Patent ID: 8256902
Filing Date: 2012-09-04
Classification: G02B,G03B,G09B

Abstract:
1. An entire-visual-field projection device, comprising: a spherical screen onto which an entire-visual-field image is projected; a pair of projection means which project the entire-visual-field image onto the screen from inside the screen and are arranged opposite each other with the center of the screen therebetween; and a double-convex light reflection means for projection which reflects luminous fluxes from the pair of projection means toward the screen and is disposed in the vicinity of the center of the screen; wherein a projection luminous flux from one of the pair of the projection means is emitted to one of the convex surfaces of the light reflection means for projection, and a projection luminous flux from the other of the pair of the projection means is emitted to the other convex surface of the light reflection means for projection, and wherein a non-reflection portion for shielding light reflectance is formed on a surface position where the luminous fluxes enter eyes of viewer when the luminous fluxes are reflected from the pair of projection means in the light reflection means for projection.