Automatic focus pulse gated system

Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit

Patent

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Details

356 5, H01J 3150

Patent

active

039419991

ABSTRACT:
An improved active type of infrared viewing system is provided using pulse ated techniques which displays the complete Z (range) axis simultaneously and provides uniform image intensity at all ranges.

REFERENCES:
patent: 3682553 (1972-08-01), Kapany
patent: 3903451 (1975-09-01), Hall et al.

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