CN204556942U - Three mega pixel day and night lens - Google Patents

Three mega pixel day and night lens Download PDF

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Publication number
CN204556942U
CN204556942U CN201520254180.6U CN201520254180U CN204556942U CN 204556942 U CN204556942 U CN 204556942U CN 201520254180 U CN201520254180 U CN 201520254180U CN 204556942 U CN204556942 U CN 204556942U
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China
Prior art keywords
lens
arrangement
mirrors
airspace
selenodont
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Active
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CN201520254180.6U
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Chinese (zh)
Inventor
苏青年
肖维军
刘任重
唐礼量
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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 three mega pixel day and night lens, the physical construction of camera lens comprises for installing front group of A front arrangement of mirrors seat and the rear arrangement of mirrors seat for installing rear group of B, front arrangement of mirrors seat is installed in front arrangement of mirrors cylinder by front trim ring, rear arrangement of mirrors seat is installed in rear arrangement of mirrors cylinder by rear trim ring, front arrangement of mirrors cylinder is provided with the front group of nail can locking front arrangement of mirrors seat, lens barrel is provided with the front group of nail can locking rear arrangement of mirrors seat, the light path of the utility model camera lens is the optical texture of retrofocus type, in rear group of B, in the prototype of three-chip type Ke Ke type structure, 3rd eyeglass is changed into cemented doublet group, camera lens is made to reach object lens of large relative aperture, wide-angle, the performance index that structure length is short, and before reasonable selection, the optical glass material of rear two groups ten seven groups, by area of computer aided optical design and optimization, correct the various aberrations of optical lens perfectly, make the resolution of camera lens high, the requirement of 3,000,000 pixel high definition video shootings can be adapted to.

