Controllable, variable transmissivity eyewear

Details Controllable, variable transmissivity eyewear Controllable, variable transmissivity eyewear

1989-11-30

1990-11-06

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

351 49, 351158, G02C 710

Patent

active

049681273

ABSTRACT:
Unique eyewear is disclosed having electronically controlled lens structures in which the optical transmissivity thereof is automatically adjusted to a level correlated with the level of ambient light. The preferred eyewear includes a pair of lens having liquid crystal material therebetween, a control circuit having a sensitivity-adjustable, ambient light sensor, and a power supply. The preferred power supply includes a battery and a photocell array distributed about the periphery of the lens structures. In use, the control circuit senses ambient light level and adjusts the transmissivity of the lens structure to a level correlated with the ambient light level.

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