System and method for focusing an elastically deformable lens

   
   

A system and method is disclosed for focusing an elastically deformable lens by making small changes in the equatorial diameter of the lens. A plurality of micro-electro mechanical system (MEMS) microengine assemblies are coupled to the periphery of the lens. The lens is focused by exerting and relaxing radial tension in a plane generally perpendicular to the optical axis of the lens. Each microengine assembly utilizes thermal beam actuator arrays in combination with mechanical links to move a slider unit that is coupled to an aperture in the periphery of the lens. The movement of the slider unit alters the diameter of the lens to change the focus of the lens. The lens diameter may be changed by amounts as small as one micron.

Un sistema y un método es divulgado para enfocar una lente elástico deformable realizando cambios pequeños en el diámetro ecuatorial de la lente. Una pluralidad de asambleas mecánicas del microengine del sistema del micro-electro (MEMS) se junta a la periferia de la lente. La lente es enfocada ejerciendo y relajando la tensión radial en un plano generalmente perpendicular al eje óptico de la lente. Cada asamblea del microengine utiliza órdenes termales del actuador de la viga conjuntamente con acoplamientos mecánicos para mover una unidad del resbalador que se junte a una abertura en la periferia de la lente. El movimiento de la unidad del resbalador altera el diámetro de la lente para cambiar el foco de la lente. El diámetro de la lente se puede cambiar por las cantidades tan pequeñas como un micrón.

 
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