Simultaneous Thermal, Optical and Electrical Characterization of LEDs
FEATURES:
- Wide dynamic range allows a single sphere to measure a wide range of light levels
- NIST traceable standards for in-house recalibration
- Spectral results in milliseconds
- Spectraflect interior sphere coating
- Complete thermal, optical & electrical analysis
- TEC temperature control and monitoring
- Measure optical properties as a function of temperature and operating current
- Available in 0.5m, 1m, 1.65m, and 1.95m sphere diameters
- Conforms to IESNA LM-79 & LM-80 measurement geometries
- Ambient air temperature control available
MEASURE:
- Total Spectral Flux
- Luminous Flux
- Radiant Flux
- Chromaticity
- CCT and CRI
- Peak Wavelength
- Dominant Wavelength
- I, V, and Luminous Efficacy
- Thermal: Case Temperature Control vs. Electrical and Optical Parameters
APPLICATIONS:
- Packaged LEDs
- Modules & Arrays
- Backlight Displays
- Solid State Lighting
Labsphere's illumia®pro Light Measurement Systems allow users to quickly, accurately, and simultaneously measure the optical and thermal characteristics of various LEDs and arrays.
LED manufacturers, integrators and users are paying more attention to the thermal and electrical characteristics of LEDs because thermal variances at the junction can affect an LED's performance in terms of color, output, life expectancy, luminous efficacy and linearity performance.
Labsphere illumia®pro Light Measurement Systems are available in sphere sizes ranging from 0.5 meters to 1.95 meters, each designed for both 2pi and 4pi measurement geometries. The base system consist of a Labsphere lamp measurement integrating sphere, high resolution CCD array spectrometer, electrical/thermal plate and temperature controller, auxiliary lamp and Agilent® precision variable current power supply. Our powerful illumia®pro software is provided with each system. A required Keithley®2400 series SourceMeter®, purchased directly from Labsphere or provided by the customer, can then be integrated into the base system. This gives customers flexibility to choose an appropriate model or integrate a currently owned SourceMeter® into the system.
SPECTROMETERS
SMS-500/510
The highly sensitive SMS-500 and SMS-510 Mini CCD Array Spectrometers offer low noise and a broad spectral response with calibrated ranges from 360 to 1000 nm or 300 to 1050 nm.
Within the illumia®pro thermal measurement system, the spectrometers avoid the inherent photometric errors associated with filter-based photometers. Data is accurate even for narrow-band light sources such as LEDs, fluorescent lamps, and discharge lamps.
The Labsphere SMS-5x0 CCD Array Spectrometers are multi-channeled spectral analyzers designed for real-time spectral analysis. Instantaneous spectral acquisition provides the radiometric, photometric, and color characteristics of the device under test (DUT). Fast results help to increase the rate of product development, decrease the time to market, and reduce development costs.
SMS Datasheet
Keithley®
SourceMeter® Options
We are pleased to offer the Keithley® 2400 Series SourceMeters® for optimum operation of the illumia®pro systems. Our sales engineers can assist you in choosing the right model for your application.
The Keithley® SourceMeter® is a required component for operating the illumia®pro systems. For user convenience, the instrument can be supplied by the user and sent to Labsphere for integration into the electronics rack, or it may be purchased directly from Labsphere.
TEC Thermal Element
FEATURES:
- Complete thermal, optical, and electrical analysis
- Automated data acquisition and analysis
- TEC temperature control and monitoring
- Measure optical properties as a function of temperature and operating current
Lamps
Auxiliary Lamps for Absorption Correction
Industry standards and Labsphere recommend applying absorption correction techniques. Self-absorption correction is critical, since the physical size and shape of SSL products and lamps under test are typically very different from the reference lamp size and shape. The use of an absorption correction lamp can correct for self-absorption errors.
Lamp assemblies mount onto a Labsphere 1-inch port frame and auxiliary lamp port on Labsphere light measurement spheres with no modifications required.
Lamps
Calibrated Lamp Standards
Labsphere's Total Spectral and Total Luminous Flux Lamp Standards are selected for their stability and reproducibility. Each lamp has been carefully screened, seasoned, and calibrated in our Optical Calibration Laboratory under the guidelines recommended by the IESNA (Illuminating Engineering Society of North America) to provide the highest degree of accuracy. A calibration certificate verifying traceability to NIST is provided with each lamp.
Lamps
Calibrated Forward Flux Standards
Labsphere's Lamp Standards of Total Spectral Flux provide an exceptional artifact for calibrating integrating sphere spectrometers for total spectral radiant flux responsivity from 350 nm to 1050 nm. Labsphere's Lamp Standards of Forward Spectral Flux are selected for their stability and reproducibility. The selected lamps are then calibrated directly to the NIST lumen, for a calibration result you can rely on.
Agilent®
Agilent® A3634A Programmable DC Power Supply
This single output power supply gives you the flexibility to select from a dual output range. Therefore you can drive the Calibration Lamp and the Auxiliary Correction Lamp from one power supply. The output load is protected against overvoltage and overcurrent, which is easily monitored and adjusted from the front panel and illumia®pro software.
POWERFUL, ACCURATE illumia®pro SOFTWARE
The illumia®pro Software, provided with the illumia®pro system, provides a powerful, yet easy-to-use menu driven operating environment. It allows users to control the LED temperature and operating current at specified ranges. This control enables the software to measure and characterize the device under test (DUT) over a wide range of temperatures.
System software automates procedures for measuring the spectral characteristics and controlling current and temperature. Software simultaneously collects electrical, optical and thermal data which is graphed and viewed on screen or can be exported to Excel® format for further analysis.
MEASUREMENT FUNCTIONS
- ILV @ constant T: step & control I, stabilize T, measure L & V
- VLI @ constant T: step & control V, stabilize T, measure L & I
- TLV @ constant I: step & control T, stabilize T, measure L & V
- TLI @ constant V: step & control T, stabilize T, measure L & I
- ILV/T: perform ILV @ constant T, step T and repeat at each T
- VLI/T: perform VLI @ constant T, step T and repeat at each T
Key:
L = Lumens
V = Voltage
I = Current
T = Temperature
SOFTWARE FEATURES
- Binning for flux and color
- Convenient menu driven operation
- Measured data displays in Real-Time
- Displays current and voltage settings on screen
- Easily enter LED and SSL information for test identification
- Displays LED, lamp standard and auxiliary lamp parameters
- Automatically generates data and test reports
- Allows for easy export to database programs for further QC Analysis
SOFTWARE OPERATING ENVIRONMENT
- Windows XP, 7, or VISTA - 32 bit operating systems
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