TOM 1 - Silicon Photonics and Guided-Wave Optics
TOM 2 - Computational, Adaptive and Freeform Optics
TOM 3 - Optical System Design, Tolerancing and Manufacturing
TOM 4 - Bio-Medical Optics
TOM 5 - Resonant Nanophotonics
TOM 6 - Optical Materials: crystals, thin films, organic molecules & polymers, syntheses, characterization and applications
TOM 7 - Thermal radiation and energy management
TOM 8 - Non-linear and Quantum Optics
TOM 9 - Opto-electronic Nanotechnologies and Complex Systems
TOM 10 - Frontiers in Optical Metrology
TOM 11 - Tapered optical fibers, from fundamental to applications
TOM 12 - Optofluidics
TOM 13 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session
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Please note that all times are shown in the time zone of the conference. The current conference time is: 1st Dec 2022, 04:00:37pm WET
TOM3 S02: Optical System Design, Tolerancing and Manufacturing
2:30pm - 4:00pm
Session Chair: Oliver Faehnle, OST – Ostschweizer Fachhochschule, Switzerland
Ground floor, 99 seats
2:30pm - 3:00pm Invited ID: 181 / TOM3 S02: 1 TOM 3 Optical System Design, Tolerancing and Manufacturing
Nautilus: The advent of large lens-based space telescopes
Daewook Kim1,2, Tom D. Milster1, Dániel Apai2,3
1James C. Wyant College of Optical Sciences, The University of Arizona, Tucson, AZ 85721, USA; 2Department of Astronomy and Steward Observatory, The University of Arizona, Tucson, AZ 85721, USA; 3Lunar and Planetary Laboratory, The University of Arizona, Tucson, AZ 85721, USA
One of the most profound and philosophically captivating foci of modern astronomy is studies of Earth-like exoplanets in search of life in the Universe. The paradigm-shifting investigation described here calls for a new type of space telescope that redefines the available light-collecting area in space, far beyond what is currently possible with the 6.5 m diameter James Webb Space Telescope. The Nautilus Space Observatory, which is enabled by multiple-order diffractive optics, is ushering in the advent of large space telescope lenses designed to search for biosignatures on a thousand exo-earths.
3:00pm - 3:15pm ID: 127 / TOM3 S02: 2 TOM 3 Optical System Design, Tolerancing and Manufacturing
Planarization of lithium niobate surface using a thin film catalyst in pure water
1JTEC Corporation, Japan; 2Osaka University, Japan; 3Nagoya University, Japan
A catalytically assisted etching method, named Catalyst-Referred Etching (CARE) was applied to the planarization of Lithium Niobate (LN) surface, which is widely used for optical waveguides, optical modulators, piezoelectric applications. The study demonstrates that an atomically smooth surface with less than 0.1 nm root-mean-square roughness could be achieved on a LN substrate using a thin metal film and pure water as the catalyst and etching solution, respectively. All residual stress and surface damage could be removed completely thanks to the removal mechanism of CARE.
3:15pm - 3:30pm ID: 205 / TOM3 S02: 3 TOM 3 Optical System Design, Tolerancing and Manufacturing
Concept, manufacturing and challenges of ultra-compact snapshot multispectral multi-aperture imaging systems
Martin Hubold, Johanna Karl, Robert Leitel, Norbert Danz, Robert Brüning
Fraunhofer IOF, Germany
Snapshot multispectral imaging is a rising non-invasive and contact-free analysis method and technology to discriminate or identify objects based on their spectral characteristics. We demonstrate a versatile system approach for compact and real-time capable snapshot cameras for the visible (VIS) and the near-infrared (NIR) or the short-wave infrared (SWIR) wavelength range based on a micro-optical multi-aperture system and various spectral filter approaches. In addition, the manufacturing, the calibration, and the limitations of the demonstration systems are described.
3:30pm - 3:45pm ID: 317 / TOM3 S02: 4 TOM 3 Optical System Design, Tolerancing and Manufacturing
Mechanical Integration of a Prism-Grating-Prism-Assembly for the CO2M Mission
Andreas Kamm, Christian Scheffler, Thomas Peschel
Fraunhofer Institute of Applied Optics and Precision Engineering IOF, Germany
We developed and realized a mechanical integration concept of a prism-grating-prism-assembly for the CO2M mission. The mechanical design of the mounts relies on a kinematic mounting of the optical elements. Additional, ultra-light and blackened covers for stray light and disturbance light suppression are included. The complete assembly was investigated by extensive thermo-mechanical simulations to verify the stability of the mechanical design under operational, launch loads and test conditions.
3:45pm - 4:00pm ID: 167 / TOM3 S02: 5 TOM 3 Optical System Design, Tolerancing and Manufacturing
Optimization of grinding processes on fused silica components using in-process vibrometry and dynamometer measurements
Sebastian Henkel1, Marcel Binder1, Jens Bliedtner1, Marco Fritzsche2, Abdulla Huseynov3, Franziska Schöneweck3, Sascha Greiner-Adam3, Jörg Flügge3, Edda Rädlein4
1Ernst-Abbe University of Applied Sciences Jena; 2Polytec GmbH; 3Batix Software GmbH; 4Technical University Ilmenau
The presented investigations deal with real-time evaluation and recording of vibrations and forces during a CNC grinding process, as well as the analysis and control of process influences on the surface quality of optical components. The experiments were carried out on a 5-axis CNC machine. Rapid subsequent analysis of the topography resulting from grinding is achieved with the aid of white light interferometry. The aim of the investigations is to reduce the surface deviations (roughness, mid-spatials, waviness) influenced by process factors. It is shown that the vibration data measured during the grinding process correlate to a high degree with the recorded topography data.