Polarized enhanced confidentiality
First Claim
1. A system comprising:
- a viewing area;
an information screen disposed within the viewing area, the information screen configured to display information visible on the information screen from within the viewing area, the information screen configured to display the information by;
reflecting polarized light of a first polarization;
emitting polarized light of the first polarization;
orboth reflecting and emitting polarized light of the first polarization;
a window comprising;
a transparent substrate; and
a window polarizer extending across the transparent substrate, the window polarizer oriented with its polarization axis to block light of the first polarization and pass light of a second polarization;
a viewing-restricted area separated from the viewing area by the window, where display of the information to the viewing-restricted area is inhibited by the window polarizer, but the viewing area is at least partially visible through the window via light of the second polarization.
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Accused Products
Abstract
A system for selectively controlling visibility of information in a work environment is provided. The system includes one or more polarized emissive screens located within the work environment. The screens have a first direction of polarization. Information displayed on the screens is visible from inside the work environment. The work environment includes at least one window which permits viewing of the polarized emissive screens from outside of the work environment. A polarizing filter having a second direction of polarization arranged at an angle to the first direction of polarization is positioned proximate to the window. From outside the work environment, the inside of the environment can be seen through the window, but with an altered view of the information on the displays.
193 Citations
20 Claims
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1. A system comprising:
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a viewing area; an information screen disposed within the viewing area, the information screen configured to display information visible on the information screen from within the viewing area, the information screen configured to display the information by; reflecting polarized light of a first polarization; emitting polarized light of the first polarization;
orboth reflecting and emitting polarized light of the first polarization; a window comprising; a transparent substrate; and a window polarizer extending across the transparent substrate, the window polarizer oriented with its polarization axis to block light of the first polarization and pass light of a second polarization; a viewing-restricted area separated from the viewing area by the window, where display of the information to the viewing-restricted area is inhibited by the window polarizer, but the viewing area is at least partially visible through the window via light of the second polarization. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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displaying information on an information screen within a viewing area by; reflecting polarized light of a first polarization off of the information screen; emitting polarized light of the first polarization from the information screen;
orboth reflecting and emitting polarized light of the first polarization; blocking polarized light of the first polarization at a window disposed between the view area and a viewing-restricted area to obstruct viewing of the information through the window, the window comprising; a transparent substrate; and a window polarizer extending across the transparent substrate, the window polarizer oriented with its polarization axis to block light of the first polarization and pass light of a second polarization; and allowing transmission of light of the second polarization through the window. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of manufacture comprising:
fabricating a window comprising; a transparent substrate; and a window polarizer extending across the transparent substrate, the window polarizer oriented with its polarization axis to block light of a first polarization and pass light of a second polarization; the window configured to, when placed to separate a viewing-restricted area from a viewing area; inhibit, by the window polarizer, display of information on an information screen to the viewing-restricted area where; the information screen is disposed within the viewing area, the information screen configured to display the information which is visible on the information screen from within the viewing area, the information screen configured to display the information by;
reflecting polarized light of the first polarization;
emitting polarized light of the first polarization;
or
both reflecting and emitting polarized light of the first polarization;allow, at least partially, viewing of the viewing area from the viewing-restricted area through the window via light of the second polarization. - View Dependent Claims (15, 16, 17, 18, 19, 20)
Specification