Suppression of stray light reflections in a raster output scanne

Details Suppression of stray light reflections in a raster output scanne Suppression of stray light reflections in a raster output scanne

1992-12-10

1994-12-27

Sugarman, Scott J.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359 65, 359494, G02B 2608

Patent

active

053770366

ABSTRACT:
In an overfilled ROS polygon architecture, stray reflection from facets adjacent the completely filled (illuminated) facet are neutralized by placing an optical isolator in the path of the unwanted stray reflections. In a first embodiment, the isolator comprises a linear polarizer and a quarter wave plate. In a second embodiment, the isolator comprises a liquid crystal quarter wave plate and a cholesteric liquid crystal cell.

REFERENCES:
patent: 4447723 (1984-05-01), Neumann
patent: 4941721 (1990-07-01), Banton et al.
patent: 4978185 (1990-12-01), Appel

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