Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1995-03-10
1999-03-16
Chen, Vivian
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428421, 428480, 428483, 428522, 428523, 428910, 359577, 359580, 359586, 359587, B32B 702, B32B 708, B32B 2730, B32B 2736
Patent
active
058827749
ABSTRACT:
Birefringent multilayer optical films in which the refractive indices in the thickness direction of two adjacent layers are substantially matched have a Brewster angle (the angle at which reflectance of p-polarized light goes to zero) which is very large or is nonexistant. This allows for the construction of multilayer mirrors and polarizers whose reflectivity for p-polarized light decreases slowly with angle of incidence, are independent of angle of incidence, or increase with angle of incidence away from the normal. As a result, multilayer films having high reflectivity (for both planes of polarization for any incident direction in the case of mirrors, and for the selected direction in the case of polarizers) over a wide bandwidth, can be achieved.
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Jonza James M.
Ouderkirk Andrew J.
Stover Carl A.
Weber Michael F.
Chen Vivian
Fortkort John A.
Minnesota Mining and Manufacturing Company
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