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LIVES: LED LIV and Emission Spectrum Testing Solution

LIVES: LED LIV and Emission Spectrum Testing Solution. W2 Laboratories 2010.12.30 WWW.W2LAB.COM. Basic Configuration. Hardware Source meter: Keithley 2400 or 2600 serial Spectrometer: Instrument Systems, Ocean Optics, or StellarNet Emission image capture: any TWAIN compatible camera

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LIVES: LED LIV and Emission Spectrum Testing Solution

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  1. LIVES: LED LIV and Emission Spectrum Testing Solution W2 Laboratories2010.12.30WWW.W2LAB.COM

  2. Basic Configuration • Hardware • Source meter: Keithley 2400 or 2600 serial • Spectrometer: Instrument Systems, Ocean Optics, or StellarNet • Emission image capture: any TWAIN compatible camera • Optional temperature monitor • Optional switching box (multi cell reliability test) • Software • Voltage, current, and pulse sweep functions • Panels for manual control and fully automated test script running • User configurable parameters in UI and configuration files • Scripting capability for testing with different configurations • Color rendering calculations for CRI and the new NIST CQS • Fast data plotting tool for multi-device comparisons • SQL database for R&D analysis and production SPC • System • Custom design per customer requirements

  3. Measurement Capability • DC Voltage Sweep • Up or down sweep with different compliances for forward and reverse bias • User defined test points • DC Current Sweep • LIV curve for up or down sweep • LIV curve for arbitrary current list with emission spectrum and image captures • LIV and spectrum for user defined test points • Pulsed Current Sweep • Synchronized current pulse generation and voltage & power measurements with Keithley 2602A dual channel source meter. • User configurable pulse parameters (peak, width, and duty cycle) • Spectrometer synchronization • Spectrum Analysis • Color quality calculations: • CRI (color rendering index), widely used • CQS (color quality scale), the latest NIST development • One- or dual-peak Lorentzian fit for peaks and FWHMs

  4. Example – Manual and Test Panels

  5. Example – Script Panel

  6. Example – Data Review

  7. Who are we? • Profile • Founded in 2000 • 3 partners with PhD in physics, EE, and robotic engineering • Other loosely associated engineering members • Alliances with other engineering firms in the area • MRATek,, SVOTek, OAI • Capability • Custom systems: testing, automation, burn-in, life test • Hardware: custom electronic boards and testing fixtures • Software and firmware • System integration • Industries served • Photonics and optoelectronics • Diode lasers, LED, solar photovoltaic, passive optic components • Others: disk drive, MEMS, and display

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