Engineers at Tulip Development Laboratory in Milford Square, Penn., used the Clarex DR-III light diffusion filter materials provided by Astra Products in Baldwin, N.Y., to optimize brightness on the backlit active-matrix liquid crystal display for a U.S. Army research helicopter cockpit display.
"Our displays are customized for each customer application, says Randy Pyles, staff engineer at Tulip. "We now have total flexibility with Astra`s materials to provide the size, thickness, and transmissive properties of the viewing area regardless of the milieu of the application.
"For [the Army application] The Clarex DR III is specified as an optical light diffusion filter," Pyles explains. "It combines excellent optical characteristics of light transmittance with uniformly controlled diffusion of transmitted light. The 2-millimeter thick material is ideally suited for backlit displays. Also we use it in backlights for our other ruggedized display panels."
Clarex optical-quality acrylic diffusion filter materials for flat-screen displays are formulated to optimize brightness and uniformity of backlit liquid crystal displays. Cast in lightweight acrylic, and available in light transmissions from 45 to 93 percent, Clarex DR III materials offer increased brightness without sacrificing uniformity, claim Astra officials. Clarex materials are used in marine and automotive electronics, cell phones, notebook computers, video cameras, industrial instruments, and avionics. — J.M.
For more information on Clarex DR III contact Astra Products, by phone at 516-223-7500, by fax at 516-868-2371, by mail at Astra Products, P.O. Box 479, Baldwin, N.Y. 11510, or on the World Wide Web at http://www.astraproducts.com.