by being bearing on the madial wall of sleeve 110, carrying out the contraposition of first lens 120 and second lens 140, so the machining precision of the madial wall of sleeve 110 will influence the aligning accuracy of first lens 120 and second lens 140.Though the sleeve 110 of present stage adopts computer numerical control lathe (computer numerical control lathe usually, CNClathe) or computer numerical control boring machine (computer numerical control boringmachine, CNC boring machine) processes, only be about about 10 microns (micron) but the machining precision of the madial wall of sleeve 110 is the highest.Therefore, the bit errors of first lens 120 and second lens 140 will be greater than more than 5 microns, and adopt the just restriction to some extent of application of the known camera lens 100 of sleeve 110 locator meamss, particularly can't be applied on the high-accuracy optical instrument.Moreover (optical simulationanalysis) for the optical property of known camera lens 100, is described further by the optics simulation analysis.
Please refer to Fig. 2, it is the optics simulation analysis figure of known camera lens.Light 180 is in regular turn via the light outgoing opening 150a and the optical filter 160 of the opening 130a of the light incident opening 110a of sleeve 110, first lens 120, dividing plate 130, second lens 140, fixed head 150, be incident to charge coupled cell sensor 170, wherein part light 180 becomes image light source 180a, part light 180 then becomes useless veiling glare (useless light) 180b, and veiling glare 180b will influence the quality of image.It should be noted that, above-mentioned veiling glare 180b mainly comes from part light 180 and is reflected by optical filter 160, and via the intersection of first lens 120 and second lens 140 reflect again form, perhaps part light 180 is by charge coupled cell sensor 170 reflection, and via fixed head 150 reflect again form.Though the dividing plate 130 that is disposed between first lens 120 and second lens 140 is constituted by the antiradar reflectivity material (lowreflectivity material) of black, its main function is for absorbing veiling glare 180b, and 130 effects that can improve of dividing plate are limited.
Summary of the invention
In view of this, purpose of the present invention is providing a kind of optical lens (optical lens) exactly, has preferable aligning accuracy (alignment precision) between its lens, and improves the influence of veiling glare.
A further object of the present invention provides a kind of lens combination (lens system), to improve the bit errors between lens.
Based on above-mentioned purpose or other purpose, the present invention proposes a kind of optical lens, and it for example comprises a sleeve, one first lens and one second lens.Wherein, sleeve for example has a smooth incident opening and an accommodation space, and wherein accommodation space is connected with light incident opening.In addition, first lens configuration is in accommodation space, and first lens for example have one first outer portion (outer loop) and at least one protuberance (protruding), and wherein protuberance is disposed on first outer portion, and light incident opening exposes part first lens.In addition, second lens configuration is in accommodation space, and interlocking is to first lens, and second lens for example have one second outer portion and at least one recess (recess), wherein recess arrangement is on second outer portion, and first outer portion breasting to the second outer portion, and protuberance and recess interlocking.
According to the described optical lens of preferred embodiment of the present invention, protuberance for example comprises a hemisphere protuberance (hemispheric protruding), and recess for example comprises half ball impression portion (hemispheric recess), and hemisphere protuberance and the interlocking of hemisphere recess.
According to the described optical lens of preferred embodiment of the present invention, protuberance for example comprises an annular convex (annular protruding), and recess for example comprises an annular recessed portion (annularrecess), and annular convex and annular recessed portion interlocking.
According to preferred embodiment of the present invention, optical lens for example more comprises a dividing plate, and it is disposed between first lens and second lens.
According to preferred embodiment of the present invention, optical lens for example more comprises a fixed head, in its configuration accommodation space, and be bearing on second lens, and fixed head has a smooth outgoing opening, exposes part second lens.
According to preferred embodiment of the present invention, optical lens for example more comprises an image capture element, and it is disposed on the fixed head light path afterwards.
According to preferred embodiment of the present invention, optical lens for example more comprises an optical filter, and it is disposed on the light path between fixed head and the image capture element.
Based on above-mentioned purpose or other purpose, the present invention proposes a kind of lens combination, and it for example comprises one first lens and one second lens.Wherein, first lens for example have one first outer portion and at least one protuberance, and protuberance is disposed on first outer portion.In addition, second lens are rabbeted to first lens, and second lens have one second outer portion and at least one recess, wherein recess arrangement on second outer portion, and first outer portion breasting to the second outer portion, and protuberance and recess interlocking.
