CN201344993Y - CCTV camera lens - Google Patents
CCTV camera lens Download PDFInfo
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- CN201344993Y CN201344993Y CNU2008201702302U CN200820170230U CN201344993Y CN 201344993 Y CN201344993 Y CN 201344993Y CN U2008201702302 U CNU2008201702302 U CN U2008201702302U CN 200820170230 U CN200820170230 U CN 200820170230U CN 201344993 Y CN201344993 Y CN 201344993Y
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Abstract
The utility model discloses a closed-circuit television (CCTV) camera lens. In order from the object space side, the CCTV camera lens is provided with a first lens group, a second lens group, a third lens group, a fourth lens group and a fifth lens group; wherein, the first lens group has a positive refraction ability and is fixed; the second lens group has a negative refraction ability, can be moved, and is mainly used for zooming; the third lens group has a positive refraction ability and is fixed; the fourth lens group has a positive refraction ability, can be moved, and is mainly used for modifying the focal point position shift caused by zooming; and the fifth lens group has a positive refraction ability and is fixed. The CCTV camera lens effectively solves the problem of the prior camera lens of large volume, low zoom ratio and high cost, and has the advantages of high zoom ratio, good image definition and low cost, and is suitable for being used in CCTV monitoring equipment.
Description
Technical field
The utility model relates to a kind of camera lens, especially a kind ofly becomes the CCTV camera lens that multiple proportions is big, volume is little, cost is low.
Background technology
In recent years, along with the quick integration of photo-optics and digital technology, the combination of photoelectric technology has also promoted the fast development of photographic equipment, the developing rapidly of electronics industry micro-processing technology, the high speed of CPU and storage medium highly integrated makes it can handle more jumbo image information.Simultaneously, also realized more miniaturization, higher integrated level, reached higher spatial frequency as CCD, the CMOS of photo-sensitive cell.These all help realizing the miniaturization of camera lens.
At safety-security area, in order to use in the environment on a large scale, to the zoom shot camera lens, the requirement of particularly big change multiple proportions camera lens is more and more higher.Big become the camera lens of multiple proportions because to have covered wide-angle far away to taking the photograph, can finish visual range simultaneously extensively and visual range task far away, easy to operate, applied range and received increasing concern becomes the developing direction of following supervisory system.As the optical lens of one of key component of security product, its characteristics are to require under big relative aperture, and should meet miniaturization is lightweight, satisfies the requirement of hypermutation multiple proportions, high resolution again.Usually hypermutation multiple proportions camera lens is with multigroup lens set, many pieces of eyeglasses, and long lens length form reaches and adds the requirement that special low chromatic dispersion eyeglass and aspherical lens reach resolving power.
In zoom lens, the realization of zoom is the variation that realizes focal length by the mobile change cohort airspace of a certain group eyeglass in the camera lens, and the zoom ratio that camera lens reaches is big more, just requires longer lens length.In order to realize the camera lens miniaturization, just require every cohort component to carry on a shoulder pole more focal power, and can not make camera lens too complicated, will cause the aberration fluctuation like this along with the zoom process becomes big, be difficult to carry out good rectification, and be difficult in whole zooming range, obtain high optical property.Therefore,, accomplish high optical property, simplify the composition of optical system again as much as possible, become a difficult problem of this type of lens design for the big change multiple proportions of miniaturization zoom lens.
