Light scanner with cylindrical lenses
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United States of America Patent
Stats
-
Sep 23, 2003
Grant Date -
Nov 8, 2001
app pub date -
Feb 22, 2001
filing date -
Mar 31, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A scrolling scan optical band scanner is provided having a scrolling scan optic with a scan function that inherently deviates from an ideal imaging function over wide apertures. Compensation optics are provided to correct the scrolling scan optic performance to provide accurate imaging over a wide aperture. The compensation optics and the scrolling scan optic together accurately scroll the input pattern to an output pattern according to the formula: x.sub.o (t)/X=(t/T+x.sub.i /X) modulo 1, with X being the total height of input and output beam, x.sub.i being the ray height in the input beam, x.sub.o being the corresponding ray height in the output beam as a function of time, T being the frame period, and t being the time, and said scroll patterns remains telecentric even where X is large with respect to a physical size of the scanning optic system.
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Cited Art Landscape
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