PROJECTION DEVICE FOR INCREASING LIGHT-TRANSMITTING EFFICIENCY
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United States of America Patent
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Issued Date -
May 22, 2014
app pub date -
Jan 14, 2013
filing date -
Nov 16, 2012
priority date (Note) -
Abandoned
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Abstract
A projection device for increasing light-transmitting efficiency includes a light-emitting unit, a light-guiding unit, an image display module and an image projection unit. The light-emitting unit includes a first light-emitting module for generating a first predetermined light source, a second light-emitting module for generating a second predetermined light source, and a third light-emitting module for generating a third predetermined light source. The light-guiding unit includes at least one photonic crystal fiber structure having a first light input terminal for receiving the first predetermined light source, a second light input terminal for receiving the second predetermined light source, a third light input terminal for receiving the third predetermined light source, and a light output terminal. The image display module is corresponding and adjacent to the light output terminal. The image projection unit includes at least one projection lens corresponding and adjacent to the image display module.
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