Synchronizing signal generator

Details Synchronizing signal generator Synchronizing signal generator

1977-09-22

1979-02-13

Sacher, Paul A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358199, G02B 2717

Patent

active

041392574

ABSTRACT:
In a device wherein a scanning beam from a light source is deflected by a light deflector, especially a rotatable polygonal mirror or a vibratory mirror and focused by an optical element such as a lens or the like to optically scan a surface to be scanned, thereby effecting writing and display of information, a synchronizing signal generator includes an optical system for taking out part of the scanning beam as a synchronizing beam for providing synchronism of signals in scanning. In this device, a diffraction element such as a diffraction grating or the like serving as a beam splitter for splitting the deflected beam to obtain the synchronizing beam is disposed within the deviation range of the deflected beam, and the diffracted beam exiting from the diffraction element is directed to a photodetector so as to provide a synchronizing signal. In this device, the use of the diffraction element as the beam splitter permits a wide area of the scanning beam to be split by a relatively thin member.

REFERENCES:
patent: 3090279 (1963-05-01), Chisholm
patent: 3531183 (1970-09-01), Aagard
patent: 3549239 (1970-12-01), Brienga et al.
patent: 3614205 (1971-10-01), Whitman
patent: 3733979 (1971-07-01), England
patent: 3836257 (1974-09-01), Matsumoto
patent: 3848087 (1974-11-01), Carrol
patent: 3881802 (1975-05-01), Helava
patent: 3891321 (1975-06-01), Hock
patent: 4002830 (1977-01-01), Brown et al.
patent: 4024341 (1977-05-01), Takahashi

Affiliated with

Also associated with

Rating

Synchronizing signal generator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synchronizing signal generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronizing signal generator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-688238