Ring-shaped light-conducting apparatus with uniform luminance
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United States of America Patent
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Apr 11, 2017
Grant Date -
Sep 10, 2015
app pub date -
Oct 10, 2013
filing date -
Oct 15, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A light-conducting apparatus includes a light source, a light-conducting member and a light-reflecting structure. The light-conducting member includes a ring-shaped portion, a light-receiving surface and a radially outwardly bulged portion. The ring-shaped portion extends continuously over an entire circumference of the ring-shaped portion in a circumferential direction of the ring-shaped portion. The light-receiving surface causes light from the light source to enter the light-conducting member through the light-receiving surface. The radially outwardly bulged portion is bulged radially outwardly from the ring-shaped portion and causes the light having entered the light-conducting member through the light-receiving surface to enter the ring-shaped portion in one direction in the circumferential direction of the ring-shaped portion. The light-reflecting structure reflects a portion of the light having entered the light-conducting member through the light-receiving surface and causes the reflected light to enter the ring-shaped portion in a direction opposite to the one direction in the circumferential direction of the ring-shaped portion.
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