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1. (WO2018163831) LENS SYSTEM, INTERCHANGEABLE LENS DEVICE, AND CAMERA SYSTEM
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Pub. No.: WO/2018/163831 International Application No.: PCT/JP2018/006345
Publication Date: 13.09.2018 International Filing Date: 22.02.2018
IPC:
G02B 13/04 (2006.01) ,G02B 13/14 (2006.01) ,G02B 13/18 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13
Optical objectives specially designed for the purposes specified below
04
Reversed telephoto objectives
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13
Optical objectives specially designed for the purposes specified below
14
for use with infra-red or ultra-violet radiation
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:
パナソニックIPマネジメント株式会社 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. [JP/JP]; 大阪府大阪市中央区城見2丁目1番61号 1-61, Shiromi 2-chome, Chuo-ku, Osaka-shi, Osaka 5406207, JP
Inventors:
庄林 寛幸 SHOBAYASHI Hiroyuki; --
松村 善夫 MATSUMURA Yoshio; --
Agent:
鎌田 健司 KAMATA Kenji; JP
前田 浩夫 MAEDA Hiroo; JP
Priority Data:
2017-04580910.03.2017JP
Title (EN) LENS SYSTEM, INTERCHANGEABLE LENS DEVICE, AND CAMERA SYSTEM
(FR) SYSTÈME D’OBJECTIF, DISPOSITIF D’OBJECTIF INTERCHANGEABLE ET SYSTÈME DE CAMÉRA
(JA) レンズ系、交換レンズ装置及びカメラシステム
Abstract:
(EN) A lens system comprises a first negative power lens element, a second lens element with a concave surface facing an object, and a third positive power lens element in order from the object toward an image surface. The lens system satisfies the following conditions (1) and (2): 0.205 < |(TL1/TA)∙tan (ω)| … (1) 0.120 < IH/TA < 0.170 … (2) Where TL1 represents the center thickness of the first lens element, TA represents an entire optical length, ω represents a half angle of view, and IH represents the image height of the lens system.
(FR) La présente invention concerne un système d’objectif qui comprend un premier élément de lentille à puissance négative, un deuxième élément de lentille comportant une surface concave faisant face à un objet, et un troisième élément de lentille à puissance positive dans l'ordre de l'objet vers une surface d'image. Le système de lentille satisfait aux conditions suivantes (1) et (2) : 0,205 < |(TL1/TA)∙tan (ω)| … (1) 0,120 < IH/TA < 0.170 … (2) où TL1 représente l'épaisseur centrale du premier élément de lentille, TA représente une distance optique totale, ω représente un demi-angle de vision, et IH représente la hauteur d'image du système d’objectif.
(JA) レンズ系は、物体側から像面側へと順に、負のパワーの第1レンズ素子と、物体側に凹面を向けた第2レンズ素子と、正のパワーの第3レンズ素子と、を備え、以下の条件(1)及び(2)を満足する。 0.205<|(TL1/TA)・tan(ω)| ・・・(1) 0.120<IH/TA<0.170 ・・・(2) ただし、 TL1:第1レンズ素子の中心厚み TA:光学全長 ω:半画角 IH:レンズ系の像高 である。
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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, 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: Japanese (JA)
Filing Language: Japanese (JA)