Shapiro, Gabor and Rosenberger, PLLC
Fresnel lens and optical device
A refractive Fresnel lens used for an optical system including an image plane, which includes a plurality of zone lens surfaces disposed concentrically and a plurality of side wall surfaces each formed between adjacent zone lens surfaces, is characterized in that the side wall surfaces are modulated so as to spatially spread in the image plane noise light due to reflection and/or refraction at the side wall surfaces.
Essilor International (Compagnie Generale D'Optique) Nikon Corporation
G G G G
G02C G02B G02C G02C
inventional inventional inventional additional
Alain Toru
Goulet Fujii