Mirror having a variable focal length

Details Mirror having a variable focal length Mirror having a variable focal length

1981-04-10

1983-12-13

Evans, F. L.

G02B 510

Patent

active

044202229

ABSTRACT:
The mirror comprises a multilayer structure, at least one of the component layers of which is made from a piezoelectric material, and electrodes for applying voltage to the multilayer structure. A free face of the multilayer structure carries the reflecting surface of the mirror. At least one of the outer faces of the mirror comprises at least one zone of curvature which is non-zero in the non-excited state of the multilayer structure.

REFERENCES:
patent: 3299368 (1967-01-01), Klebba

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