Objective lens, optical pickup device, recorder and reproducer

Details Objective lens, optical pickup device, recorder and reproducer Objective lens, optical pickup device, recorder and reproducer

2006-02-14

2006-02-14

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

06999399

ABSTRACT:
It is to provide an objective lens for being provided in an optical pickup device for carrying out at least one of a record of information on at least two types of optical information storing media and a reproduction of information from the optical information storing media. In the optical pickup device comprising the first and second light sources, a third-order spherical aberration component of the wavefront aberration caused in a first region that a numerical aperture on the side of the optical information storing medium is not more than NA2which is required for the record/reproduction, is over. When the standard deviation value of an absolute value thereof is WSA2rms·λ2,the inequality 0.015≦WSA2rms≦0.06 is satisfied. The light transmitted in the second region that a numerical aperture on the side of the optical information storing medium is over NA2,becomes a flare light.

REFERENCES:
patent: 5889748 (1999-03-01), Shimano et al.
patent: 6192021 (2001-02-01), Saito et al.
patent: 6671247 (2003-12-01), Arai et al.
patent: 6785215 (2004-08-01), Yamanouchi et al.
patent: 2001/0028626 (2001-10-01), Maruyama et al.
patent: 9-54973 (1997-02-01), None
patent: 11-86319 (1999-03-01), None
patent: 11-96585 (1999-04-01), None
Arai, Norikazu et al., “Optical pickup apparatus, recording/reproducing apparatus provided with the optical pickup apparatus, optical element, and information recording/reproducing method”, 2001-8513, published (Jul. 19, 2001).

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3648956