CN102289060B - High-resolution zoom lens for intelligent transportation system - Google Patents
High-resolution zoom lens for intelligent transportation system Download PDFInfo
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- CN102289060B CN102289060B CN201110239589.7A CN201110239589A CN102289060B CN 102289060 B CN102289060 B CN 102289060B CN 201110239589 A CN201110239589 A CN 201110239589A CN 102289060 B CN102289060 B CN 102289060B
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Abstract
The invention relates to a high-resolution zoom lens for an intelligent transportation system. The high-resolution zoom lens provided by the invention comprises a front main lens cone, a middle main lens cone and a rear main lens cone and is characterized in that a front fixing group A arranged in the front main lens cone, a zooming group B arranged in the middle main lens cone, a rear fixing group D arranged in the rear main lens cone and a compensating group E are respectively arranged along the incidence direction of light rays from left to right; and a variable diaphragm C is arranged between the zooming group B and the rear fixing group D. The lens provided by the invention has the advantages of large zooming ratio, large relative aperture, high resolution, wide spectrum confocal performance and the like, is adaptive to a 1/1.8'' CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) photoelectric sensor, is mainly used for shooting and monitoring the busy traffic stream motion conditions, license plate numbers and jam occasions on roads in real time and is a mainstream product in the intelligent transportation system.
Description
Technical field
The present invention relates to a kind of high-resolution zoom for intelligent transportation system apart from camera lens, relate to the video camera technology in the intelligent transportation system, especially relate to high-resolution zoom apart from the confocal lens assembly of wide spectrum.
Background technology
Along with socioeconomic development, highway network are day by day intensive, traffic is day by day busy, in order to safeguard traffic safety, prevent traffic jam, realize in perfect order under the busy road conditions; The development intelligent transportation system has realistic meaning to the management level that improve road.And the video camera technology is a gordian technique in the intelligent transportation system, and video camera system is a critical equipment in the intelligent transportation system; And existing video camera lens series is difficult to find the pick-up lens that can satisfy one by one request for utilization in the intelligent transportation system.
Summary of the invention
The object of the present invention is to provide a kind of high-resolution zoom for intelligent transportation system apart from camera lens, to satisfy current traffic control system for the requirement of video camera technology.
The invention is characterized in: a kind of high-resolution zoom for intelligent transportation system is apart from camera lens, comprise along the front body tube that sets gradually on the light path incident direction, middle body tube and rear body tube, it is characterized in that: along light from left to right incident direction to be respectively equipped with the focal power that is arranged in front body tube be positive front fixedly group A, the focal power that is positioned at body tube for negative zoom group B, the focal power that is positioned at rear body tube are that positive rear fixedly group D and focal power is positive compensation group E, iris C is set between described zoom group B and the rear fixedly group D; Described front fixedly group A comprises cemented doublet group and the positive selenodont lens A-3 that negative selenodont lens A-1 and biconvex lens A-2 connect airtight successively; Described zoom group B comprises negative selenodont lens B-1, biconcave lens B-2 and biconvex lens B-3 successively; Described rear fixedly group D comprises biconvex lens D-1, biconvex lens D-2 and biconcave lens D-3 successively; Described compensation group E comprises biconvex lens E-1, negative selenodont lens E-2 and positive selenodont lens E-3 successively.
