CN204287584U - Ultra-wide angle high definition day and night focuses mould camera lens - Google Patents

Ultra-wide angle high definition day and night focuses mould camera lens Download PDF

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Publication number
CN204287584U
CN204287584U CN201420792966.9U CN201420792966U CN204287584U CN 204287584 U CN204287584 U CN 204287584U CN 201420792966 U CN201420792966 U CN 201420792966U CN 204287584 U CN204287584 U CN 204287584U
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China
Prior art keywords
lens
night
ultra
wide angle
negative selenodont
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CN201420792966.9U
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Chinese (zh)
Inventor
杨樟洪
肖维军
张世忠
陈华萍
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Fujian Forecam Optics Co Ltd
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Fujian Forecam Optics Co Ltd
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Abstract

The utility model relates to a kind of ultra-wide angle high definition day and night and focuses mould camera lens, the optical system of described camera lens is provided with front group of A, light hurdle C and rear group of B successively along light direction, before described, group A is provided with negative selenodont lens A-1, negative selenodont lens A-2 and biconvex lens A-3 successively, its focal distance f a=-9.8mm; The gummed group that described rear group of B is provided with biconvex lens B-1 successively and is touched by biconvex lens B-2 and negative selenodont lens B-3, its focal distance f b=5.67mm.This camera lens has ultra-wide angle, high resolving power, object lens of large relative aperture, the day and night advantage such as confocal, while possessing chromatic sensitivity, ensures high definition and the ultra-wide angle of image in space among a small circle; Meanwhile, even if when insufficient light or night, also can ensure the high-quality of image, reach mega pixel; Being generally used for the little sighting distance places with great visual angle such as elevator cage is interior, hall, is the main product of miniature monitored video camera system.

