CN102608732A - Large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens - Google Patents
Large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens Download PDFInfo
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- CN102608732A CN102608732A CN2011104351380A CN201110435138A CN102608732A CN 102608732 A CN102608732 A CN 102608732A CN 2011104351380 A CN2011104351380 A CN 2011104351380A CN 201110435138 A CN201110435138 A CN 201110435138A CN 102608732 A CN102608732 A CN 102608732A
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Abstract
The invention relates to a large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens. A front fixing group, a zooming group, a compensating group, a variable diaphragm assembly and a rear fixing group are respectively arranged along the left-to-right incidence direction of light rays, the focal power of the front fixing group is positive, the focal power of the zooming group is negative, the focal power of the compensating group is negative, and the focal power of the rear fixing group is positive; the front fixing group is provided with a first adhering group, a positive crescent-moon lens and another positive crescent-moon lens sequentially, and the adhering group is formed by closely connecting a negative crescent-moon lens and a double-convex lens; the zooming group is provided with a negative crescent-moon lens and a second adhering group sequentially, and the adhering group is formed by closely connecting a double-concave lens and a double-convex lens; the compensating group is provided with a third adhering group formed by closely connecting a double-concave lens and a double-convex lens; and the front part of the rear fixing group is provided with a plano-convex lens and a double-convex lens sequentially, the middle part of the rear fixing group is provided with a fourth adhering group and a positive crescent-moon lens sequentially, the adhering group is formed by closely connecting a double-convex lens and a double-concave lens, and the rear part of the rear fixing group is provided with a fifth adhering group formed by closely connecting a negative crescent-moon lens and a double-convex lens. The large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens disclosed by the invention has the advantages of large view field, high variable rate and high resolution, and can match a high-precision camera and the like.
Description
Technical field
The present invention relates to the optical pick-up apparatus of video technique, the airborne Varifocal pick-up lens of the big multiple proportions of particularly a kind of large visual field high resolution.
Background technology
Mechanical compensation formula zoom lens have had the history of many decades in the application in video camera field, and doubly group, compensation group and four constituent elements of back fixation group constitute the traditional optical system form by preceding fixation group, change; But their ubiquities, and volume is big, the observation visual field is less, become that multiple proportions is little, resolution is not high, can not with shortcomings such as high-precision video camera is adaptive.
Summary of the invention
Deficiency in view of prior art the object of the present invention is to provide the airborne Varifocal pick-up lens of the big multiple proportions of a kind of large visual field high resolution; This camera lens has overcome and uses zoom lens's resolution of many decades can't be adaptive with high-definition camera; And be subject to weight and volume; Cause observing the visual field less, become that multiple proportions is little, picture contrast, sharpness be not high, has a strong impact on the defectives such as detectivity of system.
To achieve these goals; Technical scheme of the present invention is: the airborne Varifocal pick-up lens of the big multiple proportions of a kind of large visual field high resolution; Comprise focus adjusting mechanism and zoom mechanism, it is characterized in that: in the optical system of said camera lens along light from left to right incident direction to be respectively equipped with focal power be that positive preceding fixation group A, focal power are for B is doubly organized in negative change, focal power is positive back fixation group E for compensation group C, iris assembly D and the focal power of bearing; Fixation group A is provided with the first gummed group of being connected airtight by negative crescent moon lens A-1 and biconvex lens A-2, positive crescent moon lens A-3 and positive crescent moon lens A-4 successively before said; The second gummed group that B is provided with negative crescent moon lens B-1 successively and is connected airtight by biconcave lens B-2 and biconvex lens B-3 is doubly organized in said change; Said compensation group C is provided with the 3rd gummed group of being connected airtight by biconcave lens C-1 and plano-convex lens C-2; The front portion of said back fixation group E is provided with plano-convex lens E-1 and biconvex lens E-2 successively; The middle part is provided with the 4th gummed group and the positive crescent moon lens E-5 that is connected airtight by biconvex lens E-3 and biconcave lens E-4 successively, and the rear portion is provided with the 5th gummed group of being connected airtight by negative crescent moon lens E-6 and biconvex lens E-7.
Further, fixation group A and to become the airspace of doubly organizing between the B be 0.9mm～31.45mm before said; The airspace that said change is doubly organized between B and the compensation group C is 29.81mm～5.21mm; Airspace between compensation group C and the back fixation group E is 9.97mm～2.47mm; Airspace between first gummed group before said among the fixation group A and the positive crescent moon lens A-3 is 0.1mm, and the airspace between said positive crescent moon lens A-3 and the positive crescent moon lens A-4 is 0.1mm; Negative crescent moon lens B-1 and the airspace between the second gummed group that said change is doubly organized among the B are 3.55mm; Plano-convex lens E-1 among the said back fixation group E and the airspace between the biconvex lens E-2 are 0.1mm; Airspace between said biconvex lens E-2 and the 4th gummed group is 0.1mm; Airspace between said the 4th gummed group and the positive crescent moon lens E-5 is 0.2mm, and the airspace between said positive crescent moon lens E-5 and the 5th gummed group is 5.95mm.
