CN110161655A - Wide-angle day and night camera module of the confocal type without thermalization optical system and its application - Google Patents
Wide-angle day and night camera module of the confocal type without thermalization optical system and its application Download PDFInfo
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- CN110161655A CN110161655A CN201910451422.3A CN201910451422A CN110161655A CN 110161655 A CN110161655 A CN 110161655A CN 201910451422 A CN201910451422 A CN 201910451422A CN 110161655 A CN110161655 A CN 110161655A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 80
- 239000000463 material Substances 0.000 claims description 30
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- 235000015170 shellfish Nutrition 0.000 claims 1
- 238000011835 investigation Methods 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 230000002349 favourable effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
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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
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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
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
- G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
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Abstract
The embodiment of the invention discloses a kind of wide-angle, day and night confocal type successively includes: the first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens from object plane to image planes along optical axis without thermalization optical system；First lens, the second lens object plane side be convex surface, image planes side is concave surface, and focal power is negative；The object plane side of the third lens is concave surface, and image planes side is convex surface, and focal power is negative；4th lens, the 5th lens, the 6th lens object plane side be convex surface, image planes side is convex surface, and focal power is positive；7th lens are biconcave lens, and focal power is negative；8th lens are biconvex lens, and focal power is positive.On the other hand, the embodiment of the invention also provides a kind of camera modules.The optical system and camera module of the embodiment of the present invention are mainly made of 8 pieces of lens, and lens piece number is few, and structure is simple, are suitable for police crime scene investigation device and field of intelligent monitoring.
Description
Technical field:
The present invention relates to a kind of optical system and its camera module of application, especially a kind of wide-angle day and night confocal type without heat
Change the camera module of optical system and its application.
Background technique:
Existing optical system or mould group applied to police crime scene investigation device and field of intelligent monitoring, generally existing eyeglass is excessive,
Complicated defect.
Summary of the invention:
To overcome existing optical system or mould group applied to police crime scene investigation device and field of intelligent monitoring, generally existing eyeglass
Excessively, the problem of structure is complicated, the embodiment of the present invention on the one hand provide a kind of wide-angle day and night confocal type without thermalization optical system.
A kind of wide-angle day and night confocal type without thermalization optical system, along optical axis successively include: from object plane to image planes the first lens,
Second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens；
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 7th lens is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and focal power is positive.
On the other hand, the embodiment of the invention also provides a kind of camera modules.
A kind of camera module, includes at least optical lens, and it is day and night confocal to be equipped with wide-angle described above in optical lens
Type is without thermalization optical system.
The optical system and camera module of the embodiment of the present invention are mainly made of 8 pieces of lens, and lens piece number is few, structure letter
It is single；Using different lens be combined with each other and reasonable distribution focal power, have wide-angle, 5,000,000 or more pixels, day and night it is confocal, without heat
The favorable optical performances such as change are suitable for police crime scene investigation device and field of intelligent monitoring.
Detailed description of the invention:
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the structural schematic diagram of optical system of the invention or camera module embodiment；
Fig. 2 is the field curvature, distortion curve figure of optical system of the invention or camera module embodiment；
Fig. 3 is the chromaticity difference diagram of optical system of the invention or camera module embodiment；
Fig. 4 is MTF transfer curve figure under the visible light of optical system of the invention or camera module embodiment；
Fig. 5 is the infrared light 950nm MTF transfer curve figure of optical system of the invention or camera module embodiment；
Fig. 6 is the relative illumination figure of optical system of the invention or camera module embodiment；
MTF temperature drift figure at Fig. 7 is 25 DEG C of room temperature of optical system of the invention or camera module embodiment；
MTF temperature drift figure at Fig. 8 is -40 DEG C of low temperature of optical system of the invention or camera module embodiment；
MTF temperature drift figure at Fig. 9 is 105 DEG C of high temperature of optical system of the invention or camera module embodiment.
Specific embodiment:
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable
The meaning of sequence, it should be understood that only play differentiation and be used.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As shown in Figure 1, day and night confocal type 10 is successively wrapped from object plane to image planes along optical axis without thermalization optical system a kind of wide-angle
Include: the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7 and
8th lens 8.
