For large area, high uniformity camera and image sensor calibration applications, the SpectralLED can be configured to have a substantially larger output port, as well to provide increased output uniformity. Specifically, the SpectralLED RS-7-2 mates up to four LED light source engines together with a 1 meter sphere that includes a 300 mm output port, with other sphere and port sizes also available upon request.
The result is a calibration light source for very large area detectors and large field of view cameras that delivers significantly higher brightness and approximately an order of magnitude higher radiometric stability (<0.1%) and wavelength accuracy (0.25 nm) than any competitive product.
From telescope or telephoto lenses for astronomical, spaceborne and aerospace applications to fish-eye or wide angle lens for virtual reality and other consumer applications, this product enables flat field calibration with higher accuracy and uniformity than ever before.
Unprecedented Resolution and Accuracy – 32 Discrete LED Wavelengths Covering the Visible and NIR
Powerful Synthesis Engine – Quickly Simulate any CIE Illuminant or Macbeth™ / X-RITE™ Color Patch
Flexible Interface – Built-in RMS Spectral Fitting for Simulation of Any User Imported Spectra
Uniform 75mm Radiance Output Port or Optional Baffle Tube for Irradiance
Easily Adaptable – for Automated Test Systems and Production Line Integration
Pure DC Constant Current Drivers and Built-in Optical Feedback Photodiode System – Ensure Accurate Output in Real Time
On-board Thermal Electric Cooler and Feedback – for LED Temperature Control
ISO/IEC 17025 NVLAP Calibration Laboratory (Lab Code 200823-0) – Ensures Superior Wavelength and Color Accuracy
| OPTICAL SPECIFICATIONS | |
| Spectral Range | 380nm – 1000nm (Standard Version, Custom Configurations Available) |
| Spectral Output | 32 Discrete LED Channels, 3 Broadband LED Channels |
| Visible Resolution ≈15nm, NIR Resolution ≈50nm (Typical Channel Spacing) | |
| Spectral Peaks1 | 395nm, 405nm, 420nm, 430nm, 450nm, 460nm, 475nm, 495nm, |
| 505nm, 520nm, 525nm, 535nm, 570nm, 595nm, 610nm, 700nm, | |
| 620nm, 630nm, 637nm, 660nm, 675nm, 685nm, 715nm, 730nm, | |
| 750nm, 760nm, 780nm, 805nm, 850nm, 895nm, 940nm, 965nm, | |
| 2700K Warm White, 3000K Warm White, 6500K Cool White | |
| (Standard Version, Custom Configurations Available) | |
| Spectral Bandwidth | Channel Dependent |
| Visible Typical ≈20nm FWHM, NIR Typical ≈50nm FWHM | |
| CCT Range | 1,900K – 40,000K |
| Preset Spectra | CIE Illuminants A, B, C, D50, D55, D65, D75, E, F1-F12, |
| Macbeth/X-Rite Color Patches | |
| Custom Preset Spectra | Arbitrary Spectra can be Configured as Presets Using API |
| Gamma can Provide Factory Loaded Custom Presets, Use Part Number RS-7-PRE | |
| (Spectral Information must be Provided by Customer at Time of Order) | |
| ACCURACY SPECIFICATIONS | |
| Illumination Stability | ≥ 99.99% after settling |
| (Channel Dependent, Settling Occurs After ≈50ms for Radiance and ≈2000ms for Color) | |
| Illumination Accuracy | ± 1% Absolute NIST Traceable, Calibration Stored Internally |
| Spectral Accuracy | ± 1nm Centroid Wavelength |
| Color Accuracy | CIE 1931 x,y = ±0.003 |
| Linearity | < 0.1% RMS of full scale |
| Temperature Stability | Active Thermoelectric Cooler with Feedback, Temperature Control within ± 1 C° |
| Long Term Drift | Output: ≤ 0.2% |
| Spectral: ≤ 1nm (Typical, Channel Dependent) | |
| ELECTRICAL SPECIFICATIONS | |
| Electrical Resolution | 16 bit DAC for Channel Current Drivers |
| (64 Independent DACs, Certain LED Channels Require Multiple Current Drivers) | |
| 24 bit ADC for Internal Radiance Monitor/Feedback | |
| Dynamic Range Adjustment | Spectrum Dependent, 4-5 Decades Typical |
| LED Control | Pure DC Constant Current with Floating Differential Sensing |
| GENERAL SPECIFICATIONS | |
| Software | Firmware Contains Full Spectral Calibration and Handles Spectral Fitting, Preset Storage, Real-time Optical Feedback, Radiometric and Photometric Units Supported. |
| Interface | USB 2.0 Type B Connector and DB-9 Connector |
| 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 into Automated Systems (no OS required) | |
| Input Voltage and Power | 110-240 VAC, 50-60Hz, 600W Maximum |
| System Dimensions | Height: 405mm (16in), Width: 460mm (18.1in), Depth: 305mm (12in), Weight: 17.5kg (38.6lbs) |
| UPGRADES | |
| RS-7-WAVEMON | Multi-channel photodiode system provides amplitude feedback and real-time wavelength measurements. This assembly is a discrete module and can be used with any RS-7 optical configuration. |
