CN104730692A - Full-frame lens of micro single-lens reflex camera - Google Patents

Full-frame lens of micro single-lens reflex camera Download PDF

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Publication number
CN104730692A
CN104730692A CN201510101511.7A CN201510101511A CN104730692A CN 104730692 A CN104730692 A CN 104730692A CN 201510101511 A CN201510101511 A CN 201510101511A CN 104730692 A CN104730692 A CN 104730692A
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lens
sphere
dispersion
refractive index
less
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CN104730692B (en
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王晓红
吴建军
于吉
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Shenyang Normal University
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Shenyang Normal University
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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
    • 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
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • 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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The invention provides a full-frame lens of a micro single-lens reflex camera. The full-frame lens mainly solves the problems that all the existing lenses are spherical mirrors, so that aberration is generated, and the imaging quality is not high. The full-frame lens of the micro single-lens reflex camera comprises a first lens body, a second lens body, a third lens body, a fourth lens body, a fifth lens body, a sixth lens body, a seventh lens body, an eighth lens body and a ninth lens body in sequence from the position close to an object. The compact design with a spherical surface and an aspheric surface is adopted, the aberration, generated due to the fact that only spherical mirrors are adopted, of a spherical surface is avoided, the structure is simplified, the imaging quality is improved, the field angle is large, the full-frame lens is suitable for shooting of photography works of portraits, landscapes and humanity sketches, the whole lens is made of glass, the performance parameters of a single lens body are improved, the yield of the whole lens is improved, and the lens is convenient to produce actually.

