CN104407432A - High-low-temperature resistant high-resolution optical system capable of being used at daytime and night - Google Patents
High-low-temperature resistant high-resolution optical system capable of being used at daytime and night Download PDFInfo
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- CN104407432A CN104407432A CN201410809433.1A CN201410809433A CN104407432A CN 104407432 A CN104407432 A CN 104407432A CN 201410809433 A CN201410809433 A CN 201410809433A CN 104407432 A CN104407432 A CN 104407432A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 32
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 230000004304 visual acuity Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 11
- 238000013461 design Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0035—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having three lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/12—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having three components only
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
Abstract
The invention discloses a high-low-temperature resistant high-resolution optical system capable of being used at daytime and night. According to the key point of the technical scheme, the high-low-temperature resistant high-resolution optical system sequentially comprises a first lens, an aperture, a second lens, a third lens and an optical filter from a photographed object to an image side, wherein the first lens is an aspherical lens with negative focal power, the second lens is an aspherical lens with positive focal power, and the third lens is an aspherical lens with negative focal power. According to the optical system, only three plastic lens are used, the structure is simple, and a high-definition image can be photographed from low temperature to high temperature; moreover, by considering the universality of the lens, a series of conventional lens in the market at present are applicable to the optical system, visible light and infrared light are completely confocal, and the high-definition image can be formed at daytime, at night or in an environment in which the visible light and infrared light are simultaneously utilized.
Description
[technical field]
The present invention relates to a kind of optical system, especially relate to that a kind of structure being applied to vehicle-mounted, safety-protection system is simple, high-low temperature resistant, high resolving power, the optical system that day and night shares.
[background technology]
The high resolving power of vehicle-mounted, security protection at present, the shortcoming that day and night optical system shared ubiquity is such: cost is high, not high-low temperature resistant, serviceable life short, complex structure, can not be general etc.Also do not have camera lens can overcome above-mentioned shortcoming in the market simultaneously, only having minority camera lens, improving in certain when sacrificing other side, such as low in order to realize cost, just make system bulk increase or reduce, can not be general with camera lens in the market; The not even high-low temperature resistant had, serviceable life reduce, use procedure is affected by environment very large, clear picture can be photographed under normal temperature, but high temperature and low temperature environment can not photograph picture clearly, or under complex environment, use very short time system with regard to cisco unity malfunction etc., can not meet far away vehicle-mounted, safety-protection system requirement in complex environment hypograph sharpness and authenticity and normally to use for a long time, also do not overcome the camera lens of above whole shortcoming in the market.
The present invention makes in view of the situation.
[summary of the invention]
The present invention seeks to overcome prior art cost high, not high-low temperature resistant, life-span short, complex structure, can not with the deficiency such as conventional camera lens on market is general, provide that a kind of structure is simple, high-low temperature resistant, high resolving power, the optical system that day and night shares.
The present invention is achieved by the following technical solutions:
A kind of high-low temperature resistant, high resolving power, the optical system day and night shared, it is characterized in that: from subject to image planes, 6 include the first lens 1, diaphragm 2, second lens 3, the 3rd lens 4 and optical filter 5 successively, described first lens 1 for focal power be negative non-spherical lens, described second lens 3 for focal power be positive non-spherical lens, described 3rd lens 4 for focal power be negative non-spherical lens.
High-low temperature resistant as above, high resolving power, the optical system day and night shared, it is characterized in that: the first described lens 1 are falcate non-spherical lens, the second described lens 3 are lenticular non-spherical lens, and the 3rd described lens 4 are falcate non-spherical lens.
High-low temperature resistant as above, high resolving power, the optical system day and night shared, it is characterized in that: the A face of described first lens 1 is oval aspheric surface, the B face of described first lens 1 is hyperbolic curve aspheric surface; The C face of described second lens 3 is oval aspheric surface, and the D face of described second lens 3 is hyperbolic curve aspheric surface; The E face of described 3rd lens 4 and the F face of the 3rd lens 4 are hyperbolic curve aspheric surface.
