CN104777597A - High-definition varifocal monitoring pick-up lens suitable for 4K camera - Google Patents
High-definition varifocal monitoring pick-up lens suitable for 4K camera Download PDFInfo
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- CN104777597A CN104777597A CN201510175565.8A CN201510175565A CN104777597A CN 104777597 A CN104777597 A CN 104777597A CN 201510175565 A CN201510175565 A CN 201510175565A CN 104777597 A CN104777597 A CN 104777597A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/163—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
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Abstract
The invention relates to a high-definition varifocal monitoring pick-up lens suitable for a 4K camera. The high-definition varifocal monitoring pick-up lens comprises a lens cone, wherein a front fixed mirror group with a positive focal power, a variable-magnification mirror group with a negative focal power, a diaphragm with variable aperture, a middle fixed mirror group with the positive focal power and a compensating mirror group with the positive focal power are sequentially arranged in the lens cone in the light incidence direction; an automatic light driver for adjusting the aperture of the diaphragm is mounted on the lens cone. The lens has the advantages of large caliber, high resolution ratio, low distortion, variable focal length, broadband spectrum confocal scanning and the like; the system focal length of the lens is 11.8-40 mm; the monitoring angle is 42.5-12.5 degrees; the relative aperture D/f' is 1:1.4 in the whole journey; in the 0.8 field of view, the visible light MTF value is more than 0.3 under the condition of 200 lp/mm; the MTF value at the infrared 850 nm waveband is more than 0.25 under the condition of 200 lp/mm; the whole focal length section TV distortion is lower than 2.5%; the high-definition varifocal monitoring pick-up lens is suitable for the camera image surface which is 1/1.7 inch above, so as to meet the operating requirement on the 4K camera.
Description
Technical field
The present invention relates to security protection, home security, home furnishings intelligent field, particularly a kind of high definition varifocal monitoring camera camera lens being applicable to 4K video camera.
Background technology
Along with socioeconomic development, the lifting day by day of living standards of the people, transportation network is day by day busy, to the requirement that intelligent transportation efficient management and control proposition can be higher.Challenge is proposed to more superior Video Supervision Technique.Along with the proposition of " 4K " (8,000,000 pixel) ultra high-definition camcorder technology concept, video camera need arrange in pairs or groups more heavy caliber, more high resolving power, the confocal more superior pick-up lens of infrared broad spectrum to ensure superior video monitoring image quality.There is no to take into account each side at present on the market to require and the super clear zoom monitoring camera reaching the request for utilization of 4K video camera.
Summary of the invention
The object of the invention is to overcome above shortcoming, a kind of high definition varifocal monitoring camera camera lens being applicable to 4K video camera is provided, it is large that this camera lens has bore, resolution is high, distort low, focal length is variable, the advantages such as wide spectral is confocal, the system focal length of this camera lens is 11.8-40mm, monitoring angle is 42.5 ° ~ 12.5 °, the omnidistance 1:1.4 of relative aperture D/f ', in 0.8 visual field visible ray mtf value in 200lp/mm situation more than 0.3, infrared 850nm wave band mtf value in 200lp/mm situation more than 0.25, full focal length section TV distorts lower than 2.5%, be applicable to more than video camera image planes 1/1.7inch, thus meet the request for utilization of " 4K " video camera.
The present invention is achieved in that
A kind of high definition varifocal monitoring camera camera lens being applicable to 4K video camera, comprise lens barrel, it is characterized in that: the compensating glass group of fixed mirror group and positive light coke in the variable diaphragm of fixed mirror group before being provided with positive light coke successively along light direction in described lens barrel, the zoom mirror group of negative power, aperture, positive light coke; Lens barrel is also provided with the automatic CD-ROM drive for adjusting diaphragm aperture, each group of optical element forming pick-up lens need meet the following conditions:
The short < 3.62 of D1+D2=C1,3.45 < C1/f ' C ... 1.
The short > 0.9 of D3+l '=C2, l '/f ' C ... 2.
TC=C3, C3 < 4f ' C is short ... 3.
The short < 1.86 of 1.78 < f ' change/f ' C ... 4.
Wherein, D1 is the airspace between front fixed mirror group and zoom mirror group, D2 is the airspace between zoom mirror group and diaphragm, D3 is the airspace between middle fixed mirror group and compensating glass group, l ' is the airspace between the last one side of compensating glass group and image planes, TC be design main spectral line when being c spectral line varifocal monitoring camera camera lens first surface to the distance of image planes, C1, C2, C3 are the fixed values set according to actual operation requirements, f ' C is short is the shortest focal length value of varifocal monitoring camera camera lens when main spectral line is c spectral line, and f ' becomes the focal length of zoom mirror group.
Described lens barrel comprises front body tube and is connected to the rear body tube of front body tube rear end, and described front fixed mirror group and zoom mirror group are installed in front body tube, and described diaphragm, middle fixed mirror group and compensating glass group are installed in rear body tube; Described automatic CD-ROM drive is installed on rear body tube; The focal range of described front fixed mirror group is between 60mm ~ 70mm, the focal range of described zoom mirror group is between-20mm ~-28mm, the focal range of described middle fixed mirror group is between 45mm ~ 60mm, and the focal range of described compensating glass group is between 20mm ~ 35mm.
Described front fixed mirror group to be arranged in order along light direction by the first lens, the second lens, the 3rd lens and to form, wherein the first lens and the 3rd lens are positive selenodont lens, second lens are lenticular lens, and the gummed group of the first lens and the second lens composition contiguity;
Described zoom mirror group to be arranged in order along light direction by the 4th lens, the 5th lens, the 6th lens and to form, wherein the 4th lens and the 5th lens are double concave type lens, 6th lens are positive selenodont lens, and the gummed group of the 5th lens and the 6th lens composition contiguity;
Described middle fixed mirror group to be arranged in order along light direction by the 7th lens, the 8th lens, the 9th lens, the tenth lens and to form, wherein the 7th lens and the tenth lens are negative selenodont lens, 8th lens and the 9th lens are lenticular lens, and the gummed group of the 9th lens and the tenth lens composition contiguity;
Described compensating glass group to be arranged in order along light direction by the 11 lens, the 12 lens, the 13 lens, the 14 lens, the 15 lens and to form, wherein the 11 lens are positive selenodont lens, 12 lens, the 13 lens and the 14 lens are lenticular lens, 15 lens are double concave type lens, and the gummed group of the 11 lens and the 12 lens composition contiguity, the gummed group of the 14 lens and the 15 lens composition contiguity.