The object plane side of first lens 1 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens 2 is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens 3 is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens 4 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens 5 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens 6 is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 7th lens 7 is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 8th lens 8 is convex surface, and image planes side is convex surface, and focal power is positive.
The optical system of the embodiment of the present invention is mainly made of 8 pieces of lens, and lens piece number is few, and structure is simple；Using difference
Lens be combined with each other and reasonable distribution focal power, have wide-angle, 5,000,000 or more pixels, day and night it is confocal, without good opticals such as thermalizations
Performance is suitable for police crime scene investigation device and field of intelligent monitoring.
Further, non-limiting, the 6th lens 6 and 7 phase of the 7th lens as a kind of preferred embodiment of the invention
Mutually glued to form compound lens, the focal power of compound lens is negative.It is simple and compact for structure, it is ensured that good optical property.
Still further, non-limiting as a kind of preferred embodiment of the invention, each lens of optical system meet
Following condition:
(1)-0.45<f/f1<-0.32
(2)-0.42<f/f2<-0.28
(3)-0.07<f/f3<-0.01
(4)0.21<f/f4<0.34
(5)0.19<f/f5<0.36
(6)-0.24<f/f67<-0.11
(7)0.27<f/f8<0.43
Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens 1, and f2 is the focal length of the second lens 2, f3
For the focal length of the third lens 3, f4 is the focal length of the 4th lens 4, and f5 is the focal length of the 5th lens 5, and f67 is the coke of compound lens
Away from f8 is the focal length of the 8th lens 8.Structure is simple, using the intercombination of different lens and reasonable distribution focal power, has wide
Angle, 5,000,000 or more pixel, day and night it is confocal, without favorable optical performances such as thermalizations.
Further, non-limiting as a kind of preferred embodiment of the invention, the focal length f1 of the first lens 1 with it is whole
Focal length f, Refractive Index of Material Nd1, the material Abbe constant Vd1 of a optical system meet: -0.45 < f/f1 < -0.32, Nd1 <
1.97, Vd1 > 32.Structure is simple, it is ensured that good optical property.
Further, non-limiting as a kind of preferred embodiment of the invention, the focal length f2 of the second lens 2 with it is whole
Focal length f, Refractive Index of Material Nd2, the material Abbe constant Vd2 of a optical system meet: -0.42 < f/f2 < -0.28, Nd2 >
1.83, Vd2 < 45.Structure is simple, it is ensured that good optical property.
Still further, non-limiting as a kind of preferred embodiment of the invention, the focal length f3 of the third lens 3 with it is whole
Focal length f, Refractive Index of Material Nd3, the material Abbe constant Vd3 of a optical system meet: -0.07 < f/f3 < -0.01, Nd3 >
1.9, Vd3 < 32.Structure is simple, it is ensured that good optical property.
Further, non-limiting as a kind of preferred embodiment of the invention, the focal length f4 of the 4th lens 4 with it is whole
Focal length f, Refractive Index of Material Nd4, the material Abbe constant Vd4 of a optical system meet: 0.21 < f/f4 < 0.34, Nd4 < 1.9,
Vd4 > 39.Structure is simple, it is ensured that good optical property.
Further, non-limiting as a kind of preferred embodiment of the invention, the focal length f5 of the 5th lens 5 with it is whole
Focal length f, Refractive Index of Material Nd5, the material Abbe constant Vd5 of a optical system meet: 0.19 < f/f5 < 0.36, Nd5 < 1.6,
Vd5 > 67.Structure is simple, it is ensured that good optical property.
Still further, non-limiting as a kind of preferred embodiment of the invention, the focal length f67 of compound lens with it is whole
The focal length f of a optical system meets: -0.24 < f/f67 < -0.11；Refractive Index of Material Nd6, the material Abbe constant of 6th lens 6
Vd6 meets: Nd6 < 1.6, Vd6 > 67；Refractive Index of Material Nd7, the material Abbe constant Vd7 of 7th lens 7 meet: Nd7 >
1.84, Vd7 < 25.Structure is simple, it is ensured that good optical property.
