CN107272157B - Compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture camera lens - Google Patents
Compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture camera lens Download PDFInfo
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- CN107272157B CN107272157B CN201710594118.5A CN201710594118A CN107272157B CN 107272157 B CN107272157 B CN 107272157B CN 201710594118 A CN201710594118 A CN 201710594118A CN 107272157 B CN107272157 B CN 107272157B
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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
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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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 invention discloses a kind of compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture camera lens, it successively include the first lens from object space, second lens, the third lens, 4th lens, 5th lens, 6th lens, 7th lens, 8th lens, 9th lens, tenth lens and the 11st lens, wherein, first lens, second lens, 6th lens, 7th lens, 9th lens and the tenth lens are to be convex to object space spherical surface positive lens, the third lens are to be convex to object space spherical surface negative lens, 4th lens and the 11st lens are to concave towards object space spherical surface negative lens, 5th lens are in parallel to object space spherical surface positive lens, 8th lens are in parallel to object space spherical surface negative lens, diaphragm is between the third lens and the 4th lens.Compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture camera lens are standard lens, and aperture super large, appearance is exquisite, and cost performance is high.
Description
Technical field
The present invention relates to a kind of micro- one camera camera lenses of number, and in particular to a kind of specification is effective focal length 25mm, relative opening
The micro- one camera super large aperture M4/3 picture camera lens of number of diameter F=0.95.
Background technique
Domestic shutterbugs are numerous, huge to the demand of camera lens, however, the production design of domestic camera lens has sky
White, external mating camera lens price is high, and cost performance is low, causes heavy financial burden to vast commonness photograph fan.
Therefore, the camera lens that a kind of image quality is high, cost performance is high is developed, people's urgent problem to be solved is become.
Summary of the invention
In consideration of it, the purpose of the present invention is to provide a kind of compact effective focal length 25mm, relative aperture F=0.95 number
Code camera M4/3 picture camera lens, to solve the problems such as existing camera lens cost performance is low.
Present invention provide the technical scheme that compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/
3 picture camera lenses successively include the first lens from object space, and the second lens, the third lens, the 4th lens, the 5th lens, the 6th thoroughly
Mirror, the 7th lens, the 8th lens, the 9th lens, the tenth lens and the 11st lens, the first lens are just saturating to be convex to object space spherical surface
Mirror, including the first spherical surface of convex surface and the second spherical surface of convex surface, the second lens are to be convex to object space spherical surface positive lens, including convex surface third ball
Face and the 4th spherical surface of concave surface, the third lens are to be convex to object space spherical surface negative lens, including the 5th spherical surface of convex surface and the 6th spherical surface of concave surface,
4th lens are to concave towards object space spherical surface negative lens, including the 7th spherical surface of concave surface and the 8th spherical surface of plane, the 5th lens be in parallel to
Object space spherical surface positive lens, including the 9th spherical surface of plane and the tenth spherical surface of convex surface, the 8th spherical surface and the 9th spherical surface are glued, the 6th lens
To be convex to object space spherical surface positive lens, including the 11st spherical surface of convex surface and the 12nd spherical surface of plane, the 7th lens are to be convex to object space ball
Face positive lens, including the 13rd spherical surface of convex surface and the 14th spherical surface of convex surface, the 8th lens are in parallel to object space spherical surface negative lens, packet
The 15th spherical surface of concave surface and the 16th spherical surface of concave surface are included, the 14th spherical surface and the 15th spherical surface are glued, and the 9th lens are to be convex to object
Square spherical surface positive lens, including the 17th spherical surface of convex surface and the 18th spherical surface of plane, the tenth lens are to be convex to object space spherical surface positive lens,
Including the 19th spherical surface of convex surface and the 20th spherical surface of convex surface, the 11st lens are to concave towards object space spherical surface negative lens, including concave surface the
21 spherical surfaces and the 22nd spherical surface of concave surface, the 20th spherical surface and the 21st spherical surface are glued, diaphragm be located at the third lens and
Between 4th lens, the first lens to the 11st lens are glass material.
It is preferred that the refractive index of the first lens is greater than 1.65 less than 1.9, dispersion is greater than 40 less than 55；The refraction of second lens
Rate is greater than 1.8 less than 1.9, and dispersion is greater than 20 less than 45；The refractive index of the third lens is greater than 1.6 less than 1.9, and it is small that dispersion is greater than 20
In 43；The refractive index of 4th lens is greater than 1.6 less than 1.9, and dispersion is greater than 20 less than 43；The refractive index of 5th lens is greater than 1.8
Less than 1.95, dispersion is greater than 25 less than 50；The refractive index of 6th lens is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；
The refractive index of 7th lens is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；The refractive index of 8th lens is greater than 1.6 and is less than
1.9, dispersion is greater than 20 less than 43；The refractive index of 9th lens is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；Tenth thoroughly
The refractive index of mirror is greater than 1.8 less than 1.9, and dispersion is greater than 38 less than 45；The refractive index of 11st lens is greater than 1.75 less than 1.88,
Dispersion is greater than 20 less than 35.