Each lens of described front fixed mirror group need meet following optical condition:
1.81<n1<1.95，33<v1<36.5；
1.44<n2<1.49，82<v2<90；
1.44<n3<1.49，82<v3<90；
Wherein n1-n3 is followed successively by the refractive index of the first lens-three lens, and v1-v3 is followed successively by the Abbe number of the first lens-three lens;
Each lens of described zoom mirror group need meet following optical condition:
1.46<n4<1.52，67<v4<73；
1.46<n5<1.52，67<v5<73；
1.7<n6<1.85，40<v6<47；
Wherein n4-n6 is followed successively by the refractive index of the 4th lens-six lens, and v4-v6 is followed successively by the Abbe number of the 4th lens-six lens;
Each lens of described middle fixed mirror group need meet following optical condition:
1.48<n7<1.52，60<v7<66；
1.44<n8<1.49，82<v8<90；
1.44<n9<1.49，82<v9<90；
1.81<n10<1.95，33<v10<36.5；
Wherein n7-n10 is followed successively by the refractive index of the 7th lens-ten lens, and v7-v10 is followed successively by the Abbe number of the 7th lens-ten lens;
Each lens of described compensating glass group need meet following optical condition:
1.75<n11<1.95，20<v11<26；
1.78<n12<1.95，20<v12<26；
1.65<n13<1.8，50<v13<60；
1.49<n14<1.55，70<v14<82；
1.8<n15<1.95，18<v15<28；
Wherein n11-n15 is followed successively by the refractive index of the 11 lens-15 lens, and v11-v15 is followed successively by the Abbe number of the 7th lens-ten lens.
Airspace between second lens of described front fixed mirror group and the 3rd lens is 0.1mm ~ 0.2mm;
Airspace between 3rd lens of described front fixed mirror group and the 4th lens of zoom mirror group is 1.5mm ~ 29mm;
Airspace between 4th lens of described zoom mirror group and the 5th camera lens is 4mm ~ 4.58mm;
6th lens of described zoom mirror group and the airspace of diaphragm are 2mm ~ 28mm;
The airspace of the 7th lens of described diaphragm and middle fixed mirror group is 3.5mm ~ 4.5mm;
7th lens of described middle fixed mirror group and the airspace of the 8th lens are 0.1mm ~ 0.2mm;
The airspace of the tenth lens of described middle fixed mirror group and the 11 lens of compensating glass group is 8mm ~ 11mm;
12 lens of described compensating glass group and the airspace of the 13 lens are 0.2mm ~ 0.4mm;
13 lens of described compensating glass group and the airspace of the 14 lens are 0.1mm ~ 0.2mm.
Described high definition varifocal monitoring camera camera lens also comprises the first trim ring, the second trim ring, the 3rd trim ring, the 4th trim ring, zoom lens barrel, compensates lens barrel, the first mechanical spacer ring, the second mechanical spacer ring, the 3rd mechanical spacer ring, the 4th mechanical spacer ring, the 5th mechanical spacer ring, described first lens are fixedly installed in the front end nozzle of front body tube, and it is outer and play position-limiting action to the front position of the first lens that described first trim ring is fixedly installed in the front end nozzle of front body tube, described second lens, the 3rd lens are fixedly installed in front body tube front cylinder along light direction successively, described first mechanical spacer ring is fixedly installed in the front cylinder inwall of front body tube and with the airspace of both restrictions between the second lens and the 3rd lens, is also provided with the first limited step for spacing 3rd lens rear position in the front cylinder of described front body tube, described zoom lens barrel is coaxially movably installed in the middle cylinder of front body tube, described 4th lens are fixedly installed in the nozzle of zoom lens barrel front end, described zoom lens barrel leading section internal perisporium is provided with and carries out the second spacing limited step to the 4th lens front face, described 5th lens, 6th lens are fixedly installed in zoom lens barrel cylindrical shell along light direction successively, described second trim ring to be fixedly installed in the cylindrical shell of zoom lens barrel rear end and to play position-limiting action to the rear end of the 5th lens and makes the front end face of the 5th lens be close to the rear end face of the 4th lens to ensure the airspace between the 4th lens and the 5th lens, the internal perisporium of described rear body tube is connected by the periphery wall of screw thread with front body tube, described rear body tube front end internal perisporium offers the ring groove for installing automatic CD-ROM drive, described 7th lens, 8th lens, 9th lens, tenth lens are fixedly installed in the front end nozzle of rear body tube along light direction successively, described 3rd trim ring is fixedly installed in rear body tube leading section internal perisporium and plays position-limiting action to the front position of the 7th lens, described second mechanical spacer ring be fixedly installed in rear body tube front cylinder inwall and between the 7th lens and the 8th lens with limit both airspace, described 3rd mechanical spacer ring be fixedly installed in rear body tube front cylinder inwall and between the 8th lens and the 9th lens with limit both airspace, described rear body tube internal perisporium is provided with the 3rd limited step for limiting the tenth position, lens rear face in the position being positioned at the tenth lens rear face, described compensation lens barrel is coaxially movably installed in the back cylinder of rear body tube, described 11 lens are fixedly installed in the front end nozzle of compensation lens barrel, described compensation lens barrel front end internal perisporium is provided with and carries out the 4th spacing limited step to the 11 lens front position, described 12 lens, 13 lens, 14 lens, 15 lens are fixedly installed in successively along light direction and compensate in lens barrel cylindrical shell, described 4th mechanical spacer ring be fixedly installed in compensate lens barrel cylinder inboard wall and between the 12 lens and the 13 lens with limit both airspace, described 5th mechanical spacer ring be fixedly installed in compensate lens barrel cylinder inboard wall and between the 13 lens and the 14 lens with limit both airspace, described 4th trim ring to be fixedly installed in compensating glass tube rear end cylindrical shell and to play position-limiting action to the back-end location of the 15 lens.
