Three-dimensional projection system

Details Three-dimensional projection system Three-dimensional projection system

1976-05-28

1980-06-17

Bauer, Edward S.

350 9, 350167, 350175E, G02H 122

Patent

active

042080860

ABSTRACT:
A projection system for providing a magnified image from a holographic transparency in which the transparency is illuminated from one side by a laser, and two lens are serially arranged on the other side of the transparency, the second of these lens having a focal length greater than the first one. An Arnulf afocal plate closely follows serially the second of the lens. A viewer in front of the afocal plates perceives a three-dimensional real image positioned between the viewer and the afocal plate, which image is a magnified and dimensionally correct reproduction of the image from which the hologram was originally made.

REFERENCES:
patent: 2018592 (1935-10-01), Arnulf
patent: 2351034 (1944-06-01), Gabor
patent: 3632181 (1972-01-01), Lee

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