CN103176263A - Day and night P-iris lens with three million pixels - Google Patents
Day and night P-iris lens with three million pixels Download PDFInfo
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- CN103176263A CN103176263A CN2013100541169A CN201310054116A CN103176263A CN 103176263 A CN103176263 A CN 103176263A CN 2013100541169 A CN2013100541169 A CN 2013100541169A CN 201310054116 A CN201310054116 A CN 201310054116A CN 103176263 A CN103176263 A CN 103176263A
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Abstract
The invention relates to a day and night P-iris lens with three million pixels. The P-iris lens is characterized in that a front group A with negative focal power and a rear group B with positive focal power are respectively arranged in a light incident direction from the left to the right, and a negative crescent-shaped lens A-1, a double-concave lens A-2 and a double-convex lens A-3 are closely glued together to form the front group A. The day and night P-iris lens with the three million pixels has the advantages that a P-IRIS optical disc driver is adopted, and an aperture hole is automatically and precisely controlled, so that an image with optimal contrast, definition, resolution and depth of field can be acquired.
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 optional type of lens aperture control of video camera is divided into fixing, manual and automatic three kinds.
The camera lens of fixed aperture can not be regulated diaphragm hole; For the manual iris camera lens, diaphragm hole is manual adjustments; Both are suitable for light luminance constant position, need not ceaselessly to regulate logical light quantity.For automatic diaphragm lens, no matter be DC aperture or video aperture, all can automatically regulate diaphragm hole according to the variation of light luminance; Be suitable for light luminance variation situation greatly, such as the 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 for light luminance and is opened or closed aperture; DC aperture camera lens can not offer video camera about the information of aperture position.There is no this information, video camera just can not be controlled diaphragm hole effectively with the 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, the image that this three mega pixels day and night P-iris camera lens has better contrast, sharpness, resolution and the depth of field.
Technical scheme of the present invention:
the present invention's three mega pixel day and night P-iris camera lenses is characterized in that: along light from left to right incident direction focal power is set respectively is rear group of positive B for negative front group of A and focal power, described front group of A is made of the gummed group that negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 connect airtight, and described rear group of B is made of the gummed group that the gummed group that biconvex lens B-1, negative selenodont lens B-2, negative selenodont lens B-3 and biconvex lens B-4 connect airtight consists of, negative selenodont lens B-5, biconvex lens B-6 and negative selenodont lens B-7 connect airtight, airspace between described front group of A and rear group of B is 23.236mm, airspace in described front group between negative selenodont lens A-1 and balsaming lens group is 6.167mm, airspace 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, airspace between negative selenodont lens B-2 and balsaming lens group is 0.680mm, airspace between balsaming lens group and negative selenodont lens B-5 is 1.510mm, airspace between negative selenodont lens B-5 and balsaming lens group is 1.277mm.
The above-mentioned light hurdle C that arranges between front group of A and rear group of B is iris.
Above-mentioned group of A and rear group of B all are arranged in body tube.
Be provided with spacer ring 2 between above-mentioned negative selenodont lens B-2 and negative selenodont lens B-3; Be provided with spacer ring 3 between biconvex lens B-4 and negative selenodont lens B-5.
Above-mentioned spacer ring 3 and spacer ring 2 are the step spacer ring.
The above-mentioned trim ring 4 that is provided with on the left of negative selenodont lens A-1.
The camera lens that above-mentioned lens set consists of 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, applicable 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, at the inner limited block that increases by a projection of Connection Block, the transition piece inside that is provided with at the body tube rear portion also increases by a projection, with the scope that guarantees that Connection Block is regulated, turn to the adjustment pad what the body tube rear surface increased 0.2mm in addition, fix with three sunk screws.
Advantage of the present invention:
1. the present invention's three mega pixel day and night P-iris camera lenses adopt the P-IRIS CD-ROM drives, by automatically, accurately controlling diaphragm hole, thus the image that obtains having better contrast, sharpness, resolution and the depth of field.
In the optical texture of this retrofocus type reasonable distribution the focal power of front group of A and rear group of B.In rear group of B, the 3rd arrangement of mirrors sheet of three-chip type structure is changed into the cemented doublet group, make camera lens reach object lens of large relative aperture, wide-angle, the short performance index of structure length.
