Multiple beam optical modulation system

Details Multiple beam optical modulation system Multiple beam optical modulation system

1989-10-13

1993-10-05

Arnold, Bruce Y.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359250, 359256, 359259, 359276, 359286, 359305, 358296, 346108, G02F 101, G02F 111, G02F 129, G02B 530

Patent

active

052510573

ABSTRACT:
In a raster output scanner, a system for using one original beam and one facet of a rotating polygon to generate two consecutive scan lines. The original beam is first separated into two beams in a beam splitter. The resultant beams are polarized ninety degrees apart, and directed to the modulator. The beams are a sufficient distance apart so that the A/O modulator can modulate each beam with a minimum of crosstalk. The output beams are then brought together to within one scan line separation by a beam recombiner, which is a reversed beam splitter. The beams can be brought together to this close proximity without optical interference because the beams are plarized ninety degrees apart.

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Ammann; "Modification of Devices Normally Operating Between Input and Output Polarizers to Allow Their Use With Arbitrarily Polarized Light"; Journal of the Optical Society of America; vol. 55; No. 4; 1965, pp. 412-417

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