Description

Three mega pixel day and night lens
Technical field
The utility model relates to the imaging lens device of supervisory system, particularly a kind of three mega pixel day and night lens.
Background technology
Along with traffic network is day by day intensive, traffic is day by day busy, in order to safeguard traffic safety, prevent traffic jam, to realize under busy road conditions in perfect order; For development intelligent transportation system provides the day and night confocal camera lens of a high resolving power to have realistic meaning.Early stage tight shot structure is simple, performance index are low, can only be adaptive with the SD CCD of 20 ~ 300,000 pixels or cmos camera in the sharpness of image, shooting effect is general, picture is worth little, the needs that monitoring field " is seen " can only be adapted to, even do not read the number-plate number and do not see Chu's character features.Such resolution can not meet requirement and the society qualitative demand to supervisory system of present high-definition camera far away.
The congruence pursued with CCTV camera, as the critical component that monitoring image gathers, the new technology that manufacturer also develops while promoting camera lens quality, the rise etc. of the birth of face eyeglass, the popularization of infrared lens, the corresponding camera lens of mega pixel is asked as non-, its target only has one: improving image definition, improves image quality.Better picture quality, higher sharpness, is not only the keyword of 2015 Nian Ge camera lens producer requirement technology, eternal the pursuing a goal of camera lens product especially.
Utility model content
In order to overcome the deficiencies in the prior art, the utility model is intended to adapt to above-mentioned development trend, for video camera system provides a kind of optical index high, optics target surface is large, resolution is not less than the high definition camera lens of three mega pixels, can " video camera of high definition supports the use, and camera system is realized the three mega pixel day and night lens of scenery in the requirement of the high definition pick-up of high photokinesis variation range environment with 16:9 standard 1/2
The technical solution of the utility model is, a kind of three mega pixel day and night lens, the physical construction of described camera lens comprises for installing front group of A front arrangement of mirrors seat and the rear arrangement of mirrors seat for installing rear group of B, described front arrangement of mirrors seat is installed in front arrangement of mirrors cylinder by front trim ring, described rear arrangement of mirrors seat is installed in rear arrangement of mirrors cylinder by rear trim ring, described front arrangement of mirrors cylinder is provided with the front group of nail can locking front arrangement of mirrors seat, rear arrangement of mirrors cylinder is provided with the front group of nail can locking rear arrangement of mirrors seat.
Further, the optical system of described camera lens along light direction be provided with successively focal power be negative before organize A and focal power is rear group of positive B, light hurdle C is provided with between front group of A and rear group of B, before described, group A is provided with the second gummed group that negative selenodont lens A-1, biconcave lens A-2 and positive selenodont lens A-3, described rear group of B are being provided with biconvex lens B-1 successively, negative selenodont lens B-2, biconvex lens B-3, biconvex lens B-4 and biconcave lens B-5 touch the first gummed group and biconvex lens B-6 and negative selenodont lens B-7 touch successively.
Further, airspace between described front group of A and rear group of B is 18.13mm, in described front group, negative airspace between selenodont lens A-1 and biconcave lens A-2 is 4.14mm, airspace between positive selenodont lens A-3 and biconcave lens A-2 is 1.9mm, in described front group, positive airspace between selenodont lens A-3 and light hurdle C is 11.770mm, airspace in described rear group of B between biconvex lens B-1C and light hurdle is 6.350mm, airspace between biconvex lens B-1 and negative selenodont lens B-2 is 0.370mm, negative airspace between selenodont lens B-2 and biconvex lens B-3 is 0.100mm, airspace between balsaming lens group B-4 and negative moon biconvex lens B-3 is 0.100mm, airspace between balsaming lens group B-5 and balsaming lens group B-6 is 0.900mm.
Further, between described negative selenodont lens B-2 and biconvex lens B-3, between biconvex lens B-3 and biconvex lens B-4 and be provided with the spacer ring of step between biconcave lens A-2 and positive selenodont lens A-3.
Compared with prior art, the utility model has following beneficial effect:
1) the reasonable distribution focal power of front group of A and rear group of B in the optical texture of this retrofocus type.In the group of front and back, in the prototype of three-chip type Ke Ke type structure, first eyeglass is changed into three lens, make camera lens reach the short performance index of object lens of large relative aperture, wide-angle, structure length.
2) by the optical glass material of reasonable selection forward and backward two groups ten eight groups, select the optical glass material of high index of refraction, low dispersion as far as possible.Designed by area of computer aided optics zemax and optimize, correcting the various aberrations of optical lens perfectly, make the resolution of camera lens high, the requirement of 3,000,000 pixel high definition video shootings can be adapted to.
3) when optical design, aberration correction and balance are carried out to the wide spectral range of 480nm ~ 850nm, make camera lens have excellent picture element at wide spectral range, achieve wide spectral confocal.Camera lens can not only blur-free imaging under photoenvironment in the daytime, night pole low-light (level) or zero illumination environment under also can blur-free imaging by infrared light filling, the monitoring continuously that achieves 24 hours, and when day and night switching not defocusing, focus without the need to scene.
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: group A, A-1 selenodont lens A-1, A-2 biconcave lens A-2 before A-, A-3 positive selenodont lens A-3, organize B after B-, B-1 biconvex lens B-1, B-2 bear selenodont lens B-2, B-3 biconvex lens B-3, B-4 biconvex lens B-4, B-5 biconcave lens B-5, B-6 biconvex lens B-6, B-7 bears selenodont lens B-7, C-iris C; Arrangement of mirrors cylinder before 1-, arrangement of mirrors seat before 2-, trim ring before 3-, arrangement of mirrors cylinder after 4-, trim ring after 5-, dials nail before 6-, dials nail, 8-spacer ring, arrangement of mirrors seat after 9-after 7-.
Embodiment
As shown in Figure 1 and 2, a kind of three mega pixel day and night lens, it is characterized in that: the physical construction of described camera lens comprises for installing front group of A front arrangement of mirrors seat and the rear arrangement of mirrors seat for installing rear group of B, in order to arrangement of mirrors seat front described in fixing len is installed in front arrangement of mirrors cylinder by front trim ring, in order to arrangement of mirrors seat rear described in fixing len is installed in rear arrangement of mirrors cylinder by rear trim ring, move for preventing the focal length confirmed at gamma camera or move cam in vibrations process and cause focal length variations, described front arrangement of mirrors cylinder is provided with the front group of nail can locking front arrangement of mirrors seat, rear arrangement of mirrors cylinder is provided with the front group of nail can locking rear arrangement of mirrors seat.
In the present embodiment, the optical system of described camera lens along light direction be provided with successively focal power be negative before organize A and focal power is rear group of positive B, light hurdle C is provided with between front group of A and rear group of B, before described, group A is provided with the second gummed group that negative selenodont lens A-1, biconcave lens A-2 and positive selenodont lens A-3, described rear group of B are being provided with biconvex lens B-1 successively, negative selenodont lens B-2, biconvex lens B-3, biconvex lens B-4 and biconcave lens B-5 touch the first gummed group and biconvex lens B-6 and negative selenodont lens B-7 touch successively.
In the present embodiment, airspace between described front group of A and rear group of B is 18.13mm, in described front group, negative airspace between selenodont lens A-1 and biconcave lens A-2 is 4.14mm, airspace between positive selenodont lens A-3 and biconcave lens A-2 is 1.9mm, in described front group, positive airspace between selenodont lens A-3 and light hurdle C is 11.770mm, airspace in described rear group of B between biconvex lens B-1C and light hurdle is 6.350mm, airspace between biconvex lens B-1 and negative selenodont lens B-2 is 0.370mm, negative airspace between selenodont lens B-2 and biconvex lens B-3 is 0.100mm, airspace between balsaming lens group B-4 and negative moon biconvex lens B-3 is 0.100mm, airspace between balsaming lens group B-5 and balsaming lens group B-6 is 0.900mm.
In the present embodiment, in order to ensure the airspace between each eyeglass, between described negative selenodont lens B-2 and biconvex lens B-3, between biconvex lens B-3 and biconvex lens B-4 and be provided with the spacer ring of step between biconcave lens A-2 and positive selenodont lens A-3.
In the present embodiment, the eyeglass of front group of A is fixed by front trim ring, prevent eyeglass from loosening or dropping out, make tilting to prevent from blocking edge-light simultaneously, ensure the imaging clearly in high field angle, the eyeglass of rear group of B is pushed down by rear trim ring, ensures that the air distance between eyeglass has also fixedly organized the eyeglass of whole group.
In the present embodiment, the technical indicator of this camera lens realization is as follows:
(1) focal length: f '=3.6-10mm;
(2) relative aperture D/F=1/1.5;
(3) field angle 2 ω: 119 ° ~ 31.9 ° (effective imaging surface n ' >=φ 8mm);
(4) spectral range: 480nm ~ 850nm is suitable for;
(5) resolution: adaptive with the high-definition camera of 3,000,000 pixels; (6) light path overall length ∑ L≤51mm.
The light path of the utility model camera lens is the optical texture of retrofocus type, the reasonable distribution focal power of front group of A and rear group of B, in rear group of B, in the prototype of three-chip type Ke Ke type structure, 3rd eyeglass is changed into cemented doublet group, camera lens is made to reach object lens of large relative aperture, wide-angle, the performance index that structure length is short, and before reasonable selection, the optical glass material of rear two groups ten seven groups, select high index of refraction as far as possible, the optical glass material of low dispersion, by area of computer aided optical design and optimization, correct the various aberrations of optical lens perfectly, make the resolution of camera lens high, the requirement of 3,000,000 pixel high definition video shootings can be adapted to.
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 (4)

