Light beam scanning device for correcting scanning speed

Details Light beam scanning device for correcting scanning speed Light beam scanning device for correcting scanning speed

1983-09-06

1986-05-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, 358293, H01J 516

Patent

active

045874204

ABSTRACT:
In a light beam scanning device, first and second light spots scan a scanning plane and a planar grating pattern, respectively. The grating pattern has alternating transparent and opaque parts extending parallel to one another and is rotated by a predetermined angle in its own plane. A speed of scanning the grating pattern by the second light spot is detected to correct irregularities in a speed of scanning the scanning plane with the first light spot. Further, the scanning length on the scanning plane can be finely adjusted by the rotation of the grating pattern.

REFERENCES:
patent: 4206348 (1980-06-01), Davy et al.
patent: 4408826 (1983-10-01), Ike
patent: 4429220 (1984-01-01), Noguchi

Affiliated with

Also associated with

Rating

Light beam scanning device for correcting scanning speed 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 device for correcting scanning speed, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light beam scanning device for correcting scanning speed will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1576118