Individual LED Lamp with Spectral Tunability
Easy to integrate into existing or custom systems
Overview | Specifications | Features | Software | Gallery | Resources and Support
Integrate a high power light source into your testing setup with this low cost LED lamp. The reliable, calibrated output is optimized to meet the solar spectrum for a Class AAA rating over a 15 mm diameter circular area for small device testing (using the latest IEC 60904-9:2020 International Standard). For your larger area testing setup, the lamp has a Class B spatial non-uniformity rating for areas up to 25 mm in diameter, and a Class C rating for diameters up to 32 mm.
Control each LED output individually and change the total irradiance output with our free software. Plus, the lamp can now be calibrated to test indoor photovoltaics according to the new IEC TS 62607-7-2:2023 standard.
Great Value with a Long Lifetime
Up to 10,000 operating hours
in your experiements
Minimal Warm-up Time
Efficient LEDs achieve 1000 W/m2 so you can start testing quickly
Customize Your Spectrum
Tune power output across the wavelengths with simple software
Designed to Suit Custom Setups
Easily build into your workstation
thanks to the small footprint
Why Choose an LED Lamp?
LED solar simulators offer several advantages over arc lamp solar simulators. They are cheap to run with high efficiency LED lights and require zero maintenance. Arc lamps, by comparison, waste a considerable amount of energy as heat and need at least 30 minutes to warm up. The Ossila LED Solar Simulator Lamp is ready to use just a few minutes after you turn it on.
Specifications
| Spectral match | A |
|---|---|
| Spatial uniformity over 15 mm diameter area | A |
| Spatial uniformity over 25 mm diameter area | B |
| Spatial uniformity over 32 mm diameter area | C |
| Temporal instability | A |
| Type | LED-Based, Steady State |
|---|---|
| Spectral Deviation | <70% |
| Spectral Coverage | >80% |
| Working Distance | 8.5 cm (3.35") |
| Irradiance* | 1000 W/m2 |
| Wavelength Range | 350 nm - 1000 nm |
| Maximum Lamp Time | 10000 hours |
| Dimensions (L x W x H) | 10.5 cm x 9.0 cm x 8.0 cm (4.13" x 3.54" x 3.15") |
| Weight | 600 g (1.32 lbs) |
* +/- 5% at working distance and calibration temperature.
Classification
The Ossila LED Solar Simulator is AAA rated for small area devices, which is ideal if you already use our 20 mm x 15 mm substrates. It also delivers class ABA illumination for testing large area devices which can be made on our 25 mm x 25 mm substrate systems. We individually calibrate each system with a NIST traceable photo radiometer and include a performance report with each unit.
The improved solar simulator has slightly increased spectral coverage across the visible spectrum, and reduced spectral deviation compared to previous versions, while still maintaining 1 Sun Irradiance between 380 – 1000 nm.
While both version solar simulators achieve AAA classification over a 15 mm area, the new solar simulator (released January 2026) has a marginally improved spectral match. Previous classification graphs (for Solar Simulators purchased before 2025) can be found on our Classification Data page.
Spectral Irradiance
The programmed spectral irradiance of the LED solar simulator is at 1 Sun (left). Automatically, the lamp emits a total integrated power of 100 mW/cm2 (1 Sun) over the wavelength range 350 nm – 1000 nm. Our LED solar simulator achieves a Class A rating within each wavelength range for small area devices.
Spectral Match
Spatial Uniformity
Temporal Instability
The spectral match classification measures how well an LED solar simulator replicates the solar spectrum according to wavelength distribution. The Ossila LED Solar Simulator achieves Class A output in all wavelength categories at 1 Sun irradiance.
At a working distance of 8.5 cm and output power of 1 sun, our solar simulator achieves a spatial non-uniformity Class A rating over a 15 mm diameter. It also achieves a class B rating over 25 mm diameter, and a class C rating at 32 mm diameter.
The temporal instability classification measures the output consistency. Our solar simulator easily achieves Class A temporal instability. Conduct long-term experiments or lifetime measurements without worrying about spectral fluctuation.
Low Cost, High Power
Source Reliable, Calibrated Light
A calibrated array of light emitting diodes reliably and accurately mimic the solar spectrum so you can have confidence in your photovoltaic testing procedures. Take advantage of a lamp with a long lifetime and good temporal stability, while benefitting from low running costs, zero maintenance, and no explosion risk.
Adapt the Spectral Output
Control each individual LED output and change the total irradiance output with the easy-to-use software. Spectral tunability gives you flexibility to align your testing with specific lighting spectrums conditions. This lamp can even be calibrated to test indoor photovoltaics according to newly defined standards.
Integrate into Custom Systems
A cost-effective choice for integrating a reliable, high power spectrum in your custom testing setup. Mount the lamp to a wide range of equipment using the bracket to expand your research capabilities in photosensitive applications. The small footprint protects your workflow in busy or confined workstations.
Software
The Ossila Solar Simulator Console enables you to control and customize the output of your LED solar simulator. You can choose the overall power level or control each LED individually to tailor the output to your specific requirements. The user-friendly software can be installed on as many PCs as you want and you can access future updates for free. You can also control the lamp using a serial command library. This can be useful for specialist measurements or non-conventional spectral output.
Software Requirements
| Operating System | Windows 11 (64-bit) |
|---|---|
| CPU | Dual Core 2 GHz |
| RAM | 4 GB |
| Available Drive Space | 152 MB |
| Monitor Resolution | 1440 x 960 |
| Connectivity | USB |
LED Solar Simulator Lamp Gallery
Mounting information
The solar simulator lamp comes with a permanent mounting bracket attached to the rear. This can be used to afix the lamp to a custom gantry. The dimensions and spacing of the mounting holes are shown below. All holes are unthreaded.
Resources and Support
Solar Simulator Light Sources
Choosing the right light source for your solar simulator is one the most important decisions to make when setting up a PV testing laboratory.
Read more...