Advantage of the present invention: analysis-by-synthesis of the present invention the various shooting requirements of road in monitoring, reasonably formulated the spectrophotometric data of camera lens, make camera lens to tiny sign blur-free imagings such as car plates, can make again the areas imaging of camera lens cover the high signal lamp of hanging and the various marks on road surface; Camera lens is corresponding mobile along the optical axis front and back with compensation group E by zoom group B, thereby realizes changing the function of optical system focal length; The focal power of reasonable distribution A, B, D, four constituent elements of E makes zoom lens's maximum focal length f ' max=55mm; Minimum focus f ' min=8mm.Optical texture length ∑ L≤92mm; Wide spectral range to 485～850nm when optical design carries out aberration correction, use the ingenious combination of the glass material of high index of refraction, low dispersion or high dispersion, low-refraction, especially the A-3 eyeglass is selected the FK61 fluor crown material of Extra-low Dispersion in the A constituent element, by computer optics Computer Aided Design and optimization, the various aberrations of optical lens have been proofreaied and correct perfectly, make the resolution of camera lens reached can with the adaptive image that high definition is arranged of the video camera of 2,000,000 pixels, also can be under the night low-illumination environment blur-free imaging; Design of Mechanical Structure comprises manual zoom mechanism and hand operated focalizing mechanism, drive corresponding cam by front group of nail and the rear nail of dialling with locking effect respectively, use the notch of cam and the helicla flute position limiting structure of main cylinder to be moved axially by the microscope base that guide pin drives zoom group and focusing group, thereby realize zoom, focusing function, fit dimension between each hole axle of strict control cooperates simultaneously, thereby concentricity, precision and the axial location of assurance camera lens is accurate, the smoothly clamping stagnation not of accomplishing again that zoom moves, comfortable feel; Compact, the eurythmy of camera lens general structure has guaranteed the stable and overall attractive in appearance of properties of product; Designed outer cover and played protection auto iris and dustproof effect, the C interface structural design guarantees that camera lens can satisfy the use of C, CS interface video camera simultaneously; When structural design, done the delustring line at the inwall of D-1 D-2 spacer ring, effectively eliminate the halation of camera lens.
Description of drawings
Fig. 1 is embodiment of the invention light channel structure synoptic diagram.
Fig. 2 is embodiment of the invention general structure synoptic diagram.
Embodiment
With reference to figure 1 and Fig. 2, a kind of high-resolution zoom for intelligent transportation system is apart from camera lens, comprise along the front body tube 1 that sets gradually on the light path incident direction, middle body tube 2 and rear body tube 3, along light from left to right incident direction to be respectively equipped with the focal power that is arranged in front body tube be positive front fixedly group A, the focal power that is positioned at body tube for negative zoom group B, the focal power that is positioned at rear body tube are that positive rear fixedly group D and focal power is positive compensation group E, between described zoom group B group and the rear fixedly group D iris C is set; Described front fixedly group A comprises cemented doublet group and the positive selenodont lens A-3 that negative selenodont lens A-1 and biconvex lens A-2 connect airtight successively; Described zoom group B comprises negative selenodont lens B-1, biconcave lens B-2 and biconvex lens B-3 successively; Described rear fixedly group D comprises biconvex lens D-1, biconvex lens D-2 and biconcave lens D-3 successively; Described compensation group E comprises biconvex lens E-1, negative selenodont lens E-2 and positive selenodont lens E-3 successively.
Airspace between above-mentioned front fixedly group A and the zoom group B is 1.54mm～26.16mm; Airspace between described zoom group B and the rear fixedly group D is 27.19mm～2.57mm; Airspace between described rear fixedly group D and the compensation group E is 4.75mm～2.44mm; The cemented doublet group is 0.11mm with the interval of positive selenodont lens A-3 among the described front fixedly group A; Airspace among the described zoom group B between negative selenodont lens B-1 and the biconcave lens B-2 is 2.71mm, and the airspace between biconcave lens B-2 and the biconvex lens B-3 is 1.02mm; Among the described rear fixedly group D, the airspace between biconvex lens D-1 and the biconvex lens D-2 is 0.1mm, and the airspace between biconvex lens D-2 and the biconcave lens D-3 is 0.39mm; Among the described compensation group E, the airspace between biconvex lens E-1 and the negative selenodont lens E-2 is 0.1mm, and the airspace between negative selenodont lens E-2 and the positive selenodont lens E-3 is 1.15mm.
Above-mentioned positive selenodont lens A-3 selects FK61 fluor crown material.
