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Product Code T2005E3
Price £2,200 ex. VAT

Simplify LED IVL characterisation for rapid results

A long-term and low cost LED characterisation and lifetime measurement system

Overview | Specifications | Gallery | Software | In the Box | Accessories | Resources and Support

The Ossila LED Measurement System provides a low cost and complete solution for performing current-voltage-luminance (IVL or JVL) characterisation of LEDs. The device holder has built-in light sensors to allow for illuminance, luminance, and white count measurements. To simplify device testing, the software will also calculate the current and power efficiency of your LED. Lifetime mode, meanwhile, measures the performance of the LED over an extended time under a constant voltage.

The system is compatible with all Ossila substrate systems, so it is easy to both fabricate and test LED devices. Please refer to the table under the specifications tab if you are not sure which model you should choose.

The Ossila LED Measurement System is covered by our FREE 2-year warranty and included in our FREE worldwide shipping offer.

Two-Year Warranty

Two-Year Warranty

Covered by the Ossila Warranty

Compact LED Measurement System


Designed for space-constrained environments

LED Measurement

LED Measurement

performing current-voltage-luminance characterisation of LEDs

Free Software

Free Software

intuitive PC software included

Looking for the Ossila OLED Lifetime Measurement System?

The LED Measurement System replaces the OLED Lifetime Measurement System. The new device holder and upgraded software package together add support for new characterisation measurements, but it is still easy to take OLED lifetime measurements with the LED Measurement System. If you are looking for a manual device, consider the Ossila Source Measure Unit.


Wavelength Range 400 nm – 1050 nm
Substrate Size 20 mm x 15 mm (0.79" x 0.59")
25 mm x 25 mm (0.98" x 0.98")
Substrate Compatibility T2005B - S211 (20 x 15 mm, PV and OLED)
T2005E - S2006 (25 mm Square, PV and OLED)
Overall Dimensions (W x H x D) 151 mm x 50 mm x 300 mm (9.94" x 1.97" x 11.81")

What is an IVL (or JVL) measurement?

IVL, or current-voltage-luminance, is the main method for electrically characterising light emitting diodes (LEDs). In IVL measurements, the current (I or J) passing through a device and the emitted light are measured as an applied voltage (V) is swept between two points. From this measurement, multiple properties can be determined, including the luminance (L), current efficiency, and power efficiency (also known as efficacy).

LED Measurement System Features

Rapid Characterisation

Rapid Characterisation

Our intuitive software (included) makes it easy to take current-voltage-luminance measurements. The system records illuminance, luminance and white count. To speed up the characterisation process, the system will then calculate both the current efficiency and power efficiency of your LED.

Wide Measurement Range

Wide Measurement Range

The built-in Source Measure Unit is capable of delivering voltages between -10 V and +10 V, with a maximum resolution of 170 μV, measuring currents from as low as ±10 nA up to ±200 mA, and illuminance up to 100 klx.

Intuitive Software

Intuitive Software

Our intuitive PC software (included) makes it faster and easier to characterise LEDs. Create and save settings profiles, plot your data in real time, and export the results as a CSV file. Intuitive software for performing current-voltage-luminance measurements and constant voltage stability measurements. Collecting data is as simple as entering your experimental parameters and clicking measure. Data is plotted in real-time as it is measured, with the ability to select which data is plotted on each y-axis. All data is saved to CSV files so that you are never locked into one ecosystem. Settings profiles can be created so that you can quickly and easily repeat your measurement or perform similar scans. Available to download from our website at any time. Future updates are provided at no extra cost.

Measure Device Stability

Measure Device Stability

By applying a constant voltage and measuring the current, luminance, and efficiency over an extended period of time, the stability of LEDs can be tracked and analysed.

Quick and Easy

Quick and Easy

Plug in the system, install the PC software, and you're ready to go! The Ossila LED Measurement System has been designed by research scientists to address the frustrations associated with measuring and characterising LEDs. The intuitive interface and clean design make the system simple and easy-to-use.

LED Measurement System Software

The LED current-voltage-luminance measurement is controlled using intuitive and user-friendly PC software. All of the measurements can be fully customised so that you can tailor the software to your experiment.

With the PC software, you can:

  1. Perform current-voltage-luminance measurements anywhere between -10 and 10 V.
  2. Take high resolution measurements, with voltage increments as low as 1 mV.
  3. Manage the experiment more directly, with custom settle times between applying voltage and measuring current.
  4. Measure illuminance, luminance, white count, current efficiency, and power efficiency using the built-in sensors.
LED IVL Software
LED IVL Software

The software has two measurement tabs: characterisation and lifetime. Characterisation mode performs I-V measurements of LEDs while measuring the illuminance, luminance, white count, and calculating the current and power efficiencies. The lifetime mode enables you to set a constant voltage and measure the performance of the LED over an extended time.

Included with the Ossila LED Measurement System

  • Ossila LED Measurement System
  • USB-B cable
  • 24 VDC power adaptor
  • LED IVL Software

Accessories and Related Products

Resources and Support

OPV and OLED Fabrication Guide

Ossila’s pre-patterned ITO substrates are used for a wide variety of teaching and research devices (both organic and inorganic) where a high-quality ITO surface is required. Fabricating devices using these substrates is designed to be quick and easy. In this guide, we demonstrate how to make standard OLEDs and OPVs.

Learn more...
OLED Testing Guide OLED Testing Guide

This guide gives you an overview of what to consider when characterising an OLED, as well as tips for their measurement.

OLED Substrate (Pixelated Anode) System Overview OLED Substrate (Pixelated Anode) System Overview

The schematics below show the layout of the substrates along with the available deposition shadow masks. The pixelated anode substrates come with six ITO fingers which define the pixels plus an additional cathode bus-bar.

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