The Boeing Company

Hrl Laboratories, LLC

Don F Weston

Daniel Yap

Rajesh D Rajavel

Hasan Sharifi

A wavelength-selective optical diffuser comprising a substrate of a first material having opposite first and second surfaces, wherein said first material is transparent to a first wavelength &#x3bb;and a second wavelength &#x3bb;, with &#x3bb;&#x3e;4&#x3bb;; at least a first surface of said substrate having a surface relief such that a beam of light having the first wavelength &#x3bb;is diffused, with a rms phase delay S&#x3e;&#x3c0;/4, when traversing said substrate; and a beam of light having the second wavelength &#x3bb;is minimally diffused, with a rms phase delay S&#x3c;&#x3c0;/4, when traversing said substrate.

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Port Hueneme, CA, United States of America

Don F Weston