New Fifth Generation Tunable Multi-Channel LED light source for sensor testing and calibration based on over 16 years of scientific light emitting diode engineering application experience

1. RS-7 SpectralLED
Tunable LED Light Source

2. Gamma Scientific has been
producing LED tunable light
sources for over 16 years
Digital Tunable LED Calibration Light
Source product generations:
 First stable optical feedback controlled,
intensity tunable LED source with
Patented technology, RS-5, 1998
 The first integrating sphere 4 color LED
tunable source in 1999
 8 separate color channel tunable LED
calibration source, RS-5M in 2002
 10 separate color channel RS-5B
developed in 2005

3. Gamma Scientific has been
producing LED tunable light
sources for over 16 years
Digital Tunable LED Calibration Light
Source product generations:
 RS-5-93K for Agilent tester in 2005
 Four RS-5B coupled to a 1 meter
sphere for vision research, 2008
 RS-5H high output 8 channel CMOS
image sensor test source in 2007
 Current generation RS-7 containing 35
channels and over 500 watts of LED
power.

4. Uniform Flat-Field Source for
Camera and Image Sensor
Test and Calibration
Applications:
 Camera and Image Sensor
Calibration (CCD, CMOS, etc.)
 Ambient Light Sensor Calibration
 OEM Camera Manufacturing
 Spectrum/Illuminant Simulation
 Diagnostic Medical Imaging
 Technical and Industrial
Photography
 Cinematography
 Copier/Scanner Calibration

5. Powerful Tool for
Production or R&D
Measurement Examples:
 White Balance
 Quantum Efficiency
 Spatial Non-Uniformity
 Pixel Defects
 Cross Talk
 Vignetting Correction
 Sensitivity
 Responsivity
 Signal-to-Noise
 Linearity
 ISO Speed
 Saturation Exposure
 Dynamic Range

6. The SpectralLED Advantage
 Simplify the calibration process
 Improve accuracy
 Reduce cycle time
 Quickly simulate a huge variety of
traditional light sources
 Select a preset CIE Illuminant or
Macbeth™ / X-RITE™ color patch in
milliseconds
 Produce a Macbeth™ / X-RITE™
color patch under any CIE illuminant
 Import your own spectrum
 Let the internal RMS spectral fitting
find the best match instantly.

7. Highest Resolution
Tunable Light Source
 35 Discrete Wavelength Channels
 380 to 1000 nm range
 Nearly continuous simulation of
broadband spectra
 Monochromatic outputs
 Linear 16-bit digital control on each
channel
 Closed-loop feedback for stability

8. Extremely High Power With
Wide Dynamic Range
 Over 500 Watts of LED Power
 Max Radiance levels (D65) > 30,000 uW/cm2/sr
 Max Luminance levels (D65) > 60,000 cd/m2
 More than 3 decades of dynamic range
(spectrum dependent)
 ND filter and computer controlled IRIS options
available
 Standard 75mm exit port provides >97%
uniformity

9. Accuracy and Stability
 ISO/IEC 17025 NVLAP Calibration Laboratory (Lab Code 200823-0)
- Ensures Superior Wavelength and Color Accuracy
 Full Calibration of Each LED Channel at Multiple Drive Levels
 NIST Equivalent Calibration ensures Superior Wavelength and
Color Accuracy
 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

10. SpectralLED Synthesis Engine
 Built-in RMS Spectral Fitting for Simulation of Any User Imported Target
Spectrum - blackbody, daylight, fluorescent, LED
 Quickly Simulate any CIE Illuminant or Macbeth™ / X-RITE™ Color Patch
 Convolve standard illuminants with color patches
 Flexible Interface – GUI or serial control
 Configurable – minimize RMS or ∆E

11. Included Spectral Presets
CIE Standard Illuminants X-Rite/Color Checker Patches

12. Standard Configurations
 RS-7-1 Integrating Sphere Configuration for Radiance Geometries
 RS-7-2 Baffle Tube Configuration for Irradiance Geometries
 RS-7-1 Can Be Used as Irradiance Source for Small Areas
 RS-7-2 Includes Modular Baffle Tube (f/1 to f/8 adjustment)
 Additional Baffle Tube Segments Available
RS-7-1 RS-7-2

13. Optional Wavelength Monitor
 Optional Hardware System to Measure Long
Term Wavelength Drift of Individual LED
Channels
 Eliminates Need for External
Spectroradiometer at Lower Cost
 Multi-Channel Photodiode Feedback for
Amplitude and Wavelength Data
 Uses Internal Cal Data for Extreme Accuracy
and Repeatability (<0.1nm)
 Extends Calibration Interval
 Monitor Data Available to External Systems

14. Custom Configurations
Available
 Fiber Optic Coupled Outputs (Easily
Adaptable for Test Systems)
 Custom LED wavelengths
 ND Filters or Computer Controlled IRIS
 Larger Port Diameters
 Higher f-number Systems
 Multiple LED Engines for Higher Output