5
NOTE ABOUT MEASURING COLOUR TEMPERATURE (CCT)
SWORD Series incorporate the innovative VELVETLight technology based
on high-power LED triplets + Fresnel lens + CPU control software to
obtain the wide range of calibrated colour temperatures combined with a
high colour rendering index CCT.
We
We must remark that traditional color meters still in use today are
designed for a full spectrum source such as incandescent lights and
therefore cannot be used to accurately read the correlated color
temperature (CCT) of the light emitted by VELVETLight LED light fixtures.
The eventual diversions to green display as CC05M or CC10M in hand-held
color meters are due to these unaccuracy on reading of the light emitted
by LED and must not be considered.
To
To precisely measure the light emitted by VELVETLight and other LED light
fixtures a spectrometer specially calibrated for LED sources must be used.
VELVETLight guarantees pure white light and correct colorimetry of the
light delivered by its high power LED luminaries which have been
calibrated in laboratory according to CIE 13.3-1995 international standards
for measurement of the CRI and chromatic coordinates (x, and CIE-1931).
The
The reliability of this digital equipment is supported by the calibration
VELVETLight has made in laboratory by spectrophotometer, which
precision is half-yearly calibrated according to the National Institute of
Standards (NIST) of the United States and of the Physikalisch-Technische
Bundesanstalt (PTB) of Germany.
In
In order that the advanced VELVETLight luminaries could be used together
with other light sources, we have accurately calibrated both the CCT and
the chromatic coordinates to match them with traditional light sources
following tungsten and daylight standards.
The digital Control Unit allows a further and precise green/magenta
correction.
VELVET SWORD series are LED panels housing 16 high power LED
(SWORD2) / 32 high power LED (SWORD4). They have been specially
designed and their colorimetry calibrated for professional photography,
cinematography and television industry use.
VELVETLight luminaries main innovative features are:
Variable Colour Temperature with almost no lost in light output
Stable colour dimming
Green/magenta correction
Silent fan-free operation
High-power Phillips LED 50,000 hours life
High CRI digitally calibrated light
Robust aluminium construction
Digital control and through DMX
Flicker free up to 3,000 fps
High light output
Low power draw
innovations
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