Patent
1989-12-26
1991-03-26
Henry, Jon W.
350133, G02B 2704, G02B 2722, G02B 2732
Patent
active
050023632
ABSTRACT:
Disclosed herein is a steroscopic sheet which comprises one sheet, a lens portion provided at one end portion of the sheet, the lens portion comprising a pair of lenses spaced from each other by the interval of a person's eyes in parallel to the end edge of the one end portion of the sheet, and an image portion provided at the other end portion of the sheet, the image portion comprising a pair of stereoscopic images arranged side by side in parallel to the end edge of the other end portion of the sheet, the lens portion and the image portion being so arranged that the lens and image portions are capable of being erected, with the focal distance of the lenses. Each of the lenses may be adhered to a stepped portion formed by a first through-hole provided in the one end portion and a second through-hole provided in a backing sheet attached to the back side of the one end portion of the sheet. A mark for accommodation of focus and angle of convergence may be provided on the lower side of each of the images of the image portion.
REFERENCES:
patent: 174893 (1876-03-01), Bierstadt
patent: 2283777 (1942-05-01), Wendling
patent: 2724991 (1955-11-01), Levine
patent: 2868071 (1959-01-01), Kiehl
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