According to the described lens combination of preferred embodiment of the present invention, protuberance for example comprises a hemisphere protuberance, and recess for example comprises half ball impression portion, and hemisphere protuberance and the interlocking of hemisphere recess.
According to the described lens combination of preferred embodiment of the present invention, protuberance for example comprises an annular convex, and recess for example comprises an annular recessed portion, and annular convex and annular recessed portion interlocking.
Based on above-mentioned, lens combination of the present invention adopts the mode of protuberance and recess interlocking, carries out the assembling of first lens and second lens, and therefore lens combination of the present invention has preferable assembly precision.In addition, optical lens of the present invention adopts the mode of protuberance and recess interlocking to carry out the assembling of lens, to reduce the bit errors between lens, so optical lens of the present invention has preferable optical property.
Description of drawings
Fig. 1 is the cross-sectional view of known camera lens.
Fig. 2 is the optics simulation analysis figure of known camera lens.
Fig. 3 A is the cross-sectional view according to the lens combination of the present invention's first preferred embodiment.
Fig. 3 B is the front-view schematic diagram according to first lens of the present invention's first preferred embodiment.
Fig. 3 C is another protuberance distribution schematic diagram according to the present invention's first preferred embodiment.
Fig. 4 A is the front-view schematic diagram according to first lens of the present invention's second preferred embodiment.
Fig. 4 B is another protuberance distribution schematic diagram according to the present invention's second preferred embodiment.
Fig. 5 A is the decomposing schematic representation according to the optical lens of preferred embodiment of the present invention.
Fig. 5 B is the combination synoptic diagram according to the optical lens of preferred embodiment of the present invention.
Fig. 6 is the optics simulation analysis figure according to the optical lens of preferred embodiment of the present invention.
100: known camera lens
110,310: sleeve
110a, 310a: light incident opening
110b, 310b: accommodation space
120,210: the first lens
130,320: dividing plate
140,220: the second lens
150,330: fixed head
150a, 330a: light outgoing opening
160,340: optical filter
170: the charge coupled cell sensor
180,360: light
180a, 360a: image light source
180b, 360b: veiling glare
200: lens combination
210a: first outer portion
212: protuberance
220a: second outer portion
222: recess
300: optical lens
312: screw thread
350: the image capture element
Embodiment
[first embodiment]
Please refer to Fig. 3 A, it illustrates the cross-sectional view according to the lens combination of the present invention's first preferred embodiment.Lens combination 200 for example comprises one first lens 210 and one second lens 220.Wherein, first lens 210 for example have one first outer portion 210a and at least one protuberance 212, and protuberance 212 is disposed on the first outer portion 210a.In addition, 220 interlockings of second lens are to first lens 210, and second lens 220 have one second outer portion 220a and at least one recess 222, its center dant 222 is disposed on the second outer portion 220a, and first outer portion 210a breasting to the second outer portion 220a, and protuberance 212 and recess 222 interlockings (shown in magnification region).
Fig. 3 B illustrates the front-view schematic diagram according to first lens of the present invention's first preferred embodiment.Please be simultaneously with reference to Fig. 3 A and Fig. 3 B, the material of first lens 210 and second lens 220 for example is clear glass, transparent plastic or other transparent material.In addition, the protuberance 212 of first lens 210 for example is a hemisphere protuberance, and protuberance 212 is disposed on the first outer portion 210a, and the distribution mode of protuberance 212 is for example shown in Fig. 3 B.The recess 222 of second lens 220 for example is half ball impression portion, and each hemisphere protuberance and the interlocking of half ball impression portion.In addition, first lens 210 and second lens 220 for example adopt diamond processing machine (diamond grindingmachine) processing grinding to form, so the form accuracy of the recess 222 of the protuberance 212 of first lens 210 and second lens 220 (shape accuracy) can be controlled at below 0.2 micron.
