DEVICE FOR FORMING RING-LIKE IMAGE
PROBLEM TO BE SOLVED: To provide a device constituted so that a longer film can be projected on a dome with a panoramic projector by considering the distortion of an image always caused when the image is projected on a flat surface in the dome. SOLUTION: This device is constituted so that a partiall...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a device constituted so that a longer film can be projected on a dome with a panoramic projector by considering the distortion of an image always caused when the image is projected on a flat surface in the dome. SOLUTION: This device is constituted so that a partially ringlike image or a ring-like image is formed at one part of a spherical projection surface 1 by a ring-like mirror 18 which can deflect luminous flux 4 for forming the partially ring-like image or the ring-like image on the projection surface 1. Besides, it is provided with a light source 10 which can emit the substantially parallel luminous flux 4, a controller 8 controlling the intensity of the luminous flux 4 and a raster scanning device 12 which is arranged on an optical path between the mirror 18 and the light source 10 and which can execute the raster scanning of the luminous flux in two directions in order to successively irradiate the pixels of the partially ring-like image or the ring-like image. |
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