CN106371196B - The short overall length optical system of the high pixel of large aperture ultra-wide angle and its camera lens of application - Google Patents
The short overall length optical system of the high pixel of large aperture ultra-wide angle and its camera lens of application Download PDFInfo
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- CN106371196B CN106371196B CN201611091404.1A CN201611091404A CN106371196B CN 106371196 B CN106371196 B CN 106371196B CN 201611091404 A CN201611091404 A CN 201611091404A CN 106371196 B CN106371196 B CN 106371196B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 claims description 22
- 238000002360 preparation method Methods 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 5
- 150000001875 compounds Chemical class 0.000 abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005308 flint glass Substances 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 239000005331 crown glasses (windows) Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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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- 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
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Abstract
The embodiment of the invention discloses a kind of short overall length optical systems of the high pixel of large aperture ultra-wide angle, are successively arranged from object plane to image planes along optical axis: the first lens, the second lens, the third lens, the 4th lens, the 5th lens and the 6th lens；Wherein, the 4th lens and the mutually glued formation compound lens of the 5th lens, the focal power of the compound lens are positive.On the other hand, the embodiment of the invention also provides a kind of camera lenses.The embodiment of the present invention is mainly made of 6 pieces of lens, and lens piece number is few, and structure is simple, small volume；It is combined with each other using different lens, there are the favorable optical performances such as large aperture, ultra-wide angle, high pixel, short overall length, when being applied in the imaging devices such as automobile data recorder, high definition picture can be shot.
Description
The technical field is as follows:
the present invention relates to an optical system and a lens used in the optical system, and more particularly, to an optical system and a lens used in an imaging device such as a vehicle event data recorder.
Background art:
the existing optical system and lens applied to imaging equipment such as a vehicle event data recorder have the defects of fuzzy shot pictures under the condition of low light at night, unclear plate distinguishing, complex lens structure for realizing a large aperture effect, high cost and the like.
The invention content is as follows:
in order to solve the problem of blurred shot images of the existing optical system or lens, the embodiment of the invention provides an optical system with a large aperture, an ultra-wide angle, a high pixel length, a short total length.
Big light ring super wide angle high pixel short total length optical system is equipped with from the object plane to image plane along the optical axis in proper order: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens;
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side is a convex surface, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a concave surface, the image surface side is a convex surface, and the focal power of the fourth lens is positive;
the object plane side of the fifth lens is a concave surface, the image plane side of the fifth lens is a convex surface, and the focal power of the fifth lens is negative;
the object surface side of the sixth lens is a convex surface, the image surface side is a convex surface, and the focal power of the sixth lens is positive;
and the fourth lens and the fifth lens are mutually glued to form a combined lens, and the focal power of the combined lens is positive.
On the other hand, the embodiment of the invention also provides a lens.
A lens is provided, wherein the large-aperture super-wide-angle high-pixel short-total-length optical system is arranged in the lens.
The embodiment of the invention mainly comprises 6 lenses, the number of the lenses is small, the structure is simple, and the volume is small; different lenses are combined with each other, so that the lens has good optical properties such as large aperture, super wide angle, high pixel, short total length and the like, and can shoot high-definition pictures when being applied to imaging equipment such as a vehicle event data recorder and the like.
Description of the drawings:
in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of an optical system or lens of the present invention;
FIG. 2 is a graph of curvature of field, distortion, of an optical system or lens of the present invention;
FIG. 3 is a graph of MTF for an optical system or lens of the present invention;
fig. 4 is a diagram of relative illumination of an optical system or lens according to the present invention.
The specific implementation mode is as follows:
in order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the large-aperture super-wide-angle high-pixel short-total-length optical system is sequentially provided with, along an optical axis from an object plane to an image plane 8: a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, and a sixth lens 6.
The object surface side of the first lens 1 is a convex surface, the image surface side is a concave surface, and the focal power is negative;
the object surface side of the second lens 2 is a convex surface, the image surface side is a concave surface, and the focal power is negative;
the object surface side of the third lens 3 is a convex surface, the image surface side is a convex surface, and the focal power is positive;
the object plane side of the fourth lens 4 is a concave surface, the image plane side is a convex surface, and the focal power is positive;
the object plane side of the fifth lens 5 is a concave surface, the image plane side is a convex surface, and the focal power of the fifth lens is negative;
the object surface side of the sixth lens element 6 is a convex surface, the image surface side is a convex surface, and the focal power thereof is positive;
wherein the fourth lens 4 and the fifth lens 5 are cemented with each other to form a combined lens having a positive power.
