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1. (WO2017130479) ZOOM LENS AND IMAGING DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/130479 International Application No.: PCT/JP2016/081133
Publication Date: 03.08.2017 International Filing Date: 20.10.2016
IPC:
G02B 15/167 (2006.01) ,G02B 13/18 (2006.01) ,G02B 15/20 (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
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
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
Applicants:
富士フイルム株式会社 FUJIFILM CORPORATION [JP/JP]; 東京都港区西麻布2丁目26番30号 26-30, Nishiazabu 2-chome, Minato-ku, Tokyo 1068620, JP
Inventors:
米澤 賢 YONEZAWA Masaru; JP
池田 伸吉 IKEDA Shinkichi; JP
Agent:
中島 順子 NAKASHIMA Junko; JP
米倉 潤造 YONEKURA Junzo; JP
村上 泰規 MURAKAMI Yasunori; JP
Priority Data:
2016-01313627.01.2016JP
Title (EN) ZOOM LENS AND IMAGING DEVICE
(FR) ZOOM ET IMAGEUR
(JA) ズームレンズおよび撮像装置
Abstract:
(EN) Provided are a zoom lens that is compact yet maintains a high zoom ratio, for which chromatic aberrations are satisfactorily corrected, and that has high optical performance, and an imaging device equipped with the zoom lens. The zoom lens comprises in the order from an object side: a positive first lens group G1 that remains fixed during changes in magnification; a plurality of movable lens groups that moves so as to change the interval between adjacent groups along the optical axis during changes in magnification; and a positive final lens group Ge that remains fixed during changes in magnification. At least one movable lens group has a negative refractive power. The first lens group G1 includes a positive image-side lens which is a positive lens arranged closest to an image, and one or more positive lenses arranged at positions closer to the object than the positive image-side lens. A prescribed conditional expression relating to the positive image-side lens is satisfied.
(FR) L'invention concerne un zoom qui est compact mais conserve quand même un rapport de zoom élevé, pour lequel les aberrations chromatiques sont corrigées de façon satisfaisante, et qui présente des performances optiques élevées. L'invention concerne également un imageur équipé du zoom. Le zoom comprend, dans l'ordre depuis le côté objet : un premier groupe de lentilles positives G1 qui reste fixe durant des changements de grossissement ; une pluralité de groupes de lentilles mobiles qui se déplacent de manière à changer l'intervalle compris entre des groupes le long de l'axe optique durant des changements de grossissement ; et un dernier groupe de lentilles positives Ge qui reste fixe durant les changements de grossissement. Au moins un groupe mobile de lentilles a une réfringence négative. Le premier groupe de lentilles G1 comprend une lentille côté image positive qui est une lentille positive disposée le plus près d'une image, et une ou plusieurs lentilles positives agencées en des positions plus proches de l'objet que la lentille du côté image positive. Une expression conditionnelle prescrite concernant la lentille côté image positive est satisfaite.
(JA) 高ズーム比を確保しつつ、小型に構成可能であり、色収差が良好に補正されて高い光学性能を有するズームレンズ、およびこのズームレンズを備えた撮像装置を提供する。ズームレンズは、物体側から順に、変倍の際に固定されている正の第1レンズ群G1、変倍の際に隣り合う群との光軸方向の間隔を変化させて移動する複数の移動レンズ群、および変倍の際に固定されている正の最終レンズ群Geを備える。少なくとも1つの移動レンズ群は負の屈折力を有する。第1レンズ群G1は、最も像側に配置された正レンズである像側正レンズと、この像側正レンズより物体側に配置された1枚以上の正レンズとを有する。像側正レンズに関する所定の条件式を満足する。
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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, 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:
CN108474927US20180299642