Imaging devices

Details Imaging devices Imaging devices

1974-12-19

1976-03-30

Stolwein, Walter

Telegraphy

Systems

Simplex-reversing periodic

250211J, 250578, 350 35, 325342, 178 72, H04N 316

Patent

active

039476308

ABSTRACT:
Optical diodes are shown in the forms of a mechanically contacted cat whisker system and as single and multiple microscopic solid portions in an integrated solid mass, defining both the antenna and the junction, preferably as a deposit of solid layers upon a substrate, preferably as overlapping printed circuit line structures. Arrays of such junctions provide enhanced effects.
In a scanner, read-out from the junctions is shown indirectly, using an electron beam, and directly using leads connected to respective antennae. Local oscillators directing radiation upon an image disecting array, mixing in the junctions with incident radiation from the image create superheterodyne beats leading to improved levels of detection. By phase locking the local oscillator to the frequency of coherent image - illuminating radiation, and detecting phase of the beats relative to the illuminating radiation, as well as amplitude, a holographic display of the image is achieved.

REFERENCES:
patent: 3229106 (1966-01-01), De Lord et al.
patent: 3462605 (1969-08-01), Engeler
patent: 3576392 (1971-04-01), Hofstein
patent: 3649838 (1972-03-01), Phelan, Jr.
patent: 3868658 (1975-02-01), Kiemle
dees: The Microwave Journal; Vol. 9, Sept., 1966; pp. 48-55.
Hocker et al.: Applied Physics Letters; Vol. 12, No. 12; June 15, 1968; pp. 401, 402.

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