Optical: systems and elements – Polarization without modulation – Polarization by scattering
Patent
1996-07-29
1998-04-21
Dzierzynski, Paul M.
Optical: systems and elements
Polarization without modulation
Polarization by scattering
359501, 296 972, 296 976, G02B 530, G02B 2728, B60J 300
Patent
active
057424306
ABSTRACT:
A device is provided including a flexible sheet having extents encompassing at least a circular area, said flexible sheet doubled-over upon itself through the center of the circular area such that the resultant respective halves of said circular area overlap and form a semicircular field of view; and a sleeve for maintaining the overlapping configuration of said doubled-over flexible sheet, yet allowing said flexible sheet to be displaced about the center of said circular area within the doubled-over configuration. In a particular embodiment, the encompassed circular area of said flexible sheet has at least one light-transmissive region within the circular area, such that transmission of light through the aforementioned field of view can be varied by said displacement of the flexible sheet within said doubled-over configuration. Such embodiment, when employing a polarizing sheet as said flexible sheet, can be used as a variable light transmission device.
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de Luna Renato M.
Dzierzynski Paul M.
Polaroid Corporation
Robinson Mark A.
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