Defocusing polymer attenuator

Details Defocusing polymer attenuator Defocusing polymer attenuator

G - Physics

02

B

G02B 26/02 (2006.01) G02B 6/122 (2006.01) G02B 6/125 (2006.01) G02B 6/26 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) G02B 6/35 (2006.01) G02F 1/01 (2006.01) G02F 1/31 (2006.01) G02F 1/313 (2006.01) G02B 6/12 (2006.01) G02F 1/065 (2006.01)

Patent

CA 2307249

An optical attenuator in the form of a polymer having the property of variably defocusing a beam of light is disclosed. The optical attenuator includes a variably and reversibly deformable lens inserted in the path of a beam of light and a control means capable of controllably deforms the deformable lens such that the focal length of the lens is varied. The deformation of the lens ranges between an absence of deformation (infinite focal length) where the beam of light passing therethrough is not altered by the lens, to a maximum deformation where the beam of light is maximally attenuated (the smallest focal length). Moreover, the change in the focus position attenuates the beam of light without creating any polarization dependence loss.

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