Wolf Cinema DLD-380FD - Manual (Page 6)

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Figure 4: A UHP Lamp Failure Causes a Dark Screen but
a Laser Diode Failure only Reduces Brightness Slightly
Wolf Cinema’s new DLD-380FD projection ensemble builds upon our on-going commitment
to provide high performance imaging solutions that meets these needs – and also raises the bar
in a number of key areas.
High Reliability
Home theater projectors are often used between 3-4 hours a day – and in many instances
even longer, when enjoying the wide variety of film, television and gaming content available today.
Ultimately, a home theater enthusiast’s satisfaction is highest when all system components,
including the projector, work reliability and with minimal downtime. The DLD-380FD easily meets
and even exceeds these requirements.
In a typical projection system, the lamp is the primary component that requires constant
maintenance and regular replacement. In our BLU-Escent laser-phosphor design, there is no lamp to
replace and thus can be considered nearly “maintenance free” for extended periods. The laser
illumination components are designed with lifetimes of up to 20,000 hours or more, depending on your
usage. This means you can enjoy a 2-hour movie every night for over 27 years [!], without ever having to
replace a lamp. In addition, this saves on the projector recalibration costs, since the laser module does
not require special adjustments over time.
As with all video projectors and other sensitive electronic components, heat buildup is the
main concern. Proper thermal management is critical for all video projection systems, and the
DLD-380FD is no different in that regard – but unlike a lamp that can fail due to excessive heat,
here we need to protect the blue laser assembly and phosphor wheel.
The BLU-Escent system uses an
aluminum substrate for the phosphor
wheel, which has its own dedicated fan to
keep cool air moving across the wheel.
This design helps maintain a constant
wheel surface temperature and reduces
phosphor aging [but at some cost to
overall SPL levels; this projector runs
slightly louder than others, between 42-
48 dB]. This successful design keeps the
entire laser illumination assembly running
at very stable operating temperatures,
while maintaining excellent light output
levels over extending viewing times.
The blue lasers are semi-conductor devices that will in fact degrade slowly over time. But, if
one laser should fail catastrophically, there are several blue lasers still operating so the projector