LIGHT GUIDE BODY FOR LIGHT EMITTING POINTER
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United States of America Patent
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Issued Date -
Mar 17, 2016
app pub date -
Mar 27, 2014
filing date -
May 17, 2013
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Abstract
A light guide body includes a light introduction member (12) and a light reflection member (11), and a side reflection surface (14) for reflecting introduced light to an opposite region which is on the opposite side across an opening (13) is formed on a side surface part of the light reflection member (11). A groove part for guiding the introduced light toward a direction of a light emitting pointer (24) is formed around the opening (13) in the light reflection member (11). The groove part includes a first groove part (P1) and a second groove part (P2) around the opening (13). The first groove part (P1) includes a plurality of grooves oriented in a direction almost orthogonal to the introduced light, and the second groove part (P2) includes a plurality of grooves having a predetermined angle relative to the grooves of the first groove part (P1).
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