Bright Images
3LCD projectors separate light from the projection lamp into red, green and blue colors. Each color is shone through individual liquid crystal display panels (made of high-temperature polysilicon, known as HTPS) that give high definition and movement to the projected image.
Light efficiency is excellent because the three primary colors are projected the whole time the projector is on. This ensures that users view an image that is both bright and sharp.
High Colour Light Output
With the fast-paced development of high-definition, rich colour video and projection content, the quality and impact of the color produced by a projector has become extremely important. To date, buyers and users have had no way to determine if their projector is capable of producing rich, vivid color. Colour Light Output addresses this issue and provides an important picture-quality indicator for classrooms, conference rooms and living rooms.
What is Colour Light Output?
Colour Light Output (CLO) is a specification that provides never before available information on a projector’s ability to deliver colour. Developed by colour scientists using the same approach as White Light Output (Brightness) measurement, Colour Light Output provides the buyer additional information about colour.
Why is Colour Light Output Important?
Colour Light Output is critically important because it measures the brightness of Red, Green and Blue. Red, Green and Blue create white when combined in the right proportions. They also comprise the input signal that tells your projector how to reproduce the colour image. If a projector produces bright Red, Green and Blue that when combined equal the brightness of white, then beautifully balanced colour is possible. Colour Light Output provides users with a way to evaluate projector colour output and make better buying decisions.
Understanding Brightness and Colour
Current product specifications such as Brightness (or White Light Output), Contrast Ratio and Resolution give no information regarding a projector’s ability to reproduce color.
There are vast differences in the Colour Output of projectors on the market today. Look at the images below from two competing projectors.
Colour Light Output specification describes the difference in colour between these two projectors.
How is Colour Light Output measured?
Brightness (or White Light Output) measures the total amount of white Light projected in lumens on a nine point grid. It does not measure colour.
Colour Light Output uses 3 sets of a nine Point grid to measure the primary Colours red, green and blue, using the same approach used to measure White Light Output in lumens
How should Colour Light Output be used?
Colour Light Output should be used with White Light Output to provide insight into a projector’s overall picture quality. Two things to remember:
- 1. Select High Colour Light Output
- 2. Make sure the Colour Light Output equals the White Light Output.
When selecting a projector ask for the Colour Light Output measurement.
* TFC Brand Strength Study 2008
**Projected images may vary among projectors with different color light output, or according to the type of image.
**Actual photographs of images produced by 2 competing projector technologies run in default mode. Price, Resolution and Brightness (White Light Output) are the same for both projectors.