CN105892024B - A kind of high definition fish eye optical camera lens - Google Patents
A kind of high definition fish eye optical camera lens Download PDFInfo
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- CN105892024B CN105892024B CN201610141692.0A CN201610141692A CN105892024B CN 105892024 B CN105892024 B CN 105892024B CN 201610141692 A CN201610141692 A CN 201610141692A CN 105892024 B CN105892024 B CN 105892024B
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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
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- 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
- G02B13/001—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
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a kind of high definition fish eye optical camera lenses, with five groups of six-element lens structures, including the first lens (1) set gradually since object space, second lens (2), the third lens (3), diaphragm (4), 4th lens (5), 5th lens (6), 6th lens (7) and optical filter (8), first lens (1) are falcate spherical lens, second lens (2) are falcate non-spherical lens, the third lens (3) are convexo-plane spherical lens, 4th lens (5) are lenticular non-spherical lens, 5th lens (6) are double concave non-spherical lens, 6th lens (7) are lenticular non-spherical lens.The purpose of the present invention is to provide a kind of small size, low cost, high definition fish eye lenses.
Description
Technical field
The present invention relates to optical imaging field, in particular to a kind of high definition fish eye optical camera lens.
Background technique
With advances in technology, for monitoring and the continuous improvement of the vehicle-mounted market demand, for small size low cost high definition
Fish-eye demand is more more and more intense, but fish eye lens existing in the market vehicle-mounted at present, or the resolving power of only VGA
(such as 200810098695.6) or volume are excessive (such as 201410203579.1), cost is excessively high or use process in by environment shadow
Sensitivity is rung, blur-free imaging etc. is unable in high/low temperature use environment, is far from satisfying vehicle-mounted, the length in complex environment such as monitoring
Time normal use.
Summary of the invention
In view of above such problem, the present invention overcomes shortcomings in the prior art, provide a kind of high definition flake
Optical lens, to meet existing market to vehicle-mounted product, security product miniaturization, lightweight, high Qinghua and cost effective development
Demand, and oversized angle can be achieved in the present invention in complex environment use process, video image high-definition meets market pair
The development trend of new product.
To solve the above-mentioned problems, use following technical scheme of the invention：
A kind of high definition fish eye optical camera lens, including be disposed with since object space the first lens (1), the second lens (2),
The third lens (3), diaphragm (4), the 4th lens (5), the 5th lens (6), the 6th lens (7) and optical filter (8), described first thoroughly
Mirror (1) is falcate spherical lens, and second lens (2) are falcate non-spherical lens, and the third lens (3) are plano-convex
Shape spherical lens, the 4th lens (5) are lenticular non-spherical lens, and the 5th lens (6) are that double concave is aspherical
Mirror, the 6th lens (7) are lenticular non-spherical lens.
Preferably, the 4th lens (5) and the 5th lens (6) are mutually glued, and the lens strength after gluing
For positive value.
Preferably, first lens (1) are glass lens, and focal power is negative value；Second lens (2) are plastics
Lens, focal power are negative value；The third lens (3) are glass lens, and focal power is positive value；4th lens (5)
For plastic lens, focal power is positive value；5th lens (6) are plastic lens, and focal power is negative value；Described 6th thoroughly
Mirror (7) is plastic lens, and focal power is positive value.
Preferably, the first face (S3) of second lens (2) is that hyperbola is aspherical, and second face (S4) is ellipse
It is aspherical；The first face (S8) of 4th lens (5) is that flat ellipse is aspherical, and the second face (S9) is that hyperbola is aspherical；Institute
The first face (S9) for stating the 5th lens (6) is that hyperbola is aspherical, and the second face (S10) is that ball-type is aspherical；6th lens
(7) the first face (S11) and the second face (S12) is that hyperbolic type is aspherical.
