Night vision goggle focusing aid

Details Night vision goggle focusing aid Night vision goggle focusing aid

1994-02-14

1995-12-05

Lerner, Martin

Optical: systems and elements

Barrel end eye guard

359894, 359900, G02B 2316, G02B 2740

Patent

active

054734720

ABSTRACT:
An eye piece focusing aid provides improved focusing of an eye onto an intensified image screen of a NVG. A lens cap or blocking screen has two small holes (approximately one to two millimeters in diameter) which appear as a single hole when the retina of the eye is focused on the intensified image screen.

REFERENCES:
patent: 3418908 (1968-12-01), Land
patent: 4168429 (1979-09-01), Lough
patent: 4410243 (1983-10-01), Furste
patent: 4863269 (1989-09-01), Ellis
patent: 4927237 (1990-05-01), Hart
patent: 4943151 (1990-07-01), Cushman
patent: 4997269 (1991-03-01), Cushman
patent: 5089914 (1992-02-01), Prescott

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