LIGHTING APPARATUS
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United States of America Patent
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Issued Date -
Mar 6, 2008
app pub date -
Sep 4, 2007
filing date -
Sep 5, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In a lighting apparatus for conducting product inspection by irradiation of LED light at an improved inspection accuracy, an LED light source device for scattering lights of a plurality types of LEDs of different emission wavelengths by a light guiding member and irradiating them from a light emitting surface in the direction of the lighting optical axis is attached to a casing having a light transmitting imaging section through which an imaging optical axis extends, the light guiding member has a plurality of light guiding plates with the light emitting surface being directed to the lighting optical axis, each of the light guiding plates is mounted with LEDs at a predetermined pitch on the plane perpendicular to the light emitting surface, such that the combination of the emission wavelengths is identical for each of the rows in the direction of the lighting optical axis.
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