Importance

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Abstract

An electrostatically controllable optical device is provided, comprising:

a transmissive substrate (101);a single transmissive electrode (102) arranged on a surface of said substrate;a transmissive dielectric layer (103) arranged on said electrode; anda flexible roll-up blind (104) attached to said dielectric layer, said flexible roll-up blind comprising a flexible electrode (106) and a flexible optically functional layer (105) provided on said flexible electrode, said flexible roll-up blind having naturally a rolled configuration and being capable of unrolling in a roll-out direction in response to an electrostatic force. At least one of said transmissive electrode, said transmissive dielectric layer, said flexible electrode and said flexible optically functional layer is adapted with respect to its shape, size, and/or position relative to another one of said transmissive electrode, said transmissive dielectric layer, said flexible electrode and said flexible optically functional layer, to allow partial unrolling but prevent complete unrolling of said flexible roll-up blind.

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First Claim