The countersunk head nail 4 of above-mentioned front body tube 1 through being distributed on the end periphery thereafter is connected with the front end of middle body tube 2, the periphery of described middle body tube 2 is arranged with zoom cam 5, the inside of described middle body tube 2 is provided with can be axially movable in order to install the zoom arrangement of mirrors seat 6 of zoom group B, the perimembranous of described zoom arrangement of mirrors seat 6 is connected with an end of guide pin 7, and the other end of described guide pin 7 runs through the helicla flute of middle body tube 2 and is installed in zoom with in the draw-in groove of cam 5.
Above-mentioned middle body tube 2 rearward end are connected by 3 countersunk head nails with the leading section of rear body tube 3, be installed with to install the rear fixedly arrangement of mirrors seat 8 of rear fixedly group D on the front interior of described rear body tube 3, the rear side inside of described rear body tube 3 is provided with can axially movable coupling sleeve 9, the compensation arrangement of mirrors seat 10 that is threaded to install compensation group E interior week of described coupling sleeve 9, the peripheral part of described coupling sleeve 9 is connected with an end of guide pin 11, and the other end of described guide pin 11 runs through the helicla flute of rear body tube 3 and is installed in zoom with in the draw-in groove of cam 5.
Be threaded on the outer end of above-mentioned front body tube 1 in order to the trim ring 12 of fixing group A before fixing, be threaded on the outer end of described zoom arrangement of mirrors seat 6 in order to the fixing trim ring 13 of zoom group B, be threaded on the inner end of described rear fixedly arrangement of mirrors seat 8 in order to the trim ring 14 of fixing group D after fixing, be threaded in order to the trim ring 15 of fixed compensation group E on the outer end of described compensation arrangement of mirrors seat 10.
Be provided with spacer ring 16 between cemented doublet group among the above-mentioned front fixedly group A and the positive selenodont lens A-3, be provided with spacer ring 17 between biconcave lens B-2 among the described zoom group B and the biconvex lens B-3, be provided with spacer ring 18 between biconvex lens D-1 among the described rear fixedly group D and the biconvex lens D-2, be provided with spacer ring 19 between biconvex lens E-1 among the described compensation group E and the negative selenodont lens E-2, be provided with spacer ring 20 between described negative selenodont lens E-2 and the positive selenodont lens E-3.
But above-mentioned zoom is provided with two apical graftings on middle body tube 2 with cam 5 and can be in order to front nail pulling 21 and the rear nail pulling 22 of lock cam.
The outside of above-mentioned zoom cam 5 is provided with in order to dustproof outer cover 23.
The performance index that the present invention realizes:
1. focal length: f '=8～55mm
2. field angle: 2W 〉=60.6 °～9.3 ° (effectively imaging surface n ' 〉=φ 8.72mm)
3. relative aperture: D/ f '=1/1.4
4. be suitable for spectrum: 480nm～850nm
5. resolution: adaptive with the high-definition camera of 2,000,000 pixels
6. optical texture overall length: ∑ L≤92mm
The implementation step:
1, light path design scheme:
With reference to figure 1, the invention provides a kind of wide-angle, high resolution day and night multiple spot zoom lens that is mainly used in intelligent transportation system.Be characterized in: along light from left to right incident direction to be respectively equipped with focal power be that positive front fixedly group A, focal power are that positive rear fixedly group D and focal power is positive compensation group E for negative zoom group B, focal power, between B group and D group, iris C is set.Move along the optical axis front and back are corresponding by zoom group B and compensation group E, realized changing the function of optical system focal length.
Arrange among the described front fixedly group A: two glue groups that negative selenodont lens A-1 and biconvex lens A-2 connect airtight, positive selenodont lens A-3.Wherein lens A-3 selects FK61 fluor crown material.
Arrange among the described zoom group B: negative selenodont lens B-1, biconcave lens B-2 and biconvex lens B-3.
Arrange among the described rear fixedly group D: biconvex lens D-1, biconvex lens D-2 and biconcave lens D-3.
Be provided with biconvex lens E-1, negative selenodont lens E-2 and positive selenodont lens E-3 among the described compensation group E.
Airspace between described front group of A and the zoom group B is: 1.54mm～26.16mm.
