CN103176263B - Three mega pixel day and night P-iris camera lenses - Google Patents
Three mega pixel day and night P-iris camera lenses Download PDFInfo
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- CN103176263B CN103176263B CN201310054116.9A CN201310054116A CN103176263B CN 103176263 B CN103176263 B CN 103176263B CN 201310054116 A CN201310054116 A CN 201310054116A CN 103176263 B CN103176263 B CN 103176263B
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Abstract
The present invention relates to a kind of three mega pixel day and night P-iris camera lenses, it is characterized in that: along light from left to right incident direction arrange respectively focal power be negative before organize A and focal power is rear group of positive B; Before described, group A is made up of the gummed group bearing selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 contiguity, the present invention three mega pixel day and night P-iris camera lens adopts P-IRIS CD-ROM drive, by automatically, accurately controlling diaphragm hole, thus obtain the image with better contrast, sharpness, resolution and the depth of field.
Description
technical field:
The present invention relates to a kind of three mega pixel day and night P-iris camera lenses.
background technology:
In monitoring trade, the lens aperture control selectable type of video camera is divided into fixing, manual and automatic three kinds.
The camera lens of fixed aperture can not regulate diaphragm hole; For manual iris camera lens, diaphragm hole is manual adjustments; Both are suitable for the constant position of light luminance, without the need to ceaselessly regulating logical light quantity.For automatic diaphragm lens, no matter be DC aperture or video aperture, all automatically can regulate diaphragm hole according to the change of light luminance; Be suitable for the situation that light luminance changes greatly, such as outdoor pick-up machine.DC aperture camera lens just changes according to light luminance, does not consider that diaphragm hole is on the impact of other image quality factors (as the depth of field).Use DC aperture camera lens, video camera is only known and is opened or closed aperture for light luminance; DC aperture camera lens can not be supplied to the information of video camera about aperture position.Do not have this information, video camera just can not control diaphragm hole effectively with optimized image quality.
summary of the invention:
The object of the present invention is to provide a kind of three mega pixel day and night P-iris camera lenses, this three mega pixels day and night P-iris camera lens has the image of better contrast, sharpness, resolution and the depth of field.
Technical scheme of the present invention:
The present invention three mega pixel day and night P-iris camera lens, is characterized in that: along light from left to right incident direction arrange respectively focal power be negative before organize A and focal power is rear group of positive B, before described group A by bear selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 touch before balsaming lens group form, the second balsaming lens group that the first balsaming lens group is formed, negative selenodont lens B-5, biconvex lens B-6 and negative selenodont lens B-7 touches that described rear group of B is touched by biconvex lens B-1, negative selenodont lens B-2, negative selenodont lens B-3 and biconvex lens B-4 is formed, in described front group, negative airspace between selenodont lens A-1 and front balsaming lens group is 6.167mm, airspace before in described front group between balsaming lens group and light hurdle C is 5.357mm, airspace in described rear group of B between light hurdle C and biconvex lens B-1 is 10.319mm, airspace between biconvex lens B-1 and negative selenodont lens B-2 is 2.517mm, negative airspace between selenodont lens B-2 and the first balsaming lens group is 0.680mm, airspace between first balsaming lens group and negative selenodont lens B-5 is 1.510mm, negative airspace between selenodont lens B-5 and the second balsaming lens group is 1.277mm.
The above-mentioned light hurdle C arranged between front group of A and rear group of B is iris.
Above-mentioned group of A and rear group of B is all arranged in body tube.
Spacer ring 2 is provided with between above-mentioned negative selenodont lens B-2 and negative selenodont lens B-3; Spacer ring 3 is provided with between biconvex lens B-4 and negative selenodont lens B-5.
Above-mentioned spacer ring 3 and spacer ring 2 are step spacer ring.
Above-mentionedly on the left of negative selenodont lens A-1, be provided with trim ring 4.
