Laser visor having overlying photosensors

Details Laser visor having overlying photosensors Laser visor having overlying photosensors

1993-02-17

1995-05-02

Sikes, William L.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

351 44, 351158, G02C 710

Patent

active

054124395

ABSTRACT:
A person's sight may be seriously damaged when high levels of coherent light impinge upon one's eyes. In order to protect against this, a visor or windshield is equipped with a first layer of photosensor segments respectively and optically aligned with corresponding light-blocking segments which take the form of LCD material or photorefractive glass. Wherever light impinges upon photosensor elements, at levels above a preselected threshold, the corresponding light-blocking segments are switched to a light-blocking mode. The end result is the blocking of harmful light in only those portions of an entire field of view where harmful levels of light radiation exist.

REFERENCES:
patent: 4848890 (1989-07-01), Horn
patent: 5060062 (1991-11-01), Dotson
L. N. Itseleva, "Light Goggles Employing Liquid Crystals," Sov. J. Opt. Technol. 57 (1) Jan. 1990 pp. 32-34.
R. Weiss, "From Armaments to Eyes at Army Materials Lab," Lasers & Optronics, Nov. 1990, p. 25.

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