Airspace between described zoom group B and the rear fixedly group D is: 27.19mm～2.57mm.
Airspace between described rear fixedly group D and the compensation group E is: 4.75mm～2.44mm.
The interval of cemented doublet group and lens A-3 is 0.11mm among the described front fixedly group A.
Airspace among the described zoom group B between lens B-1 and the lens B-2 is 2.71mm, and the airspace between lens B-2 and the lens B-3 is 1.02mm.
Among the described rear fixedly group D, the airspace between lens D-1 and the lens D-2 is 0.1mm, and the airspace between lens D-2 and the lens D-3 is 0.39mm.
Among the described compensation group E, the airspace between lens E-1 and the lens E-2 is 0.1mm, and the airspace between lens E-2 and the lens E-3 is 1.15mm.
2, Design of Mechanical Structure scheme
Because the resolution of this camera lens is high, zoom ratio is large, in the zoom process, require the visual field, edge of all focal length sections consistent with the resolution of visual field, center, thus in structural design, to guarantee each constituent element of system the actions such as concentricity, zoom, focusing accurately, reliable clamping stagnation good hand touch not.
With reference to figure 2, Design of Mechanical Structure of the present invention comprises: designed front body tube, zoom arrangement of mirrors seat, rear fixedly arrangement of mirrors seat, compensated the eyeglass that the arrangement of mirrors seat fixes whole optical system.Therefore the resolution of money camera lens is higher, so it is very sensitive to everyways such as airspace, hole axle cooperations, so done strict control in mechanical dimension, the tolerance of the mechanical parts internal diameter that all and eyeglass directly cooperate all between 0-0.02mm, thereby guarantee the precision of its cooperation.
Front body tube is equipped with three two groups of formula eyeglasses: the gummed group of (A-1 sheet) and (A-2 sheet), (A-3 sheet); Between two of A-2, A-3, design spacer ring, guaranteed logical light and the airspace of eyeglass; A-1 sheet eyeglass place has designed trim ring, and with fixing whole arrangement of mirrors sheet, and this trim ring does stepped, both saved material, weight reduction, also can better the absorption edge parasitic light.Front body tube is fixed on the middle body tube by three uniform countersunk heads nails, guarantees the concentricity of itself and whole light path.
Zoom arrangement of mirrors seat is equipped with (B-1 sheet), (B-2 sheet), (B-3 sheet) three eyeglasses: B-1 sheet and B-2 sheet directly guarantee its airspace by the eyeglass surface of contact, guarantee its airspace and designed spacer ring between B-2 sheet and B-3 sheet; Designed B-1 sheet trim ring with fixing whole arrangement of mirrors sheet.
Rear fixedly arrangement of mirrors seat is equipped with (D-1 sheet), (D-2 sheet), (D-3 sheet) three eyeglasses; Designed spacer ring and guaranteed logical light and the airspace of D-1 sheet, D-2 sheet, and in order to eliminate the impact of parasitic light, spacer ring has been done the delustring line processed; And the interval between the D-2, D-3 sheet guarantees directly that by face its precision is higher by eyeglass; Done the whole arrangement of mirrors sheet of fixing group in the middle of D-3 sheet trim ring fixes.
Compensation arrangement of mirrors seat is equipped with (E-1 sheet), (E-2 sheet), (E-3 sheet) three eyeglasses: designed respectively spacer ring 19 and spacer ring 20 and guaranteed logical light and airspace between E-1 sheet, E-2 sheet, the E-3 sheet; Designed E-1 sheet trim ring with the whole arrangement of mirrors sheet of fixed compensation group, made it unlikely loosening or come off when the moving lens group; Compensation arrangement of mirrors seat cooperates with coupling sleeve by screw thread, and coupling sleeve cooperates with rear body tube again, thereby guarantees the right alignment of whole light path, makes image quality better.
