Eyecup insert for night vision goggles

Details Eyecup insert for night vision goggles Eyecup insert for night vision goggles

1992-07-02

1993-07-06

Ben, Loha

Optical: systems and elements

Glare or unwanted light reduction

Barrel end or lens mount shade

359612, 359408, 354287, 2426, G02B 2100

Patent

active

052259323

ABSTRACT:
An eyecup insert is provided which allows easy attachment and removal of an eyecup from an associated night vision goggle. The eyecup provides a light secure seal when pressed against the head of an operator of the goggle. A connecting end of the eyecup has annular channel which engages the insert. The insert is ring shaped with a central aperture having a plurality of detents protruding inwardly of the aperture. The operator can form a snap-fit connection between the eyecup and the goggle by forcing the aperture over a circular flange which surrounds an eyepiece of the goggle until the detents have snapped passed the flange. The eyecup can be removed by reversing the installation procedure.

REFERENCES:
patent: 2350110 (1944-05-01), Hood
patent: 3379485 (1968-04-01), Steisslinger
patent: 3701582 (1972-10-01), Koch
patent: 3738238 (1973-06-01), Hager
patent: 4295706 (1981-10-01), Frost
patent: 4381892 (1983-05-01), Someya
patent: 4526440 (1985-07-01), Lundberg et al.
patent: 4687312 (1987-08-01), Navarro
patent: 4698857 (1987-10-01), Kastendieck et al.

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