Light beam scanning apparatus

Details Light beam scanning apparatus Light beam scanning apparatus

1998-08-24

2000-05-23

Lee, John R.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, 250235, H01J 314, G02B 2610

Patent

active

060668466

ABSTRACT:
A synchronizing light beam applied to a reference grating passes through the reference grating as a pulsed synchronizing light beam, which is converged by a convex entrance surface of a light guide rod onto a rear surface thereof. The synchronizing light beam is then diffused and reflected by a diffusion surface on the rear surface, and applied to photodiodes on respective opposite ends of the light guide rod. The photodiodes converts the applied light to a synchronizing signal.

REFERENCES:
patent: 4853535 (1989-08-01), Suganuma
patent: 5072114 (1991-12-01), Takada
patent: 5200849 (1993-04-01), Iangaki et al.
patent: 5247173 (1993-09-01), Benchetrit et al.
patent: 5347124 (1994-09-01), Narukawa et al.
patent: 5371608 (1994-12-01), Muto et al.
patent: 5587825 (1996-12-01), Iizuka

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