Lens structures for flux redistribution and for optical low pass filtering
AssigneeAgilent Technologies, Inc.
InventorGeorge E. Smith
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Abstract
Lens structures for flux re-distribution and for optical low pass filtering. The lens structure has a surface that includes a seamless profile, which is devoid of cusps. The surface includes a plurality convex elements and concave elements (e.g., an array of alternating elements and concave elements). The convex elements include a positive surface curvature area, and the concave elements include a negative surface curvature area. The lens structure can include a surface for producing a controlled amount of under-corrected spherical aberration and over-corrected spherical aberration.
Claims20
A lens structure comprising:
- a surface devoid of cusps that includes a seamless profile;
- wherein the surface includes a plurality of convex elements and concave elements;
- and
- wherein the convex elements include a positive surface curvature area and wherein the con cave elements include a negative surface curvature area.
A lens structure comprising:
- a plurality of cells;
- wherein each cell includes a surface that is devoid of cusps and that includes a seamless profile;
- wherein the cells includes include at least one convex element and at least one concave element;
- and
- wherein the surface produces a controlled amount of under-corrected spherical aberration and over-corrected spherical aberration.
A lens structure comprising:
- a surface that includes at least a first region for producing over-corrected spherical aberration and at least a second region for producing under-corrected spherical aberration;
- wherein the surface produces a controlled amount of under-corrected spherical aberration and over-corrected spherical aberration.
Dependencies are inferred from the claim text.