Further, the positive crescent moon lens A-4 before said among the fixation group A is that the H-FK61 material by ED forms.
Further, the optical system of said camera lens has following optical index: (1) focal length: short burnt f '≤5.8mm; Long burnt f '=100mm ± 1% becomes multiple proportions greater than 17.2 times; (2) relative aperture: D/f ' is greater than 1/4.5; (3) field angle: 2w=54.8 °～3.4 °; (4) full-size: be not more than 200mm * 136mm * 70mm; (5) weight :≤1.2Kg; (6) resolution of lens: adaptive with mega pixel ccd video camera or cmos camera.
Compared with prior art; The present invention has the following advantages: (1) this camera lens has been simplified the structure of optical system to reach hypermutation multiple proportions, advantages of small volume as far as possible; And make multiple proportions m2=-1 place that doubly organizes B becoming, the multiple proportions │ m3 │ of compensation group C press the motion of steepest zoom route, and then make that the helical pitch of zoom process is minimum; The optics length overall is the shortest, makes the advantages of small volume of total system.(2) optical system of this camera lens has functions such as electronic continuous vari-focus, electronic focusing, electronic light modulation, focal length feedback; It can the environment of good weather down for mega pixel 1/3 " CCD or cmos camera provide photosignal; produce the video image of high definition; under comparable size and weight condition, it has bigger observation visual field, higher resolution, bigger change multiple proportions than ordinary optical camera lens, and are applicable to the airborne circumstance condition of complicacy.(3) through in preceding fixation group A, selecting the positive crescent moon lens A-4 that processes by the H-FK61 optical material of ED for use; Not only improved the focal power ability to take the burden of the highest preceding fixation group A of light height; And aberrations such as optical lens second order spectrum have been reduced effectively; The resolution of camera lens is significantly improved, reach mega pixel, can be adaptive with the video camera of high definition.
Description of drawings
Fig. 1 is the organigram of embodiment of the invention optical system.
Fig. 2 is the organigram of the embodiment of the invention.
Fig. 3 looks synoptic diagram for the right side of Fig. 2.
Fig. 4 is the organigram of embodiment of the invention focus adjusting mechanism.
Fig. 5 is the organigram of embodiment of the invention zoom mechanism.
Among the figure: fixation group before the A-, B-becomes doubly group, C-compensation group, D-iris assembly, fixation group behind the E-, A-1, B-1, the negative crescent moon lens of E-6-; A-2, B-3, E-2, E-3, E-7-biconvex lens, A-3, A-4, the positive crescent moon lens of E-5-, B-2, C-1, E-4-biconcave lens, C-2, E-1-plano-convex lens, F-optics target surface, G-optical axis; The 1-screw, the 2-cam cover, accurate steel balls before the 3-body tube, 4-, 5-third wheel, 6-become doubly seat; 7-becomes times guide pin, and 8-becomes times guide pin bushing, the 9-guide rod, and the 10-cam, 11-becomes times electric machine assembly, 12-precision resistor; 13-compensates guide pin bushing, and 14-compensates guide pin, and 15-compensates seat, accurate steel balls behind the 16-, the collar of 17-cam lock, 18-focusing ring; Arrangement of mirrors tube clamp ring before the 19-, arrangement of mirrors seat before the 20-, the 21-electric machine assembly of focus, the 22-guide pin of focusing, the preceding arrangement of mirrors tube of 23-, 24-light hurdle electric machine assembly.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further elaboration.
With reference to figure 1; The airborne Varifocal pick-up lens of the big multiple proportions of a kind of large visual field high resolution; Comprise focus adjusting mechanism and zoom mechanism, it is characterized in that: in the optical system of said camera lens along light from left to right incident direction to be respectively equipped with focal power be that positive preceding fixation group A, focal power are for B is doubly organized in negative change, focal power is positive back fixation group E for compensation group C, iris assembly D and the focal power of bearing; Fixation group A is provided with the first gummed group of being connected airtight by negative crescent moon lens A-1 and biconvex lens A-2, positive crescent moon lens A-3 and positive crescent moon lens A-4 successively before said; The second gummed group that B is provided with negative crescent moon lens B-1 successively and is connected airtight by biconcave lens B-2 and biconvex lens B-3 is doubly organized in said change; Said compensation group C is provided with the 3rd gummed group of being connected airtight by biconcave lens C-1 and plano-convex lens C-2; The front portion of said back fixation group E is provided with plano-convex lens E-1 and biconvex lens E-2 successively; The middle part is provided with the 4th gummed group and the positive crescent moon lens E-5 that is connected airtight by biconvex lens E-3 and biconcave lens E-4 successively, and the rear portion is provided with the 5th gummed group of being connected airtight by negative crescent moon lens E-6 and biconvex lens E-7.
