CN104049347A - Compact type oversized-image-plane continuous zooming lens - Google Patents
Compact type oversized-image-plane continuous zooming lens Download PDFInfo
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- CN104049347A CN104049347A CN201410277347.0A CN201410277347A CN104049347A CN 104049347 A CN104049347 A CN 104049347A CN 201410277347 A CN201410277347 A CN 201410277347A CN 104049347 A CN104049347 A CN 104049347A
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Abstract
The invention relates to a compact type oversized-image-plane continuous zooming lens. A front fixed mirror set with positive focal power, a zoom mirror set with negative focal power, a compensating mirror set with negative focal power and a rear fixed mirror set with the positive iris diaphragm and focal power are arranged in the light incidence direction, the front fixed mirror set is provided with a positive selenodont lens and a gluing set with a negative selenodont lens and the positive selenodont lens closely connected, the zoom mirror set is provided with a biconvex lens, a gluing set with the biconvex lens and a positive selenodont lens closely connected and a negative selenodont lens, the compensating mirror set is provided with a gluing set with a positive selenodont lens and a negative selenodont lens closely connected, and the rear fixed mirror set is provided with a biconvex lens, a gluing set with a negative selenodont lens and the biconvex lens closely connected, a flat concave lens, a positive selenodont lens, a gluing set with the flat concave lens and the biconvex lens closely connected and a gluing set with a biconcave lens and the biconvex lens closely connected. The defect that the fixed vertical axis aberration of a large-target-surface imaging system is large is overcome, and the compact type oversized-image-plane continuous zooming lens can be matched with a high-pixel vidicon.
Description
Technical field
The present invention relates to a kind of compact super large image planes continuous magnification lens, belong to field of photoelectric technology.
Background technology
Long distance type system is because of the feature of its distinctive compact conformation, and is widely used system being proposed to the occasion that strict geometric shape restriction requires.But this system also has intrinsic shortcoming, such as: the main focal power of system concentrates on system forward part, has increased on spherical aberration, axle the especially correction difficulty of the axial aberration such as second order spectrum of aberration; Focal power separate front and back phenomenon is more serious, and off-axis aberration especially chromatic longitudiinal aberration, distortion etc. has seriously limited the field angle of long distance type system, is difficult to applying in large target surface system; Particularly, when requiring this type systematic and high definition camera adaptive, more increased design difficulty.
Summary of the invention
In order to overcome above-mentioned defect, the object of the invention is to for video camera system provides a kind of compact super large image planes continuous magnification lens, can be adaptive with the video camera of high definition, high performance video image is provided.
To achieve these goals, technical scheme of the present invention is: a kind of compact super large image planes continuous magnification lens, in the optical system of described camera lens along light from left to right incident direction to be provided with successively focal power be positive front fixed mirror group, focal power is negative zoom mirror group, focal power is negative compensating glass group, iris and focal power are positive rear fixed mirror group, the gummed group I that described front fixed mirror group is provided with successively positive selenodont eyeglass A-1 and is connected airtight by negative selenodont eyeglass A-2 and positive selenodont eyeglass A-3, described zoom mirror group is provided with biconvex eyeglass B-1 successively, the gummed group II and the negative selenodont eyeglass B-4 that by concave-concave eyeglass B-2 and positive selenodont eyeglass B-3, are connected airtight, described compensating glass group is provided with the gummed group III of being connected airtight by positive selenodont eyeglass C-1 and negative selenodont eyeglass C-2 successively, described rear fixed mirror group is provided with biconvex eyeglass E-1 successively, the gummed group IV of being connected airtight by negative selenodont eyeglass E-2 and biconvex eyeglass E-3, planoconcave lens E-4, positive selenodont eyeglass E-5, the gummed group V of being connected airtight by planoconcave lens E-6 and biconvex eyeglass E-7 and the gummed group VI of being connected airtight by concave-concave eyeglass E-8 and biconvex eyeglass E-9.
Further, airspace between described front fixed mirror group and zoom mirror group is 62.39mm ~ 1.73mm, airspace between described zoom mirror group and compensating glass group is 4.52mm ~ 58.72mm, and the airspace between described compensating glass group and rear fixed mirror group is 0.8mm ~ 7.26mm.
