CN105068215B - Low distortion high resolution day and night camera lens - Google Patents
Low distortion high resolution day and night camera lens Download PDFInfo
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- CN105068215B CN105068215B CN201510498618.XA CN201510498618A CN105068215B CN 105068215 B CN105068215 B CN 105068215B CN 201510498618 A CN201510498618 A CN 201510498618A CN 105068215 B CN105068215 B CN 105068215B
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Abstract
The present invention relates to a kind of low distortion high resolution day and night camera lenses, along light, incident direction is equipped with preceding group of A and rear group B successively from front to back in the optical system of the camera lens, group A includes the convex concave eyeglass A 1 set gradually from front to back before described, the gluing unit and biconcave lens A 4 that one convex concave eyeglass A, 2 and one convex concave eyeglass A 3 touch, it includes planoconvex spotlight B 1 to organize B after described.The low distortion high resolution day and night camera lens relative aperture is big, it is easier to mould image, high resolution adapts to the requirement of 2,000,000 pixel high definition videos camera shooting, and distortion is smaller, can closer to object distance on realize blur-free imaging.
Description
Technical field
The present invention relates to a kind of low distortion high resolution day and night camera lenses, belong to field of photoelectric technology.
Background technology
With the fast development of smart city, the protrusion of urban road monitor project more is important.The highway of various regions
All it is " vehicle is full for trouble ", vehicle gives the burden getting worse that urban belt comes because of the problems such as scratching, exceeding the speed limit.So to the prison of road
Control shows its necessity.Meanwhile the demand to traffic monitoring cameras is also increasing.It is used in traffic monitoring cameras
Most is tight shot video camera, and tight shot design, manufacture come simple than zoom lens, and existing conventional fixed-focus
Lens distortion all can be bigger, cannot achieve blur-free imaging in closer object distance.
Invention content
In view of this, the object of the present invention is to provide a kind of high resolution, relative aperture big low distortion high-resolution days
Night dual-purpose camera lens, distortion it is smaller, can closer to object distance on realize blur-free imaging.
The present invention is realized using following scheme：A kind of low distortion high resolution day and night camera lens, the optics of the camera lens
Along light, incident direction is equipped with preceding group of A and rear group B successively from front to back in system, and the preceding group A includes setting successively from front to back
The gluing unit of the convex concave eyeglass A-3 contiguity of the convex concave eyeglass A-1 set, a convex concave eyeglass A-2 and one and double
Concavees lens A-4, it includes planoconvex spotlight B-1 to organize B after described.
Further, the airspace between the preceding group A and rear group B is 14.21mm.
Further, the airspace in the preceding group A between a convex concave eyeglass A-1 and gluing unit is 14.21mm,
Airspace between gluing unit and biconcave lens A-4 is 1.03mm.
Further, the camera lens mechanical structure includes the internal body tube for being equipped with the preceding group A and rear group C, described
Primary mirror tube rear end is provided with hickey, and primary mirror tube rear end is internally provided with and heads on the convex of planoconvex spotlight B-1 back edges
Ring；The first spacer ring, a convex concave eyeglass A-1 and gluing are folded between the biconcave lens A-4 and planoconvex spotlight B-1
The second spacer ring is folded between group, the body tube front end is screwed with the trim ring for compressing a convex concave eyeglass A-1 front edges.
Compared with prior art, the invention has the advantages that：
1, such tight shot relative aperture is larger, and luminous flux is big, and lens edge dispersion is small.Relative aperture is its maximum greatly
Advantage, then light can more enter camera lens.Heavy caliber camera lens is possible to generate large aperture.Large aperture is just easier
Mould image.
2, select high refractive index, low dispersion optical glass material, it is perfect by area of computer aided optical design and optimization
Ground corrects the various aberrations of optical lens, makes the high resolution of camera lens, adapts to the camera shooting of 2,000,000 pixel high definition videos
It is required that.
3, it is -0.02% that the distortion of this system is smaller.The distortion of common lens all can be bigger, this system is relative to old
Structural aberration has better control.By optimization, close-shot away from up to 0.7m, relative to common telephoto lens can closer to
Object distance on realize blur-free imaging.
4, in structure design, the accurate of the concentricity of camera lens, precision and axial position had not only been ensured, but also make camera lens as possible
It is compact-sized, beautiful.Spacer ring is devised simultaneously and trim ring carrys out fixing len, ensures the airspace between eyeglass, to reach mirror
The high image quality of head, low distortion.
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, specific embodiment and phase will be passed through below
Attached drawing is closed, invention is further described in detail.
Description of the drawings
Fig. 1 is the optical system schematic diagram of the embodiment of the present invention；
Fig. 2 is the mechanical structure schematic diagram of the embodiment of the present invention；
Figure label explanation：1- trim rings, the second spacer rings of 2-, the first spacer rings of 3-, 4- body tubes, mono- convex concave eyeglass A- of 5-
1,6- gluing units, 7- biconcave lens A-4,8- planoconvex spotlights B-1.
Specific implementation mode
A kind of low distortion high resolution day and night camera lens, the camera lens light path are anti-distance optical structure；The camera lens
Along light, incident direction is equipped with preceding group of A and rear group B successively from front to back in optical system, it is described before group A include from front to back according to
The gluing unit of the convex concave eyeglass A-3 contiguity of one convex concave eyeglass A-1 of secondary setting, a convex concave eyeglass A-2 and one with
And biconcave lens A-4, it includes planoconvex spotlight B-1 to organize B after described.
In the present embodiment, the airspace between the preceding group A and rear group B is 14.21mm.