Open day is on September 3rd, 2008, publication number is that the patent document of CN101256268A discloses a kind of telephoto zoom lens, provide a kind of heavy caliber than interior focusing formula telephoto zoom lens, this telephoto zoom lens from object side successively by the 1st lens combination with positive light coke, the 2nd lens combination with negative power, the 3rd lens combination with positive light coke, the 4th lens combination with positive light coke constitutes, this telephoto zoom lens makes above-mentioned the 2nd lens combination and the 3rd lens combination move along optical axis to become doubly, and the 1st lens combination constitutes with the back group by preceding group, should constitute by the preceding joint lens of organizing by concavees lens and convex lens, the back group is by concavees lens, convex lens, 3 lens of convex lens constitute, and it makes back group of above-mentioned the 1st lens combination move along optical axis and focuses.This invention adopts 18 or 19 eyeglasses to constitute 4 lens combination, adopting second, third lens combination to move along optical axis becomes doubly, group and back group before simultaneously first lens combination being divided into, by moving the version that the back group is focused, complex structure not only, and first the lens combination eyeglass more and need to move, cause cost and camera lens volume significantly to increase.Open day be that the patent document that September 10, publication number in 2008 are CN 101261335A discloses a kind of zoom lens, comprise from the thing side to first lens combination, second lens combination, the 3rd lens combination and the 4th lens combination that are arranged in order as side, wherein second lens combination is suitable for moving between first lens combination and the 3rd lens combination, and the 4th lens combination is suitable for moving between the 3rd lens combination and picture side.In addition, first lens combination has positive diopter, and comprises at least one first compound lens.Second lens combination has negative diopter, and comprises at least one second compound lens, and second compound lens comprises at least one non-spherical lens, and wherein the adhesive surface of one of non-spherical lens is a concave surface, and adhesive surface is towards the thing side.The 3rd lens combination has positive diopter, and comprises at least one non-spherical lens.The 4th lens combination has positive diopter, and comprises at least by the biconvex lens and one the 3rd compound lens that extremely are arranged in order as side from the thing side.This zoom lens is made of four group of 11 eyeglass, and its volume is less, and cost is lower, but its big zoom capabilities and imaging definition are relatively poor.Open day be that the disclosed a kind of zoom lens of patent document that October 1, publication number in 2008 are CN 101276047A has also adopted similar structure.
The utility model content
The utility model is big for the volume that solves the camera lens existence, change multiple proportions problem little and that cost is high provides a kind of CCTV camera lens that multiple proportions is big, imaging definition good, cost is low that becomes.
The utility model is to reach the concrete technical scheme that above-mentioned technical purpose adopts to be: a kind of CCTV camera lens, comprise fixed lens group and mobile lens group, and the composition of described lens combination from the object space side is in order:
First lens combination has positive refractive power and stationkeeping;
Second lens combination has negative refractive power and its position can be moved;
The 3rd lens combination has positive refractive power and stationkeeping;
The 4th lens combination, having positive refractive power and position can move;
The 5th lens combination has positive refractive power and stationkeeping, and its lateral magnification β 5 is 1.2～1.5;
The said lens group satisfies simultaneously :-8＜fg1/fg2＜-6 ,-0.35＜fg2/fg3＜-0.2,1＜fg3/fg4＜2.5,0.1＜fg4/fg5＜0.3;
Wherein: fg1, fg2, fg3, fg4, fg5 represent the focal length of the first, second, third, fourth, the 5th lens combination respectively.Camera lens of the present utility model adopts the structure of five lens combination, wherein using transportable second lens combination to carry out outside the zoom, also between the 3rd lens combination and the 5th lens combination, be provided with and be used to revise because the 4th lens combination that move the focal position that zoom causes, when second lens combination moved, the 4th lens combination moved to revise the focal position that causes owing to zoom thereupon and moves.Like this, the imaging definition of camera lens just improves greatly, effectively improved the imaging definition decline situation that the traditional cameras camera lens causes during zoom on a large scale, thereby can under the prerequisite that does not increase camera lens volume, cost, improve the change multiple proportions of camera lens, also improve the imaging definition and the contrast of camera lens simultaneously.
As preferably, first lens combination comprises first cemented doublet of a positive refractive power, No. three lens of a positive refractive power, wherein, first cemented doublet is made up of lens and No. two lens with positive refractive power with negative refractive power; Wherein, No. two lens use the glass material of low chromatic dispersion, and the axle that brings when helping correcting length Jiao is gone up aberration, No. three two-sided light hurdle directions that bend towards of lens, positive focal power is provided, and its shape is for the incident angle of light on its each face reduced, and helps reducing in long spherical aberration when burnt.
