Optical pickup device having chromatic aberration correction...

Details Optical pickup device having chromatic aberration correction... Optical pickup device having chromatic aberration correction...

2008-06-24

2008-06-24

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112010

Reexamination Certificate

active

07391704

ABSTRACT:
An optical pickup device includes a light source to emit light, an objective lens to focus the light on a recording medium to form a light spot, an optical path changer on an optical path between the light source and the objective lens to change the path of incident light, a chromatic aberration correction lens disposed on an optical path between the light source and the objective lens, and a photodetector to receive light which is reflected from the recording medium and is then incident thereon through the optical path changer. The chromatic aberration correction lens corrects a chromatic aberration occurring due to a change in the wavelength and/or due to an increase in a wavelength bandwidth of the light. The chromatic aberration correction lens includes at least two lenses such that a lens having a positive power and a lens having a negative power are adjacent to each other.

REFERENCES:
patent: 4610515 (1986-09-01), Tanaka
patent: 5479296 (1995-12-01), Maruyana et al.
patent: 5638221 (1997-06-01), Maruyama et al.
patent: 6570827 (2003-05-01), Yamamoto et al.
patent: 64-061715 (1989-03-01), None
patent: 02-257115 (1990-10-01), None
patent: 03-093048 (1991-04-01), None
patent: 4-63312 (1992-02-01), None
patent: 06-076346 (1994-03-01), None
patent: 06-215409 (1994-08-01), None
patent: 07-311337 (1995-11-01), None
patent: 9-311271 (1997-12-01), None
patent: 9-318873 (1997-12-01), None
patent: 09-318873 (1997-12-01), None
patent: 11-016192 (1999-01-01), None
patent: 2000-19388 (2000-01-01), None
patent: 2000-019388 (2000-01-01), None
Office Action issued in Japanese Patent Application No. 2001-204104 on Jun. 20, 2006.
U.S. Appl. No. 09/883,492, filed Jun. 19, 2001, Kim et al., Samsung Electronics Co., Ltd.

Affiliated with

Also associated with

Rating

Optical pickup device having chromatic aberration correction... 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 pickup device having chromatic aberration correction..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical pickup device having chromatic aberration correction... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2813298