Optical pickup device with three adhesive parts on two parallel side faces of an optical component
US6992969B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Feb 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/22
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.