The camera lens that above-mentioned lens set is formed reaches following parameter: focal length: f '=3.3-10.5mm, relative aperture D/F=1/1.4, field angle 2 ω: 132 ° ~ 38 °, effective imaging surface n ' >=φ 7.18mm, be suitable for spectral range: 480nm ~ 850nm, resolution: adaptive with the high-definition camera of 3,000,000 pixels, light path overall length ∑ L≤47.95mm.
Above-mentioned body tube rear end is provided with Connection Block, the limited block of a projection is increased in Connection Block inside, the transition piece inside be provided with at body tube rear portion also increases by a projection, to ensure the scope that Connection Block regulates, in addition body tube rear surface increase 0.2mm turn to adjustment pad, fix with three sunk screws.
Advantage of the present invention:
1. the present invention three mega pixel day and night P-iris camera lens adopts P-IRIS CD-ROM drive, by automatically, accurately controlling diaphragm hole, thus obtains the image with better contrast, sharpness, resolution and the depth of field.
2. the reasonable distribution focal power of front group of A and rear group of B in the optical texture of this retrofocus type.In rear group of B, the 3rd arrangement of mirrors sheet of three-chip type structure is changed into cemented doublet group, make camera lens reach the short performance index of object lens of large relative aperture, wide-angle, structure length.
3., by the optical glass material of reasonable selection forward and backward two groups ten seven groups, select the optical glass material of high index of refraction, low dispersion as far as possible.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.
4. 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.
embodiment:
The present invention three mega pixel day and night P-iris camera lens, is characterized in that: along light from left to right incident direction arrange respectively focal power be negative before organize A and focal power is rear group of positive B, before described group A by bear selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 touch before balsaming lens group form, the second balsaming lens group that the first balsaming lens group is formed, negative selenodont lens B-5, biconvex lens B-6 and negative selenodont lens B-7 touches that described rear group of B is touched by biconvex lens B-1, negative selenodont lens B-2, negative selenodont lens B-3 and biconvex lens B-4 is formed, in described front group, negative airspace between selenodont lens A-1 and front balsaming lens group is 6.167mm, airspace before in described front group between balsaming lens group and light hurdle C is 5.357mm, airspace in described rear group of B between light hurdle C and biconvex lens B-1 is 10.319mm, airspace between biconvex lens B-1 and negative selenodont lens B-2 is 2.517mm, negative airspace between selenodont lens B-2 and the first balsaming lens group is 0.680mm, airspace between first balsaming lens group and negative selenodont lens B-5 is 1.510mm, negative airspace between selenodont lens B-5 and the second balsaming lens group is 1.277mm.
The above-mentioned light hurdle C arranged between front group of A and rear group of B is iris.
Because the resolution of this camera lens is very high, and the resolution of peripheral field and central market does not allow to make a big difference, so will guarantee the accurate, steadily and good hand touch of the actions such as the concentricity of each constituent element of system and focusing in structural design.
Above-mentioned group of A and rear group of B is all arranged in body tube 1, and body tube is the right alignment that ensure that whole light path of producing on same board; The off-axis aberration of optical lens is made to reach designing requirement.
In order to fixing len and ensure between each eyeglass airspace, be provided with spacer ring 2 between above-mentioned negative selenodont lens B-2 and negative selenodont lens B-3, the airspace between this spacer ring 2 principal security B-2 sheet and B-3, B-4 glue pellet; Be provided with spacer ring 3 between biconvex lens B-4 and negative selenodont lens B-5, this spacer ring ensure that the airspace between B-3, B-4 glue pellet and B-5 sheet.
Above-mentioned spacer ring 3 and spacer ring 2 are step spacer ring, and not only saving material but also can better playing the effect of interception parasitic light of step made by this spacer ring.
Above-mentionedly on the left of negative selenodont lens A-1, be provided with trim ring 4.Whole arrangement of mirrors sheet is fixed by trim ring 4, prevents eyeglass from loosening or dropping out, makes the Absorbable rod edge parasitic light of step simultaneously.
