CN105589178A - High-low temperature confocal and stray-light-free optical system - Google Patents
High-low temperature confocal and stray-light-free optical system Download PDFInfo
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- CN105589178A CN105589178A CN201610170088.0A CN201610170088A CN105589178A CN 105589178 A CN105589178 A CN 105589178A CN 201610170088 A CN201610170088 A CN 201610170088A CN 105589178 A CN105589178 A CN 105589178A
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- lens
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- 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
- G02B13/0045—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 five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
Abstract
The invention discloses a high-low temperature confocal and stray-light-free optical system. A first lens (1), a second lens (2), a third lens (3), a diaphragm (100), a fourth lens (4), a fifth lens (5), a sixth lens (6) and a light-sensitive chip (200) are sequentially arranged from the object side to the image side. The first lens (1) is a glass spherical lens with a negative focal length. The second lens (2) is a plastic aspherical lens with a negative focal length. The third lens (3) is a plastic aspherical lens with a positive focal length. The fourth lens (4) is a glass spherical lens with a positive focal length. The fifth lens (5) is a plastic aspherical lens with a negative focal length. The sixth lens (6) is a plastic aspherical lens with a positive focal length. The high-low temperature confocal and stray-light-free optical system is simple in structure, confocal at high temperature and low temperature, high in pixel, small in distortion, high in transmittance, resistant to grinding and free of stray light.
Description
[technical field]
The present invention relates to a kind of optical system, more specifically say a kind of high low temperature confocal, without veiling glare optical system.
[background technology]
Monitoring at present, the such shortcoming of on-vehicle lens camera lens ubiquity used: the high low temperature of camera lens is not confocal; Super wide-angle lensThe distortion of head is large; Image planes transmitance is inadequate, has colour cast; Camera lens easily scratches; Veiling glare is serious etc. only have now minority camera lens,Improve certain aspect other side in the situation that sacrificing, such as in order to realize the confocal and high pixel of high low temperature, used moreEyeglass, has even used lanthanum P series glass to make image planes have colour cast, and the serious situation of veiling glare and ghost can not meet consumer to drawingMatter is bright, salubrious requirement also or the distortion of bugeye lens do not correct at all, there is the defect that distortion is large.
Therefore, the present invention just the deficiency based on above produce.
[summary of the invention]
The present invention seeks to have overcome the deficiencies in the prior art, provide a kind of simple in structure, high low temperature is confocal, high pixel,Little distortion, thoroughly high, wear-resisting, without the optical system of the super wide-angle of veiling glare.
The present invention is achieved by the following technical solutions:
A kind of high low temperature is confocal, without veiling glare optical system, it is characterized in that: from thing side to being provided with successively as side:
First lens 1, described first lens 1 is that focal length is negative glass spherical lens;
The second lens 2, the second described lens 2 are that focal length is negative plastic aspherical element lens;
The 3rd lens 3, the 3rd described lens 3 are that focal length is positive plastic aspherical element lens;
Diaphragm 100;
The 4th lens 4, the 4th described lens 4 are that focal length is positive glass spherical lens;
The 5th lens 5, the 5th described lens 5 are that focal length is negative plastic aspherical element lens;
The 6th lens 6, the 6th described lens 6 are that focal length is positive plastic aspherical element lens;
Sensitive chip 200.
High low temperature as above is confocal, without veiling glare optical system, it is characterized in that: the 6th described lens 6 and sensitizationBetween chip 200, be provided with cover glass 300.
High low temperature as above is confocal, without veiling glare optical system, it is characterized in that: described first lens 1, second saturatingMirror 2 and the 3rd lens 3 are meniscus shaped lens, and the 4th described lens 4 and the 6th lens 6 are biconvex lens, described the 5th saturatingMirror 5 is biconcave lens.
High low temperature as above is confocal, without veiling glare optical system, it is characterized in that: described the second lens 2, the 3rd lens 3, the 5th lens5 and the non-spherical surface shape of the 6th lens 6 meet following equation: In formula, parameter c is the corresponding curvature of radius, and y is radial coordinate, its unit and length of lensUnit is identical, and k is circular cone whose conic coefficient; In the time that k-factor is less than-1, the face shape curve of lens is hyperbola, when k-factor etc.At-1 o'clock, the face shape curve of lens was parabola; In the time that k-factor is between-1 to 0, the face shape curve of lens is oval, works as kCoefficient equals at 0 o'clock, and the face shape curve of lens is circular, and in the time that k-factor is greater than 0, the face shape curve of lens is oblate; α1To α8Represent respectively the corresponding coefficient of each radial coordinate.
