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40-55%
100%
LIGHT UP WITH LEDs
REAL LIGHT OUTPUT
from the fitting
LIGHT OUTPUT
DRIVER
OPTIC
TEMPERATURE
BIN
WHITE
LIGHT OUTPUT
from the supplier
6.
Different from the traditional
sources that have a wide beam
angle, LEDs emit a light with a
solid angle of less than 180°,
which assures the minimum
waste of light and guarantees
high efficiency of the source.
In order to obtain the highest
efficiencies from the LEDs in the
lighting systems, Simes studies
and develops the best optical
systems for these LED circuits,
maximising their performance.
Both medium/wide beam and
narrow beam optics are available
directly from the catalogue
, in
order to satisfy a range of project
requirements.
1. DRIVER
The ballast and electronic components
of the fittings absorb a good percentage
of the output produced from the light
source. Simes chooses only components
from entrusted partner that can guarantee
the maximum performances with the
minimum absorption.
2. OPTIC
The optics of a fitting are fundamental aids
for the LED, because they help to channel
the output emitted from the source, in a
defined solid angle. The quality of optics
and reflectors from Simes begins with
the selection of raw materials used for
their production and continues with the
search of their best index of performance
obtainable. This calculation is carried
out by Simes using OPTIS, a high tech
software package for the theoretical
calculation of the maximum output from
a determined design. The photometric
hypothesis that is derived, is supported by
the actual measurements achieved in the
Simes IMQ accredited laboratory, giving
certified data on the performance of the
reflector.
3. TEMPERATURE
During operation, all LED light sources
develop heat due to the flow of current
in the semiconductor. Every source works
with its own specific junction temperature
which must be controlled to avoid
reducing the useful life of the source even
in continuous operation. Simes undertake
thermal tests to measure the stresses on
the sensitive zones of the chip, to verify
the thermal conformity of the radiating
zones of the fittings and of the LEDs
inside them.
4. BIN
The bin identifies the quality of the LED
for colour, output and working voltage. In
order to assure the quality of the lighting
system, Simes has standardized a bin
of reference for its suppliers. It has a
specified colour range, inside of which
the human eye does not perceive any
variation and the efficiency is almost
uniform for all LEDs from that bin.
Before being integrated into the fittings,
the lighting sources selected are studied
in the photometric laboratory at Simes
and issued with an IMQ performance
certificate, that attests its real efficiency
during operation.
5. WHITE
The white colour of the LED is obtained
from LEDs with blue emission, which are
deposited with phosphorus that modifies
the spectrum emission. The gradation
from cold white to warm white is directly
dependent on the amount of deposited
phosphorus. Therefore the tonality of the
warm LED will have a lower efficiency
than the cold tonality, but will have
the best colour rendering. Simes will
scrupulously selects the binning of the
white assuring the quality of the colour
and the performances of the LED.