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1. (WO2018021459) OPTICAL SYSTEM, OPTICAL APPLIANCE, AND METHOD FOR MANUFACTURING OPTICAL SYSTEM
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Pub. No.: WO/2018/021459 International Application No.: PCT/JP2017/027192
Publication Date: 01.02.2018 International Filing Date: 27.07.2017
IPC:
G02B 13/02 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13
Optical objectives specially designed for the purposes specified below
02
Telephoto objectives, i.e. systems of the type + in which the distance from the front vertex to the image plane is less than the equivalent focal length
Applicants: NIKON CORPORATION[JP/JP]; 15-3, Konan 2-chome, Minato-ku, Tokyo 1086290, JP
Inventors: MIWA, Satoshi; JP
YABUMOTO, Hiroshi; JP
Agent: OHNISHI, Shogo; JP
KAWANO, Hiroshi; JP
NAMIKI, Toshiaki; JP
Priority Data:
2016-14724827.07.2016JP
Title (EN) OPTICAL SYSTEM, OPTICAL APPLIANCE, AND METHOD FOR MANUFACTURING OPTICAL SYSTEM
(FR) SYSTÈME OPTIQUE, APPAREIL OPTIQUE, ET PROCÉDÉ DE FABRICATION D'UN SYSTÈME OPTIQUE
(JA) 光学系、光学機器及び光学系の製造方法
Abstract:
(EN) An optical system (OL) that is used in an optical appliance, such as a camera (1), is configured to include: a focusing group (Gf) that is moved during focusing; a diffractive optical element (GD) that is disposed on an object side of the focusing group (Gf); and a negative lens element (L1n) that is disposed on the object side of the diffractive optical element (GD). The optical system (OL) satisfies the following expressions: 0.030 < f/fpf < 0.050, nd1n + 0.006 × νd1n < 1.910, 35 < νd1n, where f signifies the focal distance of the whole system when focused at infinity, fpf signifies the focal distance of the diffractive optical element (GD), nd1n signifies the refractive index of the medium of the negative lens element (L1n) at the d line, and νd1n signifies the Abbe number of the medium of the negative lens element (L1n) at the d line.
(FR) Un système optique (OL) qui est utilisé dans un appareil optique, tel qu'une caméra (1), est configuré pour comprendre : un groupe de focalisation (Gf) qui est déplacé pendant la focalisation; un élément optique diffractif (GD) qui est disposé sur un côté objet du groupe de focalisation (Gf); et un élément de lentille négative (L1n) qui est disposé sur le côté objet de l'élément optique diffractif (GD). Le système optique (OL) satisfait les expressions suivantes : 0.030 < f/fpf < 0.050, nd1n + 0.006 × νd1n < 1.910, 35 < νd1n, où f représente la distance focale du système entier lorsqu'il est focalisé à l'infini, fpf représente la distance focale de l'élément optique diffractif (GD), nd1n représente l'indice de réfraction du milieu de l'élément de lentille négative (L1n) au niveau de la ligne d, et νd1n représente le nombre d'Abbe du milieu de l'élément de lentille négative (L1n) au niveau de la ligne d.
(JA) カメラ(1)等の光学機器に用いられる光学系(OL)が、合焦時に移動する合焦群(Gf)と、この合焦群(Gf)よりも物体側に配置された回折光学素子(GD)と、この回折光学素子(GD)よりも物体側に配置された負レンズ要素(L1n)と、を有して構成される。この光学系(OL)は、次式を満足する。 0.030 < f/fpf < 0.050 nd1n+0.006×νd1n < 1.910 35 < νd1n 但し、 f:無限遠合焦状態における全系の焦点距離 fpf:回折光学素子(GD)の焦点距離 nd1n:負レンズ要素(L1n)の媒質のd線に対する屈折率 νd1n:負レンズ要素(L1n)の媒質のd線に対するアッベ数
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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, 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)