Described high definition varifocal monitoring camera camera lens also comprises the focal length setting mechanism be arranged on front body tube and the Compensation Regulation mechanism be arranged on rear body tube;
Described focal length setting mechanism comprise movable sleeve be placed in the zoom handwheel of front body tube periphery wall and more than one be arranged at zoom handwheel, zoom guide pin between front body tube and zoom lens barrel, the barrel of described front body tube is provided with quantity and in the past body tube axis centered by the spiral groove one of spiral extension corresponding with zoom guide pin with position, described zoom handwheel internal perisporium is provided with quantity and that along parallel zoom handwheel axial direction arrange straight one corresponding with zoom guide pin with position, one end of described zoom guide pin is fixedly connected with zoom lens barrel, the other end also can do straight line slippage through stretching into after spiral groove one in corresponding straight one in the straight one of correspondence,
Described Compensation Regulation mechanism comprise movable sleeve be placed in the compensation handwheel of rear body tube rear portion periphery wall and more than one be arranged at compensation handwheel, rear body tube and the zoom guide pin compensated between lens barrel, described rear body tube is provided with quantity and later body tube axis centered by the spiral groove two of spiral extension corresponding with zoom guide pin with position, described compensation handwheel internal perisporium is provided with quantity and that along parallel compensation handwheel axial direction arrange straight two corresponding with zoom guide pin with position, one end of described zoom guide pin is fixedly connected with compensation lens barrel, the other end also can do straight line slippage through stretching into after spiral groove two in corresponding straight two in the straight two of correspondence.
Described rear body tube periphery wall is provided with for dust-proof CD-ROM drive outer cover, described CD-ROM drive outer cover is provided with annular through groove, described compensation handwheel is fixedly connected with the rotational lock screw for rotation compensation handwheel, the head end of described rotational lock screw is placed on outside CD-ROM drive outer cover, the other end is fixedly connected with compensation handwheel through annular through groove, and described CD-ROM drive outer cover is provided with the CD-ROM drive upper cover for drawing CD-ROM drive line.
Described rear body tube exterior periphery is also provided with CS interface, and described CS interface is also provided with the 5th trim ring be fixed it outward.
Compared to prior art, the present invention has the following advantages:
(1) the high definition varifocal monitoring camera camera lens being applicable to 4K video camera provided by the invention, it is large that this camera lens has bore, resolution is high, distort low, focal length is variable, the advantages such as wide spectral is confocal, the system focal length of this camera lens is 11.8-40mm, monitoring angle is 42.5 ° ~ 12.5 °, the omnidistance 1:1.4 of relative aperture D/f ', in 0.8 visual field visible ray mtf value in 200lp/mm situation more than 0.3, infrared 850nm wave band mtf value in 200lp/mm situation more than 0.25, full focal length section TV distorts lower than 2.5%, be applicable to more than video camera image planes 1/1.7inch, thus meet the request for utilization of " 4K " video camera,
(2) the high definition varifocal monitoring camera camera lens being applicable to 4K video camera provided by the invention, by make camera lens first surface to the distance TC=C3 of image planes be fixed value, to measures such as cam curve pointwise correction and the diaphragms arranging limiting aperture light beam, when can guarantee that object distance changes in scope of design, do not need focusing that image planes just can be made to stablize, image multiplying power M and NA value are remained unchanged substantially;
(3) the high definition varifocal monitoring camera camera lens being applicable to 4K video camera provided by the invention, first lens of front fixed mirror group use glass materials refractive index n1 scope 1.81 to 1.95, the heavy-lanthanide flint glass of Abbe number V1 scope 33 to 36.5, object passes through high index of refraction, the heavy-lanthanide flint glass of low dispersion, increases the ability of system aggregates light, increases the clearance aperture of system, and effectively reduce the volume of first eyeglass, thus effectively reduce the volume of whole system; Second lens of front fixed mirror group use Refractive Index of Material n2 scope 1.44 to 1.49, the ED glass of Abbe number V2 scope 82 to 90, object converges by the light by first eyeglass A-1 further, and the aberration such as the astigmatism of active balance first eyeglass generation and chromatic longitudiinal aberration ratio chromatism, the confocal ability of wide spectral of effective elevator system; 3rd lens of front fixed mirror group use Refractive Index of Material n2 scope 1.44 to 1.49, the ED glass of Abbe number V2 scope 82 to 90, the further aberration such as chromatic longitudiinal aberration ratio chromatism, that produces of balanced system, the second order spectrum of effective balanced system, the confocal ability of wide spectral of more effective elevator system, is conducive to the resolution of elevator system;
(4) the high definition varifocal monitoring camera camera lens being applicable to 4K video camera provided by the invention, in the refractive index n7 scope 1.48-1.52 of the 7th lens of fixing group, Abbe number v7 scope 60-66, eyeglass bends towards diaphragm direction, effectively reduce the distortion of system, and bear most of aberration of system; In the 8th lens of fixing group use Refractive Index of Material n8 to enclose 1.44 to 1.49, Abbe number V8 encloses the ED glass of 82 to 90, in the 9th lens of fixing group use Refractive Index of Material n9 scope 1.44 to 1.49, Abbe number V9 to enclose the ED glass of 82 to 90; In the tenth lens of fixing group use the heavy-lanthanide flint glass of Refractive Index of Material n10 scope 1.81 to 1.95, Abbe number V10 scope 33 to 36.5; Middle fixed mirror group bears the aberrations such as most spherical aberrations of system, coma and astigmatism, the resolution of very effective elevator system; Design adopts the second order spectrum of ED glass active balance system; The confocal effect of infrared broad spectrum of elevator system telescope end;
(5) the high definition varifocal monitoring camera camera lens being applicable to 4K video camera provided by the invention, 11 lens of compensating glass group use the refractive index n11 scope 1.75 to 1.95 of material, Abbe number V11 scope 20 to 26,12 lens of described compensating glass group use the refractive index n12 scope 1.78 to 1.95 of material, Abbe number v12 scope 20 to 26; 13 lens of described compensating glass group use Refractive Index of Material n13 scope 1.65-1.8, Abbe number V13 scope 50-60; 14 lens of described compensating glass group use Refractive Index of Material n14 scope 1.49 to 1.55, Abbe number V14 scope 70 to 82; 15 lens of described compensating glass group use the refractive index n15 scope 1.8 to 1.95 of material, Abbe number V15 scope 18 to 28; Described compensating glass group assume responsibility for spherical aberration and the coma of system, for compensating the system focal plane shift produced when zoom mirror group moves, the image high definition of the full focal length segment limit of effective guarantee system;
(6) the high definition varifocal monitoring camera camera lens being applicable to 4K video camera provided by the invention, rear body tube exterior periphery is provided with CS interface general on the market, increases the versatility of system.
