Optical scanning apparatus

Details Optical scanning apparatus Optical scanning apparatus

1988-03-28

1989-05-02

Arnold, Bruce Y.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

350 37, 35016223, 369100, 369109, G02B 532, G02B 2744

Patent

active

048262706

ABSTRACT:
An apparatus is described for optically scanning an information surface by moving said surface relative to a beam, which apparatus comprises a radiation source for supplying a beam, a collimator lens and an objective for focusing the beam to a spot in the information plane. The height of the apparatus can be reduced and/or a beam having an asymmetrical cross-section can be converted into a beam having a symmetrical cross-section by arranging a reflective diffraction grating with a suitable grating period between the collimator lens and the objective, while the angle of incidence between the normal on the grating and the chief ray of the scanning beam deviates considerably from 45.degree..

REFERENCES:
patent: 4355858 (1982-10-01), Funato et al.
patent: 4440839 (1984-04-01), Mottier
patent: 4760565 (1988-07-01), Jipson et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-580508