CN103399393B - One inch of target surface four constituent element high resolving power pick-up lens - Google Patents
One inch of target surface four constituent element high resolving power pick-up lens Download PDFInfo
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- CN103399393B CN103399393B CN201310355359.6A CN201310355359A CN103399393B CN 103399393 B CN103399393 B CN 103399393B CN 201310355359 A CN201310355359 A CN 201310355359A CN 103399393 B CN103399393 B CN 103399393B
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Abstract
The present invention relates to a kind of one inch of target surface four constituent element high resolving power pick-up lens, along light incident direction fixing group A before being provided with successively from left to right in the optical system of described camera lens, zoom group B, iris C, middle fixing group D and compensating group E, before described, fixing 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 negative selenodont lens B-1 successively and is touched 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 compensating group E is provided with biconvex lens E-1 successively and is touched by biconvex lens E-2 and biconcave lens E-3.It is confocal that this camera lens realizes wide spectral, advantage, the applicable remote monitor such as have high resolving power, object lens of large relative aperture, large target surface, zoom ratio is large, focal length is long.
Description
Technical field
The present invention relates to a kind of video camera lens device, particularly a kind of one inch of target surface four constituent element high resolving power pick-up lens.
Background technology
The multipoint zoom lens of existing structure as far back as last century the nineties be just applied in video camera system, but its spectrophotometric data is low, zoom ratio is little; Do not use Extra-low Dispersion glass in the optical path, the resolution of camera lens is lower, can only with the CCD of 40 ~ 500,000 pixels or cmos camera adaptive; Chromatic aberration correction is not carried out to wide spectral range, therefore the spectral range that camera lens adapts to is narrow, can only use in the daytime of 480nm ~ 650nm under illumination condition.
Ever-changing in the face of safety monitoring product form and application scenarios, 1,000,000 high-definition monitoring camera lenses, under the complicated light environment of various scene, all will have outstanding image quality.Can see from the development over the years of mega pixel camera lens, under the market demand of higher pixel demand and the more lens wearer of high density transmittance constantly stimulates, the high definition mega pixel camera lens being transitioned into 2,000,000,3,000,000 and even 5,000,000 pixels from mega pixel camera lens is gradually irresistible.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, namely the technical problem to be solved in the present invention is to provide a kind of one inch of target surface four constituent element high resolving power pick-up lens, 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 pole low-light (level) environmental baseline, the wide spectral simultaneously realizing infrared 850nm and visible ray is confocal; The features such as this camera lens reaches the high resolving power of desirable optical index and 5,000,000 pixels, meets the requirement of high definition pick-up, has zoom ratio large simultaneously, and focal length is long, are applicable to 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 of target surface four constituent element high resolving power pick-up lens, along light incident direction fixing group A before being provided with successively from left to right in the optical system of described camera lens, zoom group B, iris C, middle fixing group D and compensating group E, before described, fixing 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 negative selenodont lens B-1 successively and is touched 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 compensating group E is provided with biconvex lens E-1 successively and is touched by biconvex lens E-2 and biconcave lens E-3.
In further technical scheme, airspace before described between fixing 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, the airspace that described iris C and centre are fixed between group D is 0.31mm ~ 0.45mm, and the airspace that described centre is fixed between group D and compensating group E is 8.1mm ~ 10.54mm.
In further technical scheme, the airspace between the negative selenodont lens A-1 before described in fixing 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 group D is fixed in described centre and the airspace just between selenodont lens D-2 is 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 compensating 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 (feature such as 1 "), high zoom ratio (5 times), focal length are long; moved by the correspondence of zoom group and compensating group; the focal length of camera lens can be changed easily, thus expand 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, thus the CCD of ", the 1 " high resolution day and night that is applicable to 1/1.8 and cmos camera, be mainly used in the real-time monitoring of the all-weather road of high definition, communications and transportation monitoring.
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
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-, 4-BC spacer ring, 5-D sheet trim ring, 6-zoom arrangement of mirrors seat, 7-front cam, 8-body tube, 9-outer cover, 10-GH spacer ring, 11-CD-ROM drive, fixing arrangement of mirrors seat (namely arrangement of mirrors cylinder) in the middle of 12-, 13-I sheet trim ring, cam after 14-, 15-Connection Block, 16-compensating group microscope base, 17-biconvex lens E-2, 18-biconcave lens E-3, 19-JK spacer ring, 20-J sheet trim ring, locking nail after 21-, 22-positive selenodont lens B-3, 23-biconcave lens B-2, 24-bears selenodont lens B-1, 26-positive selenodont lens A-3, 28-positive selenodont lens A-2, 29-bears selenodont lens A-1, 30-biconvex lens D-1, 31-positive selenodont lens D-2, 32-biconcave lens D-3, 33-biconvex lens E-1, Mobile base is organized after 34-, 35-zoom guide pin, 36-compensates guide pin, locking nail before 37-, fixing group before A-, A-1-bears selenodont lens, the positive selenodont lens of A-2-, the positive selenodont lens of A-3-, B-zoom group, B-1-bears selenodont lens, 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-, D-3-biconcave lens, E-compensating group, E-1-biconvex lens, E-2-biconvex lens, E-3-biconcave lens, F-image planes.
