DLP TV Beginners Guide from Home-Theater-Reviews.co.uk

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DLP TV – Beginner’s Guide

DLP (Digital Light Processing) technology is a relatively new system that is providing serious competition for plasma and LCD sets in the home cinema market.

DLP TVs are ‘rear-projection’ types. They generate an image that is projected on to the back of a screen, all of this taking place inside a TV case that is slimmer than a conventional set, but deeper than a plasma or LCD model.

Basic DLP technology

The DLP chip was invented by Dr Larry Hornbeck of Texas Instruments in 1987. It is an array of tiny mirrors that is small enough to fit in the palm of your hand.

Though tiny, it is home to as many as two million tiny mirrors, each capable of tilting to a specified angle. A light source shines light on to the mirrors, and depending on which way they are tilted, they either reflect light on to the screen or they do not.

The result is that a pixel has been created on the screen – it will be light or dark depending on the angle of the mirror.

The addition of a ‘colour wheel’ in between the light source and the mirrors means that each mirror can reflect coloured light, rather than merely white light. This allows a DLP display to generate a full-colour image.

DLP technology can be used in rear-projection TVs, or in front-projection systems for the home or full-scale cinemas.

Pros of DLP TV

Cons of DLP TV

Top tips for buying a DLP TV

DLP TV Beginners Glossary

DLP chip – An array of microscopic mirrors that is used to generate a TV picture in a DLP projector or rear-projection TV

Front-projector – A projector that works just like one in a cinema, throwing a potentially huge image on to a screen at the other end of a room

Pixel – A ‘picture element’, the little dots that make up an image on a screen

Rainbow effect – An optical illusion caused by the colour wheel inside a DLP projector or rear-projection TV. Only visible to some

Rear-projection TV – A TV that uses a projector inside a case to deliver an image on to a screen

Screen Burn – A ghost-like image that is permanently displayed on a screen, usually due to a logo that has been left onscreen for hours at a time

Viewing angle – The range within which a watchable image is retained. Stray outside the viewing angle and the picture begins to fade

Article from HomeCinemaUK.com

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