Patent Number: 7,821,901

Title: Optical pickup device for supporting a plurality of types of optical disks

Abstract: The optical pickup device includes a semiconductor laser for emitting laser light of 650 nm and 780 nm in wavelengths, a semiconductor laser for emitting laser light of 400 nm in wavelength, and an optical sensor which is provided in sequence with a first light receiving surface divided into four areas in a matrix manner, a second light receiving surface divided into four areas in a matrix manner, and a third light receiving surface divided at least into two areas aligned inline. Reflected light of three beams of 400 nm in wavelength and reflected light of three beams in 780 nm in wavelength are received on the first to third light receiving surfaces respectively, and a main beam of reflected light of 650 nm in wavelength is received on the first light receiving surface on one side out of the three light receiving surfaces.

Inventors: Matsui; Tsutomu (Osaka, JP)

Assignee: Funai Electric Co., Ltd.

International Classification: G11B 7/13 (20060101)

Expiration Date: 2018-10-26 0:00:00