Hand-held magnifier device

Details Hand-held magnifier device Hand-held magnifier device

1989-08-07

1990-11-06

Henry, Jon W.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

350523, 350248, D16131, G02B 702

Patent

active

049681257

ABSTRACT:
A hand-holdable magnifier device includes a collapsible tube section mounted on one side of a slotted base. A lens system included with the device has an objective, an ocular and a condenser whereby clear and sharp images can be obtained. The device is amenable to various configurations, such as a graduation cap or mortarboard.

REFERENCES:
patent: 42843 (1964-05-01), Ellis
patent: 905063 (1908-11-01), Faehrmann
patent: 1175609 (1916-03-01), Cottrell
patent: 2676754 (1954-04-01), Hittle
patent: 3410635 (1968-11-01), Lockwood
patent: 3582181 (1971-06-01), de Chueca
patent: 4142537 (1979-03-01), Fenelon
patent: 4815835 (1989-03-01), Corona

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