Further, the positive selenodont eyeglass A-1 in described front fixed mirror group and the airspace between gummed group I are 0.15mm; Biconvex eyeglass B-1 in described zoom mirror group and the airspace between gummed group II are 0.10mm, and the airspace between described gummed group II and negative selenodont eyeglass B-4 is 3.01mm; Biconvex eyeglass E-1 in described rear fixed mirror group and the airspace between gummed group IV are 0.12mm, airspace between described gummed group IV and planoconcave lens E-4 is 0.91mm, airspace between described planoconcave lens E-4 and positive selenodont eyeglass E-5 is 0.10mm, airspace between described positive selenodont eyeglass E-5 and gummed group V is 12.31mm, and the airspace between described gummed group V and gummed group VI is 0.54mm.
Compared with prior art, the present invention has the following advantages:
(1) by the focal power of reasonable distribution A, B, C, tetra-constituent elements of E, make optical system overall length and the ratio of the maximum focus value of camera lens reach 0.54, far below general long distance type dioptric system (0.75 ~ 0.85).
(2) suitable complicated particular demographic, realized the densification of system, and by the optical glass material of the high refraction of unusual application, high dispersion on eyeglass E-7, E-9, proofreaied and correct the intrinsic vertical axial aberration of large target surface imaging system, make it adaptive with high-pixel camera machine.
(3) at eyeglass A-3, select the optical glass material H-FK61 of Extra-low Dispersion, solved the intrinsic second order spectrum aberration of large logical light quantity long distance type system, spherochromatism, high-order spherical aberration etc. and be difficult to the problem of proofreading and correct, the resolution of camera lens is improved.
(4) there is the functions such as Power focus, electric continuous zooming heat, electronic light modulation and focal length be preset, can realize the robotization of control, guaranteeing, under the prerequisite of compact conformation, to improve the anti-seismic performance of camera lens, can under severe vibration environment, normally work.
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 diagram of the embodiment of the present invention.
Fig. 2 is the mechanical construction drawing of the embodiment of the present invention.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the right view of Fig. 2.
Fig. 5 is the stereographic map of Fig. 2.
Fig. 6 is the Power focus mechanism map of the embodiment of the present invention.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the power zoom mechanism map of the embodiment of the present invention.
Fig. 9 is the left view of Fig. 8.
Figure 10 is the electric adjustable ray machine composition of the embodiment of the present invention.
Figure 11 is the cut-open view at A-A place in Figure 10.
In Fig. 1: fixed mirror group before A., the positive selenodont eyeglass of A-1. A-1, A-2. bears selenodont eyeglass A-2, A-3. positive selenodont eyeglass A-3, B. zoom mirror group, B-1. biconvex eyeglass B-1, B-2. concave-concave eyeglass B-2, B-3. positive selenodont eyeglass B-3, B-4. bear selenodont eyeglass B-4, C. compensating glass group, the positive selenodont eyeglass of C-1. C-1, C-2. bear selenodont eyeglass C-2, D. iris; E. fixed mirror group after, E-1. biconvex eyeglass E-1, E-2. bears selenodont eyeglass E-2, E-3. biconvex eyeglass E-3, E-4. planoconcave lens E-4, the positive selenodont eyeglass of E-5. E-5, E-6. planoconcave lens E-6, E-7. biconvex eyeglass E-7, E-8. concave-concave eyeglass E-8, E-9. biconvex eyeglass E-9, F. image planes.
In Fig. 2 ~ 5: fixed mirror assembly before 2-1., 2-2. zoom mirror assembly, 2-3. compensation assembly, 2-4. body tube, 2-5. iris, fixation kit after 2-6., 2-7. camera assembly, 2-8. Power focus mechanism, 2-9. power zoom mechanism, 2-10. electric adjustable optical mechanism.
In Fig. 6 ~ 7: the positive selenodont eyeglass of 3-1. A-1,3-2. bears selenodont eyeglass A-2, the positive selenodont eyeglass of 3-3. A-3, group spacer ring before 3-4., group trim ring I before 3-5., group trim ring II before 3-6., 3-7. focusing ring, arrangement of mirrors cylinder before 3-8., 3-9. focusing barrel, 3-10. focuses on and dials nail, and 3-11. focuses on gear, and 3-12. focuses on motor, 3-13. focusing motor rack, 3-14. focuses on limiting bracket, and 3-15. focuses on limit switch, and 3-16. focuses on banking pin.
