Light irradiator, image scanner, and image forming apparatus
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United States of America Patent
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Jul 15, 2014
Grant Date -
May 30, 2013
app pub date -
Nov 16, 2012
filing date -
Nov 30, 2011
priority date (Note) -
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Abstract
A light irradiator including multiple point light sources arranged in a straight line, a light-transmissive light guiding member provided in front of the point light sources in an emission direction of beams of light emitted from the point light sources, the light guiding member guiding the beams of light in a predetermined direction toward a surface to be irradiated; and two or more protrusions protruding toward the point light sources, provided on a light entering surface of the light guiding member and arranged in the same direction as the point light sources. The light guiding member and the point light sources are positioned such that a distance between the protrusions provided to the light guiding member and irradiation surfaces of the point light sources is equal at two positions.
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