Compared with prior art, the present invention has the following advantages:
1, the present invention adopts a small amount of plastic aspherical element eyeglass to add the glass spheric glass that price is lower, while design simultaneouslyPaid close attention to the elimination of veiling glare and ghost, thereby lens transmission efficiency is significantly increased, veiling glare and ghost are eliminated completely, have solvedExisting bugeye lens generally adopts many pieces of spherical glass eyeglasses, occurs that transmitance is low, picture colour cast, and veiling glare and ghost are seriousShortcoming.
2, the present invention has corrected distortion, makes the whole picture can blur-free imaging, has solved the high pixel camera lens of existing super wide-angleBecause periphery distortion is larger, there is picture accumulation, thus the shortcoming that causes periphery resolution ratio not embody.
3, high low temperature focus of the present invention overlaps, and realizes the uniformity of picture element in varying environment, has solved existing high pixelMonitoring camera can not be realized confocal on high low temperature, or is producing under white light normal temperature (20 DEG C) to well defocused, under high and low temperature environmentOccur that serious focus does not overlap, the situation that image planes are fuzzy.
4, the present invention is simple in structure, and the lens performance of producing is good, is applicable to applying.
[brief description of the drawings]
Fig. 1 is schematic diagram of the present invention.
[detailed description of the invention]
Below in conjunction with accompanying drawing, the invention will be further described:
A kind of high low temperature is confocal, without veiling glare optical system, from thing side to being provided with successively as side:
First lens 1, described first lens 1 is that focal length is negative glass spherical lens;
The second lens 2, the second described lens 2 are that focal length is negative plastic aspherical element lens;
The 3rd lens 3, the 3rd described lens 3 are that focal length is positive plastic aspherical element lens;
Diaphragm 100;
The 4th lens 4, the 4th described lens 4 are that focal length is positive glass spherical lens;
The 5th lens 5, the 5th described lens 5 are that focal length is negative plastic aspherical element lens;
The 6th lens 6, the 6th described lens 6 are that focal length is positive plastic aspherical element lens;
Sensitive chip 200.
Described the second lens 2, the 3rd lens 3, the 5th lens 5 and the 6th lens 6 are plastic aspherical element lens, describedFirst lens 1 and the 4th lens 4 are glass spherical lens, the coefficient of expansion difference that different materials is corresponding, and design differenceFace type, while making high low temperature face type produce complementary, thereby camera lens is remained unchanged in high low temperature time image matter. The present invention adopts 4Glass lens and 2 sheet glass eyeglasses, eyeglass quantity is few, and reasonably combined different eyeglass material, before guarantee camera lens picture elementPut, thereby use few eyeglass of trying one's best to improve overall transmitance, lens transmission efficiency is significantly increased, veiling glare and ghost disappear completelyRemove. The present invention adopts the reasonable material adapted of glass lens and glass lens, then according to the focal length positive-negative of each lens, Ke YiheReason is distributed refractive index Nd and Abbe number Vd value, thereby selects the concrete material of corresponding eyeglass according to different refractive indexes and Abbe numberMatter; In addition, adopt the spectrum design of mating with sensitive chip 200, thereby ensured the consistent of picture element, color and chip, realizeThe homogeneous of whole picture.
Between the 6th described lens 6 and sensitive chip 200, be provided with cover glass 300.
Described first lens 1, the second lens 2 and the 3rd lens 3 are meniscus shaped lens, the 4th described lens 4 andSix lens 6 are biconvex lens, and the 5th described lens 5 are biconcave lens, thereby make each piece of eyeglass all bring into play maximum effect,Thereby make distortion of the present invention very little. And the concrete shape of each piece of lens also takes into account the level that present technique can reach, and doTo rational topology layout.
The non-spherical surface shape of described the second lens 2, the 3rd lens 3, the 5th lens 5 and the 6th lens 6 meet withLower equation: In public affairsIn formula, parameter c is the corresponding curvature of radius, and y is radial coordinate, and its unit is identical with length of lens unit, and k is circular cone secondaryCurve coefficients; In the time that k-factor is less than-1, the face shape curve of lens is hyperbola, in the time that k-factor equals-1, and the face shape song of lensLine is parabola; In the time that k-factor is between-1 to 0, the face shape curve of lens is oval, in the time that k-factor equals 0, lensFace shape curve is circular, and in the time that k-factor is greater than 0, the face shape curve of lens is oblate; α1To α8Represent respectively each radial coordinateCorresponding coefficient.
Actual design case of the present invention below:
The wherein corresponding formula of R The inverse of middle c, i.e. c=1/R.
