Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2011-04-12
2011-04-12
Kianni, K. Cyrus (Department: 2883)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C349S064000, C349S061000
Reexamination Certificate
active
07924371
ABSTRACT:
A multimode display for night vision imaging system (NVIS) compatible operation including a display assembly including a display subassembly having a display component; and, a backlight printed wiring board (PWB) assembly positioned behind the display subassembly. The backlight printed wiring board (PWB) assembly includes a printed wiring board (PWB). A top side mounted LED array is mounted on a first side of the printed wiring board (PWB) including a top side plurality of LEDs including a top side set of white LEDs. A reverse-mounted LED array is mounted on a second side of the printed wiring board (PWB) including a reverse-mounted plurality of LEDs including a reverse-mounted set of white LEDs. A dedicated primary IR filtering means is operatively associated with the reverse-mounted LED array for conditioning light emitted from the reverse-mounted LED array for NVIS compatible operation. In a day mode of operation the forward-side mounted LED array illuminates the display subassembly. In an NVIS mode of operation filtered light from the reverse-mounted LED array illuminates the display subassembly.
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Barbieri Daniel M.
Evans Matthew J.
Kianni K. Cyrus
Rockwell Collins, Inc.
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