Projectors: LCD vs DLP vs LED – which one is right for you?

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PROJECTORS: DLP vs LCD vs LED – which option is right for you?

Over the past 50 years projection technology has changed quite a bit in terms of how the colourful image is created on the wall or projection screen. Because each option has their respective strengths and weaknesses and for that reason how do you know which one to buy?

LCD Projection

First of all Liquid Crystal Display (LCD) projection was created in 1984 by Gene Dolgoff.

So how does it work: InchBrook Audio Visual LCD
Light passes through 3 LCD colour panels: Red, Green and Blue.
The most noteworthy is that each panel only allows certain colours to pass through or be blocked. They then combined again in a prism to create the images on screen.

Pro’s and Con’s:
While the lamps in LCD projectors above all generally have a longer life. There are consequently no moving parts which furthermore make them more affordable than their DLP counterparts. As a result it requires regular filter replacements and maintenance. This is due to dust settling on the LCD panels and can cause gradual colour degrading.

Also LCD projectors also have a lower contrast ratio (contrast between darkest and brightest pixels).
This might become most noteworthy when high quality photographs or still images are viewed. Projectors using LCD technology are usually compatible with zoom lenses and lens shifts which makes them great for large boardrooms, auditoriums or cinema projectors.

DLP Projection

Digital Light Processing (DLP) was originally developed by Texas instruments and first introduced in 1997 by Digital Projection Ltd. Both Digital Projection and Texas Instruments were handed Emmy Awards in 1998 for the DLP projector technology.

So how does it work:
InchBrook Audio Visual DLPIn DLP projectors, the image is created by microscopically small mirrors laid out on a chip, known as the Digital Micromirror Device (DMD). Each mirror represents one or more pixels in the projected image.
Colours are produced by a colour wheel which is placed between the light source and the DMD chip. The DMD chip is synchronized with the rotating motion of the colour wheel so that the green component is displayed on the DMD when the green section of the colour wheel is in front of the lamp. The same is true for the red, blue and other sections.


Pro’s and Con’s:
DLP projectors require less maintenance as they are filter free and have a sealed DLP chip. This means that no dust can settle on the mirrors which in turn means they are virtually immune to colour decay.

DLP projectors have a high contrast ration which will produce crisp images and colourful detail. These projectors can also produce 3D images if the respective 3D glasses are used. Most DLP projectors are not compatible with zoom lenses or lens shifts which makes them ideal for smaller rooms.

LED Projectors

Light emitting diode (LED) basically refers to the light source. A LED projector can use either LCD or DLP technology to produce the image.

Pro’s and Con’s:
There are many benefits to choosing a LED projector instead of a standard lamp projector. One of the main reasons is the 20,000 hour light source. Mercury based projector lamps are very expensive to replace and with the LED projector, this will never be necessary.
Not only will this reduce your total cost of ownership, but the LED’s are energy efficient too.

InchBrook Audio Visual | Casio Projector Core Advanced

Keep in mind that most LED projectors will only produce a light output of 500 lumens vs the 3000 lumens from the Mercury lamp. However CASIO entered the market with a high brightness LED projector with brightness similar, if not better than standard lamp projectors.
LED projectors are ideal for high use environments like training rooms or schools where the projector will run for many hours every day.

There is a projector to suit any user’s specific needs, as long as the user knows what the requirements are for their application.

Contact us to help you to make the right choice.

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