Waveguide laser illuminator incorporating a despeckler
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United States of America Patent
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Jun 2, 2020
Grant Date -
Aug 3, 2017
app pub date -
Aug 4, 2015
filing date -
Aug 24, 2011
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Abstract
There is provided an illumination device having: a laser; a waveguide including at least first and second transparent lamina; a first grating device for coupling light from the laser into a TIR path in the waveguide; a second grating device for coupling light from the TIR path out of the waveguide; and a third grating device for applying a variation of at least one of beam deflection, phase retardation or polarization rotation across the wavefronts of the TIR light. The first second and third grating devices are each sandwiched by transparent lamina.
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