In the present embodiment, the airspace in the preceding group A between a convex concave eyeglass A-1 and gluing unit is
14.21mm, the airspace between gluing unit and biconcave lens A-4 are 1.03mm.
All eyeglasses of the camera lens all select the glass of high refractive index, assume responsibility for prodigious focal power, make the skew ray of wide-angle,
After preceding group, and quickly " convergence ', reduce with the slanted angle of optical axis, after B refractions are organized after, the angle of chief ray and optical axis subtracts
It is small, so that camera lens is realized excellent aberration correction, and make the uniform-illumination of image planes.The diaphragm face of this system concave-concave in A groups is saturating
On the surface of mirror A-4, optical design is optimized, simplifies structure.
The optical system being made of above-mentioned lens set has reached following optical index：
1, focal length：f′=50mm；
2, relative aperture F=2.2；
3, image planes size：1/2”；
4, field angle：2w >=7.3 ° (image space is as 2 η ' of visual field >=Ф 8mm)；
5, resolution ratio：It can be adapted to adaptation with 2,000,000 pixel high-resolution CCD or cmos camera；
6, total length of light path ∑≤51.41mm, optics rear cut-off distance l ' >=19.32mm；
7, it is applicable in spectral line range：400nm~850nm.
In the present embodiment, the camera lens mechanical structure includes the internal body tube 4 for being equipped with the preceding group A and rear group C,
4 rear end of the body tube is provided with hickey, and 4 rear end of body tube is internally provided with and heads on planoconvex spotlight B-1 back end edges
The bulge loop of edge；The first spacer ring 3, a convex concave eyeglass A- are folded between the biconcave lens A-4 and planoconvex spotlight B-1
The second spacer ring 2 is folded between 1 and gluing unit, 4 front end of the body tube, which is screwed with, compresses a convex concave eyeglass A-1 front end edges
The trim ring 1 of edge.
Body tube is primary machining, can ensure the positional precision of body tube well, and tight in processing
Lattice require to ensure that the spacer ring of eyeglass airspace and the plane of lens contacts have an accurate verticality, and thus ensure that eyeglass fills
The accuracy matched.Stringent size Control is carried out to body tube internal diameter, it is made closely to reach eyeglass installation requirement with eyeglass cooperation
Concentricity and lens light axis consistency.And by spacer ring it is accurate processing come ensure the air between each eyeglass away from.It is whole
On body, by trim ring, ensure assembly stationarity, the stability of whole eyeglasses.Structure of the invention is light and handy, and it is small to meet overall volume
Principle ensures the accuracy of its precision in addition to cooperation is compact to use numerical control processing technology.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (2)
1. a kind of low distortion high resolution day and night camera lens, it is characterised in that：In the optical system of the camera lens certainly along light
Incident direction is equipped with preceding group of A and rear group B successively after forward direction, and the preceding group A includes the convex concave set gradually from front to back
Eyeglass A-1, the gluing unit of a convex convex concave eyeglass A-3 contiguity of concave eyeglass A-2 and one and biconcave lens A-4, it is described
Group B includes planoconvex spotlight B-1 afterwards；Airspace before described between group A and rear group B is 14.21mm；One is convex in the preceding group A
Airspace between one concave eyeglass A-1 and gluing unit is 14.21mm, between the air between gluing unit and biconcave lens A-4
It is divided into 1.03mm.
2. low distortion high resolution day and night camera lens according to claim 1, it is characterised in that：The machinery of the camera lens
Structure includes the internal body tube for being equipped with the preceding group A and rear group C, and the primary mirror tube rear end is provided with hickey, and
Primary mirror tube rear end is internally provided with the bulge loop for heading on planoconvex spotlight B-1 back edges；The biconcave lens A-4 and planoconvex spotlight B-
It is folded with the first spacer ring between 1, the second spacer ring, the primary mirror are folded between a convex concave eyeglass A-1 and gluing unit
Cylinder front end is screwed with the trim ring for compressing a convex concave eyeglass A-1 front edges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510498618.XA CN105068215B (en) | 2015-08-14 | 2015-08-14 | Low distortion high resolution day and night camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510498618.XA CN105068215B (en) | 2015-08-14 | 2015-08-14 | Low distortion high resolution day and night camera lens |
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| Publication Number | Publication Date |
|---|---|
| CN105068215A CN105068215A (en) | 2015-11-18 |
| CN105068215B true CN105068215B (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510498618.XA Active CN105068215B (en) | 2015-08-14 | 2015-08-14 | Low distortion high resolution day and night camera lens |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589524B (en) * | 2017-09-26 | 2020-05-19 | 福建福光股份有限公司 | Compact long-focus television pick-up lens |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064169A (en) * | 2011-10-20 | 2013-04-24 | 亚洲光学股份有限公司 | Image shooting lens |
| CN204989596U (en) * | 2015-08-14 | 2016-01-20 | 福建福光股份有限公司 | Dual -purpose camera lens of low distortion high resolution day night |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007240653A (en) * | 2006-03-06 | 2007-09-20 | Ricoh Co Ltd | Imaging lens, image reader, and image forming apparatus |
| JP2012133298A (en) * | 2010-12-03 | 2012-07-12 | Ricoh Co Ltd | Image read lens, image reader, and image forming apparatus |
| JP5895718B2 (en) * | 2012-06-04 | 2016-03-30 | 株式会社リコー | Imaging lens, camera, and portable information terminal |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064169A (en) * | 2011-10-20 | 2013-04-24 | 亚洲光学股份有限公司 | Image shooting lens |
| CN204989596U (en) * | 2015-08-14 | 2016-01-20 | 福建福光股份有限公司 | Dual -purpose camera lens of low distortion high resolution day night |
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