When you require a large area, highly uniform light source for camera and image sensor calibration, the SpectralLED® VIS SWIR Tunable Light Source delivers brightness, radiometric stability and wavelength accuracy that is unmatched in the industry.

The SpectralLED Tunable Light Source incorporates up to 31 discrete visible wavelengths and 10 shortwave infrared wavelengths for synthesis of commercially available light sources or based on spectra that you import. The platform is easily adaptable for automated test systems and production line integration, with integrated optical feedback and temperature control to ensure rock-solid stability and consistent results.


  • Camera and image sensor calibration
  • Photodiode detector responsivity characterization
  • Diagnostic medical imaging
  • Technical and industrial imaging

Unprecedented Resolution and Accuracy For Camera & Image Sensor Calibration

  • Wavelength options from the UVA to the shortwave infrared
  • Built-in RMA spectral fitting for simulation of user imported spectra
  • Constant current drivers & built-in optical feedback ensure accurate & flicker-free output in real time
  • All solid-state design for rapid start-up, repeatable performance and long operating lifetime
  • ISO/IEC 17025 accredited by NVLAP (NVLAP lab code 200823-0) for calibration accuracy

RS-7-2 VIS SWIR General Specifications

Source Geometry

 150 mm diameter uniform output, Lambertian radiant source (Other output port sizes available on request)
Spatial Uniformity ≥ 98% over 8° field of view
Optical Geometry

 Integrating sphere at 500 nm diameter

(Other sphere sizes available on request)

  Optical Specifications

Spectral Range

 380 nm to 1,700 nm  (Custom ranges available on request)

Spectral Output

 28 VIS discrete LED channels, 3 broadband LED channels, 10 SWIR LED channels

 Visible resolution ~ 15 nm

 SWIR resolution ~ 50 nm (typical channel spacing

Spectral Peaks

 395nm, 405nm, 420nm, 430nm, 450nm, 460nm, 475nm, 495nm, 505nm, 520nm, 525nm, 535nm, 570nm, 595nm, 610nm, 620nm, 630nm, 637nm, 660nm, 675nm, 685nm, 700nm, 715nm, 730nm, 750nm, 760nm, 780nm, 805nm, 850nm, 895nm, 940nm, 965nm, 1050nm, 1200nm, 1300nm, 1450nm, 1550nm, 1650nm
2,700K Warm White, 3,000K Warm White, 6,500K Cool White
(Custom configs available)

Spectral Bandwidth

 Typical VIS of 20nm and NIR of 50nm FWHM
 Typical SWIR of 50-100nm FWHM (channel dependent)

Radiance Range Typical maximum of 15,000 μW / cm2 / sr
 Typical minimum of 15 μW / cm2 / sr
Luminance Range  Typical maximum of 30,000 cd / m2 (spectrum dependent)
 Typical minimum of 30 cd / m2
CCT Range 1,900K to 40,000K
Preset Spectra CIE illuminants A, B, C, D50, D55, D65, D75, E, F1-F12

Custom Preset Spectra

 Configurable at time of order via API. Contact factory for details

  Accuracy Specifications

Illumination Stability

 ≥ 99.99% after 50 ms for radiance or after 2,000 ms for spectrum

Illumination Accuracy

 ± 1% (VIS) NIST traceable, 5% (SWIR)

Spectral Accuracy

 ± 1 nm (VIS), 2.5 nm (SWIR) centroid wavelength

Color Accuracy

 CIE 1931 x,y ± 0.003 (VIS)


 < 0.1 % RMS of full scale

Specifications are subject to change without notice

RS-7 WavemonTM   Multi-channel photodiode system with amplitude feedback and real-time wavelength measurement

The Wavelength Monitor System is a multi-channel photodiode system which provides amplitude feedback and real-time wavelength measurements. It consists of three photodiodes each with an independent transimpedance amplifier circuit. Proprietary optical filtering techniques allows for wavelength accuracy of +/-0.25nm and repeatability of +/-0.05nm. The Wavelength Monitor PCBA, photodiodes, and optical filter assembly is temperature stabilized using a Peltier cooler and thermistor in a PID feedback loop. This assembly is a discrete module which can be used with any RS-7 model.

Please contact us with your custom & OEM requirements