Switchable lamp shade or covering
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 22, 2022
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N/A
app pub date -
Jul 27, 2020
filing date -
Jul 27, 2020
priority date (Note) -
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Abstract
A lamp shade or cover that can be readily switched from a translucent-opaque mode to a transparent mode if the shade or cover from a material with transparency properties that can be modulated. A layer of liquid crystals encapsulated between transparent electrodes is included in the shade. Normally, the liquid crystals are randomly oriented and diffuse light so as to create a translucent state. When a direct current voltage is applied across the transparent electrodes, the liquid crystals become oriented and essentially transparent. Application of a pulsed or alternating current voltage can be used to modulate the degree of transparency.
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