A filter for a display system is provided which includes a fluid chamber having a selectively moveable filtering fluid, plural electrodes being coupled with the fluid chamber to accommodate establishment of an electric field whereby the filtering fluid may be selectively positioned in an optical path.

 
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< Photographic apparatus and lens barrel

< Optical module

> Optical pickup actuator

> Iterative approximation environments for modeling the evolution of an image propagating through a physical medium in restoration and other applications

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