Further, non-limiting as a kind of preferred embodiment of the invention, the focal length f8 of the 8th lens 8 with it is whole
Focal length f, Refractive Index of Material Nd8, the material Abbe constant Vd8 of a optical system meet: 0.27 < f/f8 < 0.43, Nd8 < 1.50,
Vd8 > 80.Structure is simple, it is ensured that good optical property.
Further, non-limiting, the aperture diaphragm of optical system 9 as a kind of preferred embodiment of the invention
Between the 5th lens 5 and the 4th lens 4, close to 4 side of the 4th lens.Structure is simple, for adjusting the intensity of light beam.
Still further, non-limiting as a kind of preferred embodiment of the invention, the first lens 1, the second lens 2,
The third lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, the 7th lens 7 and the 8th lens 8 are glass lens,
In, the 8th lens 8 are glass aspheric lenses.
Specifically, non-limiting, the optical system of the embodiment of the present invention as a kind of preferred embodiment of the invention,
Focal length f=2.09mm, stop index F/NO=2.0, FOV=160 ° of field angle, optics overall length TTL=17mm, this optical system
Every basic parameter it is as shown in the table:
In upper table, along optical axis from object plane to image planes, S1, S2 correspond to two surfaces of the first lens 1；S3, S4 are corresponded to
Two surfaces of the second lens 2；S5, S6 correspond to two surfaces of the third lens 3；S7, S8 correspond to two of the 4th lens 4
Surface；STO corresponds to 9 position of optical system aperture diaphragm；S10, S11 correspond to two surfaces of the 5th lens 5；S12,
S13 corresponds to two surfaces of the 6th lens 6；S13, S14 correspond to two surfaces of the 7th lens 7；S15, S16 correspond to
Two surfaces of eight lens 8.
Further, non-limiting as a kind of preferred embodiment of the invention, the surface of the 8th lens 8 is aspheric
Face shape, meets following equation:
Wherein, parameter c=1/R, as curvature corresponding to radius, y are radial coordinate, unit and length of lens unit
Identical, k is circular cone whose conic coefficient, a1To a8Coefficient corresponding to respectively each radial coordinate.8th lens 8 it is non-
Spherical surface correlation values are as shown in the table:
| K | α1 | α2 | α3 | α4 | α5 | α6 | |
| S15 | 0 | 0 | -6.9E-3 | 4.0E-4 | 9.1E-6 | -6.5E-6 | 6.8E-7 |
| S16 | 0 | 0 | -1.8E-4 | -3.0E-4 | 1.35E-3 | -1.8E-5 | 1.0E-6 |
As can be seen that the optical system in the present embodiment has wide-angle, 5,000,000 or more pixels, day and night in from Fig. 2 to Fig. 9
It is confocal, without favorable optical performances such as thermalizations, be suitable for police crime scene investigation device and field of intelligent monitoring.
A kind of camera module, includes at least optical lens, and it is day and night confocal to be equipped with wide-angle described above in optical lens
Type is without thermalization optical system.
The camera module of the embodiment of the present invention is mainly made of 8 pieces of lens, and lens piece number is few, and structure is simple；Using difference
Lens be combined with each other and reasonable distribution focal power, have wide-angle, 5,000,000 or more pixels, day and night it is confocal, without good opticals such as thermalizations
Performance is suitable for police crime scene investigation device and field of intelligent monitoring.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert specific reality of the invention
It applies and is only limited to these instructions.It is all approximate with method of the invention, structure etc., identical, or for present inventive concept under the premise of
Several technology deduction or replace are made, all should be considered as protection scope of the present invention.
Claims (10)
1. day and night confocal type successively includes: the first lens, from object plane to image planes along optical axis without thermalization optical system to a kind of wide-angle
Two lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the 8th lens；It is characterized in that,
The object plane side of first lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of second lens is convex surface, and image planes side is concave surface, and focal power is negative；
The object plane side of the third lens is concave surface, and image planes side is convex surface, and focal power is negative；
The object plane side of 4th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 5th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 6th lens is convex surface, and image planes side is convex surface, and focal power is positive；
The object plane side of 7th lens is concave surface, and image planes side is concave surface, and focal power is negative；
The object plane side of 8th lens is convex surface, and image planes side is convex surface, and focal power is positive.