3. by the optical glass material of forward and backward two groups ten seven groups of reasonable selections, 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, proofreaied and correct the various aberrations of optical lens perfectly, make the resolution of camera lens high, can adapt to the requirement of 3,000,000 pixel high definition video shootings.
4. the wide spectral range to 480nm～850nm carries out aberration correction and balance when optical design, makes camera lens at wide spectral range, good picture element be arranged, and has realized that wide spectrum is confocal.Camera lens can not only photoenvironment in the daytime under blur-free imaging, also can blur-free imaging by infrared light filling under the environment of night utmost point low-light (level) or zero illumination, realized 24 hours continuous monitorings, and partially burnt when day and night switching, need not on-the-spot the focusing.
Description of drawings:
Fig. 1 is the index path of existing common pixel camera lens;
Fig. 2 is the index path of camera lens of the present invention;
Fig. 3 is the organigram of camera lens.
Embodiment:
the present invention's three mega pixel day and night P-iris camera lenses, along light from left to right incident direction focal power is set respectively is rear group of positive B for negative front group of A and focal power, described front group of A is made of the gummed group that negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 connect airtight, and described rear group of B is made of the gummed group that the gummed group that biconvex lens B-1, negative selenodont lens B-2, negative selenodont lens B-3 and biconvex lens B-4 connect airtight consists of, negative selenodont lens B-5, biconvex lens B-6 and negative selenodont lens B-7 connect airtight, airspace between described front group of A and rear group of B is 23.236mm, airspace in described front group between negative selenodont lens A-1 and balsaming lens group is 6.167mm, airspace 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, airspace between negative selenodont lens B-2 and balsaming lens group is 0.680mm, airspace between balsaming lens group and negative selenodont lens B-5 is 1.510mm, airspace between negative selenodont lens B-5 and balsaming lens group is 1.277mm.
The above-mentioned light hurdle C that arranges 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 visual field, edge and central market do not allow to make a big difference, thus to guarantee in structural design the actions such as the concentricity of each constituent element of system and focusing accurately, steadily and good hand touch.
Above-mentioned group of A and rear group of B all are arranged in body tube 1, and body tube is the right alignment of having guaranteed whole light path of producing on same board; Make the off-axis aberration of optical lens reach designing requirement.
For fixing len and guarantee airspace between each eyeglass, be provided with spacer ring 2 between above-mentioned negative selenodont lens B-2 and negative selenodont lens B-3, the airspace between these spacer ring 2 principal security B-2 sheets 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 has guaranteed the airspace between B-3, B-4 glue pellet and B-5 sheet.
Above-mentioned spacer ring 3 and spacer ring 2 are the step spacer ring, and this spacer ring is made not only having saved material but also can better having played the effect of interception parasitic light of step.
The above-mentioned trim ring 4 that is provided with on the left of negative selenodont lens A-1.Trim ring 4 is fixed whole arrangement of mirrors sheet, prevents that eyeglass from becoming flexible or dropping out, but makes simultaneously the absorption edge parasitic light of step.
The camera lens that above-mentioned lens set consists of 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, applicable spectral range: 480nm～850nm, resolution: adaptive with the high-definition camera of 3,000,000 pixels, light path overall length ∑ L≤47.95mm.
The light path of camera lens of the present invention is more responsive on the impact of parasitic light, respectively fixing spacer ring 2,3 inwall 5 has been done the delustring line for this problem and has processed, thereby increased the impact that the area that receives parasitic light reduces parasitic light.
For improving the cooperation of camera lens and video camera, non-360-degree rotation when guaranteeing Connection Block 23 rotation, above-mentioned body tube rear end is provided with Connection Block 6, at the inner limited block that increases by a projection of Connection Block, transition piece 7 inside that are provided with at the body tube rear portion also increase by a projection, with the scope that guarantees that Connection Block is regulated, increase turning to of 0.2mm at the body tube rear surface in addition and adjust pad 8, fix with three sunk screws.
Advantage of the present invention:
1. the present invention's three mega pixel day and night P-iris camera lenses adopt the P-IRIS CD-ROM drives, by automatically, accurately controlling diaphragm hole, thus the image that obtains having better contrast, sharpness, resolution and the depth of field.In brief, P-iris means better image sharpness and to the network video monitoring operator and the image availability of Yan Genggao.
