Optical data projection device

Optics: image projectors – Unitary plural refracting surfaces

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353122, 350 35, G03B 2114

Patent

active

039471896

ABSTRACT:
An optical device for concentrating in a plane a radiation modulated by an object, carrying data. It comprises a mask splitting an incident beam into a plurality of elementary beams, and two stigmatic systems, the first of which for focussing and the second for converging the elementary beams into a predetermined zone, which is the image of the source of the incident beam; the modulating object comprises elementary zones bearing said data, these zones being arranged in the path of the elementary beams.

REFERENCES:
patent: 2186123 (1940-01-01), Rautsch
patent: 3437804 (1969-04-01), Schaefer
patent: 3515452 (1970-06-01), Pole
patent: 3658414 (1972-04-01), Fukushima
patent: 3692380 (1972-09-01), Inagaki
patent: 3785736 (1974-01-01), Spitz
patent: 3838904 (1974-10-01), Takeda

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