For realizing manual zoom, the focusing of camera lens, move to realize namely that amount of movement is controlled by the spiral fluted helical pitch on middle body tube and the rear body tube at axial location by zoom group and focusing group.The design guide pin is fixed on the zoom arrangement of mirrors seat, and the helicla flute by middle body tube arrives on the draw-in groove of front cam, mobile front cam drove guide pin with the notch by front cam and moved along the helicla flute of middle body tube this moment, thereby made the mobile in the axial direction purpose that reaches zoom of zoom arrangement of mirrors seat; In like manner designing guide pin is fixed on the coupling sleeve, and coupling sleeve is fixed by screw thread and compensation arrangement of mirrors seat, be that guide pin is fixed on the compensation arrangement of mirrors seat indirectly, and guide pin by the helicla flute on the rear body tube to the draw-in groove of rear cam, cam moved by the helicla flute of notch drive guide pin along rear body tube after this moment was mobile, thereby made the mobile in the axial direction purpose that reaches focusing of compensation arrangement of mirrors seat.For rotate or the vibrations process in the decoking situation does not occur, adopt threaded engagement at copper guide pin, and put nylon jacket at the guide pin top and increase friction force.
For the focal length that prevents from having confirmed gamma camera move or the vibrations process in movingly cause focal length variations to cam, dial before the design nail, rear dial to follow closely lock.
Lens construction of the present invention is compact, eurythmy, has guaranteed the stable and overall aesthetic property of properties of product.Dimensional requirement between each cooperates by strict control can realize that focusing and zoom are accurate reliably, feel is good.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (8)
1. a high-resolution zoom that is used for intelligent transportation system is apart from camera lens, comprise along the front body tube that sets gradually on the light incident direction, middle body tube and rear body tube, it is characterized in that: along light from left to right incident direction to be respectively equipped with the focal power that is arranged in front body tube be positive front fixedly group A, the focal power that is positioned at body tube for negative zoom group B, the focal power that is positioned at rear body tube are that positive rear fixedly group D and focal power is positive compensation group E, iris C is set between described zoom group B and the rear fixedly group D; Described front fixedly group A comprises cemented doublet group and the positive selenodont lens A-3 that negative selenodont lens A-1 and biconvex lens A-2 connect airtight successively; Described zoom group B comprises negative selenodont lens B-1, biconcave lens B-2 and biconvex lens B-3 successively; Described rear fixedly group D comprises biconvex lens D-1, biconvex lens D-2 and biconcave lens D-3 successively; Described compensation group E comprises biconvex lens E-1, negative selenodont lens E-2 and positive selenodont lens E-3 successively; Airspace between described front fixedly group A and the zoom group B is 1.54mm～26.16mm; Airspace between described zoom group B and the rear fixedly group D is 27.19mm～2.57mm; Airspace between described rear fixedly group D and the compensation group E is 4.75mm～2.44mm; The cemented doublet group is 0.11mm with the interval of positive selenodont lens A-3 among the described front fixedly group A; Airspace among the described zoom group B between negative selenodont lens B-1 and the biconcave lens B-2 is 2.71mm, and the airspace between biconcave lens B-2 and the biconvex lens B-3 is 1.02mm; Among the described rear fixedly group D, the airspace between biconvex lens D-1 and the biconvex lens D-2 is 0.1mm, and the airspace between biconvex lens D-2 and the biconcave lens D-3 is 0.39mm; Among the described compensation group E, the airspace between biconvex lens E-1 and the negative selenodont lens E-2 is 0.1mm, and the airspace between negative selenodont lens E-2 and the positive selenodont lens E-3 is 1.15mm.
2. the high-resolution zoom for intelligent transportation system according to claim 1 is apart from camera lens, and it is characterized in that: described positive selenodont lens A-3 selects FK61 fluor crown material.
3. the high-resolution zoom for intelligent transportation system according to claim 1 is apart from camera lens, it is characterized in that: the countersunk head nail of described front body tube through being distributed on the end periphery thereafter is connected with the front end of middle body tube, the periphery of described middle body tube is arranged with the zoom cam, the inside of described middle body tube is provided with can be axially movable in order to install the zoom arrangement of mirrors seat of zoom group B, the perimembranous of described zoom arrangement of mirrors seat is connected with an end of zoom group guide pin, and the other end of described zoom group guide pin runs through the helicla flute of middle body tube and is installed in zoom with in the draw-in groove of cam.
