Optical pickup device with three adhesive parts on two...

Details Optical pickup device with three adhesive parts on two... Optical pickup device with three adhesive parts on two...

2006-01-31

2006-01-31

Miller, Brian E. (Department: 2652)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

Reexamination Certificate

active

06992969

ABSTRACT:
In an optical pickup device, reliability of a holding structure for an optical component (a half mirror) with respect to a pair of mounting frames is intended to be enhanced. A half mirror (5) is arranged so as to bridge a first frame (11) and a second frame (12). A side face (5C) positioned in a part in which one side of an emitting face (5B) (a mounting face) of this half mirror 5 and the first frame (11) are overlapped is fixed to the first frame (11) by adhesives (13A) of two contact points. On the other hand, a side face (5) positioned in a part in which the other side of the emitting face (5B) and the second frame (12) are overlapped is fixed to the second frame (12) by an adhesive (13B) of one contact point. In this manner, even in case where the frames (11, 12) have been displaced due to thermal expansion, the adhesives (13A,13B) will not be flaked off, and bonding strength of the half mirror will be enhanced.

REFERENCES:
patent: 4719614 (1988-01-01), Leterme et al.
patent: 5296988 (1994-03-01), Fujino
patent: 5872662 (1999-02-01), Lee
patent: 2002/0118628 (2002-08-01), Tachikawa et al.

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