Description

Ultra-wide angle high definition day and night focuses mould camera lens
Technical field
The utility model relates to the imaging lens device of supervisory system, and particularly a kind of ultra-wide angle high definition day and night focuses mould camera lens.
Background technology
Along with the fast development of science and technology, the raising gradually of people's awareness of safety, promote the continuous progress in security protection market, therefore market is also just ready to appear for the pursuit of more high-resolution lens.But, although market early has various tight shot to be applied in supervisory system, but their overall optical performance index is generally on the low side, even if some can reach the requirement of high definition, can in the little space of monitoring, still have many defects in high-resolution wide-angle, ultra-wide angle, high resolving power, object lens of large relative aperture, the day and night advantage such as confocal can not be had simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of ultra-wide angle high definition day and night to focus mould camera lens, while possessing chromatic sensitivity, ensures high definition and the ultra-wide angle of image in space among a small circle; Meanwhile, even if when insufficient light or night, also can ensure the high-quality of image, reach mega pixel.
To achieve these goals, the technical solution of the utility model is: a kind of ultra-wide angle high definition day and night focuses mould camera lens, the optical system of described camera lens is provided with front group of A, light hurdle C and rear group of B successively along light direction, before described, group A is provided with negative selenodont lens A-1, negative selenodont lens A-2 and biconvex lens A-3 successively, its focal distance f a=-9.8mm; The gummed group that described rear group of B is provided with biconvex lens B-1 successively and is touched by biconvex lens B-2 and negative selenodont lens B-3, its focal distance f b=5.67mm.
Further, the airspace between described front group of A and rear group of B is 1.16mm.
Further, the airspace organized before described between the negative selenodont lens A-1 of A and negative selenodont lens A-2 is 1.84mm, and the airspace between described negative selenodont lens A-2 and biconvex lens A-3 is 0.79mm.
Further, the airspace between the biconvex lens B-1 of described rear group of B and gummed group is 0.1mm.
Further, the physical construction of described camera lens comprises body tube and front trim ring, described front group of A and rear group of B to be arranged on successively in body tube and to be compressed by front trim ring, compressed by front trim ring on front side of described negative selenodont lens A-1, the first spacer ring is provided with between described negative selenodont lens A-1 and negative selenodont lens A-2, the second spacer ring is provided with between described biconvex lens A-3 and biconvex lens B-1, be provided with the 3rd spacer ring between described biconvex lens B-1 and biconvex lens B-2, located by the step in body tube on rear side of described negative selenodont lens B-3.
Further, described second spacer ring endoporus is provided with staged delustring line.
Further, described 3rd spacer ring adopts L-type stepped construction.
Compared with prior art, the utility model has following beneficial effect:
(1) the retrofocus type structure adopting positive negative power to be separated, the focal distance f of front group of A a=-9.8mm, the focal distance f of rear group of B b=5.67mm, after two constituent element combinations, makes rear leading role's reach of camera lens, the rear cut-off distance l '≤1.2f ' of camera lens.
(2) two panels of front group of A is born selenodont lens and is all selected the glass of high index of refraction to assume responsibility for very large focal power, make the oblique ray of wide-angle, after front group of A, fast " convergence ", reduce with the slanted angle of optical axis, through after organize B refraction after, the angle of chief ray and optical axis reduces, make camera lens achieve excellent aberration correction, and make the uniform-illumination of image planes.
(3) after the light hurdle C of camera lens, place the biconvex lens B-1 of cydariform, effectively utilize the aberration that it carrys out corrective lens, make the resolution of camera lens up to 3,000,000 pixels.
(4) camera lens has ultra-wide angle, high resolving power, object lens of large relative aperture, the day and night advantage such as confocal, is generally used in elevator cage, the little sighting distance place with great visual angle such as hall, is the main product of miniature monitored video camera system.
Below in conjunction with the drawings and specific embodiments, elaboration detailed is further done to the utility model.
Accompanying drawing explanation
Fig. 1 is the optical system diagram of the utility model embodiment.
Fig. 2 is the mechanical construction drawing of the utility model embodiment.
In figure: before A-, group A, A-1-bear selenodont lens A-1, and A-2-bears selenodont lens A-2, and A-3-biconvex lens A-3, organizes B after B-, B-1-biconvex lens B-1, and B-2-biconvex lens B-2, B-3-bear selenodont lens B-3, C-light hurdle C; 1-body tube, 2-first spacer ring, 3-second spacer ring, 4-the 3rd spacer ring.
Embodiment
As shown in Figure 1, a kind of ultra-wide angle high definition day and night focuses mould camera lens, the optical system of described camera lens along light from left to right incident direction be provided with front group of A, light hurdle C and rear group of B successively, before described, group A is provided with negative selenodont lens A-1, negative selenodont lens A-2 and biconvex lens A-3 successively, its focal distance f a=-9.8mm; The gummed group that described rear group of B is provided with biconvex lens B-1 successively and is touched by biconvex lens B-2 and negative selenodont lens B-3, its focal distance f b=5.67mm.
In the present embodiment, airspace between described front group of A and rear group of B is 1.16mm, before described, the airspace organized between the negative selenodont lens A-1 of A and negative selenodont lens A-2 is 1.84mm, airspace between described negative selenodont lens A-2 and biconvex lens A-3 is 0.79mm, and the airspace between the biconvex lens B-1 of described rear group of B and gummed group is 0.1mm.
In the present embodiment, the technical indicator of this camera lens realization is as follows: (1) focal length: f '=2.8mm; (2) relative aperture: F=1.8; (3) field angle: 2 ω >=114 ° (image space is to visual field 2 η ' >=φ 6mm); (4) resolution: can be adaptive with 3,000,000 pixel high-resolution CCD or cmos camera; (5) light path overall length ∑ L≤22.46mm, optics rear cut-off distance l ' >=6.05mm; (6) spectral line scope: 480nm ~ 850nm is suitable for.
During optical design, be under the prerequisite of ultra-wide angle in field angle, be that 480 ~ 850nm carries out aberration correction and balance to visible spectral regions, make camera lens all have excellent sensitivity in visible spectral regions, achieve day and night confocal, namely wide spectral is confocal.This camera lens can not only blur-free imaging under illumination condition in the daytime, at least can reach three mega pixels, under the extremely low environment of illumination at night, can also adopt infrared light filling, reach 1,000,000 picture elements clearly, also can reach three mega pixels.The utility model selects the optical glass material of high refraction, low dispersion, by designing and optimizing the various aberrations correcting optical lens, makes camera lens realize ultra-wide angle, high resolving power, object lens of large relative aperture, the day and night advantage such as confocal.
As shown in Figure 2, the physical construction of described camera lens comprises body tube 1 and front trim ring (omitting in figure), described front group of A and rear group of B to be arranged on successively in body tube 1 and to be compressed by front trim ring, compressed by front trim ring on front side of described negative selenodont lens A-1, the first spacer ring 2 is provided with between described negative selenodont lens A-1 and negative selenodont lens A-2, the second spacer ring 3 is provided with between described biconvex lens A-3 and biconvex lens B-1, the 3rd spacer ring 4 is provided with between described biconvex lens B-1 and biconvex lens B-2, located by the step in body tube 1 on rear side of described negative selenodont lens B-3.
In the present embodiment, described body tube 1 is formed by high-precision mold injection, and what in injection moulding process, inwall designed some equal thicknesses escapes meat, can save material, also ensure the homogeneity of injection moulding, make it coordinate with eyeglass tight ness rating to reach eyeglass installation requirement; Meanwhile, in order to ensure the consistance of right alignment and all lens light axis, in body tube 1, each ladder has strict size and status requirement, and external diameter requires the management and control of M12 × 0.5-4h thread; And the special material that adopts of body tube 1 makes this camera lens can afford to stand temperature to change from-20 DEG C to 60 DEG C and do not run Jiao.
In the present embodiment, described first spacer ring 2, second spacer ring 3, the 3rd spacer ring 4 process by advanced precision machine tool, high precision processing makes the first spacer ring 2 and the plane of lens contacts have enough accurate verticality to ensure the stationarity that eyeglass assembles, and the first spacer ring 2 is mainly used in ensureing the airspace between negative selenodont lens A-1 and negative selenodont lens A-2; Second spacer ring 3 ensure that itself dimensional requirement, it is made to have enough accurate verticality to ensure the accuracy that eyeglass assembles, be mainly used in ensureing the airspace between biconvex lens A-3 and biconvex lens B-1, endoporus adopts staged delustring line can eliminate parasitic light and halation better, also assures that the logical light of eyeglass and optical axis assemble simultaneously; Described 3rd spacer ring 4 adopts L-type stepped construction, ensure that between the logical light of biconvex lens B-1 and biconvex lens B-2 and eyeglass air distance and optical axis assemble.
When structural design, both the accuracy of the concentricity between eyeglass, precision and axial location had been ensured, make again camera lens overall construction design compact small and exquisite (overall dimensions φ 18mm × 15.98mm), simultaneously in order to eliminate the parasitic light of camera lens, done delustring line at the second spacer ring 3, the 3rd spacer ring 4 is made staged thus is eliminated the stability of halo problem and guarantee structure.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims (7)

