Semiactive night viewing system

Details Semiactive night viewing system Semiactive night viewing system

1985-09-30

1987-02-10

Wan, Gene

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250216, H01J 3150

Patent

active

046424520

ABSTRACT:
A semiactive night viewing system utilizing light intensification forms an image of a scene on an intensifier tube by using an objective lens. The intensified image is picked up by a television camera and is displayed by a display apparatus. The display is observed through an eyepiece. If an observer wishes to identify a target, he switches over to semiative operation by producing a flash of light having a wavelength outside the visible spectrum, having a very short duration, and having lower power. The flash illuminates the central area of the field. At the same time, an image storage device stores the image signal. Subsequently, the image is read out and displayed.

REFERENCES:
patent: 3305633 (1967-02-01), Chernoch
patent: 3509344 (1967-05-01), Bouwers
patent: 4071752 (1978-01-01), Manning

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