CN103399393A - Four-component high-resolution pick-up lens with one-inch target surface - Google Patents
Four-component high-resolution pick-up lens with one-inch target surface Download PDFInfo
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- CN103399393A CN103399393A CN2013103553596A CN201310355359A CN103399393A CN 103399393 A CN103399393 A CN 103399393A CN 2013103553596 A CN2013103553596 A CN 2013103553596A CN 201310355359 A CN201310355359 A CN 201310355359A CN 103399393 A CN103399393 A CN 103399393A
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Abstract
The invention relates to a four-component high-resolution pick-up lens with a one-inch target surface. A front fixed component A, a zoom component B, an iris diaphragm C, a middle fixed component D and a compensation component E are arranged in the optical system of the pick-up lens in sequence in the left-to-right incidence direction of light; the front fixed component A is provided with a negative crescent lens A-1, a positive crescent lens A-2 and a positive crescent lens A-3 in sequence; the zoom component B is provided with a negative crescent lens B-1 and a first bonding component in sequence, wherein the first bonding component is formed by tightly bonding a biconcave lens B-2 and a positive crescent lens B-3; the middle fixed component D is provided with a biconvex lens D-1, a positive crescent lens D-2 and a biconcave lens D-3 in sequence; the compensation component E is provided with a biconvex lens E-1 and a second bonding component in sequence, wherein the second bonding component is formed by tightly bonding a biconvex lens E-2 and a biconcave lens E-3. The pick-up lens realizes broad spectrum focusing, has the advantages of high resolution, large relative aperture, large target surface, high zoom ratio, long focal length and the like and is suitable for remote monitoring.
Description
Technical field
The present invention relates to a kind of video camera lens device, particularly a kind of one inch target surface, four constituent element high resolving power pick-up lenss.
Background technology
The multipoint zoom lens of existing structure as far back as last century the nineties just be applied in video camera system, but its spectrophotometric data is low, zoom ratio is little; In light path, do not use Extra-low Dispersion glass, the resolution of camera lens is lower, can only with CCD or the cmos camera adaptation of 40 ~ 500,000 pixels; Wide spectral range is not carried out to chromatic aberration correction, therefore the spectral range that camera lens adapts to is narrow, can only under illumination condition, use in the daytime of 480nm ~ 650nm.
Face the ever-changing of safety monitoring product form and application scenarios, 1,000,000 high-definition monitoring camera lenses, under the complicated light environment of various scenes, all will have outstanding image quality.From the development over the years of mega pixel camera lens, can see, in higher pixel demand with under more the market demand of the lens wearer of high density transmittance constantly stimulates, the high definition mega pixel camera lens that is transitioned into gradually 2,000,000,3,000,000 and even 5,000,000 pixels from the mega pixel camera lens is irresistible.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, be that the technical problem to be solved in the present invention is to provide a kind of one inch target surface, four constituent element high resolving power pick-up lenss, it is wide that this camera lens adapts to spectral range, in the daytime can blur-free imaging by infrared light filling under illumination and night utmost point low-light (level) environmental baseline, realize that simultaneously the wide spectrum of infrared 850nm and visible light is confocal; The characteristics such as this camera lens reaches desirable optical index and the high resolving power of 5,000,000 pixels, meets the requirement of high definition pick-up, has simultaneously zoom ratio large, and focal length is long, be suitable for remote monitor, especially road monitoring.
in order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of one inch target surface, four constituent element high resolving power pick-up lenss, in the optical system of described camera lens along light from left to right incident direction be provided with successively front fixedly group A, zoom group B, iris C, middle fixing group D and compensation group E, described front fixedly group A is provided with negative selenodont lens A-1 successively, positive selenodont lens A-2 and positive selenodont lens A-3, the first gummed group that described zoom group B is provided with successively negative selenodont lens B-1 and is connected airtight by biconcave lens B-2 and positive selenodont lens B-3, described centre fixing group D is provided with biconvex lens D-1 successively, positive selenodont lens D-2 and biconcave lens D-3, the second gummed group that described compensation group E is provided with successively biconvex lens E-1 and is connected airtight by biconvex lens E-2 and biconcave lens E-3.
