Variable reflectivity coatings with constant optical thickness and phase
AssigneeEssex Corporation
InventorRicky Nubling
Life of this patent
Estimating the term…
Abstract
A method of controlling phase on at least one of reflectance and transmission in an optic device. The optic device includes a multiple layer stack. At least one dimension of a first layer in the stack is varied in at least a first direction. At least one dimension of a second layer in the stack is varied in at least a second direction. The first direction and the second direction are substantially opposite. The stack is maintained at a substantially constant optical thickness.
Claims42
An optic device comprising:
- a multiple layer structure having a substantially constant optical thickness and comprising at least a first layer and a second layer,
- the first layer having an optical thickness variable in at least a first direction,
- the second layer having an optical thickness variable in at least a second direction, the first direction and the second direction being substantially opposite.
A method of making an optic device comprising:
- forming a multiple layer structure comprising at least a first layer and a second layer,
- varying an optical thickness of the first layer in at least a first direction,
- varying an optical thickness of the second layer in at least a second direction, the first direction and the second direction being substantially opposite,
- maintaining the multiple layer structure at a substantially constant optical thickness.
A method of controlling phase on at least one of reflectance and transmission in an optic device comprising a multiple layer structure, the method comprising:
- varying an optical thickness of at least a first layer in the multiple layer structure in at least a first direction,
- varying an optical thickness of a second layer in the multiple layer structure in at least a second direction, the first direction and the second direction being substantially opposite, and
- maintaining the multiple layer structure at a substantially constant optical thickness.
Dependencies are inferred from the claim text.