Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-12-16
1999-02-02
Spyrou, Cassandra C.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359203, 359216, 347261, G02B 2608
Patent
active
058672982
ABSTRACT:
A dual format pre-objective scanner (10), for use in a laser printer, having an incident beam (22) from input optics (12) incident on a polygon tower (14) comprised of a first polygon (20) having a first diameter and first number of facets and a second polygon (30) having a second diameter and second number of facets, rotating about an axis (42) common to both first and second polygon. The polygon tower (14) is moved in a vertical direction so that the incident light is directed in a plane approximately perpendicular to the axis rotation of the first and second polygon, at either the first polygon (20) or the second polygon (30). The polygon tower (14) is also moved in a lateral direction approximately perpendicular to the axis (42) of rotation of the polygon tower (14). To change size and formats, the polygon tower (14) is moved simultaneously both vertically and laterally so that incident beams on the facets of the first polygon (20) become incident on the facets of the second polygon (30) at approximately the same distance from a scan lens (16).
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Harrigan Michael E.
Narayan Badhri
Summers Drew D.
Blish Nelson Adrian
Eastman Kodak Company
Novais David A.
Schuberg Darren E.
Spyrou Cassandra C.
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