Single eyepiece binocular microscope

Details Single eyepiece binocular microscope Single eyepiece binocular microscope

1988-07-14

1989-04-04

Henry, Jon W.

Optics: image projectors

Plural projection paths with single light source

350572, 350145, 353 39, G02B 2136, G02B 2100

Patent

active

048180840

ABSTRACT:
A single eyepiece binocular microscope includes a microscope housing a generally horizontal base and housing several optical elements. An objective lens is positioned immediately above the specimen and adjacent the base plane. A first mirror, vertically above the objective lens, redirects the light down and away from the observer along a path to intersect a second mirror positioned adjacent the base plane. The second mirror redirects the light along a third light path up and towards the observer for intersection with a rear projection screen. A viewing chamber shields the screen from ambient light for a brighter image and for an illusion of depth. A second lens, positioned just behind the real image of the first lens, provides a real image at the screen. A third lens at the viewing opening creates a virtual image between the second mirror and the rear projection screen to aid the impression of depth. The arrangement provides an impression to the viewer of looking into the instrument and at the specimen, an important consideration for use by children.

REFERENCES:
patent: 2307951 (1943-01-01), Plaut et al.
patent: 2891444 (1959-06-01), Ewald
patent: 4691997 (1987-09-01), Muchel

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