In Fig. 8 ~ 9: 4-1. body tube, 4-2. cam cover, 4-3. zoom cam, 4-4. guide rod, 4-5. steel ball, 4-6. zoom bearing, 4-7. zoom cam trim ring, 4-8. connects base, 4-9. zoom limiting bracket, 4-10. zoom limit switch, 4-11. zoom banking pin, 4-12. zoom motor, 4-13. zoom driving wheel, 4-14. zoom potentiometer gear, 4-15. zoom potentiometer, 4-16. zoom motor rack.
In Figure 10 ~ 11: 5-1. biconvex eyeglass E-1, 5-2. bears selenodont eyeglass E-2, 5-3. biconvex eyeglass E-3, 5-4. planoconcave lens E-4, the positive selenodont eyeglass of 5-5. E-5, 5-6. diaphragm sheet, 5-7. diaphragm rivet, after 5-8., organize spacer ring I, 5-9. diaphragm rotating ring trim ring, 5-10. diaphragm rotating ring, 5.11 diaphragm seat, 5-12. aperture setting ring, 5-13. diaphragm is dialled nail, 5-14. light hurdle regulating ring trim ring, after 5-15., organize pad, after 5-16., organize spacer ring II, after 5-17., organize trim ring I, after 5-18., organize trim ring II, arrangement of mirrors cylinder after 5-19., 5-20. planoconcave lens E-6, 5-21. biconvex eyeglass E-7, 5-22. concave-concave eyeglass E-8, 5-23. biconvex eyeglass E-9, 5-24. diaphragm limit switch, the spacing plectrum of 5-25. diaphragm, 5-26. diaphragm limiting bracket, 5-27. diaphragm motor rack, 5-28. diaphragm motor gear, 5-29. diaphragm motor.
Embodiment
As shown in Figure 1, a kind of compact super large image planes continuous magnification lens, in the optical system of described camera lens along light from left to right incident direction to be provided with successively focal power be positive front fixed mirror group A, focal power is negative zoom mirror group B, focal power is negative compensating glass group C, iris D and focal power are positive rear fixed mirror group E, the gummed group I that described front fixed mirror group A is provided with successively positive selenodont eyeglass A-1 and is connected airtight by negative selenodont eyeglass A-2 and positive selenodont eyeglass A-3, described zoom mirror group B is provided with biconvex eyeglass B-1 successively, the gummed group II and the negative selenodont eyeglass B-4 that by concave-concave eyeglass B-2 and positive selenodont eyeglass B-3, are connected airtight, described compensating glass group C is provided with the gummed group III of being connected airtight by positive selenodont eyeglass C-1 and negative selenodont eyeglass C-2 successively, described rear fixed mirror group E is provided with biconvex eyeglass E-1 successively, the gummed group IV of being connected airtight by negative selenodont eyeglass E-2 and biconvex eyeglass E-3, planoconcave lens E-4, positive selenodont eyeglass E-5, the gummed group V of being connected airtight by planoconcave lens E-6 and biconvex eyeglass E-7 and the gummed group VI of being connected airtight by concave-concave eyeglass E-8 and biconvex eyeglass E-9.
In the present embodiment, airspace between described front fixed mirror group A and zoom mirror group B is 62.39mm ~ 1.73mm, airspace between described zoom mirror group B and compensating glass group C is 4.52mm ~ 58.72mm, and the airspace between described compensating glass group C and rear fixed mirror group E is 0.8mm ~ 7.26mm.Wherein, the positive selenodont eyeglass A-3 in described front fixed mirror group A adopts Extra-low Dispersion glass material to make.
In the present embodiment, the positive selenodont eyeglass A-1 in described front fixed mirror group A and the airspace between gummed group I are 0.15mm; Biconvex eyeglass B-1 in described zoom mirror group B and the airspace between gummed group II are 0.10mm, and the airspace between described gummed group II and negative selenodont eyeglass B-4 is 3.01mm; Biconvex eyeglass E-1 in described rear fixed mirror group E and the airspace between gummed group IV are 0.12mm, airspace between described gummed group IV and planoconcave lens E-4 is 0.91mm, airspace between described planoconcave lens E-4 and positive selenodont eyeglass E-5 is 0.10mm, airspace between described positive selenodont eyeglass E-5 and gummed group V is 12.31mm, and the airspace between described gummed group V and gummed group VI is 0.54mm.
