Bimorph mirror provided with two piezoelectric layers...

G - Physics – 02 – B

Patent

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Details

G02B 26/08 (2006.01) G02B 5/08 (2006.01)

Patent

CA 2555806

The invention relates to a bimorph mirror comprising first (1) and second (2) layers made of a piezoelectric ceramic material and at least one electrode which enables to vary at least one curve of the mirror according at least to the electric voltage applied to piezoelectric ceramics. The inventive mirror is characterised in that the first (1) and second (2) layers are separated by a central core (5) made of a material such as glass or silicon which forms a semi-rigid beam.

L'invention est relative à un miroir bimorphe présentant une première (1) et une deuxième (2) couche en céramique piézo-électrique ainsi qu'au moins une électrode permettant de faire varier au moins une courbure du miroir en fonction d'au moins une tension électrique appliquée aux céramiques piézo- electriques. Le miroir selon l'invention est caractérisé en ce que la première (1) et la deuxième (2) couche sont séparées par une âme centrale (5), en matériau tel que du verre ou de la silice, qui forme une poutre semi-rigide.

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