TrueSource
®
Technology
After significant research and development efforts, Prism Projection has solved many of
the problems associated with LED based lighting devices developing the TrueSource
®
system. TrueSource assures color consistency by utilizing active live color metering,
achieves a full spectral response by using carefully selected multiple primary emitters
and provides a consistent flat field with next generation optics and reflector systems.
Live Color Metering
At the heart of every TrueSource system is a Tristimulus color sensor. Tristimulus
sensors, while electronic, actually “see” in a way that mimics the human eye’s response
to color. Even though every human sees color differently, there are well established
base lines for normal color response. By taking live measurements and adjusting how
each LED or group of LEDs is being driven, the problems of color shift during use are
removed. Tristimulus values are referenced to the well established CIE 1931 2°
observer color space. By referencing a standard, TrueSource systems are inherently
calibrated to each other. The problems of using only an initial calibration and predictive
algorithms are not an issue with TrueSource systems.
Full Spectrum
TrueSource systems use several colors of primary emitters. At the minimum each
TrueSource system will use 5 primary colors. These primaries are carefully chosen to
minimize the valleys of the SED curve. When outputting 3200k “white”, TrueSource
systems have a CRI of 95+. With deep understanding of how to drive each individual
LED, TrueSource is not locked into only using a fixed number of primary emitters.
TrueSource is also flexible enough to utilize LEDs from several manufacturers at once.
With this discreet control, TrueSource systems can pick from the best available LEDs on
the market.
Since all TrueSource enabled instruments are structured to provide a full spectral
response, they have a very wide gamut.
Interfacing with Color
TrueSource systems allow the designers and operators to ask for and interface with
color in very specific ways not normally seen in current lighting equipment.
Instead of asking designers to describe color in a non-standardized way, ie. unknown
RGB values, RGBW, RGBA, RGBCA, or seven discreet primaries. TrueSource
Prism Projection Inc. - RevEAL Studio Operating Manual
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