Embodiment
As shown in Figure 1, a kind of one inch of target surface four constituent element high resolving power pick-up lens, along light incident direction fixing group A before being provided with successively from left to right in the optical system of described camera lens, zoom group B, iris C, middle fixing group D and compensating group E, before described, fixing 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 negative selenodont lens B-1 successively and is touched 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 compensating group E is provided with biconvex lens E-1 successively and is touched by biconvex lens E-2 and biconcave lens E-3.
In the present embodiment, airspace before described between fixing 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, the airspace that described iris C and centre are fixed between group D is 0.31mm ~ 0.45mm, and the airspace that described centre is fixed between group D and compensating 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 H-FK61 optical material etc.
In the present embodiment, the airspace between the negative selenodont lens A-1 before described in fixing 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.The biconvex lens D-1 in group D is fixed in described centre and the airspace just between selenodont lens D-2 is 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 compensating group E and the airspace between the second gummed group are 0.1mm.
In the present embodiment, the optical system be made up of above-mentioned lens set reaches following optical index: (1) focal length: f '=10mm ~ 50mm; (2) target surface size: 1 "; (3) zoom ratio: 5 times; (4) resolution: 100lp/mm, adaptive with the high-definition camera of 5,000,000 pixels; (5) relative aperture: D/F=1/1.7; (6) field angle: 2W=39.8 ° ~ 9.9 ° (effective imaging surface m ' >=φ 11mm); (7) spectral range: 480nm ~ 850nm is suitable for; (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 zooming procedure, require that the resolution of peripheral field and central market does not make a big difference, so the concentricity of each constituent element of system and accurate, the smooth not clamping stagnation of the action such as zoom, focusing and good hand touch will be guaranteed in structural design.
As shown in Figure 2, Design of Mechanical Structure of the present invention comprises: devise front arrangement of mirrors cylinder 3, zoom arrangement of mirrors seat 6, middle groups fixes microscope base 12, compensating group microscope base 16 fixes whole optical system eyeglass.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 all mechanical parts internal diameters directly coordinated with eyeglass is all placed between 0 ~ 0.02mm, thus ensures its precision coordinated.
In the present embodiment, negative selenodont lens A-1, positive selenodont lens A-2 and positive selenodont lens A-3 tri-eyeglasses are placed with in described front arrangement of mirrors cylinder 3, BC spacer ring 4 is devised between positive selenodont lens A-2 and positive selenodont lens A-3, spacer ring does delustring line out, eliminate the impact of parasitic light, to reduce halation; Negative selenodont lens A-1 place devises A sheet trim ring 2, is fixed by whole arrangement of mirrors sheet.Described front arrangement of mirrors cylinder 3 is fixed on body tube 8 by three uniform countersunk head nails, ensures the concentricity of itself and whole light path.
In the present embodiment, described zoom arrangement of mirrors seat 6 is provided with negative selenodont lens B-1, biconcave lens B-2 and positive selenodont lens B-3 tri-two groups of formula eyeglasses, negative selenodont lens B-1 and biconcave lens B-2 directly ensures its airspace by lens contacts face; Devise D sheet trim ring 5 fixing whole arrangement of mirrors sheet, ensure the Assembly stability of whole arrangement of mirrors sheet.
In the present embodiment, described centre is fixed arrangement of mirrors seat 12 and is provided with biconvex lens D-1, positive selenodont lens D-2 and biconcave lens D-3 tri-eyeglasses, devises GH spacer ring 10 to ensure logical light and the airspace of biconvex lens D-1 and positive selenodont lens D-2; And positive interval between selenodont lens D-2 and biconcave lens D-3 is directly ensured by face by eyeglass, its precision is higher; Devise the whole arrangement of mirrors sheet that I sheet trim ring 13 fixes middle fixing group D.
In the present embodiment, described compensating group microscope base 16 is provided with biconvex lens E-1, biconvex lens E-2 and biconcave lens E-3 tri-two groups of formula eyeglasses, devise JK spacer ring 19 to ensure logical light between biconvex lens E-1 and biconvex lens E-2 and airspace, devise J sheet trim ring 20 whole for compensating group E arrangement of mirrors sheet is fixed, its eyeglass when mobile can not be loosened or come off; Compensating group microscope base 16 is coordinated with rear group of Mobile base 34 by screw thread, and rear group of Mobile base 34 is fixed arrangement of mirrors seat 12 again and coordinated with centre, thus ensures the right alignment of whole light path, makes image quality better.
