When you require a large area (up to 600mm in diameter), highly uniform light source for camera and image sensor calibration, the SpectralLED® Large Output Port delivers brightness, radiometric stability and wavelength accuracy that is unmatched in the industry. The SpectralLED Tunable Light Source incorporates up to 35 discrete 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.
Applications
- Large area camera and image sensor calibration
- Large area photodiode detector responsivity characterization
- Spectrum / illuminant simulation
- Diagnostic medical imaging
- Technical and industrial photography
Unprecedented Resolution & Accuracy
- Wavelength options from the UVA to the Near Infrared
- Quickly simulate any CIE Illuminant or Macbeth™ / X- RITE™ Color Patch
- Built-in RMS 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
Please contact us with your custom & OEM requirements.
| RS-7-2 Specifications | |
|---|---|
| Source Geometry | 150mm, 300mm or 600mm diameter uniform output, Lambertian radiant source (Other output port sizes available on request) |
| Spatial Uniformity | ≥ 99% |
| Optical Geometry | Integrating sphere with 500mm, 1,000mm or 1,500mm diameter (Other sphere sizes available on request) |
| Radiance Range | Dependent upon integrating sphere size and number of light engines attached. Please consult with factory for configuration parameters and output specifications. |
| Luminance Range | |
| Optical Specifications | |
| Spectral Range | 380 nm to 1,000 nm (Custom ranges available on request) |
| Spectral Output | 32 discrete LED channels, 3 broadband LED Channels Visible resolution ~ 15 nm, NIR resolution ~ 50 nm (typical channel spacing) |
| Spectral Bandwidth | Typical: Visible 20nm FWHM, NIR 50nm FWHM |
| CCT Range | 1,900K to 40,000K |
| Preset Spectra | CIE Illuminants A, B, C, D50, D55, D65, D75, E, F1-F12, MacbethTM / X-RiteTM Color Patches |
| 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 color |
| Illumination Accuracy | ± 1% Absolute, NIST traceable |
| Spectral Accuracy | ± 1 nm centroid wavelength |
| Color Accuracy | CIE 1931 x, y ± 0.003 |
| Linearity | < 0.1 % RMS of full scale |
| Temperature Stability | Within ± 1° C via active TEC |
| Long-term Drift | Output ≤ 2% Spectral ≤ 1 nm (channel dependent) |
| Electrical Specifications | |
| Electrical Resolution | 16 bit DAC for channel current drivers 24 bit ADC for internal radiance monitor feedback |
| Dynamic Range Adjustment | 4-5 decades typical (spectrum dependent) |
| LED Control | Pure DC constant current with floating differential sensing |
| General Specifications | |
| Software | Firmware includes full spectral calibration with spectral fitting, preset storage, real-time optical feedback, radiometric and photometric units supported |
| Interface Connectors | USB 2.0 type B and DB-9 |
| Interface Protocol | Simple ASCII commands with optional binary block transfer |
| Supported Operating Systems | USB drivers for Windows, OSX and Linux via FTDI virtual COM port Legacy RS-232 serial port for integration (no OS required) |
| Input Voltage and Power | 100 to 240 VAC at 50-60Hz, 600W maximum |
| Light Engine Dimensions | Dependent on integrating sphere chosen – please contact factory for details |
| Upgrades | |
| RS-7 Wavemon™ | Multi-channel photodiode system provides amplitude feedback & real-time wavelength measurements |
| Specifications are subject to change without notice. | |
Configuration Options
| Sphere Diameter | Max Exit Port Diameter | Number of SpectralLED® |
|---|---|---|
| 0.5 meters | 150 mm | 1 to 2 |
| 1.0 meters | 300 mm | 1 to 4 |
| 2.0 meters | 600 mm | 1 to 8 |
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.
