Epson ELPDC04, ELP-3000, ELP-3300, ELP-3500, Crystal Image Video Technical Brief
...
Contents
This technical brief provides detailed information on the following topics, related to all EPSON multimedia
projectors:
Image quality
Versatility
▼
Brightness
▼
Image clarity
▼
Keystone correction
▼
EPSON SizeWise™ resizing technology
▼
Flexible controls
▼
ELP Link IV software
▼
Flexible installation
▼
EasyMP and EasyMP.net
Image Quality—Superior brightness
All EPSON multimedia projectors include EPSON's integrated LCD prism technology. This technology is centered
on EPSON's patented optical engine.
Three-panel design:
EPSON's engine includes 3-panel Poly-Silicon TFT LCD's:
▲▲
Size ranging from 1.32 inches to 0.9 inches
Resolutions from SVGA to XGA to SXGA.
Improvements in the precision of this LCD structure has allowed
EPSON projectors to reach a superior level of brightness with a
combination of these five technologies, included in most EPSON
projectors:
1. UHE lamp:
The long-life Ultra High Efficiency (UHE) lamp uses a shorter arc
length. This shorter length is the primary factor in achieving higher
efficiency.
2. Polarization conversion:
EPSON's technology has improved the amount of parallel light
that moves through the LCD panels. More light passes through
each LCD because it is polarized without a filter.
Parallel light beam
Non-parallel light beam
EPSON-made Poly-Silicon LCD's are
manufactured to the highest standards.
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EPSON and EPSON Stylus are registered trademarks of Seiko Epson Corporation.
Other trademarks are the property of their respective owners.
Technical Brief—Multimedia projectors Page 2
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.)
Traditional LCD structure
Traditional LCD structure
Lamp light
Lamp light
Opposite
substrate
Optical glass Liquid crystal
TFTBlack matrix
Pixel electrode
Lamp light
TFT
substrate
EPSON's advanced LCD technology
Adhesive agent
Optical glass
UHA LCD structure
(on most EPSON projectors)
Micro lens
Opposite
substrate
Black matrix
Liquid crystal
ITO
Pixel electrode
TFT
Light shield
TFT
substrate
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 projectors produce
vs.
smooth, evenly lit images with
sharp contrast.
EPSON
PowerLite Projectors
Award-
➤
winning
projectors
EPSON Sales Training 3/01
EPSON and EPSON Stylus are registered trademarks of Seiko Epson Corporation.
Other trademarks are the property of their respective owners.
Competitive units can produce
"hot" centers with dark corners
and fuzzy contrast.
EPSON
Powerlite Projectors
Award-
➤
winning
projectors
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