Preferably, all non-spherical lens faces type meets following equation：
Z=cy2/{1+[1-(1+k)c2y2]1/2}+a1y2+a2y4+a3y6+a4y8+a5y10+a6y12+a7y14+a8y16。
The present invention has the following advantages that compared with prior art：
1, this camera lens is while realizing ultra-wide angle visual field (>=180 °), meets that optical lens is small in size, and light weight solves picture
Height, it is at low cost；
2, structure novel, using two panels glass lens and four plastic lens structures, and to wherein one group of aspherical plastics
Lens carry out gluing, effectively reduce color difference and stray light, are conducive to the correction to system aberration, greatly improve production
The optical property of product；
3, using plastic lens glued construction, influence of the component assembling tolerance to product quality is advantageously reduced, is improved
Product Assembly yield, effectively reduces production cost；
4, using plastic lens glued construction, the optical axis deviation of system is reduced, is parked field for product for panorama,
Be conducive to improve the precision of image mosaic；
5, operating temperature fully meets automobile industry standard TS16949 requirement, can increase in -40 DEG C~+85 DEG C normal uses
Product has been added to shoot the stability of image in harsh environment；
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the high definition fish eye optical camera lens of an embodiment of the present invention；
Fig. 2 is the MTF curve figure of high definition fish eye optical camera lens shown in FIG. 1；
Fig. 3 is the point range figure of high definition fish eye optical camera lens shown in FIG. 1；
Fig. 4 is the curvature of field and distortion figure of high definition fish eye optical camera lens shown in FIG. 1.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
As shown in Figure 1, its structural schematic diagram for the high definition fish eye optical camera lens of one embodiment of the present of invention.
A kind of high definition fish eye optical camera lens, the advantage with small size, low cost comprising set gradually since object space
There are the first lens (1), the second lens (2), the third lens (3), diaphragm (4), the 4th lens (5), the 5th lens (6), the 6th thoroughly
Mirror (7) and optical filter (8).The face of each lens is successively numbered from the object side to the image side, respectively the first lens (1) first
Face (S1), the second face (S2), (2) first face (S3) of the second lens, the second face (S4), (3) first face (S5) of the third lens, second
Face (S6), diaphragm face (S7), (5) first face (S8) of the 4th lens, the second face (S9), (6) first face (S9) of the 5th lens, second
Face (S10), (7) first face (S11) of the 6th lens, the second face (S12), the first face of optical filter (S13), the second face (S14) and picture
Face.4th lens (5) and the 5th lens (6) are mutually glued, and cemented surface is the 4th the second face of lens (S9) and the 5th lens (6)
First face (S9).
First lens (1) are falcate spheric glass, and focal power is negative value, and material is glass；Second lens (2)
For falcate aspherical lens, focal power is negative value, and material is plastics, and the first face (S3) face type is that hyperbola is aspherical, the
Two faces (S4) face type is oval aspherical；The third lens (3) are convexo-plane spheric glass, and focal power is positive value, and material is glass
Glass；4th lens (5) are lenticular aspherical lens, and focal power is positive value, and material is plastics, and the first face (S8) face type is flat
Ellipsoid is aspherical, and the second face (S9) face type is that hyperbola is aspherical；5th lens (6) are double concave aspherical lens, light focus
Degree is negative value, and material is plastics, and the first face (S9) face type is that hyperbola is aspherical, and the second face (S10) face type is that ball-type is aspherical；
6th lens (7) are lenticular aspherical lens, and focal power is positive value, and material is plastics, the first face (S11) and the second face
(S12) face type is that hyperbola is aspherical.
In above structure scheme, the second lens (2), the 4th lens (5), the 5th lens (6) and the 6th lens (7) are used
Non-spherical lens effectively has compressed camera lens volume, to meet the requirement minimized for camera lens volume；Second lens (2),
Four lens (5), the 5th lens (6) and the 6th lens (7) have been all made of the aspherical face type of hyperbola, can effectively correct system
The optical aberration curvature of field, so that imaging center and edge all have higher resolving power, to meet high-resolution imaging requirements.
4th lens (5) and the 5th lens (6) are balsaming lens, can effectively reduce chromatic longitudiinal aberration and stray light, improve system
Optical property, and improve influence of the bias tolerance to camera lens quality when camera lens assembles, promote assembly yield.
In above scheme, in order to avoid glass lens and plastic lens occur image blur in variation of ambient temperature and show
As being selected by the distribution of reasonable distribution focal power with material, efficiently solving the high temperature or low occurred in glass modeling hybrid lens
Warm blooming guarantees the stability of the product shooting image in temperature change, meets vehicle-mounted product TS16949 is required (- 40
DEG C -85 DEG C) temperature range.
In above scheme, the aspherical face of the second lens (2), the 4th lens (5), the 5th lens (6) and the 6th lens (7)
Type meets following equation：
Z=cy2/{1+[1-(1+k)c2y2]1/2}+a1y2+a2y4+a3y6+a4y8+a5y10+a6y12+a7y14+a8y16
In above formula, parameter c is curvature corresponding to radius, and y is radial coordinate (its unit is identical as length of lens unit),
K is circular cone whose conic coefficient.When k is less than -1, face type curve is hyperbola；When k is equal to -1, face type curve is parabolic
Line；When k is between -1 to 0, face type curve is ellipse；When k is equal to 0, face type is round；When k is greater than 0, face type is
Flat ellipse curve.a1To a8Coefficient corresponding to each radial coordinate is respectively indicated, lens can accurately be set by the above parameter
The aspherical geomery on two image optics surfaces.