In the present embodiment, fixation group A and to become the airspace of doubly organizing between the B be 0.9mm～31.45mm before said; The airspace that said change is doubly organized between B and the compensation group C is 29.81mm～5.21mm; Airspace between compensation group C and the back fixation group E is 9.97mm～2.47mm.Airspace between first gummed group before said among the fixation group A and the positive crescent moon lens A-3 is 0.1mm, and the airspace between said positive crescent moon lens A-3 and the positive crescent moon lens A-4 is 0.1mm.Negative crescent moon lens B-1 and the airspace between the second gummed group that said change is doubly organized among the B are 3.55mm.Plano-convex lens E-1 among the said back fixation group E and the airspace between the biconvex lens E-2 are 0.1mm; Airspace between said biconvex lens E-2 and the 4th gummed group is 0.1mm; Airspace between said the 4th gummed group and the positive crescent moon lens E-5 is 0.2mm, and the airspace between said positive crescent moon lens E-5 and the 5th gummed group is 5.95mm.
For pursuing higher resolution; When optical design, through in preceding fixation group A, selecting the positive crescent moon lens A-4 that processes by the H-FK61 optical material of ED for use, not only improved the focal power ability to take the burden of the highest preceding fixation group of light height; And aberrations such as optical lens second order spectrum have been reduced effectively; The resolution of camera lens is significantly improved, reach mega pixel, can be adaptive with the video camera of high definition.
The optical system that is made up of above-mentioned mirror group has reached following optical index: (1) focal length: short burnt f '≤5.8mm; Long burnt f '=100mm ± 1% becomes multiple proportions greater than 17.2 times; (2) relative aperture: D/f ' is greater than 1/4.5; (3) field angle: 2w=54.8 °～3.4 °; (4) full-size: be not more than 200mm * 136mm * 70mm; (5) weight :≤1.2Kg; (6) resolution of lens: " ccd video camera or cmos camera are adaptive with mega pixel 1/3.
With reference to figure 2 ~ 3, this camera lens length overall L1 is 98mm, is 112mm from front end to optics target surface F distance H 1, the size of camera lens be diameter phi 1 for 81mm and height H 2 in the crossing dotted line scope of 58mm.In order to bear airborne vibration, the rearward end of said camera lens designed a H3 * L2 (wherein: H3=78mm, rectangle flange L2=91mm), on flange, boring 8 diameter phi 2 is the hole of 3.5mm, links into an integrated entity with screw through flange with airborne cabin body; Adopt this mode of connecting firmly to reduce the resonance frequency of camera lens, thereby improve the resistance to shock of camera lens.
With reference to figure 4; Said focus adjusting mechanism comprises focusing electric machine assembly 21 that is installed on the body tube 3 and the preceding arrangement of mirrors tube 23 that preceding fixation group A is installed; Arrangement of mirrors tube 23 is installed in the body tube 3 through preceding arrangement of mirrors seat 20 before said, the preceding arrangement of mirrors tube clamp ring 19 of arrangement of mirrors tube 23 before the front end of said preceding arrangement of mirrors seat 20 is provided with and is used to lock.The gear of said focusing electric machine assembly 21 is fixedly connected with rotor, and the gear of said focusing electric machine assembly 21 is meshed with the external toothing of focusing ring 18.The internal thread of said focusing ring 18 is connected with the external thread of preceding arrangement of mirrors seat 20, the external thread of body tube 3 respectively; Adopting pitch between said focusing ring 18 and the body tube 3 is that the right-hand thread of 2mm is connected, and employing pitch is that the left-hand thread (LHT) of 0.75mm is connected between said focusing ring 18 and the preceding arrangement of mirrors seat 20.Evenly be provided with on the arrangement of mirrors seat 20 before said three respectively with body tube 3 on guide groove match to guide its relative body tube 3 to make the focusing guide pin 22 of rotational motion to linear motion.
