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US 2019/0056536 A1Published application
Fresnel lens array with improved off-axis optical efficiency
AssigneeHoneywell International Inc.
InventorMark C. Buckley
Life of this patent
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Abstract
Fresnel lens arrays, devices, systems and methods of forming them are described herein. One array includes a Fresnel lens array, having a first portion including one or more defined areas of one or more Fresnel lenses, and a second portion including a first section that has its optical center located in a second section that is vertically above or below the first section and wherein each section is formed from a defined area of the one or more Fresnel lenses.
Claims20
A Fresnel lens array, comprising:
- a first portion including one or more defined areas of one or more Fresnel lenses;
- and
- a second portion including a first section that has its optical center located in a second section that is vertically above or below the first section and wherein each section is formed from a defined area of the one or more Fresnel lenses.
A Fresnel lens array, comprising;
- a center portion including one or more defined areas of one or more Fresnel lenses;
- a left portion including a first section that has its optical center located in a second section that is vertically above or below the first section and wherein each section is formed from a defined area of the one or more Fresnel lenses;
- a right portion including a first section that has its optical center located in a second section that is vertically above or below the first section and wherein each section is formed from a defined area of the one or more Fresnel lenses.
A Fresnel lens array, comprising:
- a center portion including one or more defined areas of a Fresnel lens having a first focal length;
- a first inner portion including one or more defined areas of a Fresnel lens having a second focal length;
- a second inner portion including one or more defined areas of a Fresnel lens having a third focal length and, wherein the second inner portion contains two or more vertically stacked elements and wherein a first stacked element is adjacent to one side of second vertical stacked element while the optical center of the second stacked element is located between the first stacked element and its optical center;
- and
- an outer portion including one or more defined areas of a Fresnel lens having a fourth focal length.
2 more elements
Dependencies are inferred from the claim text.