Online-Seminar: Flat Optics – about Freeform, Fresnel, Diffractive and Meta Lenses
Vortragssprache ist Englisch.
The steady interest in miniaturizing optical systems ultimately leads to flat optics, which includes any concept to reduce the thickness of components and systems by introducing surfaces with high functionality. In this online seminar we invite you to join us on a journey through the concepts, prospects, challenges, and myths of the different versions of flat components, with an emphasis on lenses.
The journey starts with discussing the most fundamental goal in optical design, that is, controlling and manipulating the wavefront of the light which enters an optical system. While in imaging optics spherical wavefronts are desired and aberrations should be minimized, in light shaping tailored aberrations should be introduced. The wavefront control and shaping are accompanied by the concept of domain matching, which aims to maximize the energy throughput in a system. It is related to filling the stop in lens design. In the seminar we discuss the determination of the required wavefront control dependent on the design goal and the role played by domain matching. We distinguish between single- and multi-channel systems, which can be understood as a generalized formulation to deal with the FOV of a lens system and polychromatic design tasks.
In the next stop on the journey we discuss ways to realize required wavefront phase manipulations by optical surfaces. We start with the design of freeform surfaces. Then, we turn to flat optics in the form of diffractive, Fresnel-type and meta surfaces. We look at pros and cons of the different approaches and emphasize the similarities from a design point of view. We use physical optics terminology in the seminar and do not rely on ray optics. This helps us to get a fresh view of optical design and to seamlessly include flat optics, with its characteristic micro- and nanoscale surfaces. The examples and illustrations are done with the fast physical optics software VirtualLab Fusion.
With a discussion and Q&A session the journey will be ended.
Anmeldung Die Teilnahme am Online-Seminar ist kostenfrei.
Ihr Referent Frank Wyrowski co-founded the company LightTrans in 1999 and the company Wyrowski Photonics in 2014. He has been professor of technical physics at the Friedrich Schiller University of Jena and head of the Applied Computational Optics Group since 1996. His work as entrepreneur, researcher, and teacher is dedicated to developing fast physical-optics techniques and software to address the increasing demand to overcome the limitations of ray optics in modern optics and photonics applications. Customers worldwide benefit from his engagement through the companies’ consulting and engineering services, and the commercial optical design software, VirtualLab Fusion. Current R&D topics include applications such as lightguides for AR and VR, light shaping, microscopy, interferometry, fiber coupling, diffractive and meta lenses, DOE, HOE, freeform, microlens arrays, and physical optics theory in general.