Conference Agenda

Topical Meetings and Sessions:

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 and polymers, syntheses, characterization and devices
TOM 7 - Thermal radiation and energy management
TOM 8 - Nonlinear and Quantum Optics
TOM 9 - Optics at Nanoscale (ONS)
TOM 10 - Optical Microsystems (OMS)
TOM 11 - Waves in Complex Photonic Media
TOM 12 - Optofluidics
TOM 13 - Ultrafast Optical Technologies and Applications
TOM 14 - Advances and Applications of Optics and Photonics
EU Project Session
Early Stage Researcher Session organised by SIOF
Grand Challenges of Photonics Session

More information on the Topical Meetings

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Session Overview
TOM2 S01: Computational, Adaptive and Freeform Optics: Design and applications
Monday, 13/Sept/2021:
16:00 - 17:45

Session Chair: Alois Herkommer, University Stuttgart, Germany
Location: Aula 5

16:00 - 16:30
ID: 191 / TOM2 S01: 1
TOM 2 Computational, Adaptive and Freeform Optics

"First time right" - calculating imaging systems from scratch

Fabian Duerr, Hugo Thienpont

Brussels Photonics, Vrije Universiteit Brussel, Brussels, Belgium

Today’s design of optical systems largely relies on efficient ray tracing and optimization algorithms. Such a "step-and-repeat" approach to optical design typically requires considerable experience, intuition, and "trial-and-error" guesswork.

Here, we present the latest results of our recently proposed "first time right" design method for imaging systems. It is based on solving differential equations derived from Fermat’s principle of least time by using a power series approach. Consequently, it allows a highly systematic generation and evaluation of calculated designs and enables a rigorous, extensive, and real-time evaluation in solution space.

16:30 - 16:45
ID: 148 / TOM2 S01: 2
TOM 2 Computational, Adaptive and Freeform Optics

Freeform design of a two-reflector system to collimate and shape a point source distribution

Teun van Roosmalen1, Jan ten Thije Boonkkamp1, Wilbert IJzerman1,2, Martijn Anthonissen1

1Eindhoven University of Technology, The Netherlands; 2Signify Research, The Netherlands

We present a method to design a freeform two-reflector system to collimate and shape a beam from a point source. An important generalization compared to previous research is that the output beam can be in an arbitrary direction. The design problem is based on a generalized Monge-Ampere equation. This equation is solved using a least-squares algorithm for non-quadratic cost functions. We test our algorithm on two cases: uniform to uniform and the model of a laser diode to a ring-shape. We are able to obtain good solutions in both cases.

16:45 - 17:00
ID: 154 / TOM2 S01: 3
TOM 2 Computational, Adaptive and Freeform Optics

Thin multi-channel freeform optics for lighting applications

Youri Meuret, Karel Desnijder

KU Leuven, Belgium

Fresnel lenses are an attractive option to reduce the volume of refractive components while maintaining their optical functionality. The design of freeform Fresnel lenses however can be quite challenging, certainly for non-planar or non-sperical wavefronts. Another approach to reduce the volume of a freeform lens is using an array of multiple smaller freeform lens elements. Such components also help in avoiding high luminance contrast, which is another important requirement for many general lighting applications.

17:00 - 17:15
ID: 413 / TOM2 S01: 4
TOM 2 Computational, Adaptive and Freeform Optics

Multi-source light shaping with diffractive optical elements

Alexander Heemels, Auèle Adam, Paul Urbach

TU Delft, Applied Physics, Imaging Physics, Optics Research Group, Lorentzweg 1, 2628 CJ, Delft, The Netherlands

Light shaping problems are concerned with redirecting the light emitted by one or multiple sources into a desired light distribution at a target plane, generally achieved using diffractive optical elements. Shaping these optical systems is often limited to simple single-source configurations. Limitng the possible addition of extra sources to increase the total light throughput of the system.

We propose an optimization procedure which finds an optimal source positions and intensities together with an "intermediate illumination" and source positions which under shifted versions of itself give the desired intensity pattern.