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US 8,798,426 B2Granted
Planar waveguide prism lens
AssigneeInternational Business Machines Corporation
InventorDouglas M. Gill
Life of this patent
Estimating the term…
Abstract
An optical waveguide system includes a substrate, a cladding layer arranged on the substrate, a core layer arranged on the cladding layer, a lens patterned in the core material, and a prism patterned in the core material, the prism arranged adjacent to the lens.
Claims4
An optical waveguide system comprising:
- a substrate;
- a cladding layer arranged on the substrate;
- a core layer arranged on the cladding layer;
- and
- a Fresnel lens-prism patterned in the core material, the Fresnel lens-prism comprising a first surface having a profile substantially defined by a subtraction of a floor function of yLP1 from yLP1, where yLP1=yL1+yP1 where yL1=a1x2+b1 and yP1=m1x+c1 where a1, b1, m1, and c1 are constants;
- wherein the first surface is asymmetrical about a central lens axis of the Fresnel lens-prism, such that the Fresnel lens-prism is operative to both focus an incident light beam and to refract the incident light beam to a point that is off the central lens axis of the Fresnel lens-prism.
3 more elements
Dependencies are inferred from the claim text.