Objective lens system for optical pickups

Details Objective lens system for optical pickups Objective lens system for optical pickups

2005-07-26

2005-07-26

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

Microscope objective

C359S662000, C359S664000, C359S718000, C359S719000, C369S112010, C369S112230

Reexamination Certificate

active

06922289

ABSTRACT:
An objective lens system for optical pickups reading and/or writing information by condensing a luminous flux from a light source onto an optical information recording medium, consists of, a single lens having, from a light source side, a first surface convex to the light source side and a second surface convex to an image side. A medium of the single lens is a homogeneous medium. At least one of the two surfaces is aspherical. The system satisfies the predetermined conditions.

REFERENCES:
patent: 4613212 (1986-09-01), Norikazu
patent: 4655556 (1987-04-01), Kajitani
patent: 4729645 (1988-03-01), Suda
patent: 4828373 (1989-05-01), Suda et al.
patent: 4842388 (1989-06-01), Tanaka et al.
patent: 6014271 (2000-01-01), Uchida et al.
patent: 6147956 (2000-11-01), Jutte et al.
patent: 6411442 (2002-06-01), Ota et al.
patent: 6512640 (2003-01-01), Ota et al.
patent: 6597519 (2003-07-01), Saito
patent: 6744568 (2004-06-01), Kitamura et al.
patent: 6785215 (2004-08-01), Yamanouchi et al.
patent: 6819504 (2004-11-01), Maruyama
patent: 6822800 (2004-11-01), Koreeda et al.
patent: 2002/0097661 (2002-07-01), Itonaga et al.
patent: 2004/0246877 (2004-12-01), Ishizaki et al.
patent: 2004/0257673 (2004-12-01), Sugi et al
patent: 2004/0257959 (2004-12-01), Arai et al
patent: 60181714 (1985-09-01), None
patent: 61056314 (1986-03-01), None
patent: 61177409 (1986-08-01), None
patent: 01177006 (1989-07-01), None
patent: 05-039447 (1993-06-01), None
patent: 2001-297471 (2001-10-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3405383