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1. (WO2019042452) LENS SYSTEM AND IMAGING DEVICE
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Pub. No.: WO/2019/042452 International Application No.: PCT/CN2018/103872
Publication Date: 07.03.2019 International Filing Date: 04.09.2018
IPC:
G02B 15/173 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
15
Optical objectives with means for varying the magnification
14
by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
16
with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
163
having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
167
having an additional fixed front lens or group of lenses
173
arranged + +
Applicants:
ZHEJIANG DAHUA TECHNOLOGY CO., LTD. [CN/CN]; No. 1187 Binan Road, Binjiang District Hangzhou, Zhejiang 310053, CN
Inventors:
HU, Changtao; CN
LIU, Kai; CN
LIN, Faguan; CN
DING, Hongxing; CN
Agent:
METIS IP (CHENGDU) LLC; (No. 846 South Tianfu Road) Tianfu Innovation Center Chengdu, Sichuan 610213, CN
Priority Data:
201710786947.304.09.2017CN
Title (EN) LENS SYSTEM AND IMAGING DEVICE
(FR) SYSTÈME D'IMAGERIE ET DISPOSITIF D'IMAGERIE
Abstract:
(EN) An imaging device includes a lens system (100). The lens system (100) may include a first lens group (G1), a second lens group (G2), a third lens group (G3), a fourth lens group (G4), and a fifth lens group (G5) in sequence from an object side to an image side along an optical axis (102) of the lens system (100). At least one of the first lens group (G1), the second lens group (G2), the third lens group (G3), the fourth lens group (G4), and the fifth lens group (G5) may be adjustable along the optical axis (102) of the lens system (100) to adjust a focal length of the lens system (100). The lens system (100) may satisfy (I).
(FR) L'invention concerne un dispositif d'imagerie qui comprend un système de lentille (100). Le système de lentilles (100) peut comprendre un premier groupe de lentilles (G1), un deuxième groupe de lentilles (G2), un troisième groupe de lentilles (G3), un quatrième groupe de lentilles (G4), et un cinquième groupe de lentilles (G5) en séquence d'un côté objet à un côté image le long d'un axe optique (102) du système de lentilles (100). Au moins l'un du premier groupe de lentilles (G1), du deuxième groupe de lentilles (G2), du troisième groupe de lentilles (G3), du quatrième groupe de lentilles (G4), et du cinquième groupe de lentilles (G5) peut être réglé le long de l'axe optique (102) du système de lentilles (100) pour régler une longueur focale du système de lentilles (100). Le système de lentilles (100) peut satisfaire (I).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)