4. the high-resolution zoom for intelligent transportation system according to claim 3 is apart from camera lens, it is characterized in that: described middle body tube rearward end is connected by 3 countersunk head nails with the leading section of rear body tube, be installed with to install the rear fixedly arrangement of mirrors seat of rear fixedly group D on the front interior of described rear body tube, the rear side inside of described rear body tube is provided with can axially movable coupling sleeve, the compensation arrangement of mirrors seat that is threaded to install compensation group E interior week of described coupling sleeve, the peripheral part of described coupling sleeve is connected with an end of compensation group guide pin, and the other end of described compensation group guide pin runs through the helicla flute of rear body tube and is installed in zoom with in the draw-in groove of cam.
5. the high-resolution zoom for intelligent transportation system according to claim 4 is apart from camera lens, it is characterized in that: be threaded on the outer end of described front body tube in order to the trim ring of fixing group A before fixing, be threaded on the outer end of described zoom arrangement of mirrors seat in order to the fixing trim ring of zoom group B, be threaded on the inner end of described rear fixedly arrangement of mirrors seat in order to the trim ring of fixing group D after fixing, be threaded in order to the trim ring of fixed compensation group E on the outer end of described compensation arrangement of mirrors seat.
6. the high-resolution zoom for intelligent transportation system according to claim 5 is apart from camera lens, it is characterized in that: be provided with spacer ring between the cemented doublet group among the described front fixedly group A and the positive selenodont lens A-3, be provided with spacer ring between biconcave lens B-2 among the described zoom group B and the biconvex lens B-3, be provided with spacer ring between biconvex lens D-1 among the described rear fixedly group D and the biconvex lens D-2, be provided with spacer ring between biconvex lens E-1 among the described compensation group E and the negative selenodont lens E-2, be provided with spacer ring between described negative selenodont lens E-2 and the positive selenodont lens E-3.
7. the high-resolution zoom for intelligent transportation system according to claim 6 is characterized in that apart from camera lens: but described zoom is provided with two apical graftings on middle body tube with cam and can be in order to front nail pulling and the rear nail pulling of lock cam.
8. the high-resolution zoom for intelligent transportation system according to claim 7 is characterized in that apart from camera lens: the outside of described zoom cam is provided with in order to dustproof outer cover.
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| CN201110239589.7A CN102289060B (en) | 2011-08-20 | 2011-08-20 | High-resolution zoom lens for intelligent transportation system |
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| CN201110239589.7A CN102289060B (en) | 2011-08-20 | 2011-08-20 | High-resolution zoom lens for intelligent transportation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102608732B (en) * | 2011-12-22 | 2013-09-04 | 福建福光数码科技有限公司 | Large-view-field high-resolution high-rate vehicle-mounted zoom pick-up lens |
| CN103345048B (en) * | 2013-07-03 | 2015-03-25 | 福建福光数码科技有限公司 | High magnification zoom camera lens suitable for image stabilization system |
| CN103809274B (en) * | 2014-03-03 | 2016-03-30 | 福建福光股份有限公司 | Wide-angle high-power zoom lens doubles mirror |
| CN106291884B (en) * | 2016-11-16 | 2018-11-27 | 南京信息职业技术学院 | High-definition digital projection objective lens |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202171678U (en) * | 2011-08-20 | 2012-03-21 | 福建福光数码科技有限公司 | High-resolution zoom lens for intelligent traffic system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202171678U (en) * | 2011-08-20 | 2012-03-21 | 福建福光数码科技有限公司 | High-resolution zoom lens for intelligent traffic system |
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Address after: 158 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Patentee after: FUJIAN FORECAM CO., LTD. Address before: 350015, No. 87 Jun Zhu Road, Mawei District, Fujian, Fuzhou Patentee before: Fujian Forecam Optics Co., Ltd. |