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1. (WO2010073573) DIFFRACTIVE LENS AND IMAGE PICKUP DEVICE USING THE SAME
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/073573 International Application No.: PCT/JP2009/007033
Publication Date: 01.07.2010 International Filing Date: 18.12.2009
Chapter 2 Demand Filed: 22.06.2010
IPC:
G02B 13/00 (2006.01) ,G02B 5/18 (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
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
18
Diffracting gratings
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:
パナソニック株式会社 PANASONIC CORPORATION [JP/JP]; 大阪府門真市大字門真1006番地 1006, Oaza Kadoma, Kadoma-shi, Osaka 5718501, JP (AllExceptUS)
是永継博 KORENAGA, Tsuguhiro; null (UsOnly)
安藤貴真 ANDO, Takamasa; null (UsOnly)
Inventors:
是永継博 KORENAGA, Tsuguhiro; null
安藤貴真 ANDO, Takamasa; null
Agent:
奥田誠司 OKUDA, Seiji; 大阪府大阪市中央区北浜一丁目8番16号 大阪証券取引所ビル10階 奥田国際特許事務所 OKUDA & ASSOCIATES, 10th Floor, Osaka Securities Exchange Bldg., 8-16, Kitahama 1-chome, Chuo-ku, Osaka-shi, Osaka 5410041, JP
Priority Data:
2008-33511526.12.2008JP
Title (EN) DIFFRACTIVE LENS AND IMAGE PICKUP DEVICE USING THE SAME
(FR) LENTILLE DIFFRACTIVE ET DISPOSITIF DE CAPTURE D'IMAGE L'UTILISANT
(JA) 回折レンズ、およびこれを用いた撮像装置
Abstract:
(EN) A diffractive lens (11) comprises a lens substrate (18) which is provided, on its second surface (13), with first and second diffraction grating-shaped portions (20 and 21), and a protection film (17) provided on the first diffraction grating-shaped portion (20).  The first diffraction grating-shaped portion (20) has a plurality of first diffraction steps and the second diffraction grating-shaped portion (21) has a plurality of second diffraction steps which are lower than the first diffraction steps.  The material of which one of the substrate (18) and the protection film (17) is made has a higher refractive index and a larger Abbe’s number than those of the material of which the other is made.  The second diffraction steps are not covered by the protection film (17).
(FR) L'invention porte sur une lentille diffractive (11) comprenant un substrat de lentille (18) qui comporte, sur sa seconde surface (13), des première et seconde parties en forme de réseau de diffraction (20 et 21), et un film de protection (17) disposé sur la première partie en forme de réseau de diffraction (20). La première partie en forme de réseau de diffraction (20) a une pluralité de premiers gradins de diffraction et la seconde partie en forme de réseau de diffraction (21) a une pluralité de seconds gradins de diffraction qui sont inférieurs aux premiers gradins de diffraction. Le matériau dont l'un du substrat (18) et du film de protection (17) est fait a un indice de réfraction et un nombre d'Abbe supérieurs à ceux du matériau dont l'autre du substrat (18) et du film de protection (17) est fait. Les seconds gradins de diffraction ne sont pas couverts par le film de protection (17).
(JA) 本発明の回折レンズ11は、第2面13に第1、第2の回折格子形状部20、21が設けられたレンズ基材18と、第1の回折格子形状部20上に配置された保護膜17とを有する回折レンズであって、第1の回折格子形状部20は複数の第1の回折段差を有し、第2の回折格子形状部21は、第1の回折段差よりも高さの小さい複数の第2の回折段差を有し、基材18の材料と保護膜17との材料のうち、いずれか一方の材料は、他方の材料よりも高屈折率かつ高アッベ数であり、第2の回折段差は、保護膜17によって覆われていない。
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, 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, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, 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, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
JP4630393JPWO2010073573US20110102898CN102077127