Light beam scanning apparatus with adjustable scanning speed and

Details Light beam scanning apparatus with adjustable scanning speed and Light beam scanning apparatus with adjustable scanning speed and

1986-06-09

1987-01-20

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250201, 250227, 250237G, 350 66, 358293, G02B 2610, H01J 328

Patent

active

046381562

ABSTRACT:
A light beam scanning apparatus includes a sweeping unit for sweeping a light beam in response to a first signal. A photodetector has a plurality of optical gratings arranged in an array in a predetermined direction in which the light beam is swept. The photodetector generates a second signal in response to a movement of the light beam along the grating array. A control circuit generates the first signal in response to the second signal. The control circuit detects a scan speed of the light beam based on the second signal, and adjusts the first signal in response to the detected scan speed to control the scan speed of the light beam such that the detected scan speed substantially coincides with a predetermined speed.

REFERENCES:
patent: 4019186 (1977-04-01), Dressen et al.
patent: 4216378 (1980-08-01), Monette
patent: 4329011 (1982-05-01), Mori et al.
patent: 4352984 (1982-10-01), Ohara

Affiliated with

Also associated with

Rating

Light beam scanning apparatus with adjustable scanning speed and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Light beam scanning apparatus with adjustable scanning speed and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light beam scanning apparatus with adjustable scanning speed and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2135987