Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1998-12-14
2000-04-18
Spyrou, Cassandra
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359207, 359216, 347256, G02B 2608
Patent
active
060522127
ABSTRACT:
A method of correcting a scanning device's reflective face's pyramid error as well as coma in the cross scan direction of an optical scanning system comprising the steps of: focusing a beam of light to a spot in the cross scan axis in the vicinity of the scanning device's reflective face with a first cylinder mirror which is tilted at an angle to produce a fixed, known amount of coma in the spot focused in the cross scan axis; and imaging the location of the reflective face, and thus reimaging the spot, to a second image position with a second cylinder mirror which is tilted at a second angle, the second cylinder mirror imaging the spot with a fixed and known amount of coma in the cross scan axis which is approximately equal to and opposite in sign to the first fixed, known amount of coma.
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Boutsikaris Leo
Eastman Kodak Company
Noval William F.
Spyrou Cassandra
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