Epson EB-TW8200 Caractéristiques et spécifications - Page 5

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A New Specification

Projectors have always had their brightness rated only for white light. However,

they may have very different colour brightness levels. The Colour Brightness

specification provides a new way for buyers to compare the holistic performance

(white and colour light brightness) of projectors to make a more informed

decision.

Epson

Colour Brightness 2600 Lumens

White Brightness 2600 Lumens

What is Colour Brightness?

As the term implies, Colour Brightness is a new international standard that

states a projector's colour light output in lumens. It measures the brightness of a

projector's red, green and blue light.

These are the measurements to look for:

Colour Brightness - Colour Light Output

White Brightness - White Light Output

Epson

* Compared against similarly-priced leading 1-chip DLP

through June 2012 (available from www.npd.com). Colour brightness (colour light output) measured in accordance with IDMS 15.4.

Actual colour brightness will vary depending on actual usage conditions. 3LCD

DLP

is a registered trademark of Texas Instruments, Inc. and its use here does not imply any affiliation with or endorsement by them.

EPSON 3LCD TECHNOLOgy – FOR BRIgHT, FAITHFUL COLOURS

3LCD projectors offer brighter and more accurate colours as they produce

different shades and hues by filtering, then mixing beams of the three primary

colours (red, green and blue).

In a 3LCD projector, white light is first split into the three beams of primary

colours. Each beam is then filtered through its own LCD that will give each

individual pixel of the image its exact brightness for each colour. The colour

beams are then perfectly recombined in a prism before being projected out as a

complete image.

•

An independent test by projector review media ProjectorCentral.com in 2009 of about 800 projectors found that on average,

3LCD projectors use 25% less power than single-chip projectors.

Competitor

Colour Brightness 750 Lumens

White Brightness 2700 Lumens

Competitor

business and education projectors based on NPD data from July 2011

is a registered trademark of Seiko Epson Corporation.

3LCD projector : RGB are projected at the same time, which makes the single composite image easy on the eyes.

SEE VIBRANT, REALISTIC COLOURS

WITH HIgH COLOUR BRIgHTNESS.

Why Does Colour Brightness Matter?

Even if a projector has high white brightness, it's Colour Brightness could be

as low as 1/3 of its white light brightness specification. With a projector that

has high Colour Brightness, you'll see vibrant, realistic colours; but if Colour

Brightness is low, colours can look dull and dark, skin tones can be reproduced

poorly and important details can be lost.

Epson

How to Find a Projector's Colour Brightness?

1. Look for separate Colour Brightness and white brightness specification.

2. Projectors with similar white brightness levels can have vastly different and

significantly lower Colour Brightness levels.

3. Many manufacturers may not want you to know their projectors are only 1/3

as bright when measuring colour.

White

2700 Lumens

Colour

2700 Lumens

Epson

www.epson.com.sg/colourbrightness

This compares to projectors using single-chip technology that actually project

individual colours sequentially by filtering their single white light beam through

a colour wheel, and then relying on human colour perception to combine the

colours in the viewers' minds.

As a result, 3LCD projectors also offer greater detail, smoother gradations, no

"colour breakup" effect, are easier on viewers' eyes, and consume about 25%

less power to achieve the same brightness compared to a single-chip projector

using a lamp of the same wattage.

Competitor

White

2700 Lumens

Colour

740 Lumens

Other 1-Chip Projectors