MITSUBISHI ELECTRIC HC7000 - Manual (Page 3)

w/ aperture w/o aperture
Extra-low Dispersion (ED)
glass lens
Conventional projectors commonly have problems related to loss of light intensity; not so with the HC7000. Degraded
polarization results from the offset position of the liquid crystal elements. An optical compensation panel has been newly
developed and installed between the liquid crystal panel and polarization filter. This panel corrects the optical projection angle
and prevents light leakage, thereby preserving the intensity and realizing new heights in the level of contrast. Together with our
high-speed Diamond Black Iris, a high contrast of 72000:1 is achieved for the HC7000.
New Optics Compensation Panel Realizes Precise Light Focusing and
an Amazing Level of High-contrast Images
Superior image reproduction is provided using a 17-piece/14 cluster
optical system equipped with extra-low dispersion (ED) lenses.
Far exceeding the performance of conventional glass lenses,
chromatic aberration is virtually eliminated and resolution across
the entire screen, including the peripheral edges, is improved.
Equipped with a fixed aperture, reproduction of every shade,
from grays to the deepest of blacks, is ensured.
Extra-low Dispersion Glass Lens for Superior High-definition Resolution
Conventional sirocco fan Cooling structure adopted to
realize silent operation
HC7000 sirocco fan
Optical path
Vertical airflow
Cooling
fan Cooling
fan
New cooling structure
Output polarizing
plate group
Incident
polarizing
plate group
Liquid crystal panel
Optical path
Cooling
fan
Conventional cooling structure
A new cooling system is introduced for the liquid crystal panel. It includes a new cooling duct design for the new
chassis, a smaller fan motor and a large (low-noise) sirocco fan. As a result, a larger air-intake area is secured and
the fan operates at a slower speed, providing improved cooling efficiency owing to the hermetic performance of
the new chassis. The end result is industry-leading quiet operation of 17dBA (at low mode). Mitsubishi always aims
to produce the quietest projectors in the market.
Innovative Liquid crystal Panel Cooling System Design
Realizes Industry-leading Quiet Operation - 17dBA
(at low mode)
Experiencing is Believing The ultimate in black color reproduction.
Newly Developed Diamond Black Iris with 1/60-second Iris Control
Evolutionary advancements in the HC7000 include the adoption of Mitsubishi’s original Diamond Black Iris technology. The iris
section takes on a “diamond-cut” shape that prevents light refraction and realizes an enhanced level of contrast. True blacks are
clearly depicted even during sequences of continual bright-dark scene intervals, ensuring the reproduction of every detail with
vivid clarity. Combined together with Mitsubishi’s innovative contrast control, a perfect balance between blacks, the brightest
whites and the full color spectrum in between is achieved.
Previous Auto-Iris (HC5000)
New Auto-Iris (HC7000)
*as of July 2008, for projectors under 7.5kg (in-house study)
Conventional optical system
New optical compensation panel
Reproduction of
jet-black
Polarization filter Lens Screen
Linear polarization
Linear polarization
Elliptical polarization Light leakage
Linear polarization
Polarization filter Liquid crystal panel
Polarization filter
Polarization filter Lens Screen
Liquid crystal panel +
polarization filter