Compact ros imaging system

Details Compact ros imaging system Compact ros imaging system

1993-08-02

1994-08-30

Ben, Loha

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359217, 359218, 359859, 250236, G02B 2608

Patent

active

053433262

ABSTRACT:
The pre-polygon scanning path length of a raster output scanning system is reduced by replacing a required cylinder lens, or lenses, with two cylindrical mirrors. One mirror with a negative, concave surface and a second positive cylindrical mirror. The first mirror directs the light beam to the second mirror. The second mirror directs the light onto the facets of a rotating polygon to form a focused beam in the vertical axis of the polygon. The function of the two cylindrical mirrors is to act as a telephoto lens to properly focus the image of the laser at the polygon facet while reducing the total pre-polygon path length.

REFERENCES:
patent: 3706484 (1972-12-01), Doi et al.
patent: 3750189 (1973-07-01), Fleischer
patent: 4704521 (1987-11-01), Loy
patent: 4912321 (1990-03-01), Cooper
patent: 4941721 (1990-07-01), Banton et al.
patent: 5142403 (1992-08-01), Ossman

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