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1. (WO2017130478) ZOOM LENS AND IMAGING DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/130478 International Application No.: PCT/JP2016/080923
Publication Date: 03.08.2017 International Filing Date: 19.10.2016
Chapter 2 Demand Filed: 23.03.2017
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:
2016-01313527.01.2016JP
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 during changes in magnification; and a positive final lens group Ge that remains fixed during changes in magnification. The first lens group G1 comprises in the order from the object side: a negative first lens group front group G1a; a positive first lens group middle group G1b that moves during focusing; and a positive first lens group rear group G1c. The first lens group front group G1a includes, in the order from the object side continuously, a negative meniscus lens with the concave surface facing an image side, and a negative lens with the concave surface facing the object side. The components of the zoom lens satisfy a prescribed conditional expression.
(FR) L'invention concerne un zoom qui est compact mais conserve 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 dispositif d'imagerie équipé du zoom. Le zoom comprend, dans l'ordre depuis un 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 durant les changements de grossissement; et un dernier groupe de lentilles positives Ge qui reste fixe durant les changements de grossissement. Le premier groupe de lentilles G1 comprend, dans l'ordre depuis le côté objet : un premier groupe avant G1a de groupes de lentilles négatives; un premier groupe intermédiaire G1b de groupes de lentilles positives qui se déplace pendant la mise au point; et un premier groupe arrière G1c de groupes de lentilles positives. Le premier groupe avant G1a de groupes de lentilles positives comprend, dans l'ordre depuis le côté objet en continu, une lentille ménisque négative ayant la surface concave qui fait face à un côté image, et une lentille négative ayant la surface concave qui fait face au côté objet. Les éléments du zoom satisfont à une expression conditionnelle prescrite.
(JA) 高ズーム比を確保しつつ、小型に構成可能で、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と、変倍の際に移動する複数の移動レンズ群と、変倍の際に固定されている正の最終レンズ群Geとからなる。第1レンズ群G1は、物体側から順に、負の第1レンズ群前群G1aと、合焦の際に移動する正の第1レンズ群中群G1bと、正の第1レンズ群後群G1cとからなる。第1レンズ群前群G1aは、最も物体側から順に連続して、像側に凹面を向けた負メニスカスレンズと、物体側に凹面を向けた負レンズとを有する。ズームレンズの構成要素は、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:
CN108604002US20180299656