Accompanying drawing explanation
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings:
Fig. 1 is the structural representation that the present invention is applicable to the high definition varifocal monitoring camera camera lens of 4K video camera;
Fig. 2 is the index path that the present invention is applicable to the high definition varifocal monitoring camera camera lens of 4K video camera;
Fig. 3 is the three-dimensional structure schematic diagram compensating handwheel in Fig. 1.
Symbol description in figure: 1, first trim ring, 2, front body tube, 3, first mechanical spacer ring, 4, zoom lens barrel, 5, zoom guide pin, 7, second trim ring, 8, zoom handwheel, 9, rear body tube, 10, 3rd trim ring, 11, second mechanical spacer ring, 12, 3rd mechanical spacer ring, 13, automatic CD-ROM drive, 14, CD-ROM drive outer cover, 15, compensate lens barrel, 16, 4th mechanical spacer ring, 17, 5th mechanical spacer ring, 18, CD-ROM drive upper cover, 19, 4th trim ring, 20, CS interface, 21, 5th trim ring, 22, rotational lock screw, 23, compensate handwheel, 24, first lens, 25, second lens, 26, 3rd lens, 27, 4th lens, 28, 5th lens, 29, 6th lens, 30, 7th lens, 31, 8th lens, 32, 9th lens, 33, tenth lens, 34, 11 lens, 35, 12 lens, 36, 13 lens, 37, 14 lens, 38, 15 lens.
Embodiment
Below in conjunction with Figure of description and specific embodiment, content of the present invention is described in detail:
Be a kind of high definition varifocal monitoring camera camera lens being applicable to 4K video camera provided by the invention as Figure 1-3, comprise lens barrel, it is characterized in that: the compensating glass group D of fixed mirror group C and positive light coke in the variable diaphragm E of fixed mirror group A, the zoom mirror group B of negative power before being provided with positive light coke successively along light direction in described lens barrel, aperture, positive light coke; Lens barrel is also provided with the automatic CD-ROM drive 13 for adjusting diaphragm E aperture, each group of optical element forming pick-up lens need meet the following conditions:
The short < 3.62 of D1+D2=C1,3.45 < C1/f ' C ... 1.
The short > 0.9 of D3+l '=C2, l '/f ' C ... 2.
TC=C3, C3 < 4f ' C is short ... 3.
The short < 1.86 of 1.78 < f ' change/f ' C ... 4.
Wherein, D1 is the airspace between front fixed mirror group and zoom mirror group, D2 is the airspace between zoom mirror group and diaphragm E, D3 is the airspace between middle fixed mirror group and compensating glass group, l ' is the airspace between the last one side of compensating glass group and image planes F, TC be design main spectral line when being c spectral line varifocal monitoring camera camera lens first surface to the distance of image planes F, C1, C2, C3 is the fixed value set according to actual operation requirements, f ' C is short is the shortest focal length value of varifocal monitoring camera camera lens when main spectral line is c spectral line, f ' becomes the focal length of zoom mirror group.
Described lens barrel comprises front body tube 2 and is connected to the rear body tube 9 of front body tube 2 rear end, and described front fixed mirror group and zoom mirror group are installed in front body tube 2, and described diaphragm E, middle fixed mirror group and compensating glass group are installed in rear body tube 9; Described automatic CD-ROM drive 13 is installed on rear body tube 9; The focal range of described front fixed mirror group is between 60mm ~ 70mm, the focal range of described zoom mirror group is between-20mm ~-28mm, the focal range of described middle fixed mirror group is between 45mm ~ 60mm, and the focal range of described compensating glass group is between 20mm ~ 35mm.
As shown in Figure 2, described front fixed mirror group to be arranged in order along light direction by the first lens 24, second lens 25, the 3rd lens 26 and to form, wherein the first lens 24 and the 3rd lens 26 are positive selenodont lens, second lens 25 are lenticular lens, and the gummed group of the first lens 24 and the second lens 25 composition contiguity;
As shown in Figure 2, described zoom mirror group to be arranged in order along light direction by the 4th lens 27, the 5th lens 28, the 6th lens 29 and to form, wherein the 4th lens 27 and the 5th lens 28 are double concave type lens, 6th lens 29 are positive selenodont lens, and the gummed group of the 5th lens 28 and the 6th lens 29 composition contiguity;
As shown in Figure 2, described middle fixed mirror group to be arranged in order along light direction by the 7th lens 30, the 8th lens 31, the 9th lens 32, the tenth lens 33 and to form, wherein the 7th lens 30 and the tenth lens 33 are negative selenodont lens, 8th lens 31 and the 9th lens 32 are lenticular lens, and the gummed group of the 9th lens 32 and the tenth lens 33 composition contiguity;
As shown in Figure 2, described compensating glass group to be arranged in order along light direction by the 11 lens the 34, the 12 lens the 35, the 13 lens the 36, the 14 lens the 37, the 15 lens 38 and to form, wherein the 11 lens 34 are positive selenodont lens, 12 lens the 35, the 13 lens the 36 and the 14 lens 37 are lenticular lens, 15 lens 38 are double concave type lens, and the gummed group of the 11 lens the 34 and the 12 lens 35 composition contiguity, the gummed group of the 14 lens the 37 and the 15 lens 38 composition contiguity.