Second lens combination comprises two No. four, No. five lens and second cemented doublets with positive refractive power with negative refractive power, wherein, second cemented doublet is made up of No. six lens and No. seven lens with negative refractive power with positive refractive power; Second lens combination can move, and main effect is a zoom, and when second lens combination during near first lens combination, focal length shortens, and when second lens combination during near the 3rd lens combination, focal length is elongated.
The 3rd lens combination comprises No. eight lens with positive refractive power, No. nine lens with negative refractive power, and comprise both-sided aspherical; The aspheric surface of this position is mainly used in the spherical aberration and the coma of correction system.
The 4th lens combination comprises the 3rd cemented doublet with positive refractive power, and the 3rd cemented doublet is made up of No. ten lens and ride on Bus No. 11 lens, wherein comprises the one side aspheric surface; The main effect of the 4th lens combination is to revise because move the focal position that the camera lens zoom causes, improves the imaging definition of camera lens, improves the imaging definition decline situation that camera lens causes during zoom on a large scale.
The 5th lens combination comprises ten No. two lens with negative refractive power, ten No. three lens with positive refractive power.The 5th lens combination is one group of meniscus shaped lens, and front surface and rear surface all bend towards the light hurdle, and positive focal power is provided, and is mainly used to the correction system astigmatism.Positive and negative two lens materials are assigned different abbe numbers, are mainly used to the correction system chromatic longitudiinal aberration.
As preferably, the ranges of indices of refraction of lens is 1.78～1.90, and the abbe number scope is 20～27; The ranges of indices of refraction of No. two lens is 1.48～1.55, and the abbe number scope is 60～82; The ranges of indices of refraction of No. three lens is 1.75～1.89, and the abbe number scope is 40～55; The focal length of lens, No. two lens and No. three lens satisfies:
2.1＜fL1L2/fg1＜2.8 and 0.8＜fL3/fg1＜1.3;
Wherein, fL1L2 represents the focal length of first balsaming lens, and fL3 represents the focal length of No. three lens, and fg1 represents the focal length of first lens combination.
As preferably, the ranges of indices of refraction of No. four lens is 1.75～1.89, and the abbe number scope is 40～55; The ranges of indices of refraction 1.75～1.89 of No. five lens, abbe number scope are 40～55; The ranges of indices of refraction of No. six lens is 1.75～1.89, and the abbe number scope is 40～55; The ranges of indices of refraction of No. seven lens is 1.78～1.90, and the abbe number scope is 20～27; The focal length of No. four, No. five, No. six and No. seven lens satisfies:
1＜fL4/fg2＜1.3,2.8＜fL5/fg2＜3.2 and 3.1＜fL6L7/fg2＜3.7;
Wherein, fL4, fL5 represent the focal length of No. four, No. five lens respectively, and fL6L7 represents the focal length of second gummed, and fg2 represents the focal length of second lens combination.
As preferably, the ranges of indices of refraction of No. eight lens is 1.75～1.85, and the abbe number scope is 36～53; The ranges of indices of refraction of No. nine lens is 1.78～1.90, and the abbe number scope is 20～27; The focal length of No. eight, No. nine lens satisfies:
0.4＜fL8/fg3＜0.53 and-0.9＜fL9/fg3＜-0.5;
Wherein, fL8, fL9 represent the focal length of No. eight, No. nine lens respectively, and fg3 represents the focal length of the 3rd lens combination.
The ranges of indices of refraction of No. ten lens is 1.50～1.60, and the abbe number scope is 55～65; The ranges of indices of refraction of ride on Bus No. 11 lens is 1.65～1.75, and the abbe number scope is 25～35.
The ranges of indices of refraction of ten No. two lens is 1.75～1.89, and the abbe number scope is 40～55; The ranges of indices of refraction of ten No. three lens is 1.50～1.60, and the abbe number scope is 38～50; Ten No. two, ten No. three lens satisfy:
-0.05＜fL12/fg5＜-0.03 and 0.05＜fL13/fg5＜0.07;
Wherein, fL12, fL13 represent the focal length of ten No. two, ten No. three lens respectively; Fg5 represents the focal length of the 5th lens combination.
As preferably, the light hurdle is arranged between second lens combination and the 3rd lens combination.
