US Patent No. 10,194,100

GLARE SUPPRESSION THROUGH FOG BY OPTICAL PHASE CONJUGATION ASSISTED ACTIVE CANCELLATION


Patent No. 10,194,100
Issue Date January 29, 2019
Title Glare Suppression Through Fog By Optical Phase Conjugation Assisted Active Cancellation
Inventorship Edward H. Zhou, Pasadena, CA (US)
Joshua Brake, Pasadena, CA (US)
Changhuei Yang, South Pasadena, CA (US)
Assignee CALIFORNIA INSTITUTE OF TECHNOLOGY, Pasadena, CA (US)

Claim of US Patent No. 10,194,100

10. An imaging apparatus, comprising:one or more sensor pixels receiving backscattered radiation and imaging radiation when electromagnetic radiation irradiates a scattering medium and an object behind the scattering medium, wherein:
the scattering medium backscatters a first portion of the electromagnetic radiation forming the backscattered radiation; and
the object reflects a second portion of the electromagnetic radiation forming the imaging radiation;
one or more modulators electromagnetically coupled to the one or more sensor pixels, one of the modulators digitally adjusting a phase of reference electromagnetic radiation and transmitting the reference electromagnetic radiation onto the one or more sensor pixels; and
a camera lens focusing the reference electromagnetic radiation, the backscattered radiation, and the imaging radiation onto the one or more sensor pixels, wherein the reference electromagnetic radiation destructively interferes with the backscattered radiation while the camera lens images the object on the one or more sensor pixels using the imaging radiation.