Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1998-06-11
2000-11-28
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347258, B41J 1514
Patent
active
061542458
ABSTRACT:
An optical element which is a resinous optical element has optical surfaces longitudinal in a main scanning direction. A shape in the main-scanning direction of an image-ineffective portion of at least one optical surface out of image-effective portions and image-ineffective portions of the both optical surfaces of the optical element includes a shape formed by adding a spline function to a function representing a shape in the main-scanning direction of the image effective portion. Thicknesses in the optical-axis direction in the image-ineffective portions are set by addition of the spline function.
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Canon Kabushiki Kaisha
Le N.
Nguyen Lamson D.
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