In further technical scheme, airspace between described front fixedly group A and zoom group B is 0.1mm ~ 7.58mm, airspace between described zoom group B and iris C is 31.79mm ~ 32.65mm, airspace between described iris C and middle fixing group D is 0.31mm ~ 0.45mm, and the airspace between described centre fixing group D and compensation group E is 8.1mm ~ 10.54mm.
In further technical scheme, the airspace between the negative selenodont lens A-1 in described front fixedly group A and positive selenodont lens A-2 is 2.69mm, and the airspace between described positive selenodont lens A-2 and positive selenodont lens A-3 is 0.1mm.
In further technical scheme, the negative selenodont lens B-1 in described zoom group B and the airspace between the first gummed group are 7.43mm.
In further technical scheme, the biconvex lens D-1 in the fixing group D of described centre and the airspace between positive selenodont lens D-2 are 0.1mm, and the airspace between described positive selenodont lens D-2 and biconcave lens D-3 is 0.39mm.
In further technical scheme, the biconvex lens E-1 in described compensation group E and the airspace between the second gummed group are 0.1mm.
Compared with prior art, the present invention has following beneficial effect: this camera lens have high resolving power (5,000,000 pixel), object lens of large relative aperture (1/1.4), large target surface (characteristics such as 1 "), high zoom ratio (5 times), focal length are long; the correspondence by zoom group and compensation group moves; can change easily the focal length of camera lens, thereby enlarges usable range; This camera lens is when light path design, by selecting the optical glass material of high index of refraction, low dispersion, by computer optics Computer Aided Design and optimization, make imaging resolution up to 5,000,000 pixels, thereby CCD and the cmos camera of ", 1 " high resolution day and night, be mainly used in the all-weather road of high definition, the Real Time Monitoring of communications and transportation monitoring applicable to 1/1.8.
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The accompanying drawing explanation
Fig. 1 is the optical system schematic diagram of the embodiment of the present invention.
Fig. 2 is the physical construction schematic diagram of the embodiment of the present invention.
in figure: 1-Jing Gai, 2-A sheet trim ring, arrangement of mirrors cylinder before 3-, the 4-BC spacer ring, 5-D sheet trim ring, 6-zoom arrangement of mirrors seat, the 7-front cam, the 8-body tube, the 9-outer cover, the 10-GH spacer ring, the 11-CD-ROM drive, the middle fixedly arrangement of mirrors seat of 12-(arrangement of mirrors cylinder namely), 13-I sheet trim ring, cam after 14-, the 15-Connection Block, 16-compensation arrangement of mirrors seat, 17-biconvex lens E-2, 18-biconcave lens E-3, the 19-JK spacer ring, 20-J sheet trim ring, locking nail after 21-, the positive selenodont lens of 22-B-3, 23-biconcave lens B-2, 24-bears selenodont lens B-1, the positive selenodont lens of 26-A-3, the positive selenodont lens of 28-A-2, 29-bears selenodont lens A-1, 30-biconvex lens D-1, the positive selenodont lens of 31-D-2, 32-biconcave lens D-3, 33-biconvex lens E-1, after 34-, organize Mobile base, 35-zoom guide pin, 36-compensates guide pin, locking nail before 37-, fixing group before A-, A-1-bears the selenodont lens, the positive selenodont lens of A-2-, the positive selenodont lens of A-3-, B-zoom group, B-1-bears the selenodont lens, the B-2-biconcave lens, the positive selenodont lens of B-3-, C-iris, fixing group in the middle of D-, D-1-biconvex lens, the positive selenodont lens of D-2-, the D-3-biconcave lens, E-compensation group, E-1-biconvex lens, the E-2-biconvex lens, E-3-biconcave lens, F-image planes.
