Peripheral Assignment

LCD Projectors
By: Courtney S.
In New York, during 1968, an inventor named Gene Dolgoff wanted to invent a video projector that would be able to allow brighter light to pass through from the lamp to the resulted lenses to allow clearer images than the available brand 3-CRT projectors. He developed the first liquid crystal projector in 1971 after many trials with different materials. He decided the liquid crystal material would be best to modulate the light. After building the 1971 new invention, errors arose like very noticeable pixels on the image. He invented optical methods to create high efficiency and high- brightness projectors and created the method of depixelization to minimize the appearance of pixels on the image, this creating a high definition image. After those correction, the final outcome in 1988: the world’s first LCD ( Liquid Crystal Display) projector.
Also in 1988, Gene Dolgoff started the very first LCD projector company. Licensing Samsung, Panasonic, BENQ, and several other major companies to sell these fabulous new LCD projectors. Now these LCD projectors are being updated into DLP projectors and have been transformed into TV’s for better HD images.

As shown on the diagram above, the LCD Projector’s most important part is the lamp, or the light source. The methods begin at the light source, where normally it is located at the back of the LCD projector. The emitted light from the light source first hits the Red Dichroic Mirror. This Dichroic Mirror separates the light colours by only allowing the red light of the emitting light through. The other colours don’t pass through the Red Dichroic Mirror but bounce off of the mirror into a different direction. Following the Red light ( note: the following methods are similar to what occurs with the other colours), after the red light passes through the Red Dichroic Mirror, it approaches another Mirror that doesn’t allow it to pass through, therefore aiming towards the LCD or Liquid Crystal Display panels. The LCD panels convert the light into the image that you see on a screen or a wall. It filters the light to block or allow it to pass to organize the shades of the image that the viewer sees. After the light passes through the LCD panels, it is joined with the other colours in the Dichroic Combiner Cube to create the wanted image.

Bibliography
www.kawarthatv.com/Home%20Video/LCD%20TV.htm
www.futureshop.ca/search/searchresult.asp?logon=&langid=EN&search=KWS
www.benq.ca/products/Projector/?product=733&page=specifications
www.trueretail.co.uk/lcdprojinfo.html
en.wikipedia.org/wiki/LCD-projector

This is the peripheral Assignment that I wrote. It took awhile to write up and make sense of this mess of a LCD Projector. The table was the most annoying part of the whole project. I didn't like looking up different LCD Projectors and finding the price, resolution, and potential screen size. That was a pain. The rest was pretty straight forward and like any other essay that I have written in the past.