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Creators/Authors contains: "Baker, Brian"

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  1. ; ; ; ; ; ; (, Optics Letters)
    We designed, fabricated, and characterized a flat multi-level diffractive lens comprised of only silicon with d i a m e t e r = 15.2 m m , focal l e n g t h = 19 m m , numerical aperture of 0.371, and operating over the long-wave infrared (LWIR) s p e c t r u m = 8 µ<#comment/> m to 14 µm. We experimentally demonstrated a field of view of 46°, depth of focus ><#comment/> 5 m m , and wavelength-averaged Strehl ratio of 0.46. All of these metrics were comparable to those of a conventional refractive lens. The active device thickness is only 8 µm, and its weight (including the silicon substrate) is less than 0.2 g. 
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