In the present embodiment, the optical system consisting of above-mentioned lens set has reached following optical index: (1) focal length: f '=65.6～398.5mm; (2) zoom ratio: 6 times; (3) relative aperture D/f '=1/6; (4) field angle 2 ω: 20.1 °～3.25 °; (5) resolution: adaptive with high-definition camera; (6) light path overall length ∑ D≤214.8mm; (7) applicable spectral line scope: 450nm～700nm.
The present invention, when light path design, selects long distance type structure, and reasonable arrangement optical power profile reduces optical system overall length and the ratio of system maximum focus value as far as possible; Because the main focal power of system concentrates on forward part, increased on spherical aberration, axle the especially correction difficulty of the axial aberration such as second order spectrum of aberration, front fixed mirror group A particularly, born the task of aberration on most of corrective system axle, therefore the optical glass (positive selenodont eyeglass A-3) that has used a slice Extra-low Dispersion, significantly improves the resolution of camera lens; Because long distance type system focal power separate front and back phenomenon is more serious, off-axis aberration especially chromatic longitudiinal aberration, distortion etc. has seriously limited the field angle of long distance type system, be difficult to apply in large target surface system, simultaneously for fear of giving the too large aberration correction pressure of system forward part, therefore in rear fixed mirror group E, arranging of focal power carried out elaborately planned and suitably complicated, the particularly application of latter two glue pellet, greatly help system is proofreaied and correct chromatic longitudiinal aberration; On biconvex eyeglass E-7, biconvex eyeglass E-9, break through traditional lens materials matching method, the optical glass material of unusual application high index of refraction, high dispersion, improves image quality.
As shown in Fig. 2 ~ 5, in the physical construction of described camera lens, be provided with successively from left to right front fixed mirror assembly 2-1, zoom mirror assembly 2-2, compensation assembly 2-3, iris assembly 2-5, rear fixation kit 2-6 and camera assembly 2-7, the front portion of described camera lens is provided with the 2-8 of Power focus mechanism, the middle part of described camera lens is provided with the 2-9 of power zoom mechanism, the rear portion of described camera lens is provided with electric adjustable optical mechanism 2-10, and the described Power focus 2-8 of mechanism, the 2-9 of power zoom mechanism and electric adjustable optical mechanism 2-10 are respectively around the surrounding that is distributed in camera lens.Wherein, the described power zoom 2-9 of mechanism is provided with a zoom potentiometer 4-15 who realizes focal length preparatory function, and described zoom potentiometer 4-15 is precision resistor.
As shown in Fig. 6 ~ 7, described front fixed mirror assembly 2-1 is by positive selenodont eyeglass A-1(3-1 with front group of trim ring I 3-5), negative selenodont eyeglass A-2(3-2), positive selenodont eyeglass A-3(3-3) be installed on respectively in front arrangement of mirrors cylinder 3-8 and be pressed in focusing barrel 3-9 by front group of trim ring II 3-6, described positive selenodont eyeglass A-1(3-1) be to be pressed in front arrangement of mirrors cylinder 3-8 by front group of trim ring I 3-5, described negative selenodont eyeglass A-2(3-2) and positive selenodont eyeglass A-3(3-3) gummed group I for connecting airtight, described positive selenodont eyeglass A-1(3-1) and between gummed group I be provided with front group of spacer ring 3-4.The described Power focus 2-8 of mechanism comprises focusing motor 3-12, focusing barrel 3-9 and the focusing limit switch 3-15 that accurately controls focal position, described focusing motor 3-12 is placed on body tube 4-1 by focusing on motor rack 3-13, described focusing limit switch 3-15 is arranged on body tube 4-1 by focusing on limiting bracket 3-14, on described body tube 4-1, offer precision machined 3 120 ° of uniform guide grooves, on the motor shaft of described focusing motor 3-12, be provided with and focus on gear 3-11, described focusing barrel 3-9 is provided with focusing ring 3-7, described focusing gear 3-11 is by rotating with the rear focusing ring 3-7 that drives of focusing ring 3-7 gear engagement, described focusing ring 3-7 drives focusing barrel 3-9, in described focusing barrel 3-9 week side, be fixed with 3 120 ° of uniform focusing and dial nail 3-10, by focusing, dialling nail 3-10 matches and by helical motion, is converted to axially-movable with the relative body tube 4-1 of guided focused lens barrel 3-9 with guide groove on body tube 4-1, thereby before driving, fixed mirror assembly 4-2's moves forward and backward, realize focusing function.
