Patent ID: 9680276
Date: 2017-06-13
CPC Classifications: F41G,G02B,H01L,H01S

Claim:
1. An illuminator comprising: a short wave infrared (SWIR) laser; a fast-axis lens collimator optically coupled to the laser for collimating a beam emitted by the laser; a first beam shaping diffuser optically coupled to the lens collimator to diffuse a diverged beam produced by the lens collimator, wherein the first beam shaping diffuser is a circular beam shaping diffuser; a second beam shaping diffuser optically coupled to the first beam shaping diffuser to further diffuse a diffused beam produced by the first beam shaping diffuser, wherein the second beam shaping diffuser is configured to create an illumination field with a Gaussian distribution centered in the horizontal plane of the illumination field; and a bandpass filter optically connected to the second beam shaping diffuser configured to filter the emissions of a further diffused beam produced by the second beam shaping diffuser.