Theatre in the round projection apparatus and method
OwnerDavid A. Pringleinventor
Life of this patent
Estimating the term…
Abstract
A projection system for a theatre in the round having a plurality of moving image projectors. The projectors can be either film projectors or television-type projectors. They project in an essentially cylindrical surface which is viewed by people at a viewing location. A lens is associated with each moving image projector, the lens having an optical axis located at or above a top edge of the viewable portion of the cylindrical surface. A source of moving images is associated with each lens, the center of which source is located above the optical axis of the associated lens such that moving images are projected by each lens downwardly toward a portion of the essentially cylindrical surface in an essentially distortion-free manner.
Claims11
A projection system for a theatre in the round having a plurality of moving image projectors and an essentially cylindrical surface for display of projected moving images, said projection system comprising:
- (a) lenses associated with said moving image projectors, the lenses each having an optical axis located at or above a top edge of the moving images projected on said essentially cylindrical surface;
- and
- (b) a source of moving images associated with each moving image projector and with each lens, the center of which source is located offset from the optical axis of its associated lens such that moving images are projected by each lens downwardly towards said essentially cylindrical surface in an essentially distortion-free manner.
A method of projecting moving images on a generally vertical cylindrical surface comprising the steps of:
- (a) locating a plurality of lenses such that their optical axes are located in essentially a common plane above said cylindrical surface;
- and
- (b) projecting moving images from projector and through each lens, the optical axis of the projected moving images impinging each lens being offset from the optical axis of its associated lens such that the light from the projector passes through the lens and has a downward component when it falls on said cylindrical surface.
Dependencies are inferred from the claim text.