Each lens of described front fixed mirror group need meet following optical condition:
1.81<n1<1.95，33<v1<36.5；
1.44<n2<1.49，82<v2<90；
1.44<n3<1.49，82<v3<90；
Wherein n1-n3 is followed successively by the refractive index of the first lens 24-the 3rd lens 26, and v1-v3 is followed successively by the Abbe number of the first lens 24-the 3rd lens 26;
Each lens of described zoom mirror group need meet following optical condition:
1.46<n4<1.52，67<v4<73；
1.46<n5<1.52，67<v5<73；
1.7<n6<1.85，40<v6<47；
Wherein n4-n6 is followed successively by the refractive index of the 4th lens 27-the 6th lens 29, and v4-v6 is followed successively by the Abbe number of the 4th lens 27-the 6th lens 29;
Each lens of described middle fixed mirror group need meet following optical condition:
1.48<n7<1.52，60<v7<66；
1.44<n8<1.49，82<v8<90；
1.44<n9<1.49，82<v9<90；
1.81<n10<1.95，33<v10<36.5；
Wherein n7-n10 is followed successively by the refractive index of the 7th lens 30-the tenth lens 33, and v7-v10 is followed successively by the Abbe number of the 7th lens 30-the tenth lens 33;
Each lens of described compensating glass group need meet following optical condition:
1.75<n11<1.95，20<v11<26；
1.78<n12<1.95，20<v12<26；
1.65<n13<1.8，50<v13<60；
1.49<n14<1.55，70<v14<82；
1.8<n15<1.95，18<v15<28；
Wherein n11-n15 is followed successively by the refractive index of the 11 lens 34-the 15 lens 38, and v11-v15 is followed successively by the Abbe number of the 7th lens 30-the tenth lens 33.
Airspace between second lens 25 of described front fixed mirror group and the 3rd lens 26 is 0.1mm ~ 0.2mm;
Airspace between 3rd lens 26 of described front fixed mirror group and the 4th lens 27 of zoom mirror group is 1.5mm ~ 29mm;
Airspace between 4th lens 27 of described zoom mirror group and the 5th camera lens 28 is 4mm ~ 4.58mm;
6th lens 29 of described zoom mirror group are 2mm ~ 28mm with the airspace of diaphragm E;
The airspace of the 7th lens 30 of described diaphragm and middle fixed mirror group is 3.5mm ~ 4.5mm;
7th lens 30 of described middle fixed mirror group and the airspace of the 8th lens 31 are 0.1mm ~ 0.2mm;
Tenth lens 33 of described middle fixed mirror group are 8mm ~ 11mm with the airspace of the 11 lens 34 of compensating glass group;
The airspace of the 12 lens the 35 and the 13 lens 36 of described compensating glass group is 0.2mm ~ 0.4mm;
The airspace of the 13 lens the 36 and the 14 lens 37 of described compensating glass group is 0.1mm ~ 0.2mm.
As shown in Figure 1, described high definition varifocal monitoring camera camera lens also comprises the first trim ring 1, second trim ring 7, the 3rd trim ring 10, the 4th trim ring 19, zoom lens barrel 4, compensates the mechanical spacer ring 11 of lens barrel the 15, first mechanical spacer ring 3, second, the 3rd mechanical spacer ring 12, the 4th mechanical spacer ring 16, the 5th mechanical spacer ring 17, described first lens 24 are fixedly installed in the front end nozzle of front body tube 2, and it is outer and play position-limiting action to the front position of the first lens 24 that described first trim ring 1 is fixedly installed in the front end nozzle of front body tube 2, described second lens 25, the 3rd lens 26 are fixedly installed in front body tube 2 front cylinder along light direction successively, described first mechanical spacer ring 3 is fixedly installed in the front cylinder inwall of front body tube 2 and with the airspace of both restrictions between the second lens 25 and the 3rd lens 26, is also provided with the first limited step for spacing 3rd lens 26 back-end location in the front cylinder of described front body tube 2, described zoom lens barrel 4 is coaxially movably installed in the middle cylinder of front body tube 2, described 4th lens 27 are fixedly installed in the nozzle of zoom lens barrel 4 front end, described zoom lens barrel 4 leading section internal perisporium is provided with and carries out the second spacing limited step to the 4th lens 27 front end face, described 5th lens 28, 6th lens 29 are fixedly installed in zoom lens barrel 4 cylindrical shell along light direction successively, described second trim ring 7 to be fixedly installed in the cylindrical shell of zoom lens barrel 4 rear end and to play position-limiting action to the rear end of the 5th lens 28 and makes the front end face of the 5th lens 28 be close to the rear end face of the 4th lens 27 to ensure the airspace between the 4th lens 27 and the 5th lens 28, the internal perisporium of described rear body tube 9 is connected by the periphery wall of screw thread with front body tube 2, described rear body tube 9 front end internal perisporium offers the ring groove for installing automatic CD-ROM drive 13, described 7th lens 30, 8th lens 31, 9th lens 32, tenth lens 33 are fixedly installed in the front end nozzle of rear body tube 9 along light direction successively, described 3rd trim ring 10 is fixedly installed in rear body tube 9 leading section internal perisporium and plays position-limiting action to the front position of the 7th lens 30, described second mechanical spacer ring 11 be fixedly installed in rear body tube 9 front cylinder inwall and between the 7th lens 30 and the 8th lens 31 with limit both airspace, described 3rd mechanical spacer ring 12 be fixedly installed in rear body tube 9 front cylinder inwall and between the 8th lens 31 and the 9th lens 32 with limit both airspace, described rear body tube 9 internal perisporium is provided with the 3rd limited step for limiting the tenth lens 33 rear end face position in the position being positioned at the tenth lens 33 rear end face, described compensation lens barrel 15 is coaxially movably installed in the back cylinder of rear body tube 9, described 11 lens 34 are fixedly installed in the front end nozzle of compensation lens barrel 15, described compensation lens barrel 15 front end internal perisporium is provided with and carries out the 4th spacing limited step to the 11 lens 34 front position, described 12 lens 35, 13 lens 36, 14 lens 37, 15 lens 38 are fixedly installed in successively along light direction and compensate in lens barrel 15 cylindrical shell, described 4th mechanical spacer ring 16 be fixedly installed in compensate lens barrel 15 cylinder inboard wall and between the 12 lens the 35 and the 13 lens 36 with limit both airspace, described 5th mechanical spacer ring 17 be fixedly installed in compensate lens barrel 15 cylinder inboard wall and between the 13 lens the 36 and the 14 lens 37 with limit both airspace, described 4th trim ring 19 is fixedly installed in and compensates in the cylindrical shell of lens barrel 15 rear end and play position-limiting action to the back-end location of the 15 lens 38.