Description

Micro-singledigit camera full width camera lens
Technical field
The present invention relates to a kind of micro-singledigit camera full width camera lens, micro-singledigit camera full width camera lens of to be a kind of specification be specifically 35mmf2.0, belongs to camera lens preparation field.
Background technology
Human development history proves, neither one technology can be forever brilliant.In the film epoch, necessary strict protection can not light leak when finding a view for the medium of stored images---film.But enter the digital age, situation has had that the change of essence---CCD is not afraid of light leak.It both can be used for finding a view, also imaging can be used further to after clearing, so, the necessity that reflective mirror exists is had a greatly reduced quality, its principle of work, determine reflective mirror to find a view and be not suitable for digital photography, can realize on all-electronic digital camera completely, there is no need also to retain a mechanical part---reflective mirror.Although to be found a view by camera lens because can take into account and to protect film not light leak and make people can tolerate the structure of reflective mirror bulky complex; but the characteristic of not being afraid of light leak of current digital age image sensor; the existence of reflective mirror is made to become dispensable; along with becoming better and approaching perfection day by day of electronic viewfinding technology; some day, the sharpness of electronic viewfinding and lightness can be got well be enough to replace reflective mirror sooner or later.So in theory, micro-one camera can have all nearly all advantages of slr camera.Wait demand is once outburst, and this kind of problem is certain to be readily solved.This camera lens is exactly special is micro-one camera design.Compare single anti-camera lens, smaller and more exquisite and quality is higher.
Summary of the invention
For solving the problem, provide a kind of micro-singledigit camera full width camera lens.This micro-singledigit camera full width camera lens adopts sphere to add aspheric surface compact design, avoids the aberration of the sphere produced because all adopting spherical mirror, simplifies structure and improves image quality.Field angle is comparatively large, is applicable to portrait, landscape, the shooting of the photographic work of humane essay.Eyeglass all adopts glass material, improves single lens performance parameter.The yields of whole camera lens can be improved and be convenient to actual production.
For achieving the above object, the present invention adopts following technical proposals:
Micro-singledigit camera full width camera lens, it comprises the first lens successively from object space, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens; Wherein, described first lens be concave-concave to sphere negative lens, comprise concave surface first sphere and concave surface second sphere, the second lens be biconvex to sphere positive lens, comprise convex surface second sphere and convex surface the 3rd sphere; First lens become balsaming lens with the second lens combination; 3rd lens are biconvex sphere positive lens, comprise convex surface the 4th sphere and convex surface the 5th sphere; 4th lens be concave-concave to sphere negative lens, comprise concave surface the 5th sphere and concave surface the 6th sphere; 3rd lens become balsaming lens with the 4th lens combination; 5th lens are aspheric surface bent moon negative lens, comprise concave surface the 7th aspheric surface and convex surface the 8th aspheric surface; 6th lens be concave-concave to sphere negative lens, comprise concave surface the 9th sphere and concave surface the tenth sphere; 7th lens are biconvex sphere positive lens, comprise convex surface the tenth sphere and convex surface the 11 sphere; 6th lens become balsaming lens with the 7th lens combination; 8th lens are biconvex sphere positive lens, comprise convex surface the 12 sphere and convex surface the 13 sphere; 9th lens are concave-concave sphere negative lens, comprise concave surface the 13 sphere and concave surface the 14 sphere; 8th lens become balsaming lens with the 9th lens combination; First lens are glass material to the 9th lens and make; Diaphragm is positioned on object space position, between the 4th lens and the 5th lens.
The refractive index of described first lens is greater than 1.4 and is less than 1.6, and its dispersion is greater than 50 and is less than 75, the glass of preferred HK51CDGM, and refractive index and dispersion are respectively 1.523,58.6.
The refractive index of described second lens is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, and preferred HZLAF50B CDGM, refractive index and dispersion are respectively 1.804,46.5.
The refractive index of described 3rd lens is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, and preferred HZLAF50B CDGM, refractive index and dispersion are respectively 1.804,46.5.
The refractive index of described 4th lens is greater than 1.6 and is less than 1.9, and its dispersion is greater than 20 and is less than 35, the glass of preferred HZF4CDGM, and refractive index and dispersion are respectively 1.728,28.3.
The refractive index of described 5th lens is greater than 1.65 and is less than 1.80, and its dispersion is greater than 20 and is less than 35, and the special moulded glass of preferred Japanese SUMITA KCD120 low melting point aspheric surface, refractive index and dispersion are respectively 1.7225,29.2.
The refractive index of described 6th lens is greater than 1.4 and is less than 1.65, and its dispersion is greater than 65 and is less than 75, preferably adopts HQK3CDGM, and refractive index and dispersion are 1.487,70.1 respectively.
The refractive index of described 7th lens is greater than 1.75 and is less than 1.9, and its dispersion is greater than 35 and is less than 50, and preferably adopt HZLAF55C CDGM, refractive index and dispersion are 1.83500,42.97 respectively.
The refractive index of described 8th lens is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, preferred HZLAF50B CDGM, and refractive index and dispersion are respectively 1.804,46.5; The refractive index of described 9th lens is greater than 1.6 and is less than 1.9, and its dispersion is greater than 20 and is less than 35, the glass of preferred HZF10CDGM, and refractive index and dispersion are respectively 1.689,31.1.
The parameter of described micro-singledigit camera full width camera lens is:
; Described 7th and the 8th aspherical lens formula and data are:
z = cr 2 1 + 1 - ( 1 + k ) c 2 r 2 + a 1 r 2 + a 2 r 4 + a 3 r 6 + a 4 r 8 + a 5 r 10 + a 6 r 12 . . . . . .
