JVC DLA-HD750 - Manual (Page 4)

◆ The industry’s highest* native contrast ratio of 50,000:1!
Changing the structural design of the optical section from a conventional L-shape to a straight
configuration helped to reduce light leakage and by combining this new structure with a highly
efficient lamp, a brightness of 900 lumens** was realized. What’s more, integrating JVC’s
proprietary D-ILA device with the wire-grid optical engine provided very high contrast. And, by
equipping the newly developed lens with a fixed aperture to help eliminate unnecessary light that
reduces contrast levels, it was possible for the DLA-HD750 to achieve the industry’s highest
native contrast ratio of 50,000:1*.
Thanks to enhanced brightness created by the extended white peak as well as the wider dynamic
range for a deeper black, images are vivid and full of depth, making them perfectly suited for all
types of content, including movies, music video as well as live concert and sports programs.
* As of September 2008; native contrast of 50,000:1 for home theater projector class (JVC survey).
Native contrast ratio of 30,000:1 for the DLA-HD350.
** 1,000 lumens for the DLA-HD350.
◆ Advanced video processor
Both projectors incorporate the HQV Reon-VX video processor
developed by Silicon Optix. To ensure excellent image reproduction,
this processor features precision I/P conversion and scaling with full
10-bit 4:4:4 signal processing as well as an HQV noise reduction
function to block mosquito noise.
◆ High-performance 2x motorized zoom lens
The newly developed high-performance 2x zoom lens with
motorized focus features a large diameter, all-glass lens system
with 17 elements in 15 groups that includes 2 ED lenses to
project a full HD image with exceptional depth. And to display the
deepest black possible, this new high-precision lens is also
equipped with a 16-step* lens aperture that allows adjustment of
brightness according to user preferences and usage
environment. What’s more, the high-precision lens also reduces
chromatic aberration and color bleeding significantly.
* 3-step for the DLA-HD350.
Transmitted
polarized light (P)
Glass substrate
Reflected polarized light (S)
Aluminum ribs
Non-polarized light
How the wire-grid polarizer works
The 0.7-inch full HD D-ILA device can display
peak whites and deep blacks within the same
frame. This provides extremely sharp
contrast for more vivid and natural color
reproduction.
50,000:1
3,000:1
~5,000:1
Iris off Iris on
Lamp
beam
Lamp
beam
50,000:1
White
Black
50,000:1 contrast ratio 50,000:1 native contrast ratio
Conventional projector with dynamic iris DLA-HD750
The dynamic iris is
opened for bright
scenes to make
peak values
brighter while at
the same time
making black level
lighter than it
should be.
Conventional projector DLA-HD750
The dynamic iris is
closed for dark
scenes to make
black level appear
darker while at the
same time making
peak values darker.
◆ 6 Point Custom Color Management (DLA-HD750)
The DLA-HD750 features Color Management that interpolates colors
individually by R, G, B, C, Y, or M, in three separate axes of color
phase, chroma saturation, and brightness. Up to three
customized color settings can be stored for future use.
◆ Customized gamma control on-screen
Manual adjustment of gamma curve is possible via an on-screen
display, allowing the viewer to adjust projector luminance levels by
either increasing contrast in scenes that are too dark or dimming
washed-out scenes to ensure precise brightness levels suited to
individual preferences. Up to three settings can be adjusted and
stored for future use.
Custom color setup
performed via on-screen menu
Custom gamma setup performed
via on-screen menu
Before adjustment After adjustment