Device for optically reading optical recording medium

Details Device for optically reading optical recording medium Device for optically reading optical recording medium

1991-07-17

1992-12-01

McElheny, Jr., Donald

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369110, G11B 7135

Patent

active

051684853

ABSTRACT:
A device for optically reading a recording medium is provided, in which a polarization beam separator includes a transparent plate having a phase network associated with a birefringent material, the refraction index of this material having a first refraction index for the polarization of an incident beam and a second refraction index for the polarization of a reflected beam. Thus, in accordance with the embodiment, the detection devices are placed substantially along the emission axis of the optical source.

REFERENCES:
patent: 4771411 (1988-09-01), Greve
patent: 4805992 (1989-02-01), Maeda
patent: 4824191 (1989-04-01), Kato et al.
patent: 4945529 (1990-07-01), Ono et al.
patent: 5051974 (1991-09-01), Taniguchi et al.
patent: 5077723 (1991-12-01), Yoshimatsu

Affiliated with

Also associated with

Rating

Device for optically reading optical recording medium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for optically reading optical recording medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for optically reading optical recording medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-507468