The asphericity coefficient of each aspheric surface face:
| k | α2 | α3 | α4 | α5 | |
| S3 | 3.212 | 3.5E-003 | -2.1E-004 | 2.3E-006 | 8.3E-008 |
| S4 | -2.31 | 0.0161 | 9.8E-005 | -5.213E-005 | -1.898E-006 |
| S5 | 0.15 | -6.1E-004 | 3.89E-004 | -2.3E-005 | -9.8E-008 |
| S6 | -56.32 | 1.1E-002 | 6.5E-004 | -5.82E-004 | 2.376E-004 |
| S9 | 0.85 | 3.75E-003 | -4.1E-004 | -3.5E-004 | 2.3E-004 |
| S10 | -120 | 0.0016 | 7.31E-004 | -5.33E-005 | -6.32E-005 |
| S11 | -26 | 4.5E-003 | -1.233E-004 | 3.02E-005 | 1.35E-006 |
| S12 | -3.212 | -5.73E-003 | 2.9E-004 | 5.62E-005 | -8.5E-006 |
Claims (4)
- High low temperature confocal, without a veiling glare optical system, it is characterized in that: from thing side to being provided with successively as side:First lens (1), described first lens (1) is that focal length is negative glass spherical lens;The second lens (2), described the second lens (2) are that focal length is negative plastic aspherical element lens;The 3rd lens (3), the 3rd described lens (3) are that focal length is positive plastic aspherical element lens;Diaphragm (100);The 4th lens (4), the 4th described lens (4) are that focal length is positive glass spherical lens;The 5th lens (5), the 5th described lens (5) are that focal length is negative plastic aspherical element lens;The 6th lens (6), the 6th described lens (6) are that focal length is positive plastic aspherical element lens;Sensitive chip (200).
- High low temperature according to claim 1 confocal, without veiling glare optical system, it is characterized in that: the 6th described lensAnd between sensitive chip (200), be provided with cover glass (300) (6).
- High low temperature according to claim 1 and 2 confocal, without veiling glare optical system, it is characterized in that: described first saturatingMirror (1), the second lens (2) and the 3rd lens (3) are meniscus shaped lens, and the 4th described lens (4) and the 6th lens (6) are twoConvex lens, the 5th described lens (5) are biconcave lens.
- High low temperature according to claim 1 confocal, without veiling glare optical system, it is characterized in that: the second described lens(2), the non-spherical surface shape of the 3rd lens (3), the 5th lens (5) and the 6th lens (6) meets following equation: In formula, parameter c isThe corresponding curvature of radius, y is radial coordinate, and its unit is identical with length of lens unit, and k is circular cone whose conic coefficient; Work as kCoefficient is less than at-1 o'clock, and the face shape curve of lens is hyperbola, and in the time that k-factor equals-1, the face shape curve of lens is parabola; WhenK-factor is between-1 to 0 time, and the face shape curve of lens is oval, and in the time that k-factor equals 0, the face shape curve of lens is circleShape, in the time that k-factor is greater than 0, the face shape curve of lens is oblate; α1To α8Represent respectively the corresponding coefficient of each radial coordinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170088.0A CN105589178B (en) | 2016-03-22 | 2016-03-22 | A kind of high/low temperature is confocal, without veiling glare optical system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170088.0A CN105589178B (en) | 2016-03-22 | 2016-03-22 | A kind of high/low temperature is confocal, without veiling glare optical system |
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| CN105589178A true CN105589178A (en) | 2016-05-18 |
| CN105589178B CN105589178B (en) | 2018-06-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106019540A (en) * | 2016-07-27 | 2016-10-12 | 广东弘景光电科技股份有限公司 | High-pixel ultrawide-angle optical system and applied camera lens thereof |
| CN107741625A (en) * | 2017-10-12 | 2018-02-27 | 深圳市特莱斯光学有限公司 | A kind of low-cost and high-performance drive recorder camera lens |
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| US20070206295A1 (en) * | 2006-03-02 | 2007-09-06 | Alps Electric Co., Ltd. | Optical device |
| CN203465464U (en) * | 2013-08-16 | 2014-03-05 | 凤凰光学(广东)有限公司 | High definition camera lens suitable for large temperature difference |
| CN103852870A (en) * | 2014-02-21 | 2014-06-11 | 襄阳锦翔光电科技股份有限公司 | Optical lens assembly |
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Patent Citations (7)
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| US20070206295A1 (en) * | 2006-03-02 | 2007-09-06 | Alps Electric Co., Ltd. | Optical device |
| CN203465464U (en) * | 2013-08-16 | 2014-03-05 | 凤凰光学(广东)有限公司 | High definition camera lens suitable for large temperature difference |
| CN103852870A (en) * | 2014-02-21 | 2014-06-11 | 襄阳锦翔光电科技股份有限公司 | Optical lens assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106019540A (en) * | 2016-07-27 | 2016-10-12 | 广东弘景光电科技股份有限公司 | High-pixel ultrawide-angle optical system and applied camera lens thereof |
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| CN107741625A (en) * | 2017-10-12 | 2018-02-27 | 深圳市特莱斯光学有限公司 | A kind of low-cost and high-performance drive recorder camera lens |
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| CN105589178B (en) | 2018-06-01 |
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