Laser TV
The dream about Laser TV started early 2006 when Novalux, Sunnyvale, Ca, has demonstrated its first Necsel laser arrays that emit more than 750 mW of red light.(8) NECSEL which stand for; Novalux Extended Cavity Surface Emitting Laser, is a new solid state lighting technology. Novalux uses a semiconductor laser driven by high-power surface emitting diode lasers. (9)
Necsel emits diffraction-limited beams of infrared (IR) light, which are doubled to make visible wavelengths (10). In past the main obstacles to adapt laser technology in TVs were lacking of power, compact size, and cost performance, however, NECSEL lasers overcome these obstacles and are being considered for rear projection tvs (RPTVs) and front projectors. (9)
Main components of LASER TV:
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This rear-projection TV is powered by laser instead of mercury lamps used in other projector TVs. Separated red, green, and blue semiconductor lasers are used in combination with an HD chip.(11) In Laser TV beams of red, green , and blue light shine on an array of multiple micro mirrors, each mirror represents a single pixel which will be projected onto the screen . These mirrors tilt either toward or away from the source of Laser beams, when mirror tilts away from Laser beam it produce a black pixel, and when it tilt toward the laser, it correspond pixel of a certain laser color. These mirrors are constantly switching off and on thousands times per second. Laser shine on these mirrors in varying intensity mixing fundamental colors; red, green, and blue creating huge gamut of colors which are more rich and intense than these of traditional projection TV.(12)
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........................3LCD with Lamp ..............................................................................................3LCD with Laser
http://www.sed-fernseher.eu/images/DLP-laser.jpg
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