A video projector is the one that takes video signal and displays the same on a projection screen with the help of lens system. every video projector make use of bright light to project the image and the one with latest technology are so perfect that they can correct any curves, blurriness and any other inconsistencies through manual settings.
One can find video projectors used for classroom training, conference room presentations and home theatre applications. The portable projectors in this category have common display resolutions of XGA, SVGA, 720p and 1080p. The cost of the video projectors depends on the resolution as well as the light output, contrast and acoustic noise output. The modern projectors are well equipped with sufficient light even to small screens, enabling it to be viewed under controlled lighting or where there are no windows or at night.
The video projector, work with different projection technologies. The CRT projector uses cathode ray tubes; a minimal maintainenece required projector is one of the oldest systems and its use is going down due to its bulky cabinet. The LCOS projector uses liquid crystal on silicon. The D-ILA JVC’s Direct-drive Image Light Amplifier is based on LCOS technology. The DLP projector uses Texas Instruments DLP Technology. In this technology there are one, two or three micro fabricated light valves digital micro mirror devices (DMDs).