Embodiment
as shown in Figure 1, a kind of one inch target surface, four constituent element high resolving power pick-up lenss, in the optical system of described camera lens along light from left to right incident direction be provided with successively front fixedly group A, zoom group B, iris C, middle fixing group D and compensation group E, described front fixedly group A is provided with negative selenodont lens A-1 successively, positive selenodont lens A-2 and positive selenodont lens A-3, the first gummed group that described zoom group B is provided with successively negative selenodont lens B-1 and is connected airtight by biconcave lens B-2 and positive selenodont lens B-3, described centre fixing group D is provided with biconvex lens D-1 successively, positive selenodont lens D-2 and biconcave lens D-3, the second gummed group that described compensation group E is provided with successively biconvex lens E-1 and is connected airtight by biconvex lens E-2 and biconcave lens E-3.
In the present embodiment, airspace between described front fixedly group A and zoom group B is 0.1mm ~ 7.58mm, airspace between described zoom group B and iris C is 31.79mm ~ 32.65mm, airspace between described iris C and middle fixing group D is 0.31mm ~ 0.45mm, and the airspace between described centre fixing group D and compensation group E is 8.1mm ~ 10.54mm.In order to improve optical property, all eyeglasses of this camera lens all adopt the optical material of high refraction, low dispersion, such as the H-FK61 optical material etc.
In the present embodiment, the airspace between the negative selenodont lens A-1 in described front fixedly group A and positive selenodont lens A-2 is 2.69mm, and the airspace between described positive selenodont lens A-2 and positive selenodont lens A-3 is 0.1mm.Negative selenodont lens B-1 in described zoom group B and the airspace between the first gummed group are 7.43mm.Biconvex lens D-1 in the fixing group D of described centre and the airspace between positive selenodont lens D-2 are 0.1mm, and the airspace between described positive selenodont lens D-2 and biconcave lens D-3 is 0.39mm.Biconvex lens E-1 in described compensation group E and the airspace between the second gummed group are 0.1mm.
In the present embodiment, the optical system that consists of above-mentioned lens set has reached following optical index: (1) focal length: f '=10mm ~ 50mm; (2) target surface size: 1 "; (3) zoom ratio: 5 times; (4) resolution: 100lp/mm, with the high-definition camera adaptation of 5,000,000 pixels; (5) relative aperture: D/F=1/1.7; (6) field angle: 2W=39.8 ° ~ 9.9 ° (effectively imaging surface m ' >=φ 11mm); (7) applicable spectral range: 480nm ~ 850nm; (8) optics rear cut-off distance; L ' >=7.35mm; (9) optical texture overall length :≤114.4mm.
Because the resolution of this camera lens is very high, zoom ratio is large, in the zoom process, require the resolution of visual field, edge and central market not make a big difference, so in structural design, will guarantee accurate, smooth not clamping stagnation and the good hand touch of the actions such as the concentricity of each constituent element of system and zoom, focusing.
As shown in Figure 2, Design of Mechanical Structure of the present invention comprises: fixedly microscope base 12, compensation arrangement of mirrors seat 16 fix the eyeglass of whole optical system to have designed front arrangement of mirrors cylinder 3, zoom arrangement of mirrors seat 6, middle groups.Because the resolution of this camera lens is higher, therefore it is more responsive to everyways such as airspace, hole axle cooperations, therefore in mechanical dimension, done strict control, the tolerance of the mechanical parts internal diameter that all and eyeglass directly coordinate all is placed between 0 ~ 0.02mm, thereby guarantees the precision of its cooperation.
In the present embodiment, in described front arrangement of mirrors cylinder 3, be placed with negative selenodont lens A-1, positive selenodont lens A-2 and positive tri-eyeglasses of selenodont lens A-3, between positive selenodont lens A-2 and positive selenodont lens A-3, designed BC spacer ring 4, spacer ring is done the delustring line out, eliminate the impact of parasitic light, to reduce halation; Negative selenodont lens A-1 has designed A sheet trim ring 2 in place, and whole arrangement of mirrors sheet is fixed.Described front arrangement of mirrors cylinder 3 is fixed on body tube 8 by three uniform countersunk heads nails, guarantees the concentricity of itself and whole light path.
