Imaging apparatus for transverse electrode electro-optic tunable filter
US4494827A · kind A · utility
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Key dates
| Filing date | Oct 20, 1982 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Oct 20, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging apparatus which permits the use of a transverse electrode electro-optic tunable filter (TEOTF), despite its obscured aperture, to produce a high quality image. The imaging apparatus includes a suitable conventional anamorphic input optical system in combination with a stacked plurality of TEOTFs in which the platelet of each TEOTF is made of an electro-optic material of a known index of refraction (such as CdS of an index of .about.2.4), and is clad between its surface and its electrodes with a material having a lower index of refraction than the platelet material (such as SiO.sub.2 of an index of .about.1.5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.