1. a mega pixel day and night lens, it is characterized in that: the physical construction of described camera lens comprises for installing front group of A front arrangement of mirrors seat and the rear arrangement of mirrors seat for installing rear group of B, described front arrangement of mirrors seat is installed in front arrangement of mirrors cylinder by front trim ring, described rear arrangement of mirrors seat is installed in rear arrangement of mirrors cylinder by rear trim ring, described front arrangement of mirrors cylinder is provided with the front group of nail can locking front arrangement of mirrors seat, rear arrangement of mirrors cylinder is provided with the front group of nail can locking rear arrangement of mirrors seat.
2. three mega pixel day and night lens according to claim 1, it is characterized in that: the optical system of described camera lens along light direction be provided with successively focal power be negative before organize A and focal power is rear group of positive B, light hurdle C is provided with between front group of A and rear group of B, before described, group A is provided with negative selenodont lens A-1 successively, biconcave lens A-2 and positive selenodont lens A-3, described rear group of B is provided with biconvex lens B-1 successively, negative selenodont lens B-2, biconvex lens B-3, the first gummed group that biconvex lens B-4 and biconcave lens B-5 touches and the second gummed group that biconvex lens B-6 and negative selenodont lens B-7 touches.
3. three mega pixel day and night lens according to claim 2, it is characterized in that: the airspace between described front group of A and rear group of B is 18.13mm, in described front group, negative airspace between selenodont lens A-1 and biconcave lens A-2 is 4.14mm, airspace between positive selenodont lens A-3 and biconcave lens A-2 is 1.9mm, in described front group, positive airspace between selenodont lens A-3 and light hurdle C is 11.770mm, airspace in described rear group of B between biconvex lens B-1C and light hurdle is 6.350mm, airspace between biconvex lens B-1 and negative selenodont lens B-2 is 0.370mm, negative airspace between selenodont lens B-2 and biconvex lens B-3 is 0.100mm, airspace between balsaming lens group B-4 and negative moon biconvex lens B-3 is 0.100mm, airspace between balsaming lens group B-5 and balsaming lens group B-6 is 0.900mm.
4. three mega pixel day and night lens according to claim 3, is characterized in that: between described negative selenodont lens B-2 and biconvex lens B-3, between biconvex lens B-3 and biconvex lens B-4 and be provided with the spacer ring of step between biconcave lens A-2 and positive selenodont lens A-3.
CN201520254180.6U 2015-04-24 2015-04-24 Three mega pixel day and night lens Active CN204556942U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104777590A (en) * 2015-04-24 2015-07-15 福建福光数码科技有限公司 Day-night dual-purpose lens with three million pixels
KR20180123622A (en) 2017-05-09 2018-11-19 둥관 위퉁 옵티컬 테크놀로지 컴퍼니 리미티드 Large aperture super wide angle and super high quality zoom lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104777590A (en) * 2015-04-24 2015-07-15 福建福光数码科技有限公司 Day-night dual-purpose lens with three million pixels
KR20180123622A (en) 2017-05-09 2018-11-19 둥관 위퉁 옵티컬 테크놀로지 컴퍼니 리미티드 Large aperture super wide angle and super high quality zoom lens

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GR01 Patent grant
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.