In the present embodiment, negative selenodont lens B-1, biconcave lens B-2 and positive tri-two groups of formula eyeglasses of selenodont lens B-3 are installed on described zoom arrangement of mirrors seat 6, and negative selenodont lens B-1 and biconcave lens B-2 directly guarantee its airspace by the eyeglass surface of contact; Design D sheet trim ring 5 by the fixing of whole arrangement of mirrors sheet, guaranteed the Assembly stability of whole arrangement of mirrors sheet.
In the present embodiment, described centre fixedly arrangement of mirrors seat 12 is equipped with biconvex lens D-1, positive selenodont lens D-2 and tri-eyeglasses of biconcave lens D-3, has designed logical light and airspace that GH spacer ring 10 guarantees biconvex lens D-1 and positive selenodont lens D-2; And the interval between positive selenodont lens D-2 and biconcave lens D-3 is directly guaranteed by face by eyeglass, and its precision is higher; Designed the whole arrangement of mirrors sheet of fixing group D in the middle of I sheet trim ring 13 fixes.
In the present embodiment, described compensation arrangement of mirrors seat 16 is equipped with biconvex lens E-1, biconvex lens E-2 and tri-two groups of formula eyeglasses of biconcave lens E-3, design JK spacer ring 19 and guaranteed logical light and the airspace between biconvex lens E-1 and biconvex lens E-2, designed J sheet trim ring 20 and compensation is organized to the whole arrangement of mirrors sheet of E fixed, its eyeglass when mobile can not become flexible or come off; Compensation arrangement of mirrors seat 16 coordinates with rear group of Mobile base 34 by screw thread, rear group of Mobile base 34 again with centre fixedly arrangement of mirrors seat 12 coordinate, thereby guarantee the right alignment of whole light path, make image quality better.
For realizing manual zoom, the focusing of camera lens, namely by zoom group B and compensation group E, at axial location, move to realize, amount of movement by body tube 8 and middle groups fixedly the spiral fluted helical pitch on microscope base 12 control.Design zoom guide pin 35 is fixed on zoom arrangement of mirrors seat 6, and arrive on the draw-in groove of front cam 7 by the helicla flute of body tube 8, mobile front cam 7 drove zoom guide pin 35 by the notch by front cam 7 and moved along the helicla flute of body tube 8 this moment, thereby made the mobile in the axial direction purpose that reaches zoom of zoom arrangement of mirrors seat 6; In like manner design compensation guide pin 36 is fixed on rear group of Mobile base 34, rear group of Mobile base 34 is fixed by screw thread and compensation arrangement of mirrors seat 16, namely compensating guide pin 36 is fixed on compensation arrangement of mirrors seat 16 indirectly, and compensation guide pin 36 by middle groups fixedly the helicla flute on microscope base 12 to the draw-in groove of rear cam 14, after this moment is mobile cam 14 by notch drives compensation guide pin 36 along middle groups fixedly the helicla flute of microscope base 12 move, thereby make to compensate arrangement of mirrors seat 16, move in the axial direction the purpose that reaches focusing.For rotate or the vibrations process in do not run burnt situation, at copper zoom guide pin 35 and compensation guide pin 36, adopt threaded engagement, and at zoom guide pin 35 and compensation guide pin 36 tops, put respectively nylon jacket and increase friction force.
For prevent the focal length of having confirmed gamma camera move or the vibrations process in moving to cam, cause focal length variations, design front locking nail 37, rear locking nail 21 is locked.In order to alleviate the weight of camera lens, design zoom arrangement of mirrors seat 6 and middle groups are fixedly during microscope base 12, under the prerequisite that does not affect structure, by unnecessary part deduction, the use of minimizing material.Lens construction of the present invention is compact, eurythmy, has guaranteed stability and the aesthetic property of product; Dimensional requirement between coordinating by each eyeglass of strict control, can realize that focusing and zoom are accurate reliably, feel is good.
