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1. (WO2017033445) PROJECTION OPTICAL SYSTEM AND PROJECTOR
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Pub. No.: WO/2017/033445 International Application No.: PCT/JP2016/003789
Publication Date: 02.03.2017 International Filing Date: 19.08.2016
IPC:
G02B 17/08 (2006.01) ,G02B 13/18 (2006.01) ,G03B 21/14 (2006.01) ,G03B 21/00 (2006.01)
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
17
Systems with reflecting surfaces, with or without refracting elements
08
Catadioptric systems
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
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21
Projectors or projection-type viewers; Accessories therefor
14
Details
G PHYSICS
03
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
B
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21
Projectors or projection-type viewers; Accessories therefor
Applicants:
セイコーエプソン株式会社 SEIKO EPSON CORPORATION [JP/JP]; 東京都新宿区新宿四丁目1番6号 1-6, Shinjuku 4-chome, Shinjuku-ku, Tokyo 1608801, JP
Inventors:
峯藤 延孝 MINEFUJI, Nobutaka; JP
Agent:
渡辺 和昭 WATANABE, Kazuaki; JP
西田 圭介 NISHIDA, Keisuke; JP
仲井 智至 NAKAI, Satoshi; JP
Priority Data:
2015-16347621.08.2015JP
Title (EN) PROJECTION OPTICAL SYSTEM AND PROJECTOR
(FR) SYSTÈME OPTIQUE DE PROJECTION ET PROJECTEUR
(JA) 投射光学系及びプロジェクター
Abstract:
(EN) To provide a projection optical system capable of performing proximity projection while being compact, and a projector that is provided with the projection optical system. A projection optical system 40 is provided with a first optical group 40a that is a refractive optical system, and a second optical group 40b that is a reflection optical system. The second optical group 40b includes first to third reflection optical systems MR1-MR3, which respectively have a first reflecting surface having a concave shape, a second reflecting surface having a curved shape, and a third reflecting surface having a convex shape. The first to third reflection optical systems MR1-MR3 satisfy conditional formula (1) relating to focal point distance. Image light outputted from the first optical group 40a is reflected by the second optical group 40b, and is projected to a surface to which the light is to be projected.
(FR) L'invention concerne un système optique de projection susceptible d'effectuer une projection de proximité tout en étant compact, ainsi qu'un projecteur qui est pourvu du système optique de projection. Un système optique de projection (40) est pourvu d'un premier groupe optique (40a) qui est un système optique de réfraction et d'un second groupe optique (40b) qui est un système optique de réflexion. Le second groupe optique (40b) comprend des premier à troisième systèmes optiques de réflexion MR1 à MR3, qui ont respectivement une première surface réfléchissante ayant une forme concave, une deuxième surface réfléchissante ayant une forme incurvée et une troisième surface réfléchissante ayant une forme convexe. Les premier, deuxième et troisième systèmes optiques de réflexion MR1 à MR3 satisfont la formule conditionnelle (1) se rapportant à une distance de point focal. La lumière d'image émise par le premier groupe optique (40a) est réfléchie par le second groupe optique (40b) et est projetée sur une surface vers laquelle doit être projetée la lumière.
(JA) コンパクトながら近接投射が可能な投射光学系、及び当該投射光学系を備えたプロジェクターを提供すること。 投射光学系40は、屈折光学系である第1光学群40aと反射光学系である第2光学群40bとを備えている。第2光学群40bは、凹面形状を有する第1反射面、曲面形状を有する第2反射面及び凸面形状を有する第3反射面をそれぞれ有する第1~第3反射光学系MR1~MR3を含む。第1~第3反射光学系MR1~MR3は、焦点距離に関する条件式(1)を満たす。第1光学群40aから射出された画像光は第2光学群40bによって反射され、被投射面に投射される。
front page image
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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, KE, KG, KN, KP, KR, 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)