Lens with an extended range of focus

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United States of America Patent

PATENT NO 9703018
SERIAL NO

14118539

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Abstract

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The invention relates to a lens which has an extended range of focus, wherein the lens consists of a solid material, the optical surfaces of the lens are transparent and the lens has a focal power distribution. According to the invention, the focal power distribution FG of the lens (1), in relation to a plane perpendicular to the optical axis (10), changes as a function of the radial height r and of the azimuth angle phi of the aperture between a base value of the focal power FL not equal to zero and a maximum value FSmax. Hence, the focal power distribution emerges as

description='In-line Formulae' end='lead'FG(r,phi)=FL+FS(r,phi),description='In-line Formulae' end='tail'

with the spiral focal power component

description='In-line Formulae' end='lead'FS(r,phi)=FSmax(r)*w(phi),description='In-line Formulae' end='tail'

where FSmax(r) depends nonlinearly on the radius and w(phi) is a factor for the focal power component with a spiral profile.

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Patent Owner(s)

Patent OwnerAddress
CARL ZEISS AGCARL-ZEISS-STRASSE 22 OBERKOCHEN 73447

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dobschal, Hans-Jürgen Kleinromstedt, DE 8 118

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