Integrated optical illumination reference source
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United States of America Patent
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Aug 25, 2015
Grant Date -
Feb 19, 2015
app pub date -
Aug 19, 2013
filing date -
Aug 19, 2013
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Abstract
An integrated illumination reference source for generating an illumination reference signal may include an optical element having a first outer surface and a second outer surface, such that the first and the second outer surface are substantially opposing. The optical element receives an incident optical signal at the first outer surface and projects the incident optical signal from the second outer surface onto a surface. A reflective device that is located on a region of the second outer surface is offset from an optical axis of the optical element. The reflective device includes a reflective surface that reflects a portion of the incident optical signal from the second outer surface back through the first outer surface, whereby the reflective surface of the reflective device is encapsulated between the first outer surface and the second outer surface of the optical element.
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