Visual security eyecup

Optical: systems and elements – Glare or unwanted light reduction

Patent

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Details

359 39, 359600, 359611, 359614, 359228, 250214VT, G02B 2700

Patent

active

054083591

ABSTRACT:
A self contained protective shutter assembly for an imager eye piece inclng an eyecup, a powered shutter, switch, power supply and interface coupling.

REFERENCES:
patent: 3390931 (1968-07-01), Luning et al.
patent: 3594061 (1971-07-01), Selvage
patent: 3594062 (1971-07-01), Disley
patent: 4601540 (1986-07-01), Karning et al.
patent: 5153760 (1992-10-01), Ahmed
patent: 5161025 (1992-11-01), Nakao

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