John L Rodgers

US Patent:

56107510, Mar 11, 1997

Filed:

Nov 14, 1995

Appl. No.:

8/557489

Inventors:

Michael N. Sweeney - Lake Orion MI
Brian L. Tiffany - Rochester Hills MI
Thomas J. Vettese - West Bloomfield MI
Mark S. Maiberger - New Baltimore MI
John M. Rodgers - Pasadena CA

Assignee:

Speedring Systems, Inc. - Rochester Hills MI

International Classification:

G02B 2608

US Classification:

359197

Abstract:

An optical scanning device, for reflecting a light beam produced by a laser light source, having an entrance window; a rotatable scan optic having a reflective surface and a spherical exit window; the reflective surface of the rotatable scan optic positioned adjacent the entrance window and central to the spherical exit window such that the light beam successively encounters the entrance window, the reflective surface of the rotatable scan optic, and the spherical exit window surrounding the reflective surface of the rotatable scan optic, the light beam encountering and passing through the spherical exit window after being reflected away from the rotatable scan optic; the reflective surface of the rotatable scan optic circumscribed by a chamber defined by the entrance window, the rotatable scan optic device, and the spherical exit window.