Specifically, the first lens (1), the second lens (2), the third lens (3), the 4th lens (5), the 5th lens (6) and
The focal length value of 6th lens (7) meets the following conditions：
-10mm<f1<- 4mm, -5mm<f2<- mm, 3mm<f3<8mm, 1mm<f4<5mm, -5mm<f5<- 1mm, 3mm<f45<
15mm, 2mm<f6<6mm, 5<f2/f<- 1,3<f45/f<15,1<f6/f<6.
Wherein, f1, f2, f3, f4, f5, f6 are respectively the first lens (1), the second lens (2), the third lens (3), the 4th
The effective focal length value of lens (5), the 5th lens (6), the 6th lens (7), f45 are that the 4th lens (5) and the 5th lens (6) are glued
The effective focal length value of lens afterwards, f are camera lens effective focal length value.
First lens (1) material meets the following conditions：Nd>1.6, Vd>40, Nd indicate the d optical index of lens material, Vd
Indicate the d optical dispersion coefficient of lens material.
The third lens (3) material meets the following conditions：Nd>1.8, Vd<25, Nd indicate the d optical index of lens material, Vd
Indicate the d optical dispersion coefficient of lens material.
An actual design case is lifted below：
| Face number | Type | Radius | Thickness | nd | νd | Half bore |
| OBJ | Object plane | 600 | 600 | 600 | ||
| S1 | Standard | 15.211 | 0.9 | 1.788 | 47.5 | 6.8 |
| S2 | It is aspherical | 4.302 | `2.49 | 4.1 | ||
| S3 | It is aspherical | 8.655 | 0.936 | 1.535 | 56 | 4.1 |
| S4 | It is aspherical | 1.125 | 1.609 | 2.35 | ||
| S5 | Standard | 4.132 | 2.61 | 1.946 | 17.9 | 3.55 |
| S6 | Standard | 19.755 | 0.621 | 1.75 | ||
| S7(Stop) | Diaphragm | infinity | -0.094 | 0.81 | ||
| S8 | It is aspherical | 3.208 | 1.388 | 1.535 | 56 | 0.85 |
| S9 | It is aspherical | -1.244 | 0.5 | 1.614 | 25.6 | 1.10 |
| S10 | It is aspherical | 85.448 | 0.722 | 1.50 | ||
| S11 | It is aspherical | 4.082 | 2.081 | 1.535 | 56 | 2.70 |
| S12 | It is aspherical | -2.113 | 0.1 | 2.85 | ||
| S13 | Standard | infinity | 0.7 | 1.517 | 64.2 | 2.80 |
| S14 | Standard | infinity | 1.45 | 2.80 | ||
| IMAGE | Imaging surface | infinity | - | 2.70 |
The asphericity coefficient of lens：
Fig. 2, Fig. 3, Fig. 4 are respectively that MTF curve figure, point range figure and the curvature of field of high definition fish eye optical camera lens shown in FIG. 1 are abnormal
Become figure.As can be seen that this camera lens has reached the requirement of high definition resolving power from this three width figure.
Above-described embodiment for the present invention for embodiment example, but embodiments of the present invention are not by above-mentioned implementation
The limitation of example, any change made without departing from the spirit and principles of the present invention of others, substitution, combine, are simple at modification
Change, should be equivalent substitute mode, be included within the scope of the present invention.
Claims (4)
1. a kind of high definition fish eye optical camera lens, which is characterized in that including being disposed with the first lens (1), since object space
Two lens (2), the third lens (3), diaphragm (4), the 4th lens (5), the 5th lens (6), the 6th lens (7) and optical filter (8),
First lens (1) are falcate spherical lens, and second lens (2) are falcate non-spherical lens, and the third is saturating
Mirror (3) is convexo-plane spherical lens, and the 4th lens (5) are lenticular non-spherical lens, and the 5th lens (6) are concave-concave
Shape non-spherical lens, the 6th lens (7) are lenticular non-spherical lens；
First lens (1), the third lens (3), the 4th lens (5), the 5th lens (6) and the described 6th
The focal length value of lens (7) meets the following conditions：
-10mm<f1<- 4mm, 3mm<f3<8mm, 1mm<f4<5mm, -5mm<f5<- 1mm, 3mm<f45<15mm, 2mm<f6<6mm,
3<f45/f<15,1<f6/f<6；
Wherein, f1, f3, f4, f5, f6 be respectively the first lens (1), the third lens (3), the 4th lens (5), the 5th lens (6),
The effective focal length value of 6th lens (7), f45 are the effective focal length of the lens after the 4th lens (5) and the 5th lens (6) gluing
Value, f are camera lens effective focal length value；
The first face (S3) of second lens (2) is that hyperbola is aspherical, and the second face (S4) is oval aspherical；Described 4th
The first face (S8) of lens (5) is that flat ellipse is aspherical, and the second face (S9) is that hyperbola is aspherical；5th lens (6)
First face (S9) is that hyperbola is aspherical, and the second face (S10) is that ball-type is aspherical；The first face (S11) of 6th lens (7)
It is that hyperbolic type is aspherical with the second face (S12).
