Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Reexamination Certificate
2003-10-14
2009-06-30
Haskins, Twyler L (Department: 2625)
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
C359S201100, C359S206100, C359S221200, C359S662000
Reexamination Certificate
active
07554710
ABSTRACT:
Disclosed is a two-dimensional scanning apparatus which includes a deflecting unit for deflecting a light beam from a light source two-dimensionally, and a scanning optical system for directing the light beam deflected by the deflecting unit onto a surface to be scanned. The scanning optical system includes an optical surface which is tilted at an angle larger than a maximum angle of view relative to a central axis of a two-dimensional deflection range of the light beam deflected by the deflecting unit. The two-dimensional scanning apparatus is capable of preferably and readily correcting distortion including TV distortion which is likely to appear when a light beam is two-dimensionally deflected and scanned to from a two-dimensional image.
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Beckley Jonathan R
Canon Kabushiki Kaisha
Haskins Twyler L
Rossi Kimms & McDowell LLP
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