Sony VPL-CS21 Brochure & Specs page 6

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Bright Images
Brighter Mobile Projection.
Benefits of 3LCD Technology
With a separate LCD panel for each primary colour, you get bright,
natural images that are so easy on the eyes.
Bright Images
3LCD projectors divide the light emitted from the lamp into the three
basic colors of red (R), green (G) and blue (B). Each colour light
shines through separate liquid crystal panels (HTPS type) that give
shape and movement to the final image on the screen. Therefore,
light efficiency is excellent as the three basic colors are projected the
entire time when the projector is on. This ensures that users see an
image that is both bright and sharp.
Natural Images
Sony 3LCD projectors produce accurate colours. Each primary colour
is carefully controlled and recombined, such that subtle expressions
in gradations and shadows are accurately reproduced.
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Natural Colour
Reproduction
Gentle on the Eyes
3LCD technology enables projection of stable and flicker free images
that are gentle on the eyes. With 3LCD, there are no problems with
colour breakup - otherwise known as the rainbow effect - that can
affect some projection systems. This makes superb reproduction of
moving images.
High Brightness 2100 ANSI Lumens
Incorporating Sony's original 0.63-inch LCD panels and new 165W
lamp, the VPL-CX21 and VPL-CS21 can reproduce bright images
at 2100 ANSI lumens.
Sony's unique optical unit.
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Vivid Images