LCD, DLP and LCOS are three projector technologies which are predominantly used in schools, colleges and corporate houses for giving presentations, watching videos, classroom teaching, product training etc. LCD projectors use LCD (Liquid Crystal Display) technology to display text and image on an interactive whiteboard or other projection screen. They are also known as multimedia projectors as they can display both text and images from PC, TV and video recorders. They can work with all types of notebooks and desktops. The projection can be of SVGA or XGA resolution.
SVGA means 800 * 600 resolutions whereas XGA means 1024 * 768 screen resolution. A digital image is made up of dots or pixels. A resolution is the size of the digital image which is expressed in width * Height. For e.g.: 800 * 600 resolution means, an image is 800 pixels wide and 600 pixels in height. The projector brightness is measured in ANSI (American National Standard Institute) Lumens.
The DLP and LCOS projectors are also considered to be a type of LCD projector although they use DLP (Digital Light Processing) and LCOS (Liquid Crystal on Silicon) technologies for video projection.
LCD technology is best for computer use and DLP is best for projecting videos. LCD delivers better color saturation, sharper image and is more light efficient than DLP. The DLP projectors are smaller and lighter than LCD and produce higher contrast videos.
LCOS technology is best for very high resolutions. Its projectors are bigger and heavier than LCD and DLP and generally cost more. One practical application of LCD technology is its use by teachers when training students to use software by capturing the image say 'Screen of MSWord' from a computer screen and projecting it on the interactive whiteboard so that all the students can see what is going on the computer screen. Some projector accessories are: cabinets, cases, ceiling mount kits, cables, lens, lamps, remote control, projection screen, stands, trolleys, digital microscope, visualizers etc. - 31403
SVGA means 800 * 600 resolutions whereas XGA means 1024 * 768 screen resolution. A digital image is made up of dots or pixels. A resolution is the size of the digital image which is expressed in width * Height. For e.g.: 800 * 600 resolution means, an image is 800 pixels wide and 600 pixels in height. The projector brightness is measured in ANSI (American National Standard Institute) Lumens.
The DLP and LCOS projectors are also considered to be a type of LCD projector although they use DLP (Digital Light Processing) and LCOS (Liquid Crystal on Silicon) technologies for video projection.
LCD technology is best for computer use and DLP is best for projecting videos. LCD delivers better color saturation, sharper image and is more light efficient than DLP. The DLP projectors are smaller and lighter than LCD and produce higher contrast videos.
LCOS technology is best for very high resolutions. Its projectors are bigger and heavier than LCD and DLP and generally cost more. One practical application of LCD technology is its use by teachers when training students to use software by capturing the image say 'Screen of MSWord' from a computer screen and projecting it on the interactive whiteboard so that all the students can see what is going on the computer screen. Some projector accessories are: cabinets, cases, ceiling mount kits, cables, lens, lamps, remote control, projection screen, stands, trolleys, digital microscope, visualizers etc. - 31403