Please continue B with reference to Fig. 3, because the form accuracy of first lens 210 and second lens 220 all can be controlled at below 0.2 micron, so first lens 210 and second lens 220 after the assembling have minimum bit errors, so lens combination of the present invention 200 can be improved the problem of optical axis center displacement (eccentric shifting) effectively.Moreover, assembling mode compared to the sleeve of known technology, lens combination 200 of the present invention has less optical parallax (opticalerror) for example eccentric error (eccentric error), droop error (heeling error), and optical axis and lens verticality (perpendicularity) etc., so lens combination 200 can be applied to various precision optical instruments for example laser device (laser apparatus), microscope, telescope and night vision goggles (snooperscope) etc.
Please refer to Fig. 3 C, it is another protuberance distribution schematic diagram according to the present invention's first preferred embodiment.What deserves to be mentioned is that the distributing position of the protuberance 212 of lens combination 200 is not limited to shown in Fig. 3 B, and the distributing position of the protuberance 212 of lens combination 200 more can adopt the mode of 3 configurations, to improve the assembly precision of first lens 210 and second lens 220.In addition, the distributing position of the protuberance 212 of lens combination 200 of the present invention and quantity are not limited to shown in Fig. 3 B and Fig. 3 C, and protuberance 212 more can otherwise be configured with quantity, with assembly precision or the assembling convenience that improves first lens 210 and second lens 220.
[second embodiment]
Fig. 4 A is the front-view schematic diagram according to first lens of the present invention's second preferred embodiment.Please be simultaneously with reference to Fig. 3 A and Fig. 4 A, second embodiment is similar to first embodiment, its difference is that the protuberance 212 of first embodiment is respectively hemisphere protuberance and hemisphere recess (shown in Fig. 3 A, Fig. 3 B and Fig. 3 C) with recess 222, and the protuberance 212 of second embodiment is an annular convex, and recess 222 is an annular recessed portion.
Fig. 4 B is another protuberance distribution schematic diagram according to the present invention's second preferred embodiment.Please be simultaneously with reference to Fig. 4 A and Fig. 4 B, the protuberance 212 shown in Fig. 4 A is single annular convex, and the protuberance 212 shown in Fig. 4 B is a plurality of annular convex, wherein the distribution density of annular convex, width and quantity are not limited to Fig. 4 B and illustrate.
From the above, lens combination 200 of the present invention is not limited to use hemisphere protuberance and hemisphere recess, and annular convex and annular recessed portion be as the mode of rabbeting, and use other interlocking mode to rabbet first lens 210 and second lens also are the content of lens combination 200 of the present invention.In addition, lens combination 200 of the present invention also is not defined for the assembling of first lens 210 and second lens 220, also can be used for the assembling of a plurality of lens, does not repeat them here.Therefore, lens combination 200 of the present invention can be applied in the various optical instrumentations, to improve the optical property of optical instrumentation.Moreover, below only be applied to optical lens and describe with lens combination 200 of the present invention, but the application of non-limiting lens combination of the present invention 200.
Fig. 5 A is the decomposing schematic representation according to the optical lens of preferred embodiment of the present invention.Fig. 5 B is the combination synoptic diagram according to the optical lens of preferred embodiment of the present invention.Please be simultaneously with reference to Fig. 5 A and Fig. 5 B, optical lens 300 for example comprises a sleeve 310, one first lens 210, one second lens 220, a dividing plate 320, fixed head 330, optical filter 340 and image capture element 350.Wherein, sleeve 310 for example has a smooth incident opening 310a and an accommodation space 310b, and wherein accommodation space 310b is connected with light incident opening 310a.In addition, first lens 210 are disposed in the accommodation space 310b, and light incident opening 310a exposes part first lens 210 (shown in Fig. 5 B).In addition, second lens 220 are disposed in the accommodation space 310b, and rabbet to first lens 210, and protuberance 212 interlockings (shown in the magnification region of Fig. 5 B) of the recess 222 of second lens 220 and first lens 210.What deserves to be mentioned is, the protuberance 212 of Fig. 5 A and Fig. 5 B and external form, configuration mode and the quantity of recess 222 are shown in Fig. 4 A, but protuberance 212 also can be shown in Fig. 3 B, Fig. 3 C and Fig. 4 B with external form, configuration mode and the quantity of recess 222, perhaps, do not repeat them here with other external form, configuration mode or quantity.