The camera lens that above-mentioned lens set is formed reaches following parameter: focal length: f '=3.3-10.5mm, relative aperture D/F=1/1.4, field angle 2 ω: 132 ° ~ 38 °, effective imaging surface n ' >=φ 7.18mm, be suitable for spectral range: 480nm ~ 850nm, resolution: adaptive with the high-definition camera of 3,000,000 pixels, light path overall length ∑ L≤47.95mm.
The impact of light path on parasitic light of camera lens of the present invention is more responsive, has done the process of delustring line respectively for this problem to the inwall 5 of fixing spacer ring 2,3, increases the area thus the impact reducing parasitic light that receive parasitic light.
For improving the cooperation of camera lens and video camera, when ensureing that Connection Block 23 rotates, non-360-degree rotates, above-mentioned body tube rear end is provided with Connection Block 6, the limited block of a projection is increased in Connection Block inside, transition piece 7 inside be provided with at body tube rear portion also increases by a projection, to ensure the scope that Connection Block regulates, increase turning to of 0.2mm at body tube rear surface in addition and adjust pad 8, fix with three sunk screws.
Advantage of the present invention:
1. the present invention three mega pixel day and night P-iris camera lens adopts P-IRIS CD-ROM drive, by automatically, accurately controlling diaphragm hole, thus obtains the image with better contrast, sharpness, resolution and the depth of field.In brief, P-iris means better image sharpness and the graphical usability of Yan Genggao to network video monitoring operator.
2. the reasonable distribution focal power of front group of A and rear group of B in the optical texture of this retrofocus type.In rear group of B, the 3rd arrangement of mirrors sheet of three-chip type structure is changed into cemented doublet group, make camera lens reach the short performance index of object lens of large relative aperture, wide-angle, structure length.
3., by the optical glass material of reasonable selection forward and backward two groups ten seven groups, select the optical glass material of high index of refraction, low dispersion as far as possible.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.
4. 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.
The light path of camera lens of the present invention is the optical texture of retrofocus type.It by focal power be negative before organize A and focal power is that rear group of positive B is formed; Front group of A bears selenodont lens by two panels and forms, and rear group of B, in the prototype of three-chip type Ke Ke type structure, changes the 3rd eyeglass as cemented doublet group into, to share the focal power of rear group, be beneficial to and improve camera lens relative aperture, be beneficial to the aberration correction of camera lens, especially the correction of wide spectral aberration.
Claims (8)
1. three mega pixel day and night P-iris camera lenses, is characterized in that: along light from left to right incident direction arrange respectively focal power be negative before organize A and focal power is rear group of positive B, before described group A by bear selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 touch before balsaming lens group form, the second balsaming lens group that the first balsaming lens group is formed, negative selenodont lens B-5, biconvex lens B-6 and negative selenodont lens B-7 touches that described rear group of B is touched by biconvex lens B-1, negative selenodont lens B-2, negative selenodont lens B-3 and biconvex lens B-4 is formed, in described front group, negative airspace between selenodont lens A-1 and front balsaming lens group is 6.167mm, airspace before in described front group between balsaming lens group and light hurdle C is 5.357mm, airspace in described rear group of B between light hurdle C and biconvex lens B-1 is 10.319mm, airspace between biconvex lens B-1 and negative selenodont lens B-2 is 2.517mm, negative airspace between selenodont lens B-2 and the first balsaming lens group is 0.680mm, airspace between first balsaming lens group and negative selenodont lens B-5 is 1.510mm, negative airspace between selenodont lens B-5 and the second balsaming lens group is 1.277mm.
2. three mega pixel day and night P-iris camera lenses according to claim 1, is characterized in that: the light hurdle C arranged between front group of A and rear group of B is iris.
3. three mega pixel day and night P-iris camera lenses according to claim 1 and 2, is characterized in that: described front group of A and rear group of B is all arranged in body tube.