Described high definition varifocal monitoring camera camera lens also comprises the focal length setting mechanism be arranged on front body tube 2 and the Compensation Regulation mechanism be arranged on rear body tube 9;
Described focal length setting mechanism comprise movable sleeve be placed in the zoom handwheel 8 of front body tube 2 periphery wall and more than one be arranged at zoom handwheel 8, zoom guide pin 5 between front body tube 2 and zoom lens barrel 4, the barrel of described front body tube 2 is provided with quantity and position and in the past body tube 2 axis centered by the spiral groove one of spiral extension corresponding with zoom guide pin 5, described zoom handwheel 8 internal perisporium is provided with quantity and that along parallel zoom handwheel 8 axial direction arrange straight one corresponding with zoom guide pin 5 with position, one end of described zoom guide pin 5 is fixedly connected with zoom lens barrel 4, the other end also can do straight line slippage through stretching into after spiral groove one in corresponding straight one in the straight one of correspondence,
Described Compensation Regulation mechanism comprises movable sleeve and is placed in the compensation handwheel 23 of rear body tube 9 rear portion periphery wall and more than one and is arranged at and compensates handwheel 23, rear body tube 9 and the zoom guide pin 5 compensated between lens barrel 15, described rear body tube 9 is provided with quantity and position and later body tube 9 axis centered by the spiral groove two of spiral extension corresponding with zoom guide pin 5, as shown in Figure 3, described compensation handwheel 23 internal perisporium is provided with quantity and position and that along parallel compensation handwheel 23 axial direction arrange straight two corresponding with zoom guide pin 5, one end of described zoom guide pin 5 is fixedly connected with compensation lens barrel 15, the other end also can do straight line slippage through stretching into after spiral groove two in corresponding straight two in the straight two of correspondence.
Described rear body tube 9 periphery wall is provided with for dust-proof CD-ROM drive outer cover 14, described CD-ROM drive outer cover 14 is provided with annular through groove, described compensation handwheel 23 is fixedly connected with the rotational lock screw 22 for rotation compensation handwheel 23, the head end of described rotational lock screw 22 is placed on outside CD-ROM drive outer cover 14, the other end is fixedly connected with compensation handwheel 23 through annular through groove, and described CD-ROM drive outer cover 14 is provided with the CD-ROM drive upper cover 18 for drawing CD-ROM drive line.
Described rear body tube 9 exterior periphery is also provided with CS interface 20, and described CS interface 20 is outer is also provided with the 5th trim ring 21 be fixed it.
The present invention is applicable to the high definition varifocal monitoring camera camera lens of 4K video camera, and the technical indicator reached is as follows:
1, focal distance f: 11.8 ~ 40mm;
2, image planes size: 1/1.7inch (effective imaging surface n ' > φ 9.2mm);
3, relative aperture: full focal length section D/f '=1/1.4;
4, the super clear sharpness video camera of resolution: Quan Jiaoduan, all band and 4K (8,000,000) resolution is adaptive;
5, spectrum: 435nm ~ 900nm is suitable for;
6, optics overall length: ∑ L≤97mm;
7, TV distortion: full focal length section <2.5%.
Above-mentioned embodiment is just explained in detail technical scheme of the present invention, and the present invention has more than and is only confined to above-described embodiment, and every any improvement according to the principle of the invention or replacement, all should within protection scope of the present invention.
Claims (9)
1. one kind is applicable to the high definition varifocal monitoring camera camera lens of 4K video camera, comprise lens barrel, it is characterized in that: the variable diaphragm (E) of fixed mirror group (A) before being provided with positive light coke successively along light direction in described lens barrel, the zoom mirror group (B) of negative power, aperture, the middle fixed mirror group (C) of positive light coke and the compensating glass group (D) of positive light coke; Lens barrel is also provided with the automatic CD-ROM drive (13) for adjusting diaphragm (E) aperture, each group of optical element forming pick-up lens need meet the following conditions:
The short < 3.62 of D1+D2=C1,3.45 < C1/f ' C ... 1.
The short > 0.9 of D3+l '=C2, l '/f ' C ... 2.
TC=C3, C3 < 4f ' C is short ... 3.
The short < 1.86 of 1.78 < f ' change/f ' C ... 4.
Wherein, D1 is the airspace between front fixed mirror group and zoom mirror group, D2 is the airspace between zoom mirror group and diaphragm (E), D3 is the airspace between middle fixed mirror group and compensating glass group, l ' is the airspace between the last one side of compensating glass group and image planes (F), TC be design main spectral line when being c spectral line varifocal monitoring camera camera lens first eyeglass face to the distance of image planes (F), C1, C2, C3 is the fixed value set according to actual operation requirements, f ' C is short is the shortest focal length value of varifocal monitoring camera camera lens when main spectral line is c spectral line, f ' becomes the focal length of zoom mirror group.
2. the high definition varifocal monitoring camera camera lens being applicable to 4K video camera according to claim 1, it is characterized in that: described lens barrel comprises front body tube (2) and is connected to the rear body tube (9) of front body tube (2) rear end, described front fixed mirror group and zoom mirror group are installed in front body tube (2), and described diaphragm (E), middle fixed mirror group and compensating glass group are installed in rear body tube (9); Described automatic CD-ROM drive (13) is installed on rear body tube (9); The focal range of described front fixed mirror group is between 60mm ~ 70mm, the focal range of described zoom mirror group is between-20mm ~-28mm, the focal range of described middle fixed mirror group is between 45mm ~ 60mm, and the focal range of described compensating glass group is between 20mm ~ 35mm.