2. wide-angle as described in claim 1 day and night confocal type without thermalization optical system, which is characterized in that the 6th lens and the 7th
Lens are mutually glued to form compound lens, and the focal power of compound lens is negative.
3. wide-angle as described in claim 1 day and night confocal type without thermalization optical system, which is characterized in that optical system it is each
Mirror meets following condition:
(1)-0.45<f/f1<-0.32
(2)-0.42<f/f2<-0.28
(3)-0.07<f/f3<-0.01
(4)0.21<f/f4<0.34
(5)0.19<f/f5<0.36
(6)-0.24<f/f67<-0.11
(7)0.27<f/f8<0.43
Wherein, f is the focal length of entire optical system, and f1 is the focal length of the first lens, and f2 is the focal length of the second lens, and f3 is third
The focal length of lens, f4 are the focal length of the 4th lens, and f5 is the focal length of the 5th lens, and f67 is the focal length of compound lens, and f8 is the 8th
The focal length of lens.
4. wide-angle as described in claim 1 day and night confocal type without thermalization optical system, which is characterized in that the focal length of the first lens
The f1 and focal length f of entire optical system, Refractive Index of Material Nd1, material Abbe constant Vd1 meet: -0.45 < f/f1 < -0.32,
Nd1 < 1.97, Vd1 > 32.
5. wide-angle as described in claim 1 day and night confocal type without thermalization optical system, which is characterized in that the focal length of the second lens
The f2 and focal length f of entire optical system, Refractive Index of Material Nd2, material Abbe constant Vd2 meet: -0.42 < f/f2 < -0.28,
Nd2 > 1.83, Vd2 < 45.
6. wide-angle as described in claim 1 day and night confocal type without thermalization optical system, which is characterized in that the focal length of the third lens
The f3 and focal length f of entire optical system, Refractive Index of Material Nd3, material Abbe constant Vd3 meet: -0.07 < f/f3 < -0.01,
Nd3 > 1.9, Vd3 < 32.
7. wide-angle as described in claim 1 day and night confocal type without thermalization optical system, which is characterized in that the focal length of the 4th lens
The f4 and focal length f of entire optical system, Refractive Index of Material Nd4, material Abbe constant Vd4 meet: 0.21 < f/f4 < 0.34, Nd4
< 1.9, Vd4 > 39.
8. wide-angle as described in claim 1 day and night confocal type without thermalization optical system, which is characterized in that the focal length of the 5th lens
The f5 and focal length f of entire optical system, Refractive Index of Material Nd5, material Abbe constant Vd5 meet: 0.19 < f/f5 < 0.36, Nd5
< 1.6, Vd5 > 67.
9. wide-angle as claimed in claim 2 day and night confocal type without thermalization optical system, which is characterized in that the focal length of compound lens
F67 and the focal length f of entire optical system meet: -0.24 < f/f67 < -0.11；The Refractive Index of Material Nd6 of 6th lens, material Ah
Shellfish constant Vd6 meets: Nd6 < 1.6, Vd6 > 67；Refractive Index of Material Nd7, the material Abbe constant Vd7 of 7th lens meet:
Nd7 > 1.84, Vd7 < 25.
10. a kind of camera module includes at least optical lens, which is characterized in that be equipped with claim 1-9 in optical lens and appoint
Wide-angle described in one day and night confocal type without thermalization optical system.
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| CN201910451422.3A CN110161655A (en) | 2019-05-28 | 2019-05-28 | Wide-angle day and night camera module of the confocal type without thermalization optical system and its application |
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| CN201910451422.3A CN110161655A (en) | 2019-05-28 | 2019-05-28 | Wide-angle day and night camera module of the confocal type without thermalization optical system and its application |
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| WO2021244313A1 (en) * | 2020-06-02 | 2021-12-09 | 华为技术有限公司 | Optical lens and optical system |
| TWI819551B (en) * | 2022-03-31 | 2023-10-21 | 大立光電股份有限公司 | Imaging lens system, image capturing unit and electronic device |
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