How does Rear-Projection Television Work?

Like many people, you may be filled with a burning curiosity to know what makes a rear projection TV do its magic. To be honest, it’s largely done with smoke and mirrors. (Only joking – if you have smoke appearing out of your rear projection television you have a problem!)

Basically, a video image is projected via a projectors lamp inside the box, then a system of lenses and mirrors redirect the image onto the inside surface of a translucent screen.

When this technology was first introduced, CRTs (cathode ray tubes – responsible for making old fashioned TV sets so bulky) were used, and it was a success. The down side to this was that the tube made the case extremely heavy and, typically, a floor-standing cabinet was needed to house it.

Eventually,In the end, as screens grew bigger, and the industry began to take up the new, wider 16:9 aspect ratio (the ratio of height to width), those old CRT cabinets gradually became replaced by new models which deliver high-quality performance in light, compact enclosures.

RPTVs come ready with high definition capability these days. This is a very important point – they come equipped to handle everything high-definition broadcasting and discs can throw at them. And make no mistake – HDTV will provide wide-screen television in much better detail and clarity than we are used to from traditional broadcasting. In addition to tuners for cable and analog television – not to mention the ability to receive unencrypted digital cable signals without requiring a set-top box – high definition tuners come as standard with modern rear-projection TVs, which means they can take full advantage of all the exciting broadcasting improvements which will be with us in the near future.

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