The embodiment of the invention mainly comprises 6 lenses, the number of the lenses is small, the structure is simple, and the volume is small; different lenses are combined with each other, so that the lens has good optical properties such as large aperture, super wide angle, high pixel, short total length and the like, and can shoot high-definition pictures when being applied to imaging equipment such as a vehicle event data recorder and the like.
Further, each lens of the optical system satisfies the following condition:
(1)-1.51<f/f12<-1.02；
(2)0.35<f/f3<0.97；
(3)0.11<f/f45<0.42；
(4)0.12<f/f6<0.6；
where f is a focal length of the entire optical system, f12 is a combined focal length of the first lens 1 and the second lens 2, f3 is a focal length of the third lens 3, f45 is a combined focal length of the fourth lens 4 and the fifth lens 5, and f6 is a focal length of the sixth lens 6. The structure is simple, different lenses are combined with each other, and the lens has good optical properties such as large aperture, super wide angle, high pixel, short total length and the like.
Still further, the optical system satisfies the following condition:
wherein,is the combined power of the first lens 1 and the second lens 2,is the combined power of the fourth lens 4 and the fifth lens 5,and Vd4 are the power and the abbe constant of the material of the fourth lens 4,and Vd5 are the power of the fifth lens 5 and the abbe constant of the material, respectively, which can ensure good optical performance.
Further, the refractive index Nd1 of the material and the abbe constant Vd1 of the first lens 1 satisfy: 1.45< Nd1<1.58, 50< Vd1< 70. Simple structure and can ensure good optical performance.
Still further, the refractive index Nd2 of the material and the abbe constant Vd2 of the second lens 2 satisfy: 1.55< Nd2<1.65, 30< Vd2< 40. Simple structure and can ensure good optical performance.
Further, the refractive index Nd3 of the material and the abbe constant Vd3 of the third lens 3 satisfy: 1.70< Nd3<1.95, 15< Vd3< 30. Simple structure and can ensure good optical performance.
Still further, the fourth lens 4 is made of lanthanum crown glass, and the refractive index Nd4 and Abbe constant Vd4 of the material satisfy: 1.60< Nd4<1.80, 45< Vd4< 65. Simple structure and can ensure good optical performance.
Still further, the fifth lens 5 is made of heavy flint glass, and the refractive index Nd5 and the Abbe constant Vd5 of the material meet the following requirements: 1.60< Nd5<1.95, 15< Vd5< 40. Simple structure and can ensure good optical performance.
Furthermore, the sixth lens 6 is made of heavy lanthanum flint glass, and the refractive index Nd6 and the Abbe constant Vd6 of the material meet the following requirements: 1.80< Nd6<2.1, 15< Vd6< 50. Simple structure and can ensure good optical performance.
Specifically, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, and the sixth lens 6 are all glass lenses. Good optical performance can be ensured.
Further, an aperture stop 7 of the optical system is located between the third lens 3 and the fourth lens 4, close to the third lens side 3. Simple structure and is used for adjusting the intensity of the light beam.
Specifically, in the present embodiment, the focal length f of the optical system is 2.88mm, the stop index fno is 1.8, the diagonal field angle 2 ω is 169 °, and the total lens length is 16.5 mm. The basic parameters of the optical system are shown in the following table:
in the above table, S1, S2 correspond to two surfaces of the first lens 1 from the object plane to the image plane along the optical axis; s3, S4 correspond to both surfaces of the second lens 2; s5, S6 correspond to both surfaces of the third lens 3; STO, S8 correspond to the two positions of the diaphragm 7; s9, S10 correspond to both surfaces of the fourth lens 4; s10, S11 correspond to both surfaces of the fifth lens 5; s12, S13 correspond to both surfaces of the sixth lens 6; s14 and S15 denote two surfaces of the filter located between the sixth lens 6 and the image plane 8.
As can be seen from fig. 2 to 4, the optical system in the present embodiment has good optical performance such as a large aperture, an ultra-wide angle, a high pixel, a short overall length, and the like.
A lens is provided, wherein the large-aperture super-wide-angle high-pixel short-total-length optical system is arranged in the lens.
The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the practice of the invention to the particular forms disclosed. Similar or identical methods, structures and the like as those of the present invention or several technical deductions or substitutions made on the premise of the conception of the present invention should be considered as the protection scope of the present invention.
