Moving screen projection technique for volumetric three-dimensional display
OwnerChe-Chih Tsaoinventor
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Abstract
This invention relates generally to new and improved approaches for displaying volumnetric three-dimensional (3D) images. The basic idea features new optical-mechanical mechanisms enabling creation of volumetric 3D images by successive projection of whole frames of 2D images. This new method projects a series of frames of 2D images, through an optical-mechanical image delivery system, onto a translucent screen which moves periodically and sweeps a space. As viewed from outside the space, the series of 2D images distributed in the space form a volumetric image because of the after-image effect of human eyes. Many viewers can walk around the space and see the image from omni-directions simultaneously without wearing any kind of glasses.
Claims18
An apparatus for displaying 3D volumetric images comprises (1) screen revolving about an axis;
- (2) an image delivery mechanism comprising a multi-mirror relay reflector revolving at 1/2 the speed of said screen, a light shutting means, and a motion mechanism translating the multi-mirror reflector as it rotates and thereby having said axis always parallel to and passing through one of the reflective surfaces of the multi-mirror reflector;
- (3) an image projector.
A method for dismaying 3D volumetric images, comprises the steps of:
- (1) displaying in sequence a set of 2D image frames on an image generating panel;
- (2) revolving a screen rapidly about a first axis and thereby defining a display space;
- (3) rotating a multi-mirror reflector about a second axis, at a speed 1/2 of the revolving speed of said screen;
- (4) projecting in sequence said 2D image frames, through said multi-mirror reflector, onto said screen.
A method for displaying 3D volumetric images, comprises the steps of.
- (1) displaying in sequence a set of 2D image frames on an image generating panel;
- (2) reciprocating a screen rapidly and thereby defining a display space;
- (3) projecting in sequence said 2D image frames, through a reciprocating optical means, onto said screen;
- said moving optical means maintaining the size and focus of the projected image frames invariant and the orientation of the projected image frame in synchronization with the moving screen.
Dependencies are inferred from the claim text.