High-low temperature resistant as above, high resolving power, the optical system day and night shared, is characterized in that: the first described lens 1, second lens 3, the 3rd lens 4 are plastic material.
High-low temperature resistant as above, high resolving power, the optical system day and night shared, it is characterized in that: the B face of described first lens 1 bends towards diaphragm 2, the E face of described 3rd lens 4 bends towards diaphragm 2.
High-low temperature resistant as above, high resolving power, the optical system day and night shared, is characterized in that: described first lens 1, second lens 3, the aspheric surface configuration of the 3rd lens 4 meet following equation:
Compared with prior art, the present invention has the following advantages:
1, in the market most of high resolving power, day and night optical system sharedly generally adopt special material, cost is higher, and structure is more complicated; The present invention has only used three pieces of glass lens, and structure is simple, and cost is low.
2, optical system for high resolution, in order to improve resolution, reduces costs in the market, causes system not high-low temperature resistant, can become picture rich in detail at normal temperatures, but at high temperature, low temperature or more all can not get a distinct image under complex environment; The present invention can both photograph picture rich in detail from low temperature to high temperature, even can get a distinct image to superhigh temperature 90 DEG C and more complicated rugged environment from ultralow temperature-50 DEG C.
3, most of optical system for high resolution, in order to improve resolution, reduce costs, does not consider the versatility of camera lens and control, output system in the market, causes camera lens must to arrange in pairs or groups separately the contour structures of control, output system and complete machine, very inconvenient; The versatility between camera lens is considered in the present invention's design, can be general, very convenient with a series of camera lenses common in the market.
4, common in the market high resolving power, day and night sharing system can only by day or evening can imaging clearly, but under the environment that visible ray and infrared light use simultaneously like this under similar dusk, night street lamp, can not imaging clearly; No matter by day visible ray of the present invention and infrared light are completely confocal, can both become image clearly under the environment that simultaneously uses of evening or visible ray and infrared light.
5, this invention also solves with glass mirror processing difficulties in front glass and glass plastic mixed structure, problem that the high yields caused of assembly precision requirement is low.
[accompanying drawing explanation]
Fig. 1 is optical system diagram of the present invention.
In figure; 1 is the first lens; 2 is diaphragm; 3 is the second lens; 4 is the 3rd lens; 5 is optical filter; 6 is image planes.
[embodiment]
Below in conjunction with accompanying drawing, the technology of the present invention feature is described in further detail so that described those skilled in the art can understand.
As shown in Figure 1, a kind of structure is simple, high-low temperature resistant, high resolving power, the optical system that day and night shares, from subject to image planes, 6 include the first lens 1, diaphragm 2, second lens 3, the 3rd lens 4 and optical filter 5 successively.Described first lens 1 are falcate non-spherical lens, and its focal power is negative, and material is plastics, and the A face of the first lens is oval aspheric surface, and the B face of the first lens is hyperbolic curve aspheric surface, and the B face of the first lens 1 bends towards diaphragm; Second lens 3 are lenticular non-spherical lens, and its focal power is just, material is plastics, and the C face of the second lens 3 is oval aspheric surface, and the D face of the second lens 3 is hyperbolic curve aspheric surface; 3rd lens 4 are falcate non-spherical lens, and its focal power is negative, and material is plastics, and the E face of the 3rd lens 4 and the F face of the 3rd lens 4 are hyperbolic curve aspheric surface, and the E face of the 3rd lens 4 bends towards diaphragm 2.
In order to realize, structure is simple, cost is low, design time system adopts all-plastic, and adopt the simplest three-chip type structure at present, not only make structure reach to simplify most, Material Cost drops to minimum, consider aspherical mirror machining cost, during design, aspheric surface adopts the most frequently used processing technology as far as possible simultaneously, processing cost is dropped to minimum; In addition, design process fully optimizes tolerance, reduces assembly precision as far as possible and reaches reduction assembly cost, make the cost control of the whole process of system to minimum.
