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1. (WO2018042129) WIDE-ANGLE OPTICAL SYSTEM WITH VARIABLE FOCUS
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Pub. No.: WO/2018/042129 International Application No.: PCT/FR2017/052310
Publication Date: 08.03.2018 International Filing Date: 30.08.2017
IPC:
G02B 15/16 (2006.01) ,G02B 13/06 (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
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13
Optical objectives specially designed for the purposes specified below
06
Panoramic objectives; So-called "sky lenses"
Applicants:
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - CNRS [FR/FR]; 3, rue Michel Ange 75016 Paris, FR
UNIVERSITÉ D'AIX-MARSEILLE [FR/FR]; 58 Boulevard Charles Livon 13007 Marseille, FR
Inventors:
HUGOT, Emmanuel; FR
JAHN, Wilfried; FR
FERRARI, Marc; FR
Agent:
MARKS & CLERK FRANCE; Priori, Enrico Immeuble Visium 22, avenue Aristide Briand 94117 Arcueil Cedex, FR
Priority Data:
16 5810401.09.2016FR
Title (EN) WIDE-ANGLE OPTICAL SYSTEM WITH VARIABLE FOCUS
(FR) SYSTÈME OPTIQUE GRAND ANGLE À FOCALE VARIABLE
Abstract:
(EN) A fisheye-type wide-angle optical system (1) with variable focus mounted on an electronic image formation system (2) comprising a non-planar electronic image sensor (3) with fixed radius of curvature. The optical system comprises a first group of lenses (A) with negative refractive power and a second group of lenses (B) with positive refractive power moving with respect to each other between a shorter focal distance configuration and a longer focal distance configuration. The optical system satisfies condition (I) where C is the radius of curvature of the image formed by the optical system and bfw is the distance between the end lens of the imaged space of the second group of lenses and the object image formed by the optical system in the shorter focal distance configuration.
(FR) Système optique (1) grand angle de type fisheye à focale variable monté sur un système de formation d' image électronique (2) comportant un capteur d'image électronique non-planaire (3) à rayon de courbure fixe. Le système optique comprend un premier groupe de lentilles (A) à vergence négative et un deuxième groupe de lentilles (B) à vergence positive se déplaçant l'un par rapport à l'autre entre une configuration de plus courte distance focale et une configuration de plus longue distance focale. Le système optique satisfait à la condition (I) où C est le rayon de courbure de l'image formée par le système optique et bfw est la distance entre la lentille d'extrémité de l'espace image du deuxième groupe de lentilles et l'image objet formée par le système optique dans la configuration de plus courte distance focale.
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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: French (FR)
Filing Language: French (FR)