As shown in Fig. 8 ~ 9, described zoom mirror assembly 2-2 and compensation assembly 2-3 are installed in guide rod 4-4 and go up and be slidably matched, three guide rod 4-4 are separately fixed on body tube 4-1 by cam cover 4-2, described zoom cam 4-3 is pressed on body tube 4-1 by zoom bearing 4-6 and zoom cam trim ring 4-7, on described zoom cam 4-3, offer precision machined two curved grooves, described body tube 4-1 be connected base 4-8 and be connected.The 2-9 of power zoom mechanism of described camera lens comprises zoom motor 4-12, and for accurately controlling the zoom limit switch 4-10 of the burnt position of length, described zoom limit switch 4-10 is arranged on body tube 4-1 by zoom limiting bracket 4-9, described zoom motor 4-12 is placed on body tube 4-1 by zoom motor rack 4-16, on the motor shaft of described zoom motor 4-12, zoom gear 4-13 is installed, described zoom gear 4-13 is by rotating with the rear zoom cam 4-3 that drives of zoom cam 4-3 gear engagement, described zoom cam 4-3 drives zoom mirror assembly 2-2 and compensation assembly 2-3 to relatively move along zoom cam 4-3 curved groove by the rolling of steel ball 4-5, thereby realize the variation of lens focus, complete zoom process.Simultaneously, described zoom gear 4-13 is by rotating with the rear zoom potentiometer gear 4-14 that drives of zoom potentiometer gear 4-14 engagement, the rotation of described zoom potentiometer gear 4-14 changes the resistance of zoom potentiometer 4-15, thus, between focal length and zoom potentiometer 4-15 resistance, form man-to-man relation, by this approach sensor, can realize the preparatory function of focal length.
As shown in Figure 10 ~ 11, described rear fixation kit 2-6 is by by biconvex eyeglass E-1(5-1), negative selenodont eyeglass E-2(5-2) and biconvex eyeglass E-3(5-3) the gummed group IV of connecting airtight, planoconcave lens E-4(5-4), positive selenodont eyeglass E-5(5-5) be installed on respectively in diaphragm seat 5-11, described positive selenodont eyeglass E-5(5-5) by rear group of trim ring I 5-17, be pressed in diaphragm seat 5-11, described biconvex eyeglass E-1(5-1) and between gummed group IV, be provided with rear group of spacer ring I 5-8, described planoconcave lens E-4(5-4) and positive selenodont eyeglass E-5(5-5) between be provided with rear group of spacer ring II, described rear fixation kit 2-6 is also by planoconcave lens E-6(5-20) and biconvex eyeglass E-7(5-21) the gummed group V, the concave-concave eyeglass E-8(5-22 that connect airtight) and biconvex eyeglass E-9(5-23) the gummed group VI of connecting airtight is installed on respectively in rear arrangement of mirrors cylinder 5-19, described gummed group V is pressed in rear arrangement of mirrors cylinder 5-19 by rear group of trim ring II 5-18.Described electric adjustable optical mechanism 2-10 comprises diaphragm motor 5-29 and for accurately controlling the diaphragm limit switch 5-24 of diaphragm openings of sizes position, described diaphragm limit switch 5-24 is arranged on diaphragm seat 5-11 by diaphragm limiting bracket 5-26, on described aperture setting ring 5-12, be also fixed with diaphragm switch plectrum 5-25, described diaphragm motor 5-29 is placed on diaphragm seat 5-11 by diaphragm motor rack 5-27, diaphragm gear 5-28 is installed on the motor shaft of described diaphragm motor 5-29, described diaphragm gear 5-28 is by rotating with the rear aperture setting ring 5-12 that drives of aperture setting ring 5-12 gear engagement, described aperture setting ring 5-12 is pressed on diaphragm seat 5-11 by aperture setting ring trim ring 5-14, described aperture setting ring 5-12 dials nail 5-13 and drives diaphragm rotating ring 5-10 to rotate by being fixed on diaphragm on diaphragm rotating ring 5-10, described diaphragm rotating ring 5-10 is pressed in diaphragm seat 5-11 by diaphragm rotating ring trim ring 5-9, described diaphragm rotating ring 5-10 drives diaphragm sheet 5-6 to rotate, thereby control the variation of aperture openings size, realize the process of electronic control aperture size.
