Optical pickup for information recording/reproducing apparatus

Details Optical pickup for information recording/reproducing apparatus Optical pickup for information recording/reproducing apparatus

1993-02-17

1995-06-06

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4423, 369 4424, 369112, 369118, G11B 7095

Patent

active

054228700

ABSTRACT:
An optical pickup for use in optically recording or picking up information on and from a recording medium using a light-emitting device. The optical pickup comprises first and second light reflecting surfaces disposed in opposed relation to each other, the first reflecting surface reflects a light beam from the light-emitting device and the second reflecting surface reflects the light beam reflected from the first reflecting surface. Around the first reflecting surface there is provide a grating lens which condenses the light beam reflected from the second reflecting surface to be focused on the recording medium. The light beam from the recording medium is reflected by the second reflecting surface to be directed to the first reflecting surface. The first reflecting surface diffracts the reflected light beam from the second reflecting surface toward a light receiving device to read the information concurrently detecting focusing and tracking error signals. This arrangement can achieve the size-reduction of the optical pickup.

REFERENCES:
patent: 4731772 (1988-03-01), Lee
patent: 4757197 (1988-07-01), Lee
patent: 5113386 (1992-05-01), Whitehead et al.
patent: 5198916 (1993-03-01), Kim

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-992699