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SpectroRadiometer
Systems
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Measure the
spectral output of just about any light or luminaire
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Light Measurement
Systems include a miniature spectrometer, a fiber optic cable
(or direct attachment), a light collecting accessory/integrating
sphere, and a NIST traceable intensity calibration
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Real-time
1931 CIE Chromaticity diagram for xy Chromaticity, Dominant
Wavelength, Purity, and Correlated Color Temperature (CCT)
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Spectrometer
configurations available to cover the 200-1700nm range
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The StellarNet
model spectrometers are great tools for low cost, routine
analysis of all types of light. From measuring the irradiance
of standard light bulbs to measuring the exact color coordinates
of the yellow in a traffic light, StellarNet spectrometers
are used worldwide to routinely analyze light. These instruments
are calibrated to measure the spectral irradiance, radiance,
or Watt flux over the wavelength range in nanometers provided
by the selected spectrometer model.Currently, StellarNet
offers Radiometer systems in the 200-1700nm range!
SpectraWiz
Software can calculate many important values such as lumens,
xy chomaticity, dominant wavelength, Correlated Color Temperature
(CCT), and much more.
The the
bottom of the page details the various ranges for each StellarNet
Spectroradiometer. The BLUE and GREEN-Wave models, BLACK-Comet
concave grating model, and RED-Wave-NIRInGaAs model can
be configured to have the correct slit size and detector
array to suite your application. Calibrated spectroradiometers
can be used to measure absolute intensity, xy Chromaticity
(CIE 1931), purity, correlated color temperature, and dominant
wavelength.
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Typical System consists of a BLUE-Wave Spectrometer,
Fiber Optic Cable, 6'' Integrating Sphere, and a Radiant
Flux calibration in Watts/nm |
SpectroRadiometer
Test Reporting Software
The SpectroRadiometer Test Report Software now enables customers
to prepare and instantly display all of the relevant test
data on one sheet making quality control and R&D efforts
much more efficient. Instantly acquire a complete spectrum
of your test light source and view its color distribution
with an under the curve wavelength color representation. This
spectral curve allows for easy identification of color distribution
of your light source. |
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Total Power (Watts and Lumens)
- Efficiency
& Efficacy
- CIELAB
with the xy/u’v’ chromaticity
- CCT
(Correlated Color Temperature)
- PAR
- Dominant
wavelength
- Percent
color purity.
- CRI
(Color Rendering Index)
- CQS
(Color Quality Scale)
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Experimental
Setup for Laser, Laser Diode, and LED characterization.
Larger Spheres such as IS6 and IS12 can be used in place
of low cost IC2.
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NIST
Calibrations
StellarNet Calibration ServicesThe factory performs calibrations
for the appropriate wavelength range of your spectrometer using
NIST traceable calibration lamps (calibration service IRRAD-CAL
must be ordered with spectrometer and proper measurement accessories)
Fast delivery:
most system can be calibrated and shipped within 1 week after
receipt of order.
Absolute
calibration: accuracy within 10% at detector integration setting
used for calibration.
Certificate
available: documentation with NIST traceable serial numbers.
If the user
has an appropriate irradiance calibration source lamp, a field
re-calibration can be easily performed using the included
SpectraWiz software.
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Low Light Configurations
Many popular applications involve measuring the irradiance of light
sources with low output intensities. From ambient streetlight to UV-LEDs
many people need to detect low levels of radiation. StellarNet spectrometers
can be specially configured to measure these low light levels. The
spectrometer aperture or slit can be adjusted to allow more light
into the unit, thus making it more sensitive to radiation. For low
light applications a 200um slit is the standard slit size. Additionally,
low light level calibrations can be employed to further optimize the
spectrometers ability to see low light levels. And lastly, a TEC cooler
can be installed on the detector array to increase the signal to noise
of the unit by 66%. This in affect allows the spectrometer to integrate
over longer periods of time, collecting more and more photons, while
keeping a low noise value. If you have a low light application be
sure to discuss the configuration of your spectrometer. |
Bright Light
Configurations
In contrast, many industries require the measurement of really bright
light emission. StellarNet spectrometers have a dynamic range of
6 decades allowing integration times from 1ms to 65s. StellarNet
spectrometers can be specially configured for high power applications.
The limitation of a high power radiometer will be limited by the
power of the calibration source. StellarNet can configure Spectroradiometers
to optimize calibration thus allowing the use of the units large
dynamic range and detector linearity to allow high power light measurement.
Additionally, smaller slits, fibers, and integration spheres can
be employed to decrease the signal to the spectrometer. StellarNet
offers a high light level calibration to further optimize the system
performance.
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| SpectroRadiometer
Sample Spectra |
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SpectraWiz Software displaying 1931 xy chromaticity diagram measuring
the color and Correlated Color Temperature (CCT) of an LED.
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SpectraWiz Software allows the users to select the irradiance units.
Additionally, scroll down menus allow the user to select their collection
accessory in order to calculate radiant and luminous flux.
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BLACK-Comet spectrometer
calculating LUX values of a bright source. StellarNet spectroradiometers
are all calibrated first with base units of irradiance in W/m^2. SpectraWiz
software applies different factors and algorithms in real-time to
calculate your favorite comparison value (e.g. Lumen, footcandle,
CCT, etc).
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Dual DSR Spectroradiometer
Halogen-lamp spectra (300-1700nm). StellarNet Dual DSR system pictured
above uses a Y bifurcated fiber (F600-Y-UVSRNIR) to connect a BLACK-Comet-SR
spectrometer and a RED-Wave NIR Spectrometer. The entire system can
be radiometrically calibrated over the range 200-1700nm. Above system
pictured with Flash Capture Interface (FCI) that allows spectrometer
to capture emission from flashing sources such as flashtubes and pulsed
solar simulators.
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