CRTteknologien

CRTteknologien, or Cathode Ray Tube technology, was the dominant display technology for televisions and computer monitors for much of the 20th century. It relies on a vacuum tube containing an electron gun at the rear and a phosphorescent screen at the front. The electron gun fires a beam of electrons, which are then accelerated and deflected by magnetic fields. These deflected beams strike the phosphor coating on the inside of the screen, causing it to glow and produce an image.

The color reproduction in CRTteknologien was achieved through the use of three electron guns, one each for red, green, and blue light. These guns were precisely aimed to illuminate corresponding phosphor dots or stripes on the screen. By varying the intensity of each electron beam, a full spectrum of colors could be created. The refresh rate, or how often the image was redrawn, also played a crucial role in perceived image quality, with higher refresh rates reducing flicker.

While CRTteknologien offered good color vibrancy and deep blacks, it also had limitations. The tubes were bulky and heavy, requiring significant space. They also consumed a considerable amount of power and generated heat. The image could suffer from geometric distortion and screen burn-in over time. Despite these drawbacks, CRTteknologien was a revolutionary innovation that brought visual information and entertainment into homes worldwide, paving the way for future display technologies. Its eventual decline was primarily due to the advent of thinner, lighter, and more energy-efficient technologies like LCD and OLED.