OPTICAL HEAD DEVICE - 株式会社日立製作所

Title:

OPTICAL HEAD DEVICE

Document Type and Number:

Japanese Patent JP3854809

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a low-cost, thin and small sized optical head device having high performance by easily securing the positional accuracy in assembling a prism.
SOLUTION: In optical head device, the highly accurate positioning is realized by exposing a part of the joined surface of the prism, i.e., the reflecting surface to be directly abutted on a holding member such as a case.

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Inventors:

Maeda Nobuyuki
Mitsuo Satake
Masayoshi Watanabe
Shinya Fujimori
Shuji Takahashi
Takahashi Kazumi

Application Number:

JP2001073287A

Publication Date:

December 06, 2006

Filing Date:

March 15, 2001

Export Citation:

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Assignee:

株式会社日立製作所
株式会社日立メディアエレクトロニクス

International Classes:

G02B5/04; G11B7/135; G02B7/00; G11B7/08; (IPC1-7): G11B7/135; G02B5/04; G02B7/00; G11B7/08

Domestic Patent References:

JP61153124U
JP62145210A
JP1081613U
JP5189785A
JP2001043560A
JP7085496A

Attorney, Agent or Firm:

Manabu Inoue

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