Objective lens unit and optical pickup device

Details Objective lens unit and optical pickup device Objective lens unit and optical pickup device

2006-02-15

2010-02-02

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

Reexamination Certificate

active

07656773

ABSTRACT:
An objective lens unit for an optical pickup device which is composed of a first optical element including a first element body positioned on an optical information recording medium side and a first annular portion formed on the outer periphery of the first element body, and further composed of a second optical element including a second element body and a second annular light source side of the first element body and a second annular portion formed on the outer periphery of the second element body and coupled to the first annular portion, and at least one of the first and second annular portion has a portion in which the size of outer shape is smaller than the vicinity on at least a part of the light source side.

REFERENCES:
patent: 7236445 (2007-06-01), Hattori et al.
patent: 7515523 (2009-04-01), Kimura et al.

Affiliated with

Also associated with

Rating

Objective lens unit and optical pickup device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Objective lens unit and optical pickup device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Objective lens unit and optical pickup device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4152849