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1. (WO2017099244) ZOOM LENS, OPTICAL INSTRUMENT AND METHOD FOR MANUFACTURING ZOOM LENS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/099244 International Application No.: PCT/JP2016/086815
Publication Date: 15.06.2017 International Filing Date: 09.12.2016
IPC:
G02B 15/20 (2006.01) ,G02B 13/18 (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
20
having an additional movable lens or lens group for varying the objective focal length
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13
Optical objectives specially designed for the purposes specified below
18
with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
Applicants:
株式会社ニコン NIKON CORPORATION [JP/JP]; 東京都港区港南二丁目15番3号 15-3, Konan 2-chome, Minato-ku, Tokyo 1086290, JP
Inventors:
古井田 啓吾 KOIDA, Keigo; JP
Agent:
大西 正悟 OHNISHI, Shogo; JP
川野 宏 KAWANO, Hiroshi; JP
並木 敏章 NAMIKI, Toshiaki; JP
Priority Data:
2015-24067209.12.2015JP
Title (EN) ZOOM LENS, OPTICAL INSTRUMENT AND METHOD FOR MANUFACTURING ZOOM LENS
(FR) OBJECTIF DE ZOOM, INSTRUMENT OPTIQUE ET PROCÉDÉ DE FABRICATION D’OBJECTIF DE ZOOM
(JA) ズームレンズ、光学機器及びズームレンズの製造方法
Abstract:
(EN) This zoom lens is configured to have: a first lens group (G1) having a negative refractive power; a second lens group (G2) having a positive refractive power; a third lens group (G3) having a negative refractive power; and a fourth lens group (G4) having a positive refractive power, the lens groups being aligned along the optical axis in this order from the object side, and the zoom lens satisfying the following conditional expression . 1.60 < (-f1)/fw < 2.50 where , f1 is a focal distance of the first lens group , and fw is a focal distance of the entire zoom lens at the wide-angle end.
(FR) La présente invention concerne un objectif de zoom qui est configuré de manière à comprendre : un premier groupe de lentilles (G1) ayant une réfringence négative ; un deuxième groupe de lentilles (G2) ayant une réfringence positive ; un deuxième groupe de lentilles (G3) ayant une réfringence négative ; et un quatrième groupe de lentilles (G4) ayant une réfringence positive, le groupe de lentilles étant aligné le long de l’axe optique dans cet ordre depuis le côté objet, et l’objectif de zoom satisfait à l’expression conditionnelle suivante 1,60 < (-f1)/fw < 2,50 où, f1 est une distance totale du premier groupe de lentilles, et fw est une distance focale de l’objectif de zoom entier à l’extrémité de grand angle.
(JA) 光軸に沿って物体側から順に並んだ、負の屈折力を有する第1レンズ群(G1)と、正の屈折力を有する第2レンズ群(G2)と、負の屈折力を有する第3レンズ群(G3)と、正の屈折力を有する第4レンズ群(G4)とを有して構成されるズームレンズであり、下記の条件式を満足する。 1.60<(-f1)/fw<2.50 但し、f1: 第1レンズ群の焦点距離 fw: 広角端状態におけるズームレンズ全体の焦点距離
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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, 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 Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
CN108369329US20190064492