Laser TV Launches

Start-up Prysm demos low-power Blu-ray laser-based displays

3 min read

23 June 2010—After five years of development, Prysm, based in San Jose, Calif., has introduced a laser television. The technology is built around Prysm’s patented repurposing of Blu-ray lasers to excite red, green, and blue pixels on a screen, just as old-fashioned cathode ray tubes (CRTs) do. Unlike CRTs, however, Prysm’s "laser phosphor display" (LPD) is compact, energy efficient, and has high resolution. The company—whose outsize ambitions were reflected in a booth equal in size to Panasonic’s and Sharp’s at InfoComm earlier this month—says the technology will be competitive with LCDs and plasma screens, the dominant players in today’s HDTV market, within three to five years.

The first-gen Prysm TV (dubbed the TD1) is composed of a glass screen measuring 25 inches diagonally (63 centimeters), the inside of which is painted with tiny vertical lines of phosphor that glow red, green, or blue when hit with a soft UV laser. The TD1’s lasers sit behind the screen, pointing up toward a bank of small, rapidly moving mirrors similar to the kind used in laser printers. The mirrors scan the lasers across the screen to produce the picture.

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How Nanotech Can Foil Counterfeiters

These tiny mechanical ID tags are unclonable, cheap, and invisible

10 min read
Close up of a finger with a clear square on it.
University of Florida

What's the largest criminal enterprise in the world? Narcotics? Gambling? Human trafficking?

Nope. The biggest racket is the production and trade of counterfeit goods, which is expected to exceed US $1 trillion next year. You've probably suffered from it more than once yourself, purchasing on Amazon or eBay what you thought was a brand-name item only to discover that it was an inferior-quality counterfeit.

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