Optical scanning method and system and method for correcting...

Details Optical scanning method and system and method for correcting... Optical scanning method and system and method for correcting...

2006-04-25

2008-12-16

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

Reexamination Certificate

active

07466466

ABSTRACT:
An optical scanning method and system and method for correcting optical aberrations introduced into the system by a beam deflector are provided. The optical scanning method and system utilize a tilt-corrected, off-axis beam deflector. The scanning system includes an off-axis acousto-optic beam deflector with a walk-off angle operated at high speed and post-scan optics used to focus the scanned beam. A tilted in-scan focus plane resulting from beam width variation through the scan and the cylindrical lens effect is corrected with one or more tilted lens elements within the post-scan optical train.

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