Zero input lag and zero motion blur, which makes them very suitable for video games of all kinds, as well video with fast motion (for example football or other sports).Interlaced material can be played directly, without need for imperfect deinterlacing mechanisms. As with CRT monitors, the image resolution and the refresh rate are not fixed but variable within some limits.Superior overall black level compared to LCD- and DLP-based projectors however, some smaller air-coupled CRT projectors exhibit an effect known as blooming or haloing around bright objects displayed on a dark background.Because of their 4:3 picture tubes, edge-blended CRTs use a larger surface area of the tubes when showing video in a cinemascope aspect ratio, which reduces uneven wear and yields higher total brightness. DLP and LCD projector edge blend setups show a visible gray seam in the middle in dark scenes. Because of the good black levels, CRT projectors are good contenders to be used in edge-blend setups.The Barco 912 claims an addressable resolution of 3200 x 2560, however with a bandwidth of 180 MHz it is not able to resolve fine detail at this resolution with the same clarity as other display technologies would, without lowering the refresh rate or enabling interlacing. High-end CRT projectors can precisely display images up to 1920 x 1200.No bulbs to replace after only a couple thousand hours (as with xenon-backlit DLP and LCD) however, CRT projectors can accumulate burn-in if set to a high contrast value and/or displaying static content over time.A projector that is set to a lower maximum brightness will generally last longer. Long service life CRTs maintain good brightness to 10,000 hours, although this depends on the contrast adjustment setting of the projector.Some of the first CRT projection tubes were made in 1933, and by 1938 CRT projectors were already in use in theaters. As of 2012, very few (if any) new units are manufactured, though a number of installers do sell refurbished units, generally higher-end 8" and 9" models. Improvements in these digital video projectors, and their subsequent increased availability and desirability, resulted in a drastic decline of CRT projector sales by the year 2009. Though systems utilizing projected video at one time almost exclusively used CRT projectors, they have largely been replaced by other technologies such as LCD projection and Digital Light Processing.
The other side of the screen can be connected directly to a heat sink, allowing the projector to run at much brighter power levels than the more common CRT arrangement. The image in the Sinclair Microvision flat CRT is viewed from the same side of the phosphor struck by the electron beam. Various designs have made it to production, including the "direct" CRT-lens design, and the Schmidt CRT, which employed a phosphor screen that illuminates a perforated spherical mirror, all within an evacuated cathode ray tube. The red, green and blue portions of the incoming video signal are processed and sent to the respective CRTs whose images are focused by their lenses to achieve the overall picture on the screen. Most modern CRT projectors are color and have three separate CRTs (instead of a single, color CRT), and their own lenses to achieve color images. The first color CRT projectors came out in the early 1950s. The image is then focused and enlarged onto a screen using a lens kept in front of the CRT face. A CRT projector is a video projector that uses a small, high-brightness cathode ray tube (CRT) as the image generating element.
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