Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Patent
1995-06-07
1997-09-23
Dang, Hung X.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
351 49, 351158, G02C 716, G02C 712, G02C 100
Patent
active
056710356
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.
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