In the optical texture of this retrofocus type reasonable distribution the focal power of front group of A and rear group of B.In rear group of B, the 3rd arrangement of mirrors sheet of three-chip type structure is changed into the cemented doublet group, make camera lens reach object lens of large relative aperture, wide-angle, the short performance index of structure length.
3. by the optical glass material of forward and backward two groups ten seven groups of reasonable selections, 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, proofreaied and correct the various aberrations of optical lens perfectly, make the resolution of camera lens high, can adapt to the requirement of 3,000,000 pixel high definition video shootings.
4. the wide spectral range to 480nm～850nm carries out aberration correction and balance when optical design, makes camera lens at wide spectral range, good picture element be arranged, and has realized that wide spectrum is confocal.Camera lens can not only photoenvironment in the daytime under blur-free imaging, also can blur-free imaging by infrared light filling under the environment of night utmost point low-light (level) or zero illumination, realized 24 hours continuous monitorings, and partially burnt when day and night switching, need not on-the-spot the focusing.
The light path of camera lens of the present invention is the optical texture of retrofocus type.It is that rear group of positive B consists of by focal power for negative front group of A and focal power; Front group of A is made of two negative selenodont lens, and rear group of B changes the 3rd eyeglass into the cemented doublet group on the prototype of three-chip type Ke Ke type structure, to share the focal power of rear group, be beneficial to and improve the camera lens relative aperture, be beneficial to the aberration correction of camera lens, the correction of especially wide spectrum aberration.
Claims (8)
1. mega pixel day and night P-iris camera lens is characterized in that: along light from left to right incident direction focal power is set respectively is rear group of positive B for negative front group of A and focal power, described front group of A is made of the gummed group that negative selenodont lens A-1, biconcave lens A-2 and biconvex lens A-3 connect airtight, and described rear group of B is made of the gummed group that the gummed group that biconvex lens B-1, negative selenodont lens B-2, negative selenodont lens B-3 and biconvex lens B-4 connect airtight consists of, negative selenodont lens B-5, biconvex lens B-6 and negative selenodont lens B-7 connect airtight, airspace between described front group of A and rear group of B is 23.236mm, airspace in described front group between negative selenodont lens A-1 and balsaming lens group is 6.167mm, airspace 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, airspace between negative selenodont lens B-2 and balsaming lens group is 0.680mm, airspace between balsaming lens group and negative selenodont lens B-5 is 1.510mm, airspace between negative selenodont lens B-5 and 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 that arranges 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, it is characterized in that: described front group of A and rear group of B all are 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; Be provided with spacer ring 3 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 the step spacer ring.
6. three mega pixel day and night P-iris camera lenses according to claim 5, is characterized in that: be provided with trim ring 4 on the left of negative selenodont lens A-1.
7. 2,4,5 or 6 described three mega pixel day and night P-iris camera lenses according to claim 1,, it is characterized in that: the camera lens that described lens set consists of 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, applicable 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 7, it is characterized in that: described body tube rear end is provided with Connection Block, at the inner limited block that increases by a projection of Connection Block, the transition piece inside that is provided with at the body tube rear portion also increases by a projection, with the scope that guarantees that Connection Block is regulated, turn to the adjustment pad what the body tube rear surface increased 0.2mm in addition, fix with three sunk screws.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310054116.9A CN103176263B (en) | 2013-02-20 | 2013-02-20 | Three mega pixel day and night P-iris camera lenses |
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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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| CN103176263A true CN103176263A (en) | 2013-06-26 |
| CN103176263B CN103176263B (en) | 2015-10-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389563A (en) * | 2013-08-15 | 2013-11-13 | 福建福光数码科技有限公司 | Super-definition camera lens adopting plastic CS interface structure |
| CN104459963A (en) * | 2014-12-18 | 2015-03-25 | 福建福光数码科技有限公司 | 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
- 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389563A (en) * | 2013-08-15 | 2013-11-13 | 福建福光数码科技有限公司 | Super-definition camera lens adopting plastic CS interface structure |
| CN104459963A (en) * | 2014-12-18 | 2015-03-25 | 福建福光数码科技有限公司 | 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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| CN103176263B (en) | 2015-10-28 |
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