05251057 is referenced by 49 patents and cites 12 patents.

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.

Title
Multiple beam optical modulation system
Application Number
7/421226
Publication Number
5251057
Application Date
October 13, 1989
Publication Date
October 5, 1993
Inventor
Melvin E Swanberg
Claremont
CA, US
Jean Michel Guerin
Glendale
CA, US
Agent
Robert E Cunha
Assignee
Xerox Corporation
CT, US
IPC
G02B 5/30
G02F 1/29
G02F 1/11
G02F 1/01
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