Anamorphic prism, optical head and optical...

Details Anamorphic prism, optical head and optical... Anamorphic prism, optical head and optical...

2005-04-05

2005-04-05

Hindi, Nabil (Department: 2655)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112280, C369S044230

Reexamination Certificate

active

06876622

ABSTRACT:
An anamorphic prism according to the invention comprises a first prism2made of a first light transmitting material and a second prism3made of a second light transmitting material, the first prism and the second prism being bonded together along predetermined respective planes thereof, the light beam entering the first prism being expanded or compressed in a particular direction of cross section of the light beam with a predetermined magnification, the expanded or compressed light beam being let to exit from the second prism3and proceed in a direction substantially same as the proceeding direction of the incident light beam entering the first prism2. There are provided an anamorphic prism that can easily modify the intensity distribution of the light beam on the recording medium and allow the device comprising it to operate for signal recording/reproduction in optimal conditions without significantly increasing the dimensions of the device as well as an optical head and an optical recording/reproduction device comprising such an anamorphic prism that are small and can be manufactured with a high manufacturing efficiency.

REFERENCES:
patent: 5272685 (1993-12-01), Ando
patent: 5402269 (1995-03-01), Oono et al.
patent: 5477386 (1995-12-01), Okuda et al.
patent: 5920539 (1999-07-01), Schell et al.
patent: 5978144 (1999-11-01), Li et al.
patent: 5999509 (1999-12-01), Sugiura et al.
patent: 6038089 (2000-03-01), Maruyama et al.
patent: 6567366 (2003-05-01), Kim et al.
patent: WO 99 46769 (1999-09-01), None

Affiliated with

Also associated with

Rating

Anamorphic prism, optical head and optical... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Anamorphic prism, optical head and optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anamorphic prism, optical head and optical... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3392343