Please refer to Fig. 5 B, dividing plate 320 is disposed between first lens 210 and second lens 220.In addition, in the fixed head 330 configuration accommodation space 310b, and be bearing on second lens 220, and fixed head 330 has a smooth outgoing opening 330a, exposes part second lens 220.In addition, image capture element 350 is disposed on fixed head 330 light path afterwards.Moreover optical filter 340 is disposed on the light path between fixed head 330 and the image capture element 350.What deserves to be mentioned is that dividing plate 320, fixed head 330, optical filter 340 are the selectivity member with image capture element 350.
From the above, dividing plate 320 for example is that the antiradar reflectivity material is made, and the antiradar reflectivity material polymkeric substance of black (polymer) for example, to reduce the influence of reflection veiling glare.In addition, optical filter 340 for example is infrared filter (IR filter) or other optical filter.In addition, image capture element 350 for example is charge coupled cell sensor (CCD sensor), complementary metal oxide semiconductor image sensor (Complementary Metal Oxide Semiconductorimage sensor, CMOS image sensor) or other image capture element.In order to increase the assembling convenience of optical lens 300, sleeve 310 for example more comprises a screw thread (screw thread) 312, and it is disposed on the outside surface of sleeve 310, yet the screw thread 312 of sleeve 310 is still the selectivity member.Moreover, carry out the optics simulation analysis for optical lens 300 of the present invention, so that the optical property of optical lens 300 of the present invention to be described.
Please refer to Fig. 6, it is the optics simulation analysis figure according to the optical lens of preferred embodiment of the present invention.Light 360 is in regular turn via the light outgoing opening 330a and the optical filter 340 of the light incident opening 310a of sleeve 310, first lens 210, dividing plate 320, second lens 220, fixed head 330, be incident to image capture element 350, wherein part light 360 becomes image light source 360a, and part light 360b then becomes useless veiling glare 360b.It should be noted that, when part light 360 from optical filter 340 surperficial outgoing, when being incident to the intersection of first lens 210 and second lens 220, the light 360 that the curved-surface structure that protuberance 212 and recess 222 are constituted can the scattered portion reflection is to reduce veiling glare 360b.Please be simultaneously with reference to Fig. 2 and Fig. 6, compared to known camera lens 100, optical lens 300 of the present invention is measured with effective reduction veiling glare 360b by the light 360 of protuberance 212 with the structural scattering partial reflection of recess 222, and then improves the quality of image.What deserves to be mentioned is, present embodiment does not limit protuberance 212 and needs on configuration first lens 210, and recess 222 need be disposed at the combination on second lens 220, also can be recess arrangement (does not illustrate) on first lens, and protuberance is disposed on second lens and (does not illustrate), to reach the aligning accuracy that improves first lens 210 and second lens 220.
From the above, protuberance 212 not only improves outside the aligning accuracy of first lens 210 and second lens 220 with recess 222, more can improve the veiling glare 360b influence of optical lens 300, to improve image quality.In addition, protuberance 212 more can obtain preferable configuration mode, quantity and a curvature by the optics simulation analysis with the configuration mode and the curvature of recess 222, and its result more can improve the aligning accuracy of first lens 210 and second lens 220 and the image quality of optical lens 300.
In sum, optical lens of the present invention and lens combination have following advantage:
One, compared to the assembling mode of known use sleeve, and the madial wall machining precision of sleeve is about about 10 microns, optical lens of the present invention and lens combination adopt the assembling mode of protuberance and recess interlocking, and the machining precision of protuberance and recess is about 0.2 micron, so optical lens of the present invention and lens combination have preferable aligning accuracy, and error is about 0.2 micron.In addition, along with the machining precision increase of first lens and second lens, the aligning accuracy of first lens and second lens also increases thereupon.
Two, lens combination of the present invention adopts the assembling mode of interlocking not to be only applicable to the assembling of first lens and second lens, more is applicable to the assembling of a plurality of lens, to improve the aligning accuracy between a plurality of lens.
Three, compared to known technology, optical lens of the present invention adopts the assembling mode of protuberance and recess interlocking not only to have preferred optical character, more improves packaging efficiency.