The invention has the beneficial effects as follows:
The present invention adopts sphere to add aspheric surface compact design, avoids the aberration of the sphere produced because all adopting spherical mirror, simplifies structure and improves image quality.The special full width angle of view of this micro-singledigit camera is comparatively large, is applicable to portrait, landscape, the shooting of the photographic work of humane essay.Eyeglass all adopts glass material, improves single lens performance parameter.The yields of whole camera lens can be improved and be convenient to actual production.
Accompanying drawing explanation
Fig. 1 is the structural representation of digital camera full width camera lens of the present invention;
Fig. 2 is the MTF figure of digital camera full width camera lens of the present invention;
Fig. 3 is the curvature of field figure of digital camera full width camera lens of the present invention;
Fig. 4 is the optical distortion figure of digital camera full width camera lens of the present invention;
Fig. 5 is the relative exposure figure of digital camera full width camera lens of the present invention.
Embodiment
With reference to Fig. 1-5, effective focal length of the present invention is f=35mm, and relative aperture is F=2, and the full filed angle of whole optical system is 64 degree, and its camera lens overall length is 56mm, and structure, see Fig. 1, makes it effectively can improve the usability of camera lens.
With reference to Fig. 1, micro-singledigit camera full width camera lens, it comprises the first lens 1, second lens the 2, three lens the 3, four lens the 4, five lens the 5, six lens the 6, seven lens the 7, eight lens the 8, nine lens 9 successively from object space; Wherein, described first lens 1 be concave-concave to sphere negative lens, comprise concave surface first sphere and concave surface second sphere, the second lens 2 be biconvex to sphere positive lens, comprise convex surface second sphere and convex surface the 3rd sphere; First lens 1 and the second lens 2 form balsaming lens; 3rd lens 3 are biconvex sphere positive lens, comprise convex surface the 4th sphere and convex surface the 5th sphere; 4th lens 4 be concave-concave to sphere negative lens, comprise concave surface the 5th sphere and concave surface the 6th sphere; 3rd lens 3 and the 4th lens 4 form balsaming lens; 5th lens 5 are aspheric surface bent moon negative lens, comprise concave surface the 7th aspheric surface and convex surface the 8th aspheric surface; 6th lens 6 be concave-concave to sphere negative lens, comprise concave surface the 9th sphere and concave surface the tenth sphere; 7th lens 7 are biconvex sphere positive lens, comprise convex surface the tenth sphere and convex surface the 11 sphere; 6th lens 6 and the 7th lens 7 form balsaming lens; 8th lens 8 are biconvex sphere positive lens, comprise convex surface the 12 sphere and convex surface the 13 sphere; 9th lens 9 are concave-concave sphere negative lens, comprise concave surface the 13 sphere and concave surface the 14 sphere; 8th lens 8 and the 9th lens 9 form balsaming lens; First lens 1 are glass material to the 9th lens 9 and make; Diaphragm 10 is positioned on object space position, between the 4th lens 4 and the 5th lens 5.
The refractive index of the first lens 1 is greater than 1.4 and is less than 1.6, and its dispersion is greater than 50 and is less than 75, the glass of preferred HK51CDGM, and refractive index and dispersion are respectively 1.523,58.6.
The refractive index of the second lens 2 is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, and preferred HZLAF50B CDGM, refractive index and dispersion are respectively 1.804,46.5.
The refractive index of the 3rd lens 3 is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, and preferred HZLAF50B CDGM, refractive index and dispersion are respectively 1.804,46.5.
The refractive index of the 4th lens 4 is greater than 1.6 and is less than 1.9, and its dispersion is greater than 20 and is less than 35, the glass of preferred HZF4CDGM, and refractive index and dispersion are respectively 1.728,28.3.
The refractive index of the 5th lens 5 is greater than 1.65 and is less than 1.80, and its dispersion is greater than 20 and is less than 35, and the special moulded glass of preferred Japanese SUMITA KCD120 low melting point aspheric surface, refractive index and dispersion are respectively 1.7225,29.2.
The refractive index of the 6th lens 6 is greater than 1.4 and is less than 1.65, and its dispersion is greater than 65 and is less than 75, preferably adopts HQK3CDGM, and refractive index and dispersion are 1.487,70.1 respectively.
The refractive index of the 7th lens 7 is greater than 1.75 and is less than 1.9, and its dispersion is greater than 35 and is less than 50, and preferably adopt HZLAF55C CDGM, refractive index and dispersion are 1.83500,42.97 respectively.
The refractive index of the 8th lens 8 is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, preferred HZLAF50B CDGM, and refractive index and dispersion are respectively 1.804,46.5; The refractive index of the 9th lens 9 is greater than 1.6 and is less than 1.9, and its dispersion is greater than 20 and is less than 35, the glass of preferred HZF10CDGM, and refractive index and dispersion are respectively 1.689,31.1.
The parameter of described micro-singledigit camera full width camera lens is:
; Described 7th and the 8th aspherical lens formula and data are:
z = cr 2 1 + 1 - ( 1 + k ) c 2 r 2 + a 1 r 2 + a 2 r 4 + a 3 r 6 + a 4 r 8 + a 5 r 10 + a 6 r 12 . . . . . .
MTF performance is with reference to Fig. 2, and the diagonal line half of definition CMOS useful area is maximum image height, being set to 1.0 visual fields, for measuring the spatial frequency of different image height, getting 0.8 visual field, 0.6 visual field, 0 visual field.In the present embodiment, CMOS diagonal line half is 21.6mm, i.e. the image height of 1.0 visual fields, and the image height of 0.7 visual field is 21.6*0.7=15.12, the image height 21.6*0.5=10.8 of 0.5 visual field, and the image height of 0 visual field is 0mm, is CMOS central point.
Spherical aberration, astigmatism, illumination are with reference to Fig. 3 to Fig. 5, and digital camera full width camera lens meridianal curvature of field and Sagittal field curvature are greater than-0.16mm, are less than 0.12mm, and optical distortion is greater than-0.09% and is less than 0, all meet the requirement of imaging performance.The relative exposure at its edge reaches 33%, meets modern ultrahigh pixel (more than 2,400 ten thousand) micro-one camera imaging performance requirement.