In order to realize high-low temperature resistant, during design, the first lens 1, the 3rd lens 4 adopt negative power aspheric surface, second lens 3 adopt positive light coke aspheric surface, to utilize after diaphragm 2 and near the eyeglass of diaphragm 2 to temperature this characteristic more responsive, during temperature variation, the change of two minus power lens focal powers compensates the change of a positive light coke lens powers, when making to vary with temperature, the focal power of whole system has very little variable quantity, effectively improves the systemic resolution caused by temperature variation and declines; In addition, in system, the two sides of the 3rd lens 4 is hyperbolic curve aspheric surface, can be good at the curvature of field of correction system, and make system no matter be high temperature or low temperature, there is quite high resolution at image plane center and edge.
General in order to realize with camera lens on market, during design, the first lens 1 adopt minus power lens, after diaphragm 2 is placed on the first lens 1, and the B face of the first lens 1 bends towards diaphragm 2, the field angle of system can not only be increased, also can the tendency of good control system light, the first lens 1 and diaphragm 2 and the distance between diaphragm 2 and the second lens 3 can be strengthened simultaneously; In addition, the material that the second lens 3 adopt refractive index lower, effectively increases rear Jiao of system, ensure that the volume of conventional camera lens on the volume of whole system and market is suitable.
Infrared completely confocal in order to realize, the second lens 3 adopt low dispersion, and the 3rd lens 4 adopt higher dispersive plastic aspheric surface, and two eyeglass intervals are less, closely cooperate, and serve the effect that aberration corrected by bonding eyeglass; In addition, high chromatic dispersion material and low chromatic dispersion material with the use of, also can well correct the second order spectrum caused by infrared light, make white light and infrared light can become in image planes clearly as.
Adopt wide spectral when the present invention designs, and the theoretical resolution of design is far above actual needs value, ensure that image sharpness and color reducibility.
Lift an actual design case below:
| Face is numbered | Face type | Radius | Thickness | Material | Effective diameter |
| OBJ | Object plane | infinity | infinity | —— | infinity |
| A | Aspheric surface | 80.3860 | 0.8546 | APL5014CL | 9.1 |
| B | Aspheric surface | 4.0275 | 8.6782 | —— | 6.8 |
| STO | Diaphragm face | infinity | 3.8237 | —— | 2.8 |
| C | Aspheric surface | 3.2571 | 2.4675 | F4520 | 6.9 |
| D | Aspheric surface | -2.2653 | 0.3358 | SP-1516 | 4.7 |
| E | Aspheric surface | -1.2719 | 0.4227 | —— | 4.7 |
| F | Aspheric surface | -6.1752 | 0.1000 | —— | 3.6 |
| Standard | infinity | 0.8000 | H-K9L | 3.7 | |
| Standard | infinity | 5.2171 | —— | 3.7 | |
| IMA | Image planes | infinity | —— | —— | 4.9 |
In system, the first lens 1, second lens 3, the aspheric surface configuration of the 3rd lens 4 meet conventional aspheric equation:
In formula, the curvature of parameter c corresponding to radius, y is that its unit of radial coordinate is identical with length of lens unit, and k is circular cone whose conic coefficient.When k-factor is less than-1, face type curve is hyperbolic curve, is para-curve when equaling-1, is oval time between-1 to 0, is circle when equaling 0.A
1to a
8represent the coefficient corresponding to each radial coordinate respectively, accurately can be set the geomery of both-sided aspherical before and after lens by above parameter, above-mentioned aspheric processing is all normal processing technology.
