Title:
OPTICAL PICKUP DEVICE AND OPTICAL DISK DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/098775
Kind Code:
A1
Abstract:
The present invention provides an optical pickup device that enables size to be reduced. The optical pickup device (220) moves in a feeding direction that is parallel to a radial direction of an optical disk that rotates about an axis of rotation (211), and performs recording or playback of information with respect to an information recording surface of the optical disk. The optical pickup device has a first light source (1) for emitting light of a first wavelength, a second light source (2) for emitting light of a second wavelength being different to the first wavelength, a first objective lens (3) for focusing light from the first light source onto the information recording surface, a second objective lens (4) for focusing light from the second light source onto the information recording surface, an optical system for guiding light from the first and second light sources to the first and second objective lenses, respectively, and objective lens actuators for driving the first and second objective lenses. When seen from the direction of the axis of rotation, the first and second objective lenses and the first light source are arranged in series on a line (LX) that passes through the axis of rotation and is parallel to the feeding direction.
Inventors:
MATOZAKI Toshiya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
的崎 俊哉 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
NAKAHARA Hironori (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
的崎 俊哉 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
NAKAHARA Hironori (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2011/078068
Publication Date:
July 26, 2012
Filing Date:
December 05, 2011
Export Citation:
Assignee:
Mitsubishi Electric Corporation (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
MATOZAKI Toshiya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
的崎 俊哉 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
MATOZAKI Toshiya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
的崎 俊哉 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
International Classes:
G11B7/09; G11B7/135
Attorney, Agent or Firm:
MAEDA Minoru et al. (MAEDA & YAMAGATA, Koda Bldg. 4F 16-2, Yoyogi 2-chome, Shibuya-k, Tokyo 53, 〒1510053, JP)
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