The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 1988
Filed:
Feb. 27, 1984
William J Beecher, Chicago, IL (US);
Other;
Abstract
An eccentric or off-center positive achromatic lens for attachment to the objective lenses of a binocular instrument in pairs, to the end that their counter-rotation, toward or away from each other, so moves the separate images formed by the two binocular telescopes as to fuse them into a single, stereoscopic image at approximately reading distance. The lenses are especially adapted to light-weight, high-quality spectacle binoculars, permitting the hands to remain free. They adapt such a binocular to become a stereomicroscope, ideal for highly-detailed dental work, micro-surgery and small-parts assembly. Suitable means is provided, in the form of a pair of grooved, rotatable tubes, containing the pair of asymmetrical lenses, to turn them in unison by means of an elastic belt to effect the stereoscopic fusion.