Variable focus system
AssigneePC Mirage, LLC
InventorPeter E. Raber
Life of this patent
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Abstract
A variable focus system that includes an electrovariable optic (EVO) and a controller operatively configured for changing the focal configuration of the EVO. The EVO includes a plurality of movable optical elements that may be moved substantially in unison with one another so as to change either the focal length of the EVO, the direction of the focal axis of the EVO, or both, depending upon the needs of a particular application. The variable focus system may be used in conjunction with an image source to construct a 3D floating image projector that projects a series of 2D image slices of a 3D image onto corresponding respective image planes in succession rapidly enough that a 3D floating image is perceived by a viewer.
Claims11
A variable focus system, comprising:
- (a) an optic that includes a plurality of movable electrovariable optical elements;
- and
- (b) a controller coupled to said optic, said controller generating at least a first signal and a second signal, said first signal causing at least some of said plurality of movable electrovariable optical elements to move so as to provide said optic with a first focal length and said second signal causing at least some of said plurality of movable electrovariable optical elements to move so as to provide said optic with a second focal length different from said first focal length.
Dependencies are inferred from the claim text.