Polarizing films used for optical systems and three-dimensional

Details Polarizing films used for optical systems and three-dimensional Polarizing films used for optical systems and three-dimensional

1995-07-24

1998-02-10

Shafer, Ricky D.

Optical: systems and elements

Stereoscopic

With right and left channel discriminator

359464, 359459, 348 58, 353 8, G02B 2726

Patent

active

057175225

ABSTRACT:
In an apparatus for displaying a three-dimensional image, an image display and a polarizing filter having an axis of easy transmission in a predetermined direction or an optically-active film having an optically-active portion at a predetermined position are combined together in a predetermined positional relationship, thereby easily displaying an image on the image display when a flat original image is prepared for forming the three-dimensional image and simplifying the structure of the apparatus with a reduced manufacturing cost. The apparatus for three-dimensionally displaying a planar image recorded on a polarizing film comprises a monochrome liquid crystal television screen which functions as a backlight source, a convex Fresnel lens for magnifying an image of the backlight source, an infrared illumination light source for illuminating a half of the face of an observer with infrared radiation, an infrared camera for capturing the illuminated image of the observer, and an interlaced-image synthesizing circuit which forms a binary-coded image obtained by the infrared television camera and its reversed image and interlaces the binary-coded image and reversed image to synthesize a signal.

REFERENCES:
patent: 4649425 (1987-03-01), Pund
patent: 5050961 (1991-09-01), Venolia
patent: 5113285 (1992-05-01), Franklin et al.
patent: 5132839 (1992-07-01), Travis
patent: 5264964 (1993-11-01), Faris
patent: 5327285 (1994-07-01), Faris
patent: 5537144 (1996-07-01), Faris

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