Optical: systems and elements – Relief illusion
Patent
1991-05-13
1992-09-01
Henry, Jon W.
Optical: systems and elements
Relief illusion
354 75, 354202, 354295, G02B 2727, G02B 2710, G03C 908
Patent
active
051444828
ABSTRACT:
A method and apparatus for viewing two dimensional images with a three dimensional effect utilizes a stack of closely spaced, thin plates, producing a multiple interferometer effect via inter and intra plate reflections between the plates. A conventional two dimensional image, such as a print or a back-lighted transparency or a video screen may be viewed through the stack of plates, so as to give an appearance and attributes of three dimensions, via the multiple interferometer effect. In a second embodiment, dedicated images may be produced by photographing or videotaping or otherwise recording images through the stack of plates. When such a dedicated image is later viewed through the stack of plates, a further enhanced three dimensional effect is observed. In preferred embodiments the stack of plates include about 10 to 100 thin plates, in closely and evenly spaced relationship.
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patent: 3970361 (1976-07-01), DiMatteo et al.
patent: 4309074 (1982-01-01), Granieri
patent: 4671625 (1987-06-01), Noble
patent: 4747665 (1988-05-01), O'Brien
Freiburger Thomas M.
Henry Jon W.
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