As preferably, picture side's side of the 5th lens combination is provided with sheet glass, and its thickness is the summation of OLPF, IR CUT, CCD WINDOWS.
The beneficial effects of the utility model are: it solves big, the change problem that multiple proportions is little and cost is high of volume that existing camera lens exists effectively.The utility model change multiple proportions is big, imaging definition good, cost is low, is suitable for cctv surveillance equipment and uses.
Description of drawings
Fig. 1 is a kind of structural representation of the short burnt state of the utility model CCTV camera lens.
Fig. 2 is a kind of structural representation of burnt state in the utility model CCTV camera lens.
Fig. 3 is a kind of structural representation of the long burnt state of the utility model CCTV camera lens.
Fig. 4 is the MTF figure of the short burnt state of the utility model CCTV camera lens.
Fig. 5 is the MTF figure of burnt state in the utility model CCTV camera lens.
Fig. 6 is the MTF figure of the long burnt state of the utility model CCTV camera lens.
Fig. 7 is the MTFvsfield figure of the short burnt state of the utility model CCTV camera lens.
Fig. 8 is the MTFvsfield figure of burnt state in the utility model CCTV camera lens.
Fig. 9 is the MTFvsfield figure of the long burnt state of the utility model CCTV camera lens.
Figure 10 is the relative exposure figure of the short burnt state of the utility model CCTV camera lens.
Figure 11 is the relative exposure figure of burnt state in the utility model CCTV camera lens.
Figure 12 is the relative exposure figure of the long burnt state of the utility model CCTV camera lens.
Figure 13 is the curvature of field, the distortion figure of the short burnt state of the utility model CCTV camera lens.
Figure 14 is the curvature of field, the distortion figure of burnt state in the utility model CCTV camera lens.
Figure 15 is the curvature of field, the distortion figure of the long burnt state of the utility model CCTV camera lens.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings the embodiment of technical solutions of the utility model is further described.
In as Fig. 1, Fig. 2, embodiment 1 shown in Figure 3, a kind of CCTV camera lens comprises fixed lens group and mobile lens group, and the composition of described lens combination from the object space side is in order:
The first lens combination G1, have positive refractive power and stationkeeping, the first lens combination G1 comprises first cemented doublet of a positive refractive power, No. three lens L3 of a positive refractive power, wherein, first cemented doublet is made up of a lens L1 and No. two lens L2 with positive refractive power with negative refractive power.
The second lens combination G2, has negative refractive power and its position can be moved, the second lens combination G2 comprises that two have No. four lens L4 of negative refractive power, No. five lens L5 and second cemented doublet with positive refractive power, wherein, second cemented doublet is made up of No. six lens L6 and No. seven lens L7 with negative refractive power with positive refractive power.
The 3rd lens combination G3 has positive refractive power and stationkeeping, and the 3rd lens combination G3 comprises No. eight lens L8 with positive refractive power, and No. eight lens L8 comprises one side aspheric surface R14; No. nine lens L9 with negative refractive power, No. nine lens L9 comprises one side aspheric surface R15;
The 4th lens combination G4, having positive refractive power and position can move; The 4th lens combination G4 comprises the 3rd cemented doublet with positive refractive power, and the 3rd cemented doublet is made up of No. ten lens L10 and ride on Bus No. 11 lens L11, wherein comprises one side aspheric surface R18;
The 5th lens combination G5 has positive refractive power and stationkeeping, and its lateral magnification β 5 is that the 1.2～1.5, the 5th lens combination G5 comprises ten No. two lens L12 with negative refractive power, ten No. three lens L13 with positive refractive power.
The light hurdle of camera lens is arranged between the second lens combination G2 and the 3rd lens combination G3, is provided with sheet glass in picture side's side of the 5th lens combination G5, and its thickness is the summation of OLPF, IR CUT, CCD WINDOWS.
