Virtual image display system
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United States of America Patent
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Oct 7, 2014
Grant Date -
Aug 16, 2012
app pub date -
Jan 23, 2012
filing date -
Feb 16, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A thickness of a tapered part provided at the deeper side (−X side) in a light guide direction of a light transmission member is smaller toward the deeper side, and thus, a reflection angle of ghost light that has passed through a fourth reflection surface provided with a half mirror layer and reached the light transmission member gradually becomes smaller within the tapered part and no longer satisfies a total reflection condition, and the light is ejected to the outside in the position diverging from an eye of an observer. That is, the tapered part may prevent the ghost light from reaching the eye and good see-through observation can be realized.
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