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1. (WO2006115081) OBJECTIVE OPTICAL ELEMENT FOR OPTICAL PICKUP DEVICE, OPTICAL ELEMENT FOR OPTICAL PICKUP DEVICE, OBJECTIVE OPTICAL ELEMENT UNIT FOR OPTICAL PICKUP DEVICE AND OPTICAL PICKUP DEVICE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/115081    International Application No.:    PCT/JP2006/307901
Publication Date: 02.11.2006 International Filing Date: 14.04.2006
IPC:
G02B 5/18 (2006.01), G11B 7/135 (2012.01)
Applicants: Konica Minolta Opto, Inc. [JP/JP]; 2970, Ishikawa-machi, Hachioji-shi, Tokyo 1928505 (JP) (For All Designated States Except US).
KIMURA, Tohru [JP/JP]; (JP) (For US Only)
Inventors: KIMURA, Tohru; (JP)
Priority Data:
2005-153072 22.04.2005 JP
Title (EN) OBJECTIVE OPTICAL ELEMENT FOR OPTICAL PICKUP DEVICE, OPTICAL ELEMENT FOR OPTICAL PICKUP DEVICE, OBJECTIVE OPTICAL ELEMENT UNIT FOR OPTICAL PICKUP DEVICE AND OPTICAL PICKUP DEVICE
(FR) ELEMENT OPTIQUE A OBJECTIF, ELEMENT OPTIQUE ET UNITE OPTIQUE A OBJECTIF, TOUS DESTINES A UN DISPOSITIF DE CAPTAGE OPTIQUE ET CE MEME DISPOSITIF DE CAPTAGE OPTIQUE
(JA) 光ピックアップ装置用対物光学素子、光ピックアップ装置用光学素子、光ピックアップ装置用対物光学素子ユニット及び光ピックアップ装置
Abstract: front page image
(EN)An optical element for optical pickup device is provided with an optical path difference giving structure which gives a substantial phase change to a luminous flux having a specific wavelength. The optical path difference giving structure is provided with a step having a smaller height than the wavelength (&lgr;1) in an optical axis direction.
(FR)L'invention concerne un élément optique pour un dispositif de captage optique équipé d'une structure de transmission de différence de trajet optique qui transmet un changement de phase considérable à un flux lumineux ayant une longueur d'onde spécifique. Il est prévu que la structure de transmission de différence de trajet optique comporte une phase ayant une hauteur inférieure à la longueur d'onde (?1) dans une direction d'axe optique.
(JA) 本発明に係る構成は、特定の波長の光束に対して実質的な位相の変化を与える光路差付与構造を備え、前記光路差付与構造には、光軸方向の高さが前記波長λ1より小さい段差を備えた段部を有する光ピックアップ装置用光学素子を有する。
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (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, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, 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)