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US 5,619,366 AGranted
Controllable surface filter
AssigneeTexas Instruments Incorporated
InventorsCharles M. Rhoads, Gary Frazier, Richard G. Hoffman, II, Oren B. Kesler, Daniel J. Ryan
Life of this patent
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Abstract
Generally and in one form of the invention this is a periodic surface filter comprising at least one element at a surface of the filter and electronic controls to change the optical characteristics of the element. Other methods and devices are disclosed.
Claims14
A tunable surface filter comprising:
- a. at least one element at a surface of said filter;
- and
- b. electronic control to change the effective optical length of said element.
Dependencies are inferred from the claim text.