For realizing manual zoom, the focusing of camera lens, namely to be moved at axial location by zoom group B and compensating group E and realize, the spiral fluted helical pitch that amount of movement is fixed on microscope base 12 by body tube 8 and middle groups controls.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, now moving front cam 7 drives zoom guide pin 35 to move along the helicla flute of body tube 8 by by the notch of front cam 7, thus make zoom arrangement of mirrors seat 6 in the axial direction movement reach the object of zoom; In like manner design compensation guide pin 36 is fixed on rear group of Mobile base 34, rear group of Mobile base 34 coordinates fixing by screw thread with compensating group microscope base 16, namely compensating guide pin 36 is fixed on compensating group microscope base 16 indirectly, and compensation guide pin 36 fixes the helicla flute on microscope base 12 on the draw-in groove of rear cam 14 by middle groups, after now mobile, cam 14 is driven by notch and compensates the helicla flute that guide pin 36 fixes microscope base 12 along middle groups and move, thus make compensating group microscope base 16 in the axial direction movement reach the object of focusing.In order to not run burnt situation in rotation or vibrations process, adopt threaded engagement at copper zoom guide pin 35 and compensation guide pin 36, and overlap nylon jacket respectively to increase friction force at zoom guide pin 35 and compensation guide pin 36 top.
In order to prevent the focal length confirmed from moving at gamma camera or moving cam in vibrations process and cause focal length variations, designing front locking nail 37, rear locking nail 21 locks.In order to alleviate the weight of camera lens, when design zoom arrangement of mirrors seat 6 and middle groups fix microscope base 12, under the prerequisite not affecting structure, unnecessary part being deducted, reducing the use of material.Lens construction of the present invention is compact, eurythmy, ensure that stability and the aesthetic property of product; By strictly control each eyeglass coordinate between dimensional requirement, focusing can be realized and zoom is accurate reliably, feel is good.
The present invention is optimized by optical system, makes camera lens reach 1 " large target surface, can with 1/1.8 the video camera of ", 1 " target surface suitable; By the interval between change zoom group and iris to realize change and the roll adjustment of lens focus, the corresponding interval changed between compensating group and iris resembles the stable of face to realize zooming procedure; By the optical glass material (as H-FK61 optical material) of reasonable selection high index of refraction, low dispersion, use area of computer aided optical design and optimization, correct the various aberrations of optical lens perfectly, make the resolution of camera lens up to 5,000,000 pixels, the requirement of high definition video shooting can be adapted to.
The present invention, when Design of Mechanical Structure, had both ensured the accurate of the concentricity of camera lens, precision and axial location, accomplished again the level and smooth not clamping stagnation of zoom movement, comfortable feel; In order to better ensure the image quality of camera lens, carry out blocking the requirement all strictly according to optical designers in light process; Simultaneously in order to eliminate the parasitic light of camera lens, and do delustring line at the inwall of BC spacer ring, thus eliminate halo problem; C interface structural design ensures 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 done 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 (1)
1. one kind one inch target surface four constituent element high resolving power pick-up lens, it is characterized in that: along light incident direction fixing group A before being provided with successively from left to right in the optical system of described camera lens, zoom group B, iris C, middle fixing group D and compensating group E, before described, fixing 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 negative selenodont lens B-1 successively and is touched 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 compensating group E is provided with biconvex lens E-1 successively and is touched by biconvex lens E-2 and biconcave lens E-3, airspace before described between fixing 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, the airspace that described iris C and centre are fixed between group D is 0.31mm ~ 0.45mm, and the airspace that described centre is fixed between group D and compensating group E is 8.1mm ~ 10.54mm, airspace between negative selenodont lens A-1 before described in fixing 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, the biconvex lens D-1 in group D is fixed in described centre and the airspace just between selenodont lens D-2 is 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 compensating group E and the airspace between the second gummed group are 0.1mm.
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CN106443980B (en) * | 2016-12-16 | 2018-10-02 | 福建福光股份有限公司 | Compact wide-angle high-resolution space target detection lens |
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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US6721105B2 (en) * | 2001-12-12 | 2004-04-13 | Nikon Corporation | Zoom lens system |
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JP4259689B2 (en) * | 1999-08-23 | 2009-04-30 | 株式会社リコー | Zoom lens |
JP4383758B2 (en) * | 2003-03-03 | 2009-12-16 | キヤノン株式会社 | Teleconverter |
JP2005043788A (en) * | 2003-07-25 | 2005-02-17 | Olympus Corp | Rear conversion lens |
CN102043238A (en) * | 2010-11-12 | 2011-05-04 | 福建福光数码科技有限公司 | Four-element high-resolution day-and-night dual-purpose multipoint varifocal lens |
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