Optical switching device comprising switchable hydrides

Details Optical switching device comprising switchable hydrides Optical switching device comprising switchable hydrides

1997-08-20

1999-05-18

Epps, Georgia

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359265, G02F1/153;1/15

Patent

active

059055901

ABSTRACT:
A description is given of a switching device (1) comprising a transparent substrate (3), a switching film (5) including hydrides of gadolinium or other trivalent metal, and magnesium, covered with a palladium layer (7). By exchange of hydrogen, the switching film can be reversibly switched from a transparent state to a mirror-like state with zero transmission via an intermediate black absorbing state. The conversion between both states is reversible, and this phenomenon can be used, for example, in an optical switching element or sun roof.

REFERENCES:
patent: 5635729 (1997-06-01), Griessen et al.
patent: 5740287 (1998-04-01), Scalora et al.

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