Epson 7850p - PowerLite XGA LCD Projector Breve descrizione tecnica - Pagina 2

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Epson 7850p - PowerLite XGA LCD Projector Breve descrizione tecnica
Technical Brief—Multimedia projectors

3. High aperture LCD panels:

The UHA (Ultra High Aperture) has increased the aperture ratio which allows more light through the lens.
EPSON produces the highest aperture LCD's, which are more transmissive.

4. Micro Lens Array:

MLA is a layer of the LCD composed of quartz crystal lenses. Each pixel has a dedicated lens that focuses and
maximizes the throughput of light from the lamp. MLA allows more light to pass through each pixel, more
than twice the light of LCD's of two years ago. (Not included on all EPSON projectors.)

5. "Metal Sandwich" technology:

A light shield of metal between the pixels blocks the light leakage. Cross-talk between pixels is reduced,
resulting in clearer, crisper images. (Not included on all EPSON projectors.)
Lamp light
Lamp light
Opposite
substrate
Optical glass
Image quality—Image clarity
EPSON projectors producte astonishingly clear, sharp images with a combination of these three technologies:
1. High illumination ratios:
The illumination ratio measures the relationship of the darkest spot (the corner) to the brightest spot on the
screen (the center). The higher the ratio, the more uniform the brightness.
2. High contrast ratios:
Contrast ratio measures the difference between the light and dark areas of the image. The higher the ratio the
sharper, more colorful, and more lifelike the images appear.
EPSON Sales Training
Traditional LCD structure
Traditional LCD structure
Black matrix
TFT
Pixel electrode
TFT
substrate
Liquid crystal
EPSON projectors produce
smooth, evenly lit images with
sharp contrast.
EPSON
PowerLite Projectors
➤
Award-
winning
projectors
EPSON and EPSON Stylus are registered trademarks of Seiko Epson Corporation.
Other trademarks are the property of their respective owners.
EPSON's advanced LCD technology
UHA LCD structure
(on most EPSON projectors)
Micro lens
Adhesive agent
Lamp light
Opposite
substrate
Optical glass
vs.
Competitive units can produce
"hot" centers with dark corners
and fuzzy contrast.
EPSON
Powerlite Projectors
➤
Award-
winning
projectors
Black matrix
ITO
Pixel electrode
TFT
Light shield
TFT
substrate
Liquid crystal
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