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Institute for High-Frequency and Communication Technology

Prof. Dr. rer. nat. Ullrich Pfeiffer


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    Um die Qualität bereits verpackter Güter erneut zu kontrollieren, steht die Qualitätssicherung in... [more]
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  • Researcher of IHCT has been awarded with the IRMMW-THz Outstanding Student Paper Award
    Our co-worker Ritesh Jain together with another student took first place at this year's IRMMW... [more]
  • Wuppertaler Lehrstuhl koordiniert ab 2021 neues DFG-Schwerpunktprogramm
    Die Deutsche Forschungsgemeinschaft (DFG) richtet 14 neue Schwerpunktprogramme (SPP) für das Jahr... [more]
  • Update COVID-19 / Corona-Virus
    As of April 6, the following is determined for the summer semester [more]
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Terahertz-Light Field Camera Prototyp

Side view of the THz light field camera

Light-field cameras record both the brightness and direction of the incident light rays. This spatiodirectional information can be post-processed for a dynamic focal point adjustment and 3-D imaging. Light-field has traditionally been a domain of visible light computational imaging. Our chair is leading the development of light-field methodologies for the THz spectrum, bringing new foundational understanding and hardware capabilities for bridging the terahertz gap.

Currently, we are building the first ever THz light-field camera prototype - which consists of a 3x3 super-array of lens coupled 1k-pixel THz CMOS cameras - in a single package. The CMOS camera chip is presented in the International Solid-State Circuits Conference (ISSCC) 2021. The figure shows the prototype of the light field array. The prototype serves as the hardware platform for the development of light-field based real-time THz 3-D imaging techniques. 

Preliminary work:

Ritesh Jain; Philipp Hillger; Janusz Grzyb; Eamal Ashna; Vishal Jagtap; Robin Zatta; Ullrich R. Pfeiffer
A 32x32 Pixel 0.46-to-0.75THz Light-Field Camera SoC in 0.13µm CMOS
2021 IEEE International Solid-State Circuits Conference (ISSCC), :484-486
March 2021

Keywords: Three-dimensional displays, Packaging, Cameras, Real-time systems, Solid state circuits, Pins, Lenses, Cameras, light-field, terahertz (THz)

Ritesh Jain; Frank Landskron; Janusz Grzyb; Ullrich R. Pfeiffer
Object Feature Extraction with Focused Terahertz Plenoptic Imaging
43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), :1-2
September 2018

Keywords: Cameras;light-field;terahertz (THz)

R. Jain; M. Schellenbeck; J. Grzyb; U. R. Pfeiffer
Investigations on the Plenoptics Based Image Generation for THz Reflection Imaging
42nd International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW), Cancún, México:1-2
August 2017

Keywords: cameras;terahertz wave imaging;direct projection mode;field-of-view and sensor directivity;optical alignment;plenoptic camera;plenoptics based image generation;terahertz reflection imaging;Cameras;Image resolution;Lighting;Robot vision systems;Signal to noise ratio;Weapons;light-field;terahertz (THz)

Ritesh Jain; Janusz Grzyb; Ullrich Pfeiffer
Plenoptic Sensing with a CMOS THz Camera
German THz Conference 2017, Bochum, Germany
March 2017

Keywords: Cameras;light-field;terahertz (THz)

Ritesh Jain; Janusz Grzyb; Ullrich R. Pfeiffer
Terahertz Light-Field Imaging
IEEE Transactions on Terahertz Science and Technology, 6(5):649-657
September 2016
ISSN: 2156-342X

Keywords: Apertures;Cameras;Detectors;Interpolation;Lenses;Optical imaging;Computational imaging;light-field;plenoptics;radiation pattern;silicon lens;terahertz (THz);transmission-mode imaging

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