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:
Mar. 27, 1990
Filed:
Dec. 20, 1985
Michael L Cohen, Potomac, MD (US);
Other;
Abstract
A lens is provided which can be worn, in the form of eyeglasses, for the reduction of visual noise and resulting eye strain for an observer of a visual display terminal. The lens comprises a light transmitting plastic body having convex shaped outer surface away from the eye of the observer and a concave inner surface facing the eye of the observer. The body is provided with, in combination, an ultraviolet absorber for at least substantially blocking the transmission of ultraviolet radiation incident upon the lens, a color dye for diminishing the transmission of radiation having a wavelength of between 500-600 nm, and a grey dye for reducing the transmission of visible light. A corresponding method is also provided, along with a method and a kit for producing such a lens.