2. high definition fish eye optical camera lens according to claim 1, which is characterized in that the 4th lens (5) and described
Five lens (6) are mutually glued, and the lens strength after gluing is positive value.
3. high definition fish eye optical camera lens according to claim 1, which is characterized in that first lens (1) are that glass is saturating
Mirror, focal power are negative value；Second lens (2) are plastic lens, and focal power is negative value；The third lens (3) are
Glass lens, focal power are positive value；4th lens (5) are plastic lens, and focal power is positive value；5th lens
It (6) is plastic lens, focal power is negative value；6th lens (7) are plastic lens, and focal power is positive value.
4. high definition fish eye optical camera lens according to claim 1, which is characterized in that all non-spherical lens faces type meet with
Lower equation：
Z=cy2/{1+[1-(1+k)c2y2]1/2}+a1y2+a2y4+a3y6+a4y8+a5y10+a6y12+a7y14+a8y16；In above formula, ginseng
Number c is curvature corresponding to radius, and y is radial coordinate, and unit is identical as length of lens unit, and k is circular cone system of conics
Number, when k is less than -1, face type curve is hyperbola；When k is equal to -1, face type curve is parabola；When k is between -1 to 0
When, face type curve is ellipse；When k is equal to 0, face type is round；When k is greater than 0, face type is flat ellipse curve；a1To a8Point
Coefficient corresponding to each radial coordinate is not indicated, and the non-of two image optics surfaces of lens can accurately be set by the above parameter
The geomery of spherical surface.
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| CN201610141692.0A CN105892024B (en) | 2016-03-11 | 2016-03-11 | A kind of high definition fish eye optical camera lens |
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| CN201610141692.0A CN105892024B (en) | 2016-03-11 | 2016-03-11 | A kind of high definition fish eye optical camera lens |
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| CN106443970B (en) * | 2016-10-13 | 2019-03-26 | 广东弘景光电科技股份有限公司 | Low distorted optical system and its camera lens of application |
| CN107167992B (en) * | 2017-06-02 | 2019-11-05 | 合肥翰视激光科技有限公司 | A kind of telecentricity digital projector camera lens of the small projection ratio of wide-angle |
| TWI703345B (en) | 2017-12-29 | 2020-09-01 | 光芒光學股份有限公司 | Lens and fabrication method thereof |
| CN108681050B (en) * | 2018-06-19 | 2019-12-03 | 江西联创电子有限公司 | Vehicle-mounted pick-up camera lens |
| WO2021217618A1 (en) * | 2020-04-30 | 2021-11-04 | 天津欧菲光电有限公司 | Optical system, camera module, electronic device, and automobile |
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| CN201852987U (en) * | 2010-11-10 | 2011-06-01 | 大立光电股份有限公司 | Image capture lens set with wide viewing angle |
| WO2013046567A1 (en) * | 2011-09-29 | 2013-04-04 | 富士フイルム株式会社 | Imaging lens and imaging device |
| CN103576290B (en) * | 2013-10-30 | 2016-01-06 | 宁波舜宇车载光学技术有限公司 | A kind of wide-angle lens |
| CN205809396U (en) * | 2016-03-11 | 2016-12-14 | 信华精机有限公司 | A kind of high definition fish eye optical camera lens |
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Effective date of registration: 20230831 Address after: 516006 4th Floor, Building 1, Huifeng West Fourth Road, Zhongkai High tech Zone, Huizhou City, Guangdong Province Patentee after: Huizhou Xinhua Optical Technology Co.,Ltd. Address before: 516006 Guangdong province Huizhou City Zhongkai high tech Zone Huifeng two West Road No. 26 Patentee before: SHINWA IND LTD. |