When the focusing electric machine assembly 21 electrical power the time; Rotor is done forward and reverse motion; Gear drives focusing ring 18 through engagement and does forward and reverse motion, focusing ring 18 through the right-hand thread that is connected with body tube 3 and before the left-hand thread (LHT) that is connected of arrangement of mirrors tube 23 drive before arrangement of mirrors tube 23, and under three effects that are uniformly distributed with focusing guide pin 22, make forward and reverse rectilinear motion; Thereby the preceding fixation group A that drives camera lens makes forward and reverse rectilinear motion, the purpose of realization system focusing.
With reference to figure 5; Said zoom mechanism comprises and becomes times electric machine assembly 11, change that change doubly organizes B doubly seat 6 and compensation seat 15 that compensation group C is installed are installed; Said change doubly seat 6 is installed in respectively on the front and back end of two guide rods 9 in the body tube 3 with compensation seat 15; Said two guide rods 9 are fixed on the body tube 3 with cam cover 2 respectively symmetrically, and said change doubly seat 6, compensation microscope base is pressed on change times guide pin bushing 8, the compensation guide pin bushing 13 respectively through wringing fit and then is installed on two guide rods 9.The gear of said change times electric machine assembly 11 is meshed with the gear of precision resistor 12 and the gear of cam 10 respectively through third wheel 5.The front and back end of said cam 10 is installed on the body tube 3 and by cam lock collar 17 with back accurate steel balls 16 through preceding accurate steel balls 4 respectively and compresses, and the sliding friction during cam 10 rotations changes rolling friction into, the friction force when moving to reduce cam 10.Said cam 10 mills by the requirement of the optical zoom equation of motion and becomes times curved groove and compensated curve groove; Said change doubly seat 6 is provided with and becomes the change times guide pin 7 that times curved groove matches, and said compensation seat 15 is provided with the compensation guide pin 14 that matches with the compensated curve groove.Wherein, two guide rods 9 are played a supporting role, and will become doubly seat 6, rotatablely moving of compensation seat 15 is converted into rectilinear motion; Become times guide pin bushing 8, compensation guide pin bushing 13 and be in order to increase the length that is slidingly matched, increase the stationarity when becoming doubly seat 6,15 motions of compensation seat.
When the rotor that becomes times electric machine assembly 11 is done positive and negative rotatablely moving; The gearing mesh of the gear of the gear that becomes times electric machine assembly 11 through third wheel 5 and precision resistor 12, cam 10 is rotated precision resistor 12 and cam 10 rotate synchronously, drives and becomes doubly that seat 6, compensation seat 15 move by the mode of change times curved groove, compensated curve groove respectively through becoming times curved groove, compensated curve groove and becoming times guide pin 7, compensation guide pin 14; Realize change times seat 6, compensation seat 15 by rectilinear motion before and after the change times equation of motion requirement work through the motor rotation like this, thereby the focal length of system is changed.When the focal length of system changed, the gear of precision resistor 12 made the potentiometer rotation through third wheel 5 engagements; Then the resistance of potentiometer changes; Can take out the changing value of potentiometer through suitable sample circuit, and pass to control center, thus the demonstration of realization zoom level.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (10)
1. airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution; Comprise focus adjusting mechanism and zoom mechanism, it is characterized in that: in the optical system of said camera lens along light from left to right incident direction to be respectively equipped with focal power be that positive preceding fixation group A, focal power are for B is doubly organized in negative change, focal power is positive back fixation group E for compensation group C, iris assembly D and the focal power of bearing; Fixation group A is provided with the first gummed group of being connected airtight by negative crescent moon lens A-1 and biconvex lens A-2, positive crescent moon lens A-3 and positive crescent moon lens A-4 successively before said; The second gummed group that B is provided with negative crescent moon lens B-1 successively and is connected airtight by biconcave lens B-2 and biconvex lens B-3 is doubly organized in said change; Said compensation group C is provided with the 3rd gummed group of being connected airtight by biconcave lens C-1 and plano-convex lens C-2; The front portion of said back fixation group E is provided with plano-convex lens E-1 and biconvex lens E-2 successively; The middle part is provided with the 4th gummed group and the positive crescent moon lens E-5 that is connected airtight by biconvex lens E-3 and biconcave lens E-4 successively, and the rear portion is provided with the 5th gummed group of being connected airtight by negative crescent moon lens E-6 and biconvex lens E-7.
2. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1 is characterized in that: the airspace that fixation group A and change are doubly organized between the B before said is 0.9mm～31.45mm; The airspace that said change is doubly organized between B and the compensation group C is 29.81mm～5.21mm; Airspace between compensation group C and the back fixation group E is 9.97mm～2.47mm.
3. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1; It is characterized in that: the airspace between first gummed group before said among the fixation group A and the positive crescent moon lens A-3 is 0.1mm, and the airspace between said positive crescent moon lens A-3 and the positive crescent moon lens A-4 is 0.1mm.
4. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1 is characterized in that: negative crescent moon lens B-1 and the airspace between the second gummed group that said change is doubly organized among the B are 3.55mm.
5. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1; It is characterized in that: plano-convex lens E-1 among the said back fixation group E and the airspace between the biconvex lens E-2 are 0.1mm; Airspace between said biconvex lens E-2 and the 4th gummed group is 0.1mm; Airspace between said the 4th gummed group and the positive crescent moon lens E-5 is 0.2mm, and the airspace between said positive crescent moon lens E-5 and the 5th gummed group is 5.95mm.
6. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1 is characterized in that: the positive crescent moon lens A-4 before said among the fixation group A is that the H-FK61 optical material by ED is made.
7. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1, it is characterized in that: the optical system of said camera lens has following optical index: (1) focal length: short burnt f '≤5.8mm; Long burnt f '=100mm ± 1% becomes multiple proportions greater than 17.2 times; (2) relative aperture: D/f ' is greater than 1/4.5; (3) field angle: 2w=54.8 °～3.4 °; (4) full-size: be not more than 200mm * 136mm * 70mm; (5) weight :≤1.2Kg; (6) resolution of lens: adaptive with mega pixel ccd video camera or cmos camera.
8. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1; It is characterized in that: said focus adjusting mechanism comprises focusing electric machine assembly that is installed on the body tube and the preceding arrangement of mirrors tube that preceding fixation group A is installed; The arrangement of mirrors tube is installed in the body tube through preceding arrangement of mirrors seat before said; The gear of said focusing electric machine assembly is fixedly connected with rotor; The gear of said focusing electric machine assembly is meshed with the external toothing of focusing ring; The internal thread of said focusing ring is connected with the external thread of preceding arrangement of mirrors seat, the external thread of body tube respectively, evenly be provided with on the arrangement of mirrors seat before said several respectively with body tube on guide groove match to guide its relative body tube to make the focusing guide pin of rotational motion to linear motion.
9. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1; It is characterized in that: said zoom mechanism comprises and becomes times electric machine assembly, change that change doubly organizes B doubly seat and compensation seat that compensation group C is installed are installed; Said change doubly seat is installed in respectively on the front and back end of two guide rods in the body tube with the compensation seat; The gear of said change times electric machine assembly is meshed with the gear of precision resistor and the gear of cam respectively through third wheel; The front and back end of said cam respectively through preceding accurate steel balls with after accurate steel balls be installed on the body tube and and compress by the cam lock collar; Offer change times curved groove and compensated curve groove on the said cam, said change doubly seat is provided with and becomes the change times guide pin that times curved groove matches, and said compensation seat is provided with the compensation guide pin that matches with the compensated curve groove.
10. the airborne Varifocal pick-up lens of the big multiple proportions of large visual field high resolution according to claim 1; It is characterized in that: the rearward end of said camera lens is provided with the flange that is connected with airborne cabin body; Offer several holes on the said flange, said camera lens links into an integrated entity through screw and airborne cabin body.
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| CN201110435138.0A CN102608732B (en) | 2011-12-22 | 2011-12-22 | Large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens |
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| CN102809805A (en) * | 2012-08-30 | 2012-12-05 | 福建福光数码科技有限公司 | Miniaturized airborne zoom lens with large zooming ratio |
| CN103424852A (en) * | 2013-08-22 | 2013-12-04 | 福建福光数码科技有限公司 | High-magnification and high-definition electric camera lens with magnification varying and zooming functions |
| CN105044891A (en) * | 2015-08-03 | 2015-11-11 | 凯迈（洛阳）测控有限公司 | Large target surface continuous zooming optical system |
| CN106125277A (en) * | 2016-08-24 | 2016-11-16 | 福建福光股份有限公司 | High-contrast high resolution day and night motorized zoom lens and focus adjustment method thereof |
| CN106125271A (en) * | 2016-08-22 | 2016-11-16 | 福建福光股份有限公司 | Zoom short-throw projection camera lens and Zooming method thereof |
| CN106443991A (en) * | 2016-12-16 | 2017-02-22 | 福建福光天瞳光学有限公司 | Long shot type long wave infrared motorized zoom lens and operating method thereof |
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| CN107247324A (en) * | 2017-07-27 | 2017-10-13 | 福建福光股份有限公司 | Minimize high-resolution Penetrating Fog zoom lens |
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| CN102809805A (en) * | 2012-08-30 | 2012-12-05 | 福建福光数码科技有限公司 | Miniaturized airborne zoom lens with large zooming ratio |
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