CRT stands for Cathode Ray Tube. CRT projector creates high quality picture, even though CRT projector are no longer available for general consumer use, these are used for commercial purpose or theater or industrial settings. Small CRTs (one CRT for one primary color) are united with the magnified lens to produce good quality images. The CRT projector display clear image on large screen only in dark rooms. Proper setting of lens, CRT size and projector is able to produce high quality and high resolution image. As compare to other projectors CRT has longer life. Normally LCD and DLP projector last up to 2000 hours maximum while CRT last up to 20,000 hours maximum.

For selection of projector first of all consider size of the space will be use for projection. For large size CRT is perfect choice but the quality and characteristics are difficult to manage. CRT product good image in dark rooms but in light the image does not displayed clearly.

An option of CRT projector is good when the main motive of projector is flexibility of images displaying. I.e. when any one needs variable resolutions to displaying images, CRT is perfect choice for the projector. CRT produces high color quality images so these are good for home theaters for films and moving images. It has superior black level than LCD and DLP projectors. It does not gives rainbow effects like DLP projectors.

Limitations for CRT are, these projectors are quite large in size. The CRT, lens and screen occupy space so that these are not portable for moving or traveling. CRT produce good quality image only in dark rooms. Any one of the main three projection tube (red, green and blue) if fails then all three need to replace to get balanced color and brightness pictures. Typically CRT is very expensive as compare to other video projectors. And settings take more time to get perfect output than other projectors.