Concrete implementation data such as the following table of embodiment 1:
Surf Radius Thickness Glass Diameter
L1 22.94133 0.3749281 1.846663， 23.784819 9.228999
L1 8.31489 1.730437 1.487490， 70.440000 8.652186
L2 -46.69435 0.02884062 8.652186
L3 8.359558 1.087291 1.804000， 46.580000 7.90233
L3 36.42011 0.1442031 7.613924
L4 Infinity 0.1730437 1.804000， 46.580000 3.236099
L4 1.724432 0.6492119 2.537975
L5 -8.760109 0.1730437 1.804000， 46.580000 2.537975
L5 8.760109 0.02884062 2.826381
L6 2.892821 0.836378 1.846663， 23.784819 2.566815
L6 -2.892821 0.1730437 1.804000， 46.580000 2.566815
L7 5.184925 9.539997 2.403013
STO Infinity 0.1990003 3.278223
L8 2.894054 0.9430883 1.804315， 40.819707 3.633918
L8 -40.33927 0.02884062 3.518556
L9 4.87518 0.1730437 1.846663， 23.784819 3.287831
L9 2.438265 1.956613 2.941743
L10 3.744743 1.009422 1.586420， 60.713872 2.711018
L10 -2.299709 0.1730437 1.698950， 30.050517 2.711018
L11 -4.717546 1.002012 2.595656
L12 -8.481971 0.1730437 1.804000， 46.580000 1.792988
L12 1.556582 0.2229051 1.652279
L13 1.899058 0.7354358 1.548140， 45.820728 1.836624
L13 -2.438265 0.8652186 1.849368
OLPF Infinity 0.3749281 1.516800， 64.200 1.534865
IRCUT Infinity 0.2163047 1.516800， 64.200 1.446927
BFL Infinity 0.3633903 1.420502
IMA Infinity 1.326998
Wherein, the asphericity coefficient of the aspheric surface R14 in the lens, R15 and R18 is:
Surface R14 ： EVENASPH
Conic -1.240158
Coeff on r 2 ： 0
Coeff on r 4 ： 0.0044797887
Coeff on r 6 ： -0.0003652406
Coeff on r 8 ： -9.1204164e-005
Coeff on r 10 ： 2.3098195e-005
Surface R15 ： EVENASPH
Conic 0
Coeff on r 2 ： 0
Coeff on r 4 ： 0.0043536833
Coeff on r 6 ： -0.00094430664
Coeff on r 8 ： -5.8605336e-005
Coeff on r 10 ： 3.6241682e-005
Surface R18 ： EVENASPH
Conic 1.136594
Coeff on r 2 ： 0
Coeff on r 4 ： -0.0067285245
Coeff on r 6 ： -0.00047942034
Coeff on r 8 ： -0.00052568454
Coeff on r 10 ： 0.00020640611
For we are that example is analyzed resolving power and required with SONY ICX229AK with the CCD of this camera lens coupling:
Valid pixel: 752 * 582, pixel size: 0.006 μ m;
The limiting resolution that is calculated it by pixel size is 83.3lp/mm, in accordance with international practices, 65%～70% standard with limiting resolution as the measurement center resolution, be 55lp/mm, 55%～60% standard with limiting resolution as the measurement edge resolution, be the check position of 50lp/mm periphery resolution at the center in the 70%-80% scope of diagonal angle line, i.e. image height 1.6～1.8 positions.
For the relation of modulation transfer function to image height, weigh in order to last standard, the result is:
| MTF | Short burnt | Middle burnt | Long burnt |
| Center 55lp/mm | ＞70％ | ＞60％ | ＞35％ |
| Edge 50lp/mm | ＞60％ | ＞60％ | ＞30％ |
By such result as seen, short burnt contrast to middle Jiao is quite high, and long burnt imaging has some to descend, but the resolution requirement that satisfies this CCD also is sufficient.
For relative exposure, full visual field, edge relative exposure is minimum at short burnt end, reach 40%, be visual acceptable degree, when focal length increases gradually, full visual field, edge relative exposure increases rapidly, all can reach more than 60% middle Jiao and long burnt position, is higher than the requirement of general 55%-60% (visual discernable).
For the curvature of field and distortion, for maximum, less than 10%, when focal length increases gradually, distortion reduces at short burnt end in distortion.
