Optical guide with superimposed guidance elements and manufacturing method
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United States of America Patent
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Sep 6, 2016
Grant Date -
Nov 13, 2014
app pub date -
Dec 6, 2012
filing date -
Dec 13, 2011
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Abstract
An optical guide comprises an injection zone intended to inject into the optical guide a light signal and an extraction zone intended to provide the light signal after transport by the optical guide. The optical guide comprises, in a superposed manner, at least two guidance elements. In a zone situated between the injection zone and the extraction zone, the guidance elements are partially separated from one another by a semi-reflective coating of length, in the direction or propagation of the light signal in the optical guide, dependent on a minimum angle of incidence of the light signal and on the thickness of at least one of the guidance elements that the semi-reflective coating separates.
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