Further preferably, the material of the first lens is HLAK67 CDGM, refractive index 1.741, dispersion 51.7；Second
The material of lens is HZLAF3 CDGM, refractive index 1.855, dispersion 36.61；The material of the third lens is HZF11 CDGM, folding
Penetrating rate is 1.699, dispersion 30.1；The material of 4th lens is HZF11 CDGM, refractive index 1.699, dispersion 30.1；The
The material of five lens is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；The material of 6th lens is HZLAF68B
CDGM, refractive index 1.883, dispersion 40.8；The material of 7th lens is HZLAF68B CDGM, and refractive index 1.883, dispersion is
40.8；The material of 8th lens is HZF11 CDGM, refractive index 1.699, dispersion 30.1；The material of 9th lens is
HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；The material of tenth lens is HZLAF68B CDGM, and refractive index is
1.883, dispersion 40.8；The material of 11st lens is HZF52 CDGM, refractive index 1.847, dispersion 23.8.
Further preferably, the parameter of the camera lens is as follows:
Compact effective focal length 25mm provided by the invention, relative aperture F=0.95 digital camera M4/3 picture camera lens
Advantage is: eyeglass is all made of spherical design, to correct various aberrations；Eyeglass all uses glass material, improves eyeglass
Quality itself, the clarity of camera lens；Improve the service performance of camera lens.
Detailed description of the invention
With reference to the accompanying drawing and embodiment the present invention is described in further detail:
Fig. 1 is compact effective focal length 25mm of the present invention, relative aperture F=0.95 digital camera M4/3 picture camera lens
Structural schematic diagram；
Fig. 2 is compact effective focal length 25mm of the present invention, relative aperture F=0.95 digital camera M4/3 picture camera lens
MTF figure；
Fig. 3 is compact effective focal length 25mm of the present invention, relative aperture F=0.95 digital camera M4/3 picture camera lens
Spherical aberration figure；
Fig. 4 is compact effective focal length 25mm of the present invention, relative aperture F=0.95 digital camera M4/3 picture camera lens
Curvature of field figure；
Fig. 5 is compact effective focal length 25mm of the present invention, relative aperture F=0.95 digital camera M4/3 picture camera lens
Relative illumination figure.
Specific embodiment
The present invention is further explained below in conjunction with specific embodiment, but the not limitation present invention.
As shown in Figure 1, compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture camera lens, from
Object space successively includes the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5, the 6th lens 6, and the 7th
Lens 7, the 8th lens 8, the 9th lens 9, the tenth lens 10 and the 11st lens 11, the first lens 1 are to be convex to object space spherical surface just
Lens, including the first spherical surface of convex surface and the second spherical surface of convex surface, the second lens 2 are to be convex to object space spherical surface positive lens, including convex surface the
Three spherical surfaces and the 4th spherical surface of concave surface, the third lens 3 are to be convex to object space spherical surface negative lens, including the 5th spherical surface of convex surface and concave surface the 6th
Spherical surface, the 4th lens 4 are to concave towards object space spherical surface negative lens, including the 7th spherical surface of concave surface and the 8th spherical surface of plane, the 5th lens 5 are
In parallel to object space spherical surface positive lens, including the 9th spherical surface of plane and the tenth spherical surface of convex surface, the 8th spherical surface and the 9th spherical surface are glued, the
Six lens 6 are to be convex to object space spherical surface positive lens, including the 11st spherical surface of convex surface and the 12nd spherical surface of plane, the 7th lens 7 are convex
To object space spherical surface positive lens, including the 13rd spherical surface of convex surface and the 14th spherical surface of convex surface, the 8th lens 8 are in parallel to object space spherical surface
Negative lens, including the 15th spherical surface of concave surface and the 16th spherical surface of concave surface, the 14th spherical surface and the 15th spherical surface are glued, the 9th lens
9 is are convex to object space spherical surface positive lens, including the 17th spherical surface of convex surface and the 18th spherical surface of plane, and the tenth lens 10 are to be convex to object space
Spherical surface positive lens, including the 19th spherical surface of convex surface and the 20th spherical surface of convex surface, the 11st lens 11 are to concave towards object space spherical surface to bear thoroughly
Mirror, including the 21st spherical surface of concave surface and the 22nd spherical surface of concave surface, the 20th spherical surface and the 21st spherical surface are glued, diaphragm 12
Between the third lens 3 and the 4th lens 4, the 1 to the 11st lens 11 of the first lens are glass material.
Compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture camera lens, aperture super large, property
For valence than high, eyeglass is all made of spherical design, and to correct various aberrations compared with the prior art, eyeglass all uses glass material, mentions
High quality of eyeglass itself and the clarity of camera lens, improve the service performance of camera lens.
As the improvement of technical solution, the refractive index of the first lens 1 is greater than 1.65 less than 1.9, and dispersion is greater than 40 less than 55；
The refractive index of second lens 2 is greater than 1.8 less than 1.9, and dispersion is greater than 20 less than 45；It is small that the refractive index of the third lens 3 is greater than 1.6
In 1.9, dispersion is greater than 20 less than 43；The refractive index of 4th lens 4 is greater than 1.6 less than 1.9, and dispersion is greater than 20 less than 43；5th
The refractive index of lens 5 is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；The refractive index of 6th lens 6 is greater than 1.8 and is less than
1.95, dispersion is greater than 25 less than 50；The refractive index of 7th lens 7 is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；8th
The refractive index of lens 8 is greater than 1.6 less than 1.9, and dispersion is greater than 20 less than 43；The refractive index of 9th lens 9 is greater than 1.8 and is less than
1.95, dispersion is greater than 25 less than 50；The refractive index of tenth lens 10 is greater than 1.8 less than 1.9, and dispersion is greater than 38 less than 45；Tenth
The refractive index of one lens 11 is greater than 1.75 less than 1.88, and dispersion is greater than 20 less than 35.
As the improvement of technical solution, the material of the first lens 1 is HLAK67 CDGM, refractive index 1.741, and dispersion is
51.7；The material of second lens 2 is HZLAF3 CDGM, refractive index 1.855, dispersion 36.61；The material of the third lens 3 is
HZF11 CDGM, refractive index 1.699, dispersion 30.1；The material of 4th lens 4 is HZF11 CDGM, and refractive index is
1.699, dispersion 30.1；The material of 5th lens 5 is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；6th thoroughly
The material of mirror 6 is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；The material of 7th lens 7 is HZLAF68B
CDGM, refractive index 1.883, dispersion 40.8；The material of 8th lens 8 is HZF11 CDGM, and refractive index 1.699, dispersion is
30.1；The material of 9th lens 9 is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；The material of tenth lens 10
For HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；The material of 11st lens 11 is HZF52 CDGM, refraction
Rate is 1.847, dispersion 23.8.
As the improvement of technical solution, the parameter of the camera lens is as follows:
Compact effective focal length 25mm provided by the invention, relative aperture F=0.95 digital camera M4/3 picture camera lens
Effective focal length is f=25mm, relative aperture F=0.95.
As shown in Fig. 2, the diagonal line half for defining CMOS effective area is maximum image height, 1.0 visual fields are set as, for measurement
The spatial frequency of different image heights takes 0.8 visual field, 0.6 visual field, 0 visual field.CMOS diagonal line half is 14mm in the present embodiment, i.e.,
The image height of 1.0 visual fields, the image height of 0.8 visual field are 14*0.8=11.2, the image height 14*0.6=8.4 of 0.6 visual field, the picture of 0 visual field
A height of 0mm, as CMOS central point.
As shown in Figures 3 to 5, compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture mirror
The spherical aberration of head is greater than negative 0.1mm and is less than positive 0.1mm, and meridianal curvature of field and Sagittal field curvature are greater than negative 0.2mm, are less than positive 0.2mm, full
The relative illumination of the requirement of sufficient imaging performance, edge reaches 20%, meets imaging performance requirement.