The present invention, by optical system optimization, makes camera lens reach 1 " large target surface, can be with 1/1.8 the video camera of ", 1 " target surface suitable; By changing change and the roll adjustment of interval to realize lens focus between zoom group and iris, the corresponding interval that changes between compensation group and iris resembles the stable of face to realize the zoom process; Optical glass material (as the H-FK61 optical material) by reasonable selection high index of refraction, low dispersion, use area of computer aided optical design and optimization, the various aberrations of optical lens have been proofreaied and correct perfectly, make the resolution of camera lens up to 5,000,000 pixels, can adapt to the requirement of high definition video shooting.
The present invention when Design of Mechanical Structure, both guaranteed camera lens concentricity, precision and axial location accurately, the smoothly clamping stagnation not of accomplishing again that zoom moves, comfortable feel; In order better to guarantee the image quality of camera lens, process and all strictly according to the requirement of optical designers, carry out blocking light; Simultaneously in order to eliminate the parasitic light of camera lens, and do the delustring line at the inwall of BC spacer ring, thereby eliminated the halation problem; The C interface structural design guarantees that camera lens can meet the use of C, CS video camera simultaneously.
The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (6)
1. one inch target surface, four constituent element high resolving power pick-up lenss, it is characterized in that: in the optical system of described camera lens along light from left to right incident direction be provided with successively front fixedly group A, zoom group B, iris C, middle fixing group D and compensation group E, described front fixedly group A is provided with negative selenodont lens A-1 successively, positive selenodont lens A-2 and positive selenodont lens A-3, the first gummed group that described zoom group B is provided with successively negative selenodont lens B-1 and is connected airtight by biconcave lens B-2 and positive selenodont lens B-3, described centre fixing group D is provided with biconvex lens D-1 successively, positive selenodont lens D-2 and biconcave lens D-3, the second gummed group that described compensation group E is provided with successively biconvex lens E-1 and is connected airtight by biconvex lens E-2 and biconcave lens E-3.
2. one inch target surface, four constituent element high resolving power pick-up lenss according to claim 1, it is characterized in that: the airspace between described front fixedly group A and zoom group B is 0.1mm ~ 7.58mm, airspace between described zoom group B and iris C is 31.79mm ~ 32.65mm, airspace between described iris C and middle fixing group D is 0.31mm ~ 0.45mm, and the airspace between described centre fixing group D and compensation group E is 8.1mm ~ 10.54mm.
3. one inch target surface, four constituent element high resolving power pick-up lenss according to claim 1 and 2, it is characterized in that: the airspace between the negative selenodont lens A-1 in described front fixedly group A and positive selenodont lens A-2 is 2.69mm, and the airspace between described positive selenodont lens A-2 and positive selenodont lens A-3 is 0.1mm.
4. one inch target surface, four constituent element high resolving power pick-up lenss according to claim 1 and 2, it is characterized in that: the negative selenodont lens B-1 in described zoom group B and the airspace between the first gummed group are 7.43mm.
5. one inch target surface, four constituent element high resolving power pick-up lenss according to claim 1 and 2, it is characterized in that: the biconvex lens D-1 in the fixing group D of described centre and the airspace between positive selenodont lens D-2 are 0.1mm, and the airspace between described positive selenodont lens D-2 and biconcave lens D-3 is 0.39mm.
6. one inch target surface, four constituent element high resolving power pick-up lenss according to claim 1 and 2, it is characterized in that: the biconvex lens E-1 in described compensation group E and the airspace between the second gummed group are 0.1mm.
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Cited By (2)
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| CN106443980A (en) * | 2016-12-16 | 2017-02-22 | 福建福光股份有限公司 | Compact wide-angle high-resolution space target detection lens device |
| CN115166956A (en) * | 2022-07-05 | 2022-10-11 | 福建优恩立光电科技有限公司 | Zooming industrial lens for machine vision imaging |
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| CN115166956B (en) * | 2022-07-05 | 2023-08-01 | 福建优恩立光电科技有限公司 | Zoom industrial lens for machine vision imaging |
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