EFFICIENT OPTICAL ILLUMINATION SYSTEM AND METHOD FOR AN IMAGING READER
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United States of America Patent
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Issued Date -
Dec 24, 2015
app pub date -
Jun 23, 2014
filing date -
Jun 23, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A target to be read by image capture is illuminated with an illumination light pattern by an illuminating light assembly having an enhanced optical coupling efficiency. The assembly includes a hybrid lens component having a first lens portion centered on an optical axis, and a second total internal reflection (TIR) lens portion surrounding the first lens portion about the optical axis. Both lens portions intercept, bend and collimate illumination light emitted from a light emitting diode. The collimated light is incident on a lenslet component having an array of lenslets generally arranged in a plane that is generally perpendicular to the optical axis.
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