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:
Sep. 23, 1997
Filed:
Jun. 07, 1995
Elwood E Barnes, Cochranville, PA (US);
Other;
Abstract
A device for selectively reducing the intensity of light in the field of view of an eye or of an optical instrument is described. The device can reduce the light intensity emanating from multiple sources. In one embodiment, an eye gear has a frame, a power source, a light sensor, two light transmissive lenses having an array of shutter elements, user controls and processing circuitry. The user controls are utilized to set user constants to customize the apparatus, and may be used to select a mode of operation. During operation, the light sensor scans the field of view and produces light intensity signals. These light intensity signals are processed with the user constants and preset threshold values. If the light intensity signals exceed any of the threshold values, then one or more elements of the shutter matrices of each lens is darkened.