4. three mega pixel day and night P-iris camera lenses according to claim 3, is characterized in that: be provided with spacer ring 2 between described negative selenodont lens B-2 and negative selenodont lens B-3; Spacer ring 3 is provided with between biconvex lens B-4 and negative selenodont lens B-5.
5. three mega pixel day and night P-iris camera lenses according to claim 4, is characterized in that: described spacer ring 3 and spacer ring 2 are step spacer ring.
6. three mega pixel day and night P-iris camera lenses according to claim 5, is characterized in that: on the left of negative selenodont lens A-1, be provided with trim ring 4.
7. three mega pixel day and night P-iris camera lenses according to claim 1,2,4,5 or 6, it is characterized in that: the camera lens that described lens set is formed reaches following parameter: focal length: f '=3.3-10.5mm, relative aperture D/F=1/1.4, field angle 2 ω: 132 ° ~ 38 °, effective imaging surface n ' >=φ 7.18mm, be suitable for spectral range: 480nm ~ 850nm, resolution: adaptive with the high-definition camera of 3,000,000 pixels, light path overall length ∑ L≤47.95mm.
8. three mega pixel day and night P-iris camera lenses according to claim 3, it is characterized in that: described body tube rear end is provided with Connection Block, the limited block of a projection is increased in Connection Block inside, the transition piece inside be provided with at body tube rear portion also increases by a projection, to ensure the scope that Connection Block regulates, in addition body tube rear surface increase 0.2mm turn to adjustment pad, fix with three sunk screws.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310054116.9A CN103176263B (en) | 2013-02-20 | 2013-02-20 | Three mega pixel day and night P-iris camera lenses |
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| CN201310054116.9A CN103176263B (en) | 2013-02-20 | 2013-02-20 | Three mega pixel day and night P-iris camera lenses |
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| CN103176263A CN103176263A (en) | 2013-06-26 |
| CN103176263B true CN103176263B (en) | 2015-10-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389563B (en) * | 2013-08-15 | 2015-06-17 | 福建福光数码科技有限公司 | Super-definition camera lens adopting plastic CS interface structure |
| CN104459963B (en) * | 2014-12-18 | 2017-02-22 | 福建福光股份有限公司 | High-resolution manual zoom camera lens and control method thereof |
| 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 |
| CN104965292A (en) * | 2015-07-14 | 2015-10-07 | 福建福光股份有限公司 | Large-target-surface and high-resolution day and night lens and use method thereof |
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| CN1749801A (en) * | 2004-09-15 | 2006-03-22 | 株式会社尼康 | Wide zoom lens system |
| CN101093278A (en) * | 2006-06-22 | 2007-12-26 | 株式会社尼康 | Zoom lens system, imaging apparatus and method for varying focal length |
| JP2008241904A (en) * | 2007-03-26 | 2008-10-09 | Nidec Copal Corp | Zoom lens |
| CN101490594A (en) * | 2006-07-21 | 2009-07-22 | 株式会社尼康 | Variable power optical system, imaging device, method of varying magnification of variable power optical system |
| CN203250060U (en) * | 2013-02-20 | 2013-10-23 | 福建福光数码科技有限公司 | Three-mega-pixel day and night P-iris lens |
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- 2013-02-20 CN CN201310054116.9A patent/CN103176263B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1749801A (en) * | 2004-09-15 | 2006-03-22 | 株式会社尼康 | Wide zoom lens system |
| CN101093278A (en) * | 2006-06-22 | 2007-12-26 | 株式会社尼康 | Zoom lens system, imaging apparatus and method for varying focal length |
| CN101490594A (en) * | 2006-07-21 | 2009-07-22 | 株式会社尼康 | Variable power optical system, imaging device, method of varying magnification of variable power optical system |
| JP2008241904A (en) * | 2007-03-26 | 2008-10-09 | Nidec Copal Corp | Zoom lens |
| CN203250060U (en) * | 2013-02-20 | 2013-10-23 | 福建福光数码科技有限公司 | Three-mega-pixel day and night P-iris lens |
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