Adaptor for night vision goggles

Details Adaptor for night vision goggles Adaptor for night vision goggles

1996-06-21

1998-06-02

Dzierzynski, Paul M.

Optical: systems and elements

Compound lens system

Telescope

359827, G02B 2300, G02B 702

Patent

active

057609535

ABSTRACT:
An adaptor detachably mounted on an ocular of night vision goggles for quly adjusting the objective lens focus to clearly view far and near objects. The adaptor includes a positive optical power or close-up lens mounted in a holder pivotally mounted between a stowed, inoperative position and an operative position locating the close-up lens in axial alignment with the objective lens of the ocular. The close-up lens has an effective diameter substantially smaller than the diameter of the objective lens to raise the F
umber of the objective lens/close-up lens combination for increasing the depth of focus for enhanced near viewing. Auxiliary illumination is provided by a battery powered infra-red Light Emitting Diode (LED) mounted in the adaptor and energized by a switch as the lens holder moves toward its operative position.

REFERENCES:
patent: 5000556 (1991-03-01), Katsuma
patent: 5184231 (1993-02-01), Ellis
patent: 5467479 (1995-11-01), Mattes
patent: 5471678 (1995-12-01), Dor
patent: 5617257 (1997-04-01), Sheehy et al.

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