Claims (10)
1. Big light ring super wide angle high pixel short total length optical system is equipped with from the object plane to image plane along the optical axis in proper order: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; it is characterized in that the preparation method is characterized in that,
the object surface side of the first lens is a convex surface, the image surface side of the first lens is a concave surface, and the focal power of the first lens is negative;
the object surface side of the second lens is a convex surface, the image surface side of the second lens is a concave surface, and the focal power of the second lens is negative;
the object surface side of the third lens is a convex surface, the image surface side is a convex surface, and the focal power of the third lens is positive;
the object surface side of the fourth lens is a concave surface, the image surface side is a convex surface, and the focal power of the fourth lens is positive;
the object plane side of the fifth lens is a concave surface, the image plane side of the fifth lens is a convex surface, and the focal power of the fifth lens is negative;
the object surface side of the sixth lens is a convex surface, the image surface side is a convex surface, and the focal power of the sixth lens is positive;
and the fourth lens and the fifth lens are mutually glued to form a combined lens, and the focal power of the combined lens is positive.
2. The large-aperture ultra-wide-angle high-pixel short-total length optical system of claim 1, wherein each lens of the optical system satisfies the following condition:
(1)-1.51<f/f12<-1.02；
(2)0.35<f/f3<0.97；
(3)0.11<f/f45<0.42；
(4)0.12<f/f6<0.6；
where f is a focal length of the entire optical system, f12 is a combined focal length of the first lens and the second lens, f3 is a focal length of the third lens, f45 is a combined focal length of the fourth lens and the fifth lens, and f6 is a focal length of the sixth lens.
3. A large aperture ultra-wide angle high pixel short total length optical system according to claim 1 or 2, characterized in that it satisfies the following condition:
(1)
(2)
(3)
wherein,is the combined power of the first lens and the second lens,is the combined power of the fourth lens and the fifth lens,and Vd4 are the power and material abbe constant of the fourth lens,and Vd5 are the power and material abbe constant, respectively, of the fifth lens.
4. The large-aperture ultra-wide-angle high-pixel short-total-length optical system as claimed in claim 1 or 2, wherein the refractive index Nd1 of the material and the Abbe constant Vd1 of the material of the first lens satisfy the following conditions: 1.45< Nd1<1.58, 50< Vd1< 70.
5. The large-aperture ultra-wide-angle high-pixel short-total-length optical system as claimed in claim 1 or 2, wherein the refractive index Nd2 of the material and the Abbe constant Vd2 of the material of the second lens satisfy the following conditions: 1.55< Nd2<1.65, 30< Vd2< 40.
6. The large-aperture ultra-wide-angle high-pixel short-total-length optical system as claimed in claim 1 or 2, wherein the refractive index Nd3 of the material and the Abbe constant Vd3 of the material of the third lens satisfy the following conditions: 1.70< Nd3<1.95, 15< Vd3< 30.
7. The large-aperture ultra-wide-angle high-pixel short-total-length optical system as claimed in claim 1 or 2, wherein the refractive index Nd4 of the material and the Abbe constant Vd4 of the material of the fourth lens satisfy the following conditions: 1.60< Nd4<1.80, 45< Vd4< 65.
8. The large-aperture ultra-wide-angle high-pixel short-total-length optical system as claimed in claim 1 or 2, wherein the refractive index Nd5 of the material and the Abbe constant Vd5 of the material of the fifth lens satisfy the following conditions: 1.60< Nd5<1.95, 15< Vd5< 40.
9. The large-aperture ultra-wide-angle high-pixel short-total-length optical system as claimed in claim 1 or 2, wherein the refractive index Nd6 of the material and the Abbe constant Vd6 of the material of the sixth lens satisfy the following conditions: 1.80< Nd6<2.1, 15< Vd6< 50.
10. A lens barrel having a large aperture, ultra-wide angle, high pixel, short total length optical system as claimed in any one of claims 1 to 9 mounted therein.
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| CN201611091404.1A CN106371196B (en) | 2016-12-01 | 2016-12-01 | The short overall length optical system of the high pixel of large aperture ultra-wide angle and its camera lens of application |
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| CN201611091404.1A CN106371196B (en) | 2016-12-01 | 2016-12-01 | The short overall length optical system of the high pixel of large aperture ultra-wide angle and its camera lens of application |
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| CN106371196B true CN106371196B (en) | 2019-01-08 |
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| CN108508571B (en) * | 2017-02-28 | 2021-01-12 | 宁波舜宇车载光学技术有限公司 | Imaging system lens group |
| JP2020522751A (en) * | 2017-06-02 | 2020-07-30 | アウル ラブス、インク． | Wide-angle lens and camera system for peripheral vision imaging |
| CN110320646A (en) * | 2019-07-25 | 2019-10-11 | 广东弘景光电科技股份有限公司 | Large aperture wide-angle optics and its camera module of application |
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