Advanced Imaging


Advanced Imaging Magazine

Updated: January 12th, 2011 10:01 AM CDT

Cool and Bright

Indoors and out, LEDs provide more light with less heat
The MicroLens light guide
© Global Lighting Technologies
The MicroLens light guide from Global Lighting Technologies lights nine discreet areas of this thermostat: the main LCD area, characters and directional symbols at the top and sides of the unit (A-F), and keypad buttons at the top and bottom (G-H).
Smart Force Linear Driver
© Endicott Research Group
The Smart Force Linear Driver from Endicott Research Group is used with the company’s LED rails. The driver is less than 8mm in height.
white LED  by OSRAM Opto Semiconductors
© OSRAM Opto Semiconductors
OSRAM Opto Semiconductors has added a new white LED to its Golden Dragon® ARGUS® family.
amorphous-silicon thin-film-transistor liquid crystal display
© NEC Electronics America
One of NEC Electronics America’s four new amorphous-silicon thin-film-transistor (TFT) liquid crystal display (LCD) modules featuring super-transmissive natural light TFT technology.
NEC 2.7 -inch display for mobile applications
© NEC Electronics America
One of NEC’s three new 2.7-inch displays for mobile applications. They offer high luminance and high contrast ratios.
A 4.3
© DuPont Displays
A 4.3" WQVGA OLED display printed by DuPont Displays using its own materials and containment technology. The LTPS backplane was supplied by CMO/CMEL Corporation. DuPont Displays

By Barry Hochfelder

Traditional coverplates often are not treated with anti-reflective coatings and there is an air-gap between the display and coverplate. This results in multiple surfaces with high reflectivity—as much as 13.5 percent reflectance, the company says. By bonding the front substrate directly to the display, direct bonding eliminates the air gap and increases display contrast ratio by 400 percent for optimum outdoor viewing.

Apollo Display Technologies (Ronkonkoma, N.Y.) has developed a way to make LED-backlit thin film transistor (TFT) LCDs compatible with night vision imaging systems. It furnishes VGA and XGA resolution TFT LCDs backlit by LED rails that are addressable via the company's standard PRISMA II industrial controller board to switch between day and night modes.

The LED rails replace coated CCFL lamps which affect the daytime appearance of the display, says Richard McKay, Managing Director of Apollo. "Switching back and forth between different banks of LEDs to provide a seamless transition between day and night modes is possible."


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