3. the high definition varifocal monitoring camera camera lens being applicable to 4K video camera according to claim 2, is characterized in that:
Described front fixed mirror group to be arranged in order along light direction by the first lens (24), the second lens (25), the 3rd lens (26) and to form, wherein the first lens (24) and the 3rd lens (26) are positive selenodont lens, second lens (25) are lenticular lens, and the gummed group of the first lens (24) and the second lens (25) composition contiguity;
Described zoom mirror group to be arranged in order along light direction by the 4th lens (27), the 5th lens (28), the 6th lens (29) and to form, wherein the 4th lens (27) and the 5th lens (28) are double concave type lens, 6th lens (29) are positive selenodont lens, and the gummed group of the 5th lens (28) and the 6th lens (29) composition contiguity;
Described middle fixed mirror group to be arranged in order along light direction by the 7th lens (30), the 8th lens (31), the 9th lens (32), the tenth lens (33) and to form, wherein the 7th lens (30) and the tenth lens (33) are negative selenodont lens, 8th lens (31) and the 9th lens (32) are lenticular lens, and the gummed group of the 9th lens (32) and the tenth lens (33) composition contiguity;
Described compensating glass group is by the 11 lens (34), 12 lens (35), 13 lens (36), 14 lens (37), 15 lens (38) are arranged in order composition along light direction, wherein the 11 lens (34) are positive selenodont lens, 12 lens (35), 13 lens (36) and the 14 lens (37) are lenticular lens, 15 lens (38) are double concave type lens, and the gummed group of the 11 lens (34) and the 12 lens (35) composition contiguity, the gummed group of the 14 lens (37) and the 15 lens (38) composition contiguity.
4. the high definition varifocal monitoring camera camera lens being applicable to 4K video camera according to claim 3, is characterized in that:
Each lens of described front fixed mirror group need meet following optical condition:
1.81<n1<1.95，33<v1<36.5；
1.44<n2<1.49，82<v2<90；
1.44<n3<1.49，82<v3<90；
Wherein n1-n3 is followed successively by the refractive index of the first lens (24)-three lens (26), and v1-v3 is followed successively by the Abbe number of the first lens (24)-three lens (26);
Each lens of described zoom mirror group need meet following optical condition:
1.46<n4<1.52，67<v4<73；
1.46<n5<1.52，67<v5<73；
1.7<n6<1.85，40<v6<47；
Wherein n4-n6 is followed successively by the refractive index of the 4th lens (27)-six lens (29), and v4-v6 is followed successively by the Abbe number of the 4th lens (27)-six lens (29);
Each lens of described middle fixed mirror group need meet following optical condition:
1.48<n7<1.52，60<v7<66；
1.44<n8<1.49，82<v8<90；
1.44<n9<1.49，82<v9<90；
1.81<n10<1.95，33<v10<36.5；
Wherein n7-n10 is followed successively by the refractive index of the 7th lens (30)-ten lens (33), and v7-v10 is followed successively by the Abbe number of the 7th lens (30)-ten lens (33);
Each lens of described compensating glass group need meet following optical condition:
1.75<n11<1.95，20<v11<26；
1.78<n12<1.95，20<v12<26；
1.65<n13<1.8，50<v13<60；
1.49<n14<1.55，70<v14<82；
1.8<n15<1.95，18<v15<28；
Wherein n11-n15 is followed successively by the refractive index of the 11 lens (34)-15 lens (38), and v11-v15 is followed successively by the Abbe number of the 7th lens (30)-ten lens (33).
5. the high definition varifocal monitoring camera camera lens being applicable to 4K video camera according to claim 4, is characterized in that:
Airspace between second lens (25) of described front fixed mirror group and the 3rd lens (26) is 0.1mm ~ 0.2mm;
Airspace between 3rd lens (26) of described front fixed mirror group and the 4th lens (27) of zoom mirror group is 1.5mm ~ 29mm;
Airspace between 4th lens (27) of described zoom mirror group and the 5th camera lens (28) is 4mm ~ 4.58mm;
6th lens (29) of described zoom mirror group and the airspace of diaphragm (E) are 2mm ~ 28mm;
The airspace of the 7th lens (30) of described diaphragm and middle fixed mirror group is 3.5mm ~ 4.5mm;
7th lens (30) of described middle fixed mirror group and the airspace of the 8th lens (31) are 0.1mm ~ 0.2mm;
Tenth lens (33) of described middle fixed mirror group are 8mm ~ 11mm with the airspace of the 11 lens (34) of compensating glass group;
12 lens (35) of described compensating glass group and the airspace of the 13 lens (36) are 0.2mm ~ 0.4mm;
13 lens (36) of described compensating glass group and the airspace of the 14 lens (37) are 0.1mm ~ 0.2mm.