Claims (9)
1. a CCTV camera lens comprises fixed lens group and mobile lens group, and it is characterized in that: the composition of described lens combination from the object space side is in order:
First lens combination (G1) has positive refractive power and stationkeeping;
Second lens combination (G2) has negative refractive power and its position can be moved;
The 3rd lens combination (G3) has positive refractive power and stationkeeping;
The 4th lens combination (G4), having positive refractive power and position can move;
The 5th lens combination (G5) has positive refractive power and stationkeeping, and its lateral magnification β 5 is 1.2～1.5;
The said lens group satisfies simultaneously :-8＜fg1/fg2＜-6 ,-0.35＜fg2/fg3＜-0.2,1＜fg3/fg4＜2.5,0.1＜fg4/fg5＜0.3;
Wherein: fg1, fg2, fg3, fg4, fg5 represent the focal length of the first, second, third, fourth, the 5th lens combination respectively.
2. CCTV camera lens according to claim 1 is characterized in that:
First lens combination (G1) comprises first cemented doublet of a positive refractive power, No. three lens (L3) of a positive refractive power, wherein, first cemented doublet is made up of lens (L1) and No. two lens (L2) with positive refractive power with negative refractive power;
Second lens combination (G2) comprises two No. four, No. five lens (L4, L5) and second cemented doublets with positive refractive power with negative refractive power, wherein, second cemented doublet is made up of No. six lens (L6) and No. seven lens (L7) with negative refractive power with positive refractive power;
The 3rd lens combination (G3) comprises No. eight lens (L8) with positive refractive power, No. nine lens (L9) with negative refractive power, and comprise both-sided aspherical;
The 4th lens combination (G4) comprises the 3rd cemented doublet with positive refractive power, and the 3rd cemented doublet is made up of No. ten lens (L10) and ride on Bus No. 11 lens (L11), wherein comprises the one side aspheric surface;
The 5th lens combination (G5) comprises ten No. two lens (L12) with negative refractive power, ten No. three lens (L13) with positive refractive power.
3. CCTV camera lens according to claim 2 is characterized in that: the ranges of indices of refraction of lens (L1) is 1.78～1.90, and the abbe number scope is 20～27; The ranges of indices of refraction of No. two lens (L2) is 1.48～1.55, and the abbe number scope is 60～82; The ranges of indices of refraction of No. three lens (L3) is 1.75～1.89, and the abbe number scope is 40～55; The focal length of lens, No. two lens and No. three lens satisfies:
2.1＜fL1L2/fg1＜2.8 and 0.8＜fL3/fg1＜1.3;
Wherein, fL1L2 represents the focal length of first balsaming lens, and fL3 represents the focal length of No. three lens (L3), and fg1 represents the focal length of first lens combination (G1).
4. CCTV camera lens according to claim 2 is characterized in that: the ranges of indices of refraction of No. four lens (L4) is 1.75～1.89, and the abbe number scope is 40～55; The ranges of indices of refraction 1.75～1.89 of No. five lens (L5), abbe number scope are 40～55; The ranges of indices of refraction of No. six lens (L6) is 1.75～1.89, and the abbe number scope is 40～55; The ranges of indices of refraction of No. seven lens (L7) is 1.78～1.90, and the abbe number scope is 20～27; The focal length of No. four, No. five, No. six and No. seven lens satisfies:
1＜fL4/fg2＜1.3,2.8＜fL5/fg2＜3.2 and 3.1＜fL6L7/fg2＜3.7;
Wherein, fL4, fL5 represent the focal length of No. four, No. five lens respectively, and fL6L7 represents the focal length of second gummed, and fg2 represents the focal length of second lens combination (G2).
5. CCTV camera lens according to claim 2 is characterized in that: the ranges of indices of refraction of No. eight lens (L8) is 1.75～1.85, and the abbe number scope is 36～53; The ranges of indices of refraction of No. nine lens (L9) is 1.78～1.90, and the abbe number scope is 20～27; The focal length of No. eight, No. nine lens satisfies:
0.4＜fL8/fg3＜0.53 and-0.9＜fL9/fg3＜-0.5;
Wherein, fL8, fL9 represent the focal length of No. eight, No. nine lens respectively, and fg3 represents the focal length of the 3rd lens combination (G3).
