Optical head device that prevents the displacement of the...

Details Optical head device that prevents the displacement of the... Optical head device that prevents the displacement of the...

2003-12-19

2008-08-19

Feild, Joseph (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

07414926

ABSTRACT:
An optical head device including a photo detector and an optical system which converges a laser beam emitted by a laser light source onto an optical recording medium and also guides a returning beam from the optical recording medium to the photo detector. The optical head device further includes a base on which the laser light and the photo detector are mounted. An optical element is mounted on the base via an optical element holder which has the same linear expansion coefficient as that of the base and is fixed with adhesive directly to the base. The optical element is fixed on a surface which is perpendicular to a device optical axis of the element holder.

REFERENCES:
patent: 4641023 (1987-02-01), Ando et al.
patent: 5083302 (1992-01-01), Tsuyuguchi et al.
patent: 6356526 (2002-03-01), Ito
patent: 2000-266977 (2000-09-01), None

Affiliated with

Also associated with

Rating

Optical head device that prevents the displacement of the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical head device that prevents the displacement of the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical head device that prevents the displacement of the... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3999415