Laser TV

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Laser TV is an alternative screen technology that was  proposed by Helmut KV Lotsch in 1963 - soon after the invention of the laser . Sony made first attempts in this direction in the late 1960s; in the 1990s, the German company Schneider developed and demonstrated a prototype. At the beginning of the 21st century, the laser TV system was ready for the market and in 2008 a commercial device was presented for the first time at the Consumer Electronics Show in Las Vegas .

The large color space is characteristic of the picture . This enables particularly realistic color reproduction.

history

The basic idea was ascribed to Helmut KV Lotsch in the German patent 1 193 166. The principle of laser color television was presented in detail in 1970. In Germany, Schneider AG presented its first own prototype at the end of 1993, which was developed in cooperation with Daimler-Benz and Jenoptik AG . Due to the insolvency of the Schneider company and its then specially founded subsidiary "Schneider Laser Technologies" in 2002, the development was not continued until it was ready for the market.

LaserVue was the name of the first laser TV model that had been commercially available since 2009 (as of 2011: USA only) and was produced by Mitsubishi . It was a rear projection device - this type of screen was superseded by flat screen televisions . There are currently no known devices for direct projection onto a screen for the consumer market; Projectors equipped with “laser technology” use DLP chips as image converters. The laser or lasers only serve as a light source.

Functions

Three laser beams in the colors red, green and blue are directed via a mirror system and projected to the desired position on the screen. A newer system, however, is based on micromirror actuators . The television picture can be viewed in any system by frontal and rear projection .

Technical

  • Representation of 90% of the color spectrum that can be perceived by the human eye
  • very high image sharpness
  • Brightness values ​​of 500 cd / m²
  • 1080p DLP resolution (1920 × 1080 pixels)
  • 120 Hz refresh rate
  • 3D capability
  • Low energy costs
  • Low manufacturing costs
  • Flat design of approx. 30 cm
  • Screen diagonals from 165 cm
  • By using plastic for the screen surface, an enormous weight reduction could be achieved

attachment

supporting documents

  1. ↑ German patent 1 193 166 with the title “Optical transmitter for at least two color components”, was applied for on October 26, 1963 by - and issued on January 20, 1966 to - Telefunken in Ulm. Helmut KV Lotsch was named as the inventor
  2. ↑ HKV Lotsch, F. Schröter: Das Laser-Farb-Fernsehen , Laser 2 (December 1970) 37-39
  3. ↑ HKV Lotsch, F. Schröter: Das Laser Farb-Fernsehen , Laser 2 (December 1970) 37-39

Web links

See also