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US 4,359,373 AGranted
Method of formation of a blazed grating
AssigneeRCA Corporation
InventorJacob M. Hammer
Life of this patent
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Abstract
A method of forming a blazed grating in a surface of a body comprising the steps of forming a patterned layer having a grating therein overlying the surface of the body, non-uniformly coating the surface of the grating with a masking layer and exposing the non-uniformly coated surface to a material removal means which preferentially removes the patterned layer where it is uncoated and the surface of the body producing an asymmetric groove pattern in the surface of the body.
Claims5
A method of forming a blazed grating in a surface of a body comprising the steps of:
- forming a patterned layer having a grating therein on the surface of the body;
- coating the surface of the grating non-uniformly with a masking layer;
- and
- exposing the non-uniformly coated surface to a material removal means whereby the masking layer, the patterned layer and a portion of the body are non-uniformly removed thereby forming a blazed grating in the surface of the body.
1 more element
Dependencies are inferred from the claim text.