Optical: systems and elements – Extended spacing structure for optical elements – Extension of tubular element adjustable
Patent
1997-12-06
1999-12-07
Spyrou, Cassandra
Optical: systems and elements
Extended spacing structure for optical elements
Extension of tubular element adjustable
359493, 359601, 296 971, G02B 530
Patent
active
059993162
ABSTRACT:
The present invention provides light valves including polarizing elements in which light transmission can be controlled by rotating at least one of the polarizing elements about an in-plane axis. Although reflective polarizing elements are preferred in devices according to the present invention to reduce the problem of heat build-up, the use of absorptive or other polarizers may also be envisioned. The light valves according to the present invention may find use in any application in which the transmission of light (visible or otherwise) is to be controlled. Examples of specific applications include, but are not limited to: windows, luminaires, skylights, etc.
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Allen Richard C.
Hietpas Gregg A.
Stickrod Jon E.
Wheatley John A
3M Innovative Properties Company
Patchett David B.
Schuberg Darren E.
Spyrou Cassandra
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