Claims (10)

1. micro-singledigit camera full width camera lens, it is characterized in that, it comprises the first lens successively from object space, the second lens, the 3rd lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens; Wherein, described first lens be concave-concave to sphere negative lens, comprise concave surface first sphere and concave surface second sphere, the second lens be biconvex to sphere positive lens, comprise convex surface second sphere and convex surface the 3rd sphere; First lens become balsaming lens with the second lens combination; 3rd lens are biconvex sphere positive lens, comprise convex surface the 4th sphere and convex surface the 5th sphere; 4th lens be concave-concave to sphere negative lens, comprise concave surface the 5th sphere and concave surface the 6th sphere; 3rd lens become balsaming lens with the 4th lens combination; 5th lens are aspheric surface bent moon negative lens, comprise concave surface the 7th aspheric surface and convex surface the 8th aspheric surface; 6th lens be concave-concave to sphere negative lens, comprise concave surface the 9th sphere and concave surface the tenth sphere; 7th lens are biconvex sphere positive lens, comprise convex surface the tenth sphere and convex surface the 11 sphere; 6th lens become balsaming lens with the 7th lens combination; 8th lens are biconvex sphere positive lens, comprise convex surface the 12 sphere and convex surface the 13 sphere; 9th lens are concave-concave sphere negative lens, comprise concave surface the 13 sphere and concave surface the 14 sphere; 8th lens become balsaming lens with the 9th lens combination; First lens are glass material to the 9th lens and make; Diaphragm is positioned on object space position, between the 4th lens and the 5th lens.
2. micro-singledigit camera full width camera lens as claimed in claim 1, it is characterized in that, the refractive index of described first lens is greater than 1.4 and is less than 1.6, and its dispersion is greater than 50 and is less than 75, and the glass of preferred HK51 CDGM, refractive index and dispersion are respectively 1.523,58.6.
3. micro-singledigit camera full width camera lens as claimed in claim 1, it is characterized in that, the refractive index of described second lens is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, and preferred HZLAF50B CDGM, refractive index and dispersion are respectively 1.804,46.5.
4. micro-singledigit camera full width camera lens as claimed in claim 1, it is characterized in that, the refractive index of described 3rd lens is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, and preferred HZLAF50B CDGM, refractive index and dispersion are respectively 1.804,46.5.
5. micro-singledigit camera full width camera lens as claimed in claim 1, it is characterized in that, the refractive index of described 4th lens is greater than 1.6 and is less than 1.9, and its dispersion is greater than 20 and is less than 35, and the glass of preferred HZF4 CDGM, refractive index and dispersion are respectively 1.728,28.3.
6. micro-singledigit camera full width camera lens as claimed in claim 1, it is characterized in that, the refractive index of described 5th lens is greater than 1.65 and is less than 1.80, its dispersion is greater than 20 and is less than 35, the special moulded glass of preferred Japanese SUMITA KCD120 low melting point aspheric surface, refractive index and dispersion are respectively 1.7225,29.2.
7. micro-singledigit camera full width camera lens as claimed in claim 1, it is characterized in that, the refractive index of described 6th lens is greater than 1.4 and is less than 1.65, and its dispersion is greater than 65 and is less than 75, and preferably adopt HQK3 CDGM, refractive index and dispersion are 1.487,70.1 respectively.
8. micro-singledigit camera full width camera lens as claimed in claim 1, it is characterized in that, the refractive index of described 7th lens is greater than 1.75 and is less than 1.9, and its dispersion is greater than 35 and is less than 50, preferably adopt HZLAF55C CDGM, refractive index and dispersion are 1.83500,42.97 respectively.
9. micro-singledigit camera full width camera lens as claimed in claim 1, it is characterized in that, the refractive index of described 8th lens is greater than 1.75 and is less than 1.85, and its dispersion is greater than 35 and is less than 50, preferred HZLAF50B CDGM, and refractive index and dispersion are respectively 1.804,46.5; The refractive index of described 9th lens is greater than 1.6 and is less than 1.9, and its dispersion is greater than 20 and is less than 35, the glass of preferred HZF10CDGM, and refractive index and dispersion are respectively 1.689,31.1.
10. micro-singledigit camera full width camera lens as claimed in claim 1, is characterized in that, the parameter of described micro-singledigit camera full width camera lens is:
; Described 7th and the 8th aspherical lens formula and data are:
z = cr 2 1 + 1 - ( 1 + k ) c 2 r 2 + a 1 r 2 + a 2 r 4 + a 3 r 6 + a 4 r 8 + + a 5 r 10 + a 6 r 12 . . . . . .
CN201510101511.7A 2015-03-09 2015-03-09 Full-frame lens of micro single-lens reflex camera Expired - Fee Related CN104730692B (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN107329229A (en) * 2017-08-28 2017-11-07 深圳市广恩德科技有限公司 A kind of large aperture focal length high definition camera lens
CN108227160A (en) * 2016-12-22 2018-06-29 卡尔蔡司股份公司 For the highest image quality compact camera camera lens of the camera with full width sensor
CN109960004A (en) * 2017-12-22 2019-07-02 宁波舜宇车载光学技术有限公司 Optical lens
WO2022067957A1 (en) * 2020-09-29 2022-04-07 诚瑞光学(深圳)有限公司 Optical camera lens
WO2022077603A1 (en) * 2020-10-13 2022-04-21 诚瑞光学(深圳)有限公司 Image-capture optical lens

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WO2022077603A1 (en) * 2020-10-13 2022-04-21 诚瑞光学(深圳)有限公司 Image-capture optical lens

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