Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1995-04-20
1996-07-23
Gross, Anita Pellman
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 67, 359 86, 359 43, 359 83, G02F 11335, G02F 11333, G02F 1133, G02F 113
Patent
active
055395520
ABSTRACT:
A protective member for a display device such as an LCD display mounted in a display system provides protection to the display device against ultraviolet light and shock. In one embodiment, the protective member is mounted between the display device and at least one source of light energy which includes both ultraviolet light energy and visible light energy. In another embodiment, the protective member is used to actually fabricate the display device. The protective member blocks generally all of the ultraviolet light energy which has a wavelength of between 200 to 390 nanometers, while transmitting at least 90 percent of the visible light energy having a wavelength greater than approximately 410 nanometers. The protective member has a thermal coefficient of expansion (TCE) of between 45.times.10.sup.-7 /.degree. C. and 60.times.10.sup.-7 /.degree. C., so as to be useable with present day manufacturing processes for such display devices.
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Desai Bhupendrarai C.
Doyle John
Giuglianotti Michael J.
Abraham Fetsum
Aerospace Display Systems
Bourque Daniel J.
Carroll Kevin J.
Gross Anita Pellman
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