LCD Video Projector
Why Buying an LCD Video Projector?
LCD light gates are used in the manufacturing of LCD video projectors and they are considered to be the simplest of all the video projectors. As this is not much costly and being used for long time, it is considered to the most common and affordable home theater as well as business use like in conference rooms.
And LCD video projector basically works by passing a powerful light source through transparent light chips made of individual pixels, which show the movement of images, and a lens is used for the projection of magnified image on screen.
The main feature making this projector most practical is its very small chip which makes it very compact. Projection tubes used in CRD projectors are hundred times larger than LCD chips.
The high contrast and brightness capacity as well as low power consumption make LCD video projector even more desirable and attractive. These features make tem perfect for portable use such as for business presentations.
LCD video projectors can also act as home theater with little modifications in their construction. On the top, these are very inexpensive as compared to other video projectors start at about 1000 dollars for business use and 3000 dollars for home theater.
But there are some limitations to LCD video projector too. Since LCD chips have a finite number of pixels, signal inputs that have higher resolutions must be scaled to fit the pixel field count of the particular LCD chip. For example, a typical HDTV input format of 1080i needs a native display of 1920×1080 pixels for a one-to-one display of the HDTV image. However, if your LCD chip only has a pixel field of 1024×768, the original HDTV signal must be scaled to fit the 1024×768 pixel count on the LCD chip (in addition the image will also have to be letterboxed to reproduce the correct widescreen aspect ratio). This is where CRT projectors can excel over an LCD projector, since they are not limited by a fixed pixel field; they are more flexible at displaying various resolutions, due to being able to variably scan the image onto the projection tube surface.
Other variants of LCD video projection technology in use are: LCOS (Liquid Crystal on Silicon), D-ILA (Digital Imaging Light Amplification – developed and used by JVC), and SXRD (Silicon Crystal Reflective Display – developed and used by Sony). They are also very helpful.