1. System Overview Lehrstuhl Intelligente Systeme
Universität Duisburg-Essen
Fakultät für Ingenieurwissenschaften
Abteilung für Informatik und Angewandte Kognitionswissenschaft
Prof. Dr. Josef Pauli – Tobias Hegemann – Fabian Bürger
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany

2. CHRISS Technical Specifications
Positioning robot with 3 axes and nanometer precision
Sample dimensions (XYZ) 50x20x10 cm and 20kg weight
8 Megapixel industrial gray value camera
Multi-spectral light system for camera with diffuse bright-field and dark-field: white, red, green, blue, UV, IR
Spectrometer measurements with 2 spectrometers at one point
UVVIS spectrometer: nm (3648 wavebands)
NIR spectrometer: nm (256 wavebands)
Point resolution/diameter ~60µm
Broadband halogen light source
Calibration between camera and spectrometer coordinate system
Smart control software for all components
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany

3. Overview Light shield closed Vibration damped table
Positioning system control unit
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany

4. Components Outside Thermal control system UVVIS spectrometer
Light control multi socket
NIR
spectrometer
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany

5. Light Array Infrared LED Measurement Head Red LED Green LED Ultra-
Violet
Light
White LED
Blue LED
Spectrometer
Light
(Halogen)
Sample
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany

6. Measurement Head Fiber NIR Dichroic filter Camera Z Stage Objective
UVVIS
Y Stage
Lens
tube
Spectrometer
Light
Spectrometer unit
Diffusor
X Stage
Sample
Microscope
objective
Sample
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany

7. Measurement Head Details
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany

8. High-Resolution Multispectral Imaging
Red
White
Green IR
6 spectral channels
Single images
Seamlessly stitched large- area images in gigapixel resolution
Blue UV
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany

9. Hyperspectral Imaging
Grid sampling acquisition technique
High resolution of up to 60µm per pixel
CHRISS Combined High-Resolution Imaging and Spectroscopy System
Intelligent Systems Group – University of Duisburg-Essen, Germany