John Steven Wentz

US Patent:

48180840, Apr 4, 1989

Filed:

Jul 14, 1988

Appl. No.:

7/220350

Inventors:

John B. Wentz - Oakland CA

International Classification:

G02B 2136
G02B 2100

US Classification:

350508

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.

US Patent:

D391503, Jul 10, 1990

Filed:

Apr 26, 1988

Appl. No.:

7/186980

Inventors:

John B. Wentz - Oakland CA

US Classification:

D16131