City:  Jena
Date:  Nov 24, 2022

Student Assistant 3D Surface Imaging of Transparent Objects by Thermal Radiation (IOF-2022-90)

The Fraunhofer-Gesellschaft ( currently operates 76 institutes and research institutions throughout Germany and is the world’s leading applied research organization. Around 30 000 employees work with an annual research budget of 2.9 billion euros. 

Fraunhofer is Europe’s largest application-oriented research organization. Our research efforts are geared entirely to people’s needs: health, security, communication, energy and the environment. As a result, the work undertaken by our researchers and developers has a significant impact on people’s lives. We are creative. We shape technology. We design products. We improve methods and techniques. We open up new vistas.


The Fraunhofer Institute for Applied Optics and Precision Engineering in Jena conducts applied optics research on behalf of industry and as part of publicly funded research projects. The range of services includes system solutions, starting with new design concepts, through technology development, manufacturing and measurement methods to the construction of demonstrators and pilot series for applications. Fraunhofer IOF is also pioneering applied quantum technology, providing innovative solutions to science and industry wherever quantum optical phenomena may lead to revolutionary applications.


The “Imaging and Sensing” department of the Fraunhofer Institute for Applied Optics and Precision Engineering IOF in Jena is looking for a student assistant 3D Surface Measurement of Transparent Objects by Thermal Radiation. Our goal is to continue the development of a novel method for the three-dimensional measurement of a great variety of objects, e.g., consisting of transparent materials. Traditionally, visible fringe patterns are projected onto the measurement objects and observed by two cameras. Using this coding of the object surface, it is possible to identify matching pixels in the two cameras and to calculate 3D points via triangulation. For a successful measurement, it is essential that the fringe patterns are reflected diffusely from the object surface. However, many materials, such as transparent glass, do not meet this requirement. In order to be able to measure glass objects nonetheless, we at Fraunhofer IOF have developed an innovative measurement principle that expands the fringe projection approach to thermal radiation. Instead of visible patterns, we use thermal patterns, which are imprinted into the object and observed with infrared cameras in stereo arrangement. Based on the acquired infrared images, we reconstruct the 3D shape of the measurement objects. This opens up numerous applications, e.g., in the retail sector, for bin picking, or in quality control. Our new technique is to be optimized, technically simplified, and thoroughly investigated.


What you will do

  • stereo 3D sensor development with active pattern projection
  • optics design in the thermal infrared (Zemax OpticStudio)
  • algorithmics and programming (Python, C++)
  • design and assembly of control electronics
  • acquisition, evaluation and presentation of measurement series for scientific publications


What you bring to the table

  • You are a student in the field of photonics, physics, engineering or a similar study program.
  • You have basic knowledge of working in laboratories, with scientific equipment, and in digital data processing.
  • You are motivated to learn how to control modern technologies, methods, and processes in the field of optical sensors.
  • Your strengths include an independent and systematic approach to work, creative and analytical thinking as well as commitment, team orientation, and communication skills.
  • A friendly, reliable and open manner completes your profile.


What you can expect

  • Collaboration in challenging research and development projects 
  • A collegial, open-minded and friendly team
  • Flexible working hours that allow you to balance your studies and on-site experience 
  • Extensive professional support from scientific mentors


The weekly working time is agreed individually. Remuneration according to the general works agreement for employing assistant staff.


We value and promote the diversity of our employees' skills and therefore welcome all applications - regardless of age, gender, nationality, ethnic and social origin, religion, ideology, disability, sexual orientation and identity. Severely disabled persons are given preference in the event of equal suitability. 


With its focus on developing key technologies that are vital for the future and enabling the commercial utilization of this work by business and industry, Fraunhofer plays a central role in the innovation process. As a pioneer and catalyst for groundbreaking developments and scientific excellence, Fraunhofer helps shape society now and in the future. 


Interested? Apply online now. We look forward to getting to know you!

Fraunhofer Institute for Applied Optics and Precision Engineering IOF 


Requisition Number: 53664                Application Deadline: 11/28/2022


Job Segment: R&D Engineer, Physics, R&D, QC, Engineering, Research, Science, Quality