6. the high definition varifocal monitoring camera camera lens being applicable to 4K video camera according to any one of claim 3-5, is characterized in that: described high definition varifocal monitoring camera camera lens also comprises the first trim ring (1), the second trim ring (7), the 3rd trim ring (10), the 4th trim ring (19), zoom lens barrel (4), compensates lens barrel (15), the first mechanical spacer ring (3), the second mechanical spacer ring (11), the 3rd mechanical spacer ring (12), the 4th mechanical spacer ring (16), the 5th mechanical spacer ring (17), described first lens (24) are fixedly installed in the front end nozzle of front body tube (2), and it is outer and play position-limiting action to the front position of the first lens (24) that described first trim ring (1) is fixedly installed in the front end nozzle of front body tube (2), described second lens (25), the 3rd lens (26) are fixedly installed in front body tube (2) front cylinder along light direction successively, described first mechanical spacer ring (3) be fixedly installed in front body tube (2) front cylinder inwall and be positioned between the second lens (25) and the 3rd lens (26) with limit both airspace, be also provided with the first limited step for spacing 3rd lens (26) back-end location in the front cylinder of described front body tube (2), described zoom lens barrel (4) is coaxially movably installed in the middle cylinder of front body tube (2), described 4th lens (27) are fixedly installed in the nozzle of zoom lens barrel (4) front end, described zoom lens barrel (4) leading section internal perisporium is provided with and carries out the second spacing limited step to the 4th lens (27) front end face, described 5th lens (28), 6th lens (29) are fixedly installed in zoom lens barrel (4) cylindrical shell along light direction successively, described second trim ring (7) to be fixedly installed in the cylindrical shell of zoom lens barrel (4) rear end and to play position-limiting action to the rear end of the 5th lens (28) and makes the front end face of the 5th lens (28) be close to the rear end face of the 4th lens (27) to ensure the airspace between the 4th lens (27) and the 5th lens (28), the internal perisporium of described rear body tube (9) is connected by the periphery wall of screw thread with front body tube (2), described rear body tube (9) front end internal perisporium offers the ring groove for installing automatic CD-ROM drive (13), described 7th lens (30), 8th lens (31), 9th lens (32), tenth lens (33) are fixedly installed in successively along light direction in the front end nozzle of rear body tube (9), described 3rd trim ring (10) is fixedly installed in rear body tube (9) leading section internal perisporium and plays position-limiting action to the front position of the 7th lens (30), described second mechanical spacer ring (11) is fixedly installed in the front cylinder inwall of rear body tube (9) and is positioned between the 7th lens (30) and the 8th lens (31) with the airspace of both restrictions, described 3rd mechanical spacer ring (12) is fixedly installed in the front cylinder inwall of rear body tube (9) and is positioned between the 8th lens (31) and the 9th lens (32) with the airspace of both restrictions, described rear body tube (9) internal perisporium is provided with the 3rd limited step for limiting the tenth lens (33) rear end face position in the position being positioned at the tenth lens (33) rear end face, described compensation lens barrel (15) is coaxially movably installed in the back cylinder of rear body tube (9), described 11 lens (34) are fixedly installed in the front end nozzle of compensation lens barrel (15), described compensation lens barrel (15) front end internal perisporium is provided with and carries out the 4th spacing limited step to the 11 lens (34) front position, described 12 lens (35), 13 lens (36), 14 lens (37), 15 lens (38) are fixedly installed in successively along light direction and compensate in lens barrel (15) cylindrical shell, described 4th mechanical spacer ring (16) is fixedly installed in and compensates lens barrel (15) cylinder inboard wall and be positioned between the 12 lens (35) and the 13 lens (36) with the airspace of both restrictions, described 5th mechanical spacer ring (17) is fixedly installed in and compensates lens barrel (15) cylinder inboard wall and be positioned between the 13 lens (36) and the 14 lens (37) with the airspace of both restrictions, described 4th trim ring (19) is fixedly installed in and compensates in the cylindrical shell of lens barrel (15) rear end and play position-limiting action to the back-end location of the 15 lens (38).
7. the high definition varifocal monitoring camera camera lens being applicable to 4K video camera according to claim 6, is characterized in that: described high definition varifocal monitoring camera camera lens also comprises the focal length setting mechanism be arranged on front body tube (2) and the Compensation Regulation mechanism be arranged on rear body tube (9);
Described focal length setting mechanism comprise movable sleeve be placed in the zoom handwheel (8) of front body tube (2) periphery wall and more than one be arranged at zoom handwheel (8), zoom guide pin (5) between front body tube (2) and zoom lens barrel (4), the barrel of described front body tube (2) is provided with quantity and position and in the past body tube (2) axis centered by the spiral groove one of spiral extension corresponding with zoom guide pin (5), described zoom handwheel (8) internal perisporium is provided with quantity and that along parallel zoom handwheel (8) axial direction arrange straight one corresponding with zoom guide pin (5) with position, one end of described zoom guide pin (5) is fixedly connected with zoom lens barrel (4), the other end also can do straight line slippage through stretching into after spiral groove one in corresponding straight one in the straight one of correspondence,
Described Compensation Regulation mechanism comprises movable sleeve and is placed in the compensation handwheel (23) of rear body tube (9) rear portion periphery wall and more than one and is arranged at and compensates handwheel (23), rear body tube (9) and the zoom guide pin (5) compensated between lens barrel (15), described rear body tube (9) is provided with quantity and position and later body tube (9) axis centered by the spiral groove two of spiral extension corresponding with zoom guide pin (5), described compensation handwheel (23) internal perisporium is provided with quantity and position and that along parallel compensation handwheel (23) axial direction arrange straight two corresponding with zoom guide pin (5), one end of described zoom guide pin (5) is fixedly connected with compensation lens barrel (15), the other end also can do straight line slippage through stretching into after spiral groove two in corresponding straight two in the straight two of correspondence.
8. the high definition varifocal monitoring camera camera lens being applicable to 4K video camera according to claim 7, it is characterized in that: described rear body tube (9) periphery wall is provided with for dust-proof CD-ROM drive outer cover (14), described CD-ROM drive outer cover (14) is provided with annular through groove, described compensation handwheel (23) is fixedly connected with the rotational lock screw (22) for rotation compensation handwheel (23), the head end of described rotational lock screw (22) is placed on CD-ROM drive outer cover (14) outward, the other end is fixedly connected with compensation handwheel (23) through annular through groove, described CD-ROM drive outer cover (14) is provided with the CD-ROM drive upper cover (18) for drawing CD-ROM drive line.
9. the high definition varifocal monitoring camera camera lens being applicable to 4K video camera according to any one of claim 3-5, it is characterized in that: described rear body tube (9) exterior periphery is also provided with CS interface (20), described CS interface (20) is also provided with the 5th trim ring (21) be fixed it outward.
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| CN201510175565.8A CN104777597B (en) | 2015-04-14 | 2015-04-14 | Suitable for the high definition varifocal monitoring camera camera lens of 4K video cameras |
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| CN201510175565.8A CN104777597B (en) | 2015-04-14 | 2015-04-14 | Suitable for the high definition varifocal monitoring camera camera lens of 4K video cameras |
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| CN106842527A (en) * | 2016-11-10 | 2017-06-13 | 嘉兴中润光学科技有限公司 | A kind of zoom lens |
| CN107167896A (en) * | 2017-05-27 | 2017-09-15 | 福鼎市雄光学仪器有限公司 | High definition underwater video pick-up lens |
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