The asphericity coefficient of lens is as following table:
| The A face of the first lens | The B face of the first lens | |
| k | 29.867202 | -1.225538 |
| a 2 | 0.000615324 | 0.00295244 |
| a 3 | -5.897639E-005 | 3.872235E-005 |
| a 4 | 1.85244E-006 | -2.12379E-005 |
| a 5 | -1.76112E-007 | 1.21562E-006 |
| a 6 | -1.29718E-009 | -1.22074E-007 |
| a 7 | -5.38176E-011 | 6.00381E-009 |
| The C face of the second lens | The D face of the second lens | |
| k | -1.127823 | -0.370315 |
| a 2 | 0.000583719 | 0.00602746 |
| a 3 | -0.000332958 | 0.00187733 |
| a 4 | -0.000235141 | -0.00044368 |
| a 5 | 3.77215E-005 | -8.56223E-005 |
| a 6 | -4.2231E-006 | 4.666321E-006 |
| a 7 | 2.37996E-007 | -4.32115E-007 |
| The E face of the 3rd lens | The F face of the 3rd lens | |
| k | -2.3358291 | -15.526134 |
| a 2 | 0.01335824 | 0.014665731 |
| a 3 | 0.00435892 | 0.001236721 |
| a 4 | 0.00088347 | -0.00036571 |
| a 5 | -0.0005829 | 0.000168532 |
| a 6 | -0.0001188 | 3.152648E-005 |
| a 7 | 7.33687E-005 | -5.81726E-005 |
Embodiment of the present invention is only the description carried out the preferred embodiment of the present invention; not inventive concept and scope are limited; under the prerequisite not departing from design philosophy of the present invention; the various modification that in this area, engineering technical personnel make technical scheme of the present invention and improvement, all should fall into protection scope of the present invention.
Claims (6)
1. a high-low temperature resistant, high resolving power, day and night shared optical system, it is characterized in that: from subject to image planes, (6) include the first lens (1), diaphragm (2), the second lens (3), the 3rd lens (4) and optical filter (5) successively, described first lens (1) for focal power be negative non-spherical lens, described second lens (3) for focal power be positive non-spherical lens, described 3rd lens (4) for focal power be negative non-spherical lens.
2. high-low temperature resistant according to claim 1, high resolving power, day and night shared optical system, it is characterized in that: described the first lens (1) are falcate non-spherical lens, described the second lens (3) are lenticular non-spherical lens, and the 3rd described lens (4) are falcate non-spherical lens.
3. high-low temperature resistant according to claim 1 and 2, high resolving power, day and night shared optical system, it is characterized in that: the A face of described first lens (1) is oval aspheric surface, the B face of described first lens (1) is hyperbolic curve aspheric surface; The C face of described second lens (3) is oval aspheric surface, and the D face of described second lens (3) is hyperbolic curve aspheric surface; The E face of described 3rd lens (4) and the F face of the 3rd lens (4) are hyperbolic curve aspheric surface.
4. high-low temperature resistant according to claim 1, high resolving power, day and night shared optical system, is characterized in that: described the first lens (1), the second lens (3), the 3rd lens (4) are plastic material.
5. high-low temperature resistant according to claim 3, high resolving power, day and night shared optical system, it is characterized in that: the B face of described first lens (1) bends towards diaphragm (2), the E face of described 3rd lens (4) bends towards diaphragm (2).
6. high-low temperature resistant according to claim 2, high resolving power, day and night shared optical system, is characterized in that: described first lens (1), the second lens (3), the 3rd lens (4) aspheric surface configuration meet following equation:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410809433.1A CN104407432A (en) | 2014-12-19 | 2014-12-19 | High-low-temperature resistant high-resolution optical system capable of being used at daytime and night |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410809433.1A CN104407432A (en) | 2014-12-19 | 2014-12-19 | High-low-temperature resistant high-resolution optical system capable of being used at daytime and night |