Claims (10)
1. an optical lens is characterized in that, comprising:
One sleeve has a smooth incident opening and an accommodation space, and wherein this accommodation space is connected with this light incident opening;
One first lens be disposed in this accommodation space, and these first lens have one first outer portion and at least one protuberance, and wherein this protuberance is disposed on this first outer portion, and this light incident opening exposes these first lens of part; And
One second lens are disposed in this accommodation space, and interlocking is to these first lens, and these second lens have one second outer portion and at least one recess, wherein this recess arrangement is on this second outer portion, and this first outer portion breasting is to this second outer portion, and this protuberance and the interlocking of this recess.
2. optical lens as claimed in claim 1 is characterized in that, this protuberance comprises a hemisphere protuberance, and this recess comprises half ball impression portion, and this hemisphere protuberance and the interlocking of this hemisphere recess.
3. optical lens as claimed in claim 1 is characterized in that this protuberance comprises an annular convex, and this recess comprises an annular recessed portion, and this annular convex and the interlocking of this annular recessed portion.
4. optical lens as claimed in claim 1 is characterized in that, more comprises a dividing plate, is disposed between these first lens and this second lens.
5. optical lens as claimed in claim 1 is characterized in that, more comprises a fixed head, dispose in this accommodation space, and these second lens of breasting, and this fixed head has a smooth outgoing opening, exposes these second lens of part.
6. optical lens as claimed in claim 5 is characterized in that, more comprises an image capture element, is disposed on this fixed head light path afterwards.
7. optical lens as claimed in claim 6 is characterized in that, more comprises an optical filter, is disposed on the light path between this fixed head and this image capture element.
8. a lens combination is characterized in that, comprising:
One first lens have one first outer portion and at least one protuberance, and wherein this protuberance is disposed on this first outer portion; And
One second lens, interlocking is to these first lens, and and these second lens have one second outer portion and at least one recess, and wherein this recess arrangement is on this second outer portion, and and this first outer portion breasting is to this second outer portion, and this protuberance and this recess are rabbeted.
9. lens combination as claimed in claim 8 is characterized in that, this protuberance comprises a hemisphere protuberance, and this recess comprises half ball impression portion, and this hemisphere protuberance and the interlocking of this hemisphere recess.
10. lens combination as claimed in claim 8 is characterized in that this protuberance comprises an annular convex, and this recess comprises an annular recessed portion, and this annular convex and the interlocking of this annular recessed portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410038172 CN1696752A (en) | 2004-05-11 | 2004-05-11 | Optical lens and set of lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410038172 CN1696752A (en) | 2004-05-11 | 2004-05-11 | Optical lens and set of lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1696752A true CN1696752A (en) | 2005-11-16 |
Family
ID=35349548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410038172 Pending CN1696752A (en) | 2004-05-11 | 2004-05-11 | Optical lens and set of lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1696752A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726821B (en) * | 2008-10-30 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Lens group |
| CN101576641B (en) * | 2008-05-07 | 2011-12-28 | 亚洲光学股份有限公司 | Inlaid lens set of optical system and method for supplementing and correcting lens set inlaying precision |
| CN104865680A (en) * | 2015-06-15 | 2015-08-26 | 广东旭业光电科技股份有限公司 | Optical shot and electronic equipment applying same |
| CN109752813A (en) * | 2019-03-26 | 2019-05-14 | 浙江舜宇光学有限公司 | Optical imaging system and display device with the optical imaging system |
-
2004
- 2004-05-11 CN CN 200410038172 patent/CN1696752A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101576641B (en) * | 2008-05-07 | 2011-12-28 | 亚洲光学股份有限公司 | Inlaid lens set of optical system and method for supplementing and correcting lens set inlaying precision |
| CN101726821B (en) * | 2008-10-30 | 2011-03-23 | 鸿富锦精密工业（深圳）有限公司 | Lens group |
| CN104865680A (en) * | 2015-06-15 | 2015-08-26 | 广东旭业光电科技股份有限公司 | Optical shot and electronic equipment applying same |
| CN109752813A (en) * | 2019-03-26 | 2019-05-14 | 浙江舜宇光学有限公司 | Optical imaging system and display device with the optical imaging system |
| CN109752813B (en) * | 2019-03-26 | 2024-05-10 | 浙江舜宇光学有限公司 | Optical imaging system and display device with same |
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