Lighting apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 7, 2000
Issued Date -
N/A
app pub date -
Jul 23, 1997
filing date -
Sep 9, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A lighting apparatus is provided which illuminates a two dimensional data reading area in a data reader and which includes a plurality of light sources which are arranged along one pair of opposing sides of the two dimensional data reading area. An optical axis for each of the light sources is inclined at a predetermined inclination angle with respect to a line that is normal to a reference surface of the data reading area. The optical axes of the light rays emitted from the light sources onto the reference surface are spaced from the pair of sides of the two dimensional data reading area, at a distance within a range of 0.1 to 0.34 times the length of the other pair of opposing sides of the two dimensional data reading area.
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Family
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Cited Art Landscape
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