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| CN104407432A true CN104407432A (en) | 2015-03-11 |
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|---|---|---|---|
| CN201410809433.1A Pending CN104407432A (en) | 2014-12-19 | 2014-12-19 | High-low-temperature resistant high-resolution optical system capable of being used at daytime and night |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341529A (en) * | 2017-02-23 | 2021-09-03 | 核心光电有限公司 | Folded camera lens design |
| US11703668B2 (en) | 2014-08-10 | 2023-07-18 | Corephotonics Ltd. | Zoom dual-aperture camera with folded lens |
| US11743587B2 (en) | 2019-01-03 | 2023-08-29 | Corephotonics Ltd. | Multi-aperture cameras with at least one two state zoom camera |
| US11852845B2 (en) | 2013-07-04 | 2023-12-26 | Corephotonics Ltd. | Thin dual-aperture zoom digital camera |
| US11860515B2 (en) | 2019-11-25 | 2024-01-02 | Corephotonics Ltd. | Folded zoom camera module with adaptive aperture |
| US11947247B2 (en) | 2020-12-01 | 2024-04-02 | Corephotonics Ltd. | Folded camera with continuously adaptive zoom factor |
| US11953659B2 (en) | 2013-07-04 | 2024-04-09 | Corephotonics Ltd. | Miniature telephoto lens assembly |
| US11962901B2 (en) | 2020-05-30 | 2024-04-16 | Corephotonics Ltd. | Systems and methods for obtaining a super macro image |
| US11985407B2 (en) | 2021-11-02 | 2024-05-14 | Corephotonics Ltd. | Compact double folded tele cameras including four lenses of +−+−, +−++; OR +−−+; or six lenses of +−+−+− or +−+−−− refractive powers |
| US12000996B2 (en) | 2019-08-21 | 2024-06-04 | Corephotonics Ltd. | Low total track length lens assembly including seven lenses of +−+−++− refractive powers for large sensor format |
| US12019363B2 (en) | 2021-09-23 | 2024-06-25 | Corephotonics Lid. | Large aperture continuous zoom folded tele cameras |
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| CN100420973C (en) * | 2003-07-23 | 2008-09-24 | 柯尼卡美能达精密光学株式会社 | Imaging lens and imaging device |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11852845B2 (en) | 2013-07-04 | 2023-12-26 | Corephotonics Ltd. | Thin dual-aperture zoom digital camera |
| US11953659B2 (en) | 2013-07-04 | 2024-04-09 | Corephotonics Ltd. | Miniature telephoto lens assembly |
| US12007537B2 (en) | 2014-08-10 | 2024-06-11 | Corephotonics Lid. | Zoom dual-aperture camera with folded lens |
| US11703668B2 (en) | 2014-08-10 | 2023-07-18 | Corephotonics Ltd. | Zoom dual-aperture camera with folded lens |
| US11982796B2 (en) | 2014-08-10 | 2024-05-14 | Corephotonics Ltd. | Zoom dual-aperture camera with folded lens |
| CN113341529B (en) * | 2017-02-23 | 2023-09-19 | 核心光电有限公司 | Folded camera lens design |
| CN113341529A (en) * | 2017-02-23 | 2021-09-03 | 核心光电有限公司 | Folded camera lens design |
| US11668894B2 (en) | 2017-02-23 | 2023-06-06 | Corephotonics Ltd. | Folded camera lens designs |
| US11743587B2 (en) | 2019-01-03 | 2023-08-29 | Corephotonics Ltd. | Multi-aperture cameras with at least one two state zoom camera |
| US12000996B2 (en) | 2019-08-21 | 2024-06-04 | Corephotonics Ltd. | Low total track length lens assembly including seven lenses of +−+−++− refractive powers for large sensor format |
| US11860515B2 (en) | 2019-11-25 | 2024-01-02 | Corephotonics Ltd. | Folded zoom camera module with adaptive aperture |
| US11962901B2 (en) | 2020-05-30 | 2024-04-16 | Corephotonics Ltd. | Systems and methods for obtaining a super macro image |
| US11947247B2 (en) | 2020-12-01 | 2024-04-02 | Corephotonics Ltd. | Folded camera with continuously adaptive zoom factor |
| US12001125B1 (en) | 2020-12-01 | 2024-06-04 | Corephotonics Ltd. | Folded camera with continuously adaptive zoom factor |
| US12019363B2 (en) | 2021-09-23 | 2024-06-25 | Corephotonics Lid. | Large aperture continuous zoom folded tele cameras |
| US11985407B2 (en) | 2021-11-02 | 2024-05-14 | Corephotonics Ltd. | Compact double folded tele cameras including four lenses of +−+−, +−++; OR +−−+; or six lenses of +−+−+− or +−+−−− refractive powers |
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Application publication date: 20150311 |