Patent ID: 8559090
Filing Date: 2013-10-15
Classification: B32B,G01J,G02B,G02F

Abstract:
1. A tunable optical filter comprising: an electro-optic ceramic substrate having first and second parallel surfaces; first and second end substrates arranged on either side of said electro-optic ceramic substrate, each end substrate having an inner parallel surface arranged toward said electro-optic ceramic substrate and an outer parallel surface arranged away from said electro-optic ceramic substrate, said inner parallel surface covered by an electrode layer and a reflecting layer; and a soft adhesive attaching said electro-optic ceramic substrate to said first and second end substrates at discrete locations around a periphery of said electro-optic ceramic substrate, said adhesive having a consistency so as to avoid stress on said electro-optic ceramic substrate; whereby a voltage imposed on said electro-optic ceramic substrate by said electrode layers on said inner parallel surfaces of said first and second end substrates effectively controls an optical distance between said reflecting layers on said inner parallel surfaces of said first and second end substrates.