6. CCTV camera lens according to claim 2 is characterized in that: the ranges of indices of refraction of No. ten lens (L10) is 1.50～1.60, and the abbe number scope is 55～65; The ranges of indices of refraction of ride on Bus No. 11 lens (L11) is 1.65～1.75, and the abbe number scope is 25～35.
7. CCTV camera lens according to claim 2 is characterized in that: the ranges of indices of refraction of ten No. two lens (L12) is 1.75～1.89, and the abbe number scope is 40～55; The ranges of indices of refraction of ten No. three lens (L13) is 1.50～1.60, and the abbe number scope is 38～50; Ten No. two, ten No. three lens satisfy:
-0.05＜fL12/fg5＜-0.03 and 0.05＜fL13/fg5＜0.07;
Wherein, fL12, fL13 represent the focal length of ten No. two, ten No. three lens respectively; Fg5 represents the focal length of the 5th lens combination (G3).
8. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described CCTV camera lens, it is characterized in that: the light hurdle is arranged between second lens combination (G2) and the 3rd lens combination (G3).
9. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described CCTV camera lens, it is characterized in that: picture side's side of the 5th lens combination (G5) is provided with sheet glass, and its thickness is the summation of OLPF, IR CUT, CCD WINDOWS.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201702302U CN201344993Y (en) | 2008-12-16 | 2008-12-16 | CCTV camera lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201702302U CN201344993Y (en) | 2008-12-16 | 2008-12-16 | CCTV camera lens |
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| CN201344993Y true CN201344993Y (en) | 2009-11-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253473A (en) * | 2011-01-17 | 2011-11-23 | 深圳市保千里电子有限公司 | Low-cost and high-resolution optical zoom lens |
| CN103676112A (en) * | 2012-09-11 | 2014-03-26 | 株式会社腾龙 | Zoom lens |
| CN104181682A (en) * | 2013-05-24 | 2014-12-03 | 株式会社腾龙 | Zoom Lens and Imaging Apparatus |
| CN104583835A (en) * | 2012-06-22 | 2015-04-29 | 株式会社腾龙 | Zoom lens, and imaging device equipped with same |
| CN108761749A (en) * | 2018-08-15 | 2018-11-06 | 舜宇光学(中山)有限公司 | Zoom lens |
| CN111880296A (en) * | 2020-08-12 | 2020-11-03 | 江西特莱斯光学有限公司 | Large-range zoom lens |
-
2008
- 2008-12-16 CN CNU2008201702302U patent/CN201344993Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253473A (en) * | 2011-01-17 | 2011-11-23 | 深圳市保千里电子有限公司 | Low-cost and high-resolution optical zoom lens |
| CN102253473B (en) * | 2011-01-17 | 2012-07-18 | 深圳市保千里电子有限公司 | Low-cost and high-resolution optical zoom lens |
| CN104583835A (en) * | 2012-06-22 | 2015-04-29 | 株式会社腾龙 | Zoom lens, and imaging device equipped with same |
| CN104583835B (en) * | 2012-06-22 | 2018-01-02 | 株式会社腾龙 | Zoom lens and the camera device for possessing this zoom lens |
| CN103676112A (en) * | 2012-09-11 | 2014-03-26 | 株式会社腾龙 | Zoom lens |
| CN103676112B (en) * | 2012-09-11 | 2015-11-25 | 株式会社腾龙 | Zoom lens |
| CN104181682A (en) * | 2013-05-24 | 2014-12-03 | 株式会社腾龙 | Zoom Lens and Imaging Apparatus |
| CN104181682B (en) * | 2013-05-24 | 2016-12-07 | 株式会社腾龙 | Zoom lens and camera head |
| CN108761749A (en) * | 2018-08-15 | 2018-11-06 | 舜宇光学(中山)有限公司 | Zoom lens |
| CN111880296A (en) * | 2020-08-12 | 2020-11-03 | 江西特莱斯光学有限公司 | Large-range zoom lens |
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