Optical pickup

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

369 4423, 369103, 369112, G11B 700

Patent

active

058055576

ABSTRACT:
There is provided an optical pickup which comprises a light source, an objective lens for converging a beam from the light source onto an optical disc, a diffraction grating for passing a beam returning from the optical disc, a photo-detector for receiving returning beams passing through the diffraction grating. The diffraction grating is divided into two areas, each area including alternatively arranged first diffraction grating pattern and second diffraction grating pattern.

REFERENCES:
patent: 5627812 (1997-05-01), Yamamoto et al.
patent: 5652744 (1997-07-01), Freeman et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

Rate now

     

Profile ID: LFUS-PAI-O-1290241

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.