Claims (4)
1. compact 25mmF0.95 digital camera M4/3 picture camera lens, it is characterised in that: it successively include the first lens from object space,
Second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens, the 8th lens, the 9th lens, the tenth
Lens and the 11st lens, the first lens are to be convex to object space spherical surface positive lens, including the first spherical surface of convex surface and the second spherical surface of convex surface,
Second lens are to be convex to object space spherical surface positive lens, including convex surface third spherical surface and the 4th spherical surface of concave surface, the third lens are to be convex to object
Square spherical surface negative lens, including the 5th spherical surface of convex surface and the 6th spherical surface of concave surface, the 4th lens be concave towards object space spherical surface negative lens, including
The 7th spherical surface of concave surface and the 8th spherical surface of plane, the 5th lens be in parallel to object space spherical surface positive lens, including the 9th spherical surface of plane with
The tenth spherical surface of convex surface, the 8th spherical surface and the 9th spherical surface are glued, and the 6th lens are to be convex to object space spherical surface positive lens, including convex surface the tenth
One spherical surface and the 12nd spherical surface of plane, the 7th lens are to be convex to object space spherical surface positive lens, including the 13rd spherical surface of convex surface and convex surface
14th spherical surface, the 8th lens are in parallel including the 15th spherical surface of concave surface and the 16th spherical surface of concave surface to object space spherical surface negative lens,
14th spherical surface and the 15th spherical surface are glued, the 9th lens be convex to object space spherical surface positive lens, including the 17th spherical surface of convex surface with
The 18th spherical surface of plane, the tenth lens are to be convex to object space spherical surface positive lens, including the 19th spherical surface of convex surface and the 20th ball of convex surface
Face, the 11st lens are to concave towards object space spherical surface negative lens, including the 21st spherical surface of concave surface and the 22nd spherical surface of concave surface, second
Ten spherical surfaces and the 21st spherical surface are glued, and diaphragm is between the third lens and the 4th lens, the first lens to the 11st lens
It is glass material.
2. compact 25mmF0.95 digital camera M4/3 picture camera lens described in accordance with the claim 1, it is characterised in that:
The refractive index of first lens is greater than 1.65 less than 1.9, and dispersion is greater than 40 less than 55；
The refractive index of second lens is greater than 1.8 less than 1.9, and dispersion is greater than 20 less than 45；
The refractive index of the third lens is greater than 1.6 less than 1.9, and dispersion is greater than 20 less than 43；
The refractive index of 4th lens is greater than 1.6 less than 1.9, and dispersion is greater than 20 less than 43；
The refractive index of 5th lens is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；
The refractive index of 6th lens is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；
The refractive index of 7th lens is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；
The refractive index of 8th lens is greater than 1.6 less than 1.9, and dispersion is greater than 20 less than 43；
The refractive index of 9th lens is greater than 1.8 less than 1.95, and dispersion is greater than 25 less than 50；
The refractive index of tenth lens is greater than 1.8 less than 1.9, and dispersion is greater than 38 less than 45；
The refractive index of 11st lens is greater than 1.75 less than 1.88, and dispersion is greater than 20 less than 35.
3. compact 25mmF0.95 digital camera M4/3 picture camera lens described in accordance with the claim 1, it is characterised in that:
The material of first lens is HLAK67CDGM, refractive index 1.741, dispersion 51.7；
The material of second lens is HZLAF3CDGM, refractive index 1.855, dispersion 36.61；
The material of the third lens is HZF11CDGM, refractive index 1.699, dispersion 30.1；
The material of 4th lens is HZF11CDGM, refractive index 1.699, dispersion 30.1；
The material of 5th lens is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；
The material of 6th lens is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；
The material of 7th lens is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；
The material of 8th lens is HZF11CDGM, refractive index 1.699, dispersion 30.1；
The material of 9th lens is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；
The material of tenth lens is HZLAF68B CDGM, refractive index 1.883, dispersion 40.8；
The material of 11st lens is HZF52CDGM, refractive index 1.847, dispersion 23.8.
4. compact 25mmF0.95 digital camera M4/3 picture camera lens described in accordance with the claim 1, it is characterised in that: the mirror
The parameter of head is as follows:
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| CN201710594118.5A CN107272157B (en) | 2017-07-20 | 2017-07-20 | Compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture camera lens |
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| CN201710594118.5A CN107272157B (en) | 2017-07-20 | 2017-07-20 | Compact effective focal length 25mm, relative aperture F=0.95 digital camera M4/3 picture camera lens |
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| CN107272157B true CN107272157B (en) | 2019-07-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110501809B (en) * | 2019-09-20 | 2021-07-23 | 沈阳中一光学科技有限公司 | Full-frame macro lens of digital camera |
| CN110596863B (en) * | 2019-09-20 | 2022-03-18 | 沈阳中一光学科技有限公司 | Digital large-aperture medium-frame lens without phase opposition and with effective focal length F65 mm and F1.4 |
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| JP5151068B2 (en) * | 2006-05-23 | 2013-02-27 | 株式会社ニコン | Lens system and optical apparatus having the same |
| JP5434215B2 (en) * | 2009-02-03 | 2014-03-05 | 株式会社ニコン | Photographic lens and optical apparatus having the photographic lens |
| CN102455483B (en) * | 2010-10-20 | 2014-07-09 | 鸿富锦精密工业（深圳）有限公司 | Projection lens |
| CN103913817A (en) * | 2014-03-27 | 2014-07-09 | 徐中一 | Ultra-large-aperture full-width lens for digital single-lens reflex camera |
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