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 (8)
1. a compact super large image planes continuous magnification lens, it is characterized in that: in the optical system of described camera lens along light from left to right incident direction to be provided with successively focal power be positive front fixed mirror group, focal power is negative zoom mirror group, focal power is negative compensating glass group, iris and focal power are positive rear fixed mirror group, the gummed group I that described front fixed mirror group is provided with successively positive selenodont eyeglass A-1 and is connected airtight by negative selenodont eyeglass A-2 and positive selenodont eyeglass A-3, described zoom mirror group is provided with biconvex eyeglass B-1 successively, the gummed group II and the negative selenodont eyeglass B-4 that by concave-concave eyeglass B-2 and positive selenodont eyeglass B-3, are connected airtight, described compensating glass group is provided with the gummed group III of being connected airtight by positive selenodont eyeglass C-1 and negative selenodont eyeglass C-2 successively, described rear fixed mirror group is provided with biconvex eyeglass E-1 successively, the gummed group IV of being connected airtight by negative selenodont eyeglass E-2 and biconvex eyeglass E-3, planoconcave lens E-4, positive selenodont eyeglass E-5, the gummed group V of being connected airtight by planoconcave lens E-6 and biconvex eyeglass E-7 and the gummed group VI of being connected airtight by concave-concave eyeglass E-8 and biconvex eyeglass E-9.
2. compact super large image planes continuous magnification lens according to claim 1, it is characterized in that: the airspace between described front fixed mirror group and zoom mirror group is 62.39mm ~ 1.73mm, airspace between described zoom mirror group and compensating glass group is 4.52mm ~ 58.72mm, and the airspace between described compensating glass group and rear fixed mirror group is 0.8mm ~ 7.26mm.
3. compact super large image planes continuous magnification lens according to claim 1 and 2, is characterized in that: the positive selenodont eyeglass A-1 in described front fixed mirror group and the airspace between gummed group I are 0.15mm.
4. compact super large image planes continuous magnification lens according to claim 1 and 2, it is characterized in that: the biconvex eyeglass B-1 in described zoom mirror group and the airspace between gummed group II are 0.10mm, the airspace between described gummed group II and negative selenodont eyeglass B-4 is 3.01mm.
5. compact super large image planes continuous magnification lens according to claim 1 and 2, it is characterized in that: the biconvex eyeglass E-1 in described rear fixed mirror group and the airspace between gummed group IV are 0.12mm, airspace between described gummed group IV and planoconcave lens E-4 is 0.91mm, airspace between described planoconcave lens E-4 and positive selenodont eyeglass E-5 is 0.10mm, airspace between described positive selenodont eyeglass E-5 and gummed group V is 12.31mm, and the airspace between described gummed group V and gummed group VI is 0.54mm.
6. compact super large image planes continuous magnification lens according to claim 1, is characterized in that: the positive selenodont eyeglass A-3 in described front fixed mirror group adopts Extra-low Dispersion glass material to make.
7. compact super large image planes continuous magnification lens according to claim 1, is characterized in that: the physical construction front portion of described camera lens is provided with Power focus mechanism, and middle part is provided with power zoom mechanism, and rear portion is provided with electric adjustable optical mechanism.
8. compact super large image planes continuous magnification lens according to claim 7, is characterized in that: described power zoom mechanism is provided with one for realizing the precision resistor of focal length preparatory function.
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| CN104965297A (en) * | 2015-06-25 | 2015-10-07 | 福建省光学技术研究所 | Rear group adjusting video shooting high-definition zoom lens and rear group adjusting method for lens |
| CN105044889A (en) * | 2015-08-06 | 2015-11-11 | 福建福光股份有限公司 | High resolution zoom lens having strong fog penetration function and control method |
| CN108873277A (en) * | 2018-08-17 | 2018-11-23 | 福建福光股份有限公司 | A kind of big zoom ratio high definition zoom lens of compact wide-angle |
| CN111929800A (en) * | 2020-08-14 | 2020-11-13 | 西安应用光学研究所 | Multi-channel continuous zooming camera device suitable for airborne multispectral reconnaissance equipment |
| US11204488B2 (en) | 2017-09-04 | 2021-12-21 | Zhejiang Dahua Technology Co., Ltd. | Lens system and imaging device |
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| CN104965297B (en) * | 2015-06-25 | 2017-05-24 | 福建省光学技术研究所 | Rear group adjusting video shooting high-definition zoom lens and rear group adjusting method for lens |
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