05196957 is referenced by 18 patents and cites 85 patents.

A scanner includes a light source for producing a light beam and a multifaceted polygon for directing the light beam to a spot on a surface to be scanned, such as at the surface of a photoreceptor or a document to be read, that is located at a predetermined location relative to the polygon and for moving the spot across the surface along a scan line or predetermined length. The scanner also includes a post-facet lens system with first and second elements configured to compensate for field curvature and wobble without compensating for scanner non-linearity. They are composed of plastic, the surfaces of the elements having curvature in both the scan plane and the cross-scan plane as well as less magnification than existing post-facet lens systems.

Title
Laser scanner with post-facet lens system
Application Number
496459
Publication Number
5196957
Application Date
April 3, 1990
Publication Date
March 23, 1993
Inventor
Harry P Brueggemann
San Marino
CA, US
Agent
Matthew F Jodziewicz
Assignee
Olive Tree Technology
CA, US
IPC
G02B 7/02
G02B 26/08
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