1. a ultra-wide angle high definition day and night focuses mould camera lens, it is characterized in that: the optical system of described camera lens is provided with front group of A, light hurdle C and rear group of B successively along light direction, before described, group A is provided with negative selenodont lens A-1, negative selenodont lens A-2 and biconvex lens A-3 successively, its focal distance f a=-9.8mm; The gummed group that described rear group of B is provided with biconvex lens B-1 successively and is touched by biconvex lens B-2 and negative selenodont lens B-3, its focal distance f b=5.67mm.
2. ultra-wide angle high definition day and night according to claim 1 focuses mould camera lens, it is characterized in that: the airspace between described front group of A and rear group of B is 1.16mm.
3. ultra-wide angle high definition day and night according to claim 1 and 2 focuses mould camera lens, it is characterized in that: the airspace organized before described between the negative selenodont lens A-1 of A and negative selenodont lens A-2 is 1.84mm, and the airspace between described negative selenodont lens A-2 and biconvex lens A-3 is 0.79mm.
4. ultra-wide angle high definition day and night according to claim 1 and 2 focuses mould camera lens, it is characterized in that: the airspace between the biconvex lens B-1 of described rear group of B and gummed group is 0.1mm.
5. ultra-wide angle high definition day and night according to claim 1 focuses mould camera lens, it is characterized in that: the physical construction of described camera lens comprises body tube and front trim ring, described front group of A and rear group of B to be arranged on successively in body tube and to be compressed by front trim ring, compressed by front trim ring on front side of described negative selenodont lens A-1, the first spacer ring is provided with between described negative selenodont lens A-1 and negative selenodont lens A-2, the second spacer ring is provided with between described biconvex lens A-3 and biconvex lens B-1, the 3rd spacer ring is provided with between described biconvex lens B-1 and biconvex lens B-2, located by the step in body tube on rear side of described negative selenodont lens B-3.
6. ultra-wide angle high definition day and night according to claim 5 focuses mould camera lens, it is characterized in that: described second spacer ring endoporus is provided with staged delustring line.
7. ultra-wide angle high definition day and night according to claim 5 focuses mould camera lens, it is characterized in that: described 3rd spacer ring adopts L-type stepped construction.
CN201420792966.9U 2014-12-16 2014-12-16 Ultra-wide angle high definition day and night focuses mould camera lens Active CN204287584U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104977695A (en) * 2015-07-14 2015-10-14 福建福光股份有限公司 Large-visual field linear deformation micro mold camera lens
CN105158879A (en) * 2015-10-08 2015-12-16 福建福光股份有限公司 Wide-angle high-definition day-and-night light path structure and micro pick-up lens unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104977695A (en) * 2015-07-14 2015-10-14 福建福光股份有限公司 Large-visual field linear deformation micro mold camera lens
CN104977695B (en) * 2015-07-14 2018-01-12 福建福光股份有限公司 Big visual field linear deformation minisize mould pick-up lens
CN105158879A (en) * 2015-10-08 2015-12-16 福建福光股份有限公司 Wide-angle high-definition day-and-night light path structure and micro pick-up lens unit

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C56 Change in the name or address of the patentee

Owner name: FUJIAN FORECAM CO., LTD.

Free format text: FORMER NAME: FUJIAN FORECAM DIGITAL TECHNOLOGY CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue

Patentee after: FUJIAN FORECAM CO., LTD.

Address before: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue

Patentee before: Fujian Forecam Optics Co., Ltd.