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Abstracts
Optics for VR headsets
Juan C. Miñano, Pablo Benítez
Cedint, University Politécnica de Madrid
Reducing the size of Virtual Reality head-mounted displays while maintaining the optical quality is of main interest to improve the comfort of users. This is a particularly complex design problem due to the very large field of view and high resolution needed to feel the immersion. High compactness with high transmission efficiency and high contrast can be achieved by multichannel optics, whose design for high performance is carried out at LIMBAK introducing intensively freeform optical surfaces, increased resolution via variable magnification, dynamic mapping control and super-sampling via pixel interlacing. This presentation will cover the growing variety of geometries, how to address their challenges and envision their future.
High-speed, 100-megapixel, micron-resolution with a 3D-printed microscope: multi-camera Fourier ptychography
Andrew R Harvey, Pavan Konda, Jonathan Taylor and Tomas Aidukas
School of Physics & Astronomy, University of Glasgow,
Scotland, UK
The ability of a microscope to record wide-field, high- resolution images is fundamentally limited by diffraction and optical aberrations. Fourier ptychographic microscopy (FPM) employs aperture synthesis to computationally fuse and correct for aberrations in multiple bandpass-filtered images recorded using time-sequential synthesis of high-NA illumination using an LED array. We report parallelisation of FPM using multiple 2MP cameras and simple low-NA singlet microscope objectives to record 1.1-micron-resolution 89-megapixel images across an extended field of view of 26mm2. Our generalisation of the FPM technique enables a scalable increase in acquisition speed (we demonstrate 9x increase) and our image-construction algorithms enable diffraction-limited imaging using 3D-printed opto-mechanics over periods of many hours.
Molding the Flow of Light with 3D Photonic Materials and with
Wavefront Shaping
Willem L. Vos
University of Twente, NE
Abstract TBD
Merging Optics and Photonics
Vladan Blahnik
Zeiss Oberkochen, DE
An increasing number of optics and photonics systems are being produced by lithographic methods (wafer-level manufacturing, photonic integrated chips) to lower cost or to increase functions per volume. This enables new mass applications like Lidar Systems for autonomous driving vehicles or handheld devices that greatly simplify regular medical monitoring like miniaturized optical coherence tomography systems. We look at the new challenges for the optical design of such devices and give examples of system layouts for the mass market.
The conceptual optical design for the European Solar Telescope
Sergio Bonaque Gonzalez
European Solar Telescope, Tenerife, Spain
The European Solar Telescope (EST) is a next generation large-aperture solar telescope. With a 4.2-metre primary mirror and a deformable secondary mirror, it will be optimised for studies of the magnetic coupling of the solar atmosphere by using multi-wavelength imaging, spectroscopy and spectropolarimetry. EST will specialise in high spatial and temporal resolution, using cutting-edge multi conjugate adaptive optics and a thorough polarimetric calibration. In this talk we will give an overview about the current state of EST optical design.
Space Optics at SSTL
Andrew Haslehurst
Surrey Sattelite Tecnology Ltd, Surrey, UK
Abstract TBD
Maxwell's "Absolute Instruments": modern realisations
with conventional optical elements
Andrew Rakich
Mersenne Optical Consulting, Wellington & Wairarapa, New Zealand
Maxwell was the first to consider what constituted a “perfect optical instrument”. By Maxwell’s definition a perfect instrument meets three criteria:
1) It produces stigmatic point imagery for all object points.
2) It introduces no mapping errors (distortion).
3) It preserves object curvature.
Maxwell showed that if an optical system is perfect for two different planes perpendicular to the optical axis and at differing axial distances, then the system would be perfect for all objects. Such systems are often described as “Absolute Instruments”, and these produce an exact scale image of the 3-dimensional volume of object space. This paper will investigate the theory underpinning absolute instruments, before going on to discuss the known types of absolute instrument that use conventional optics. Finally, a new class of absolute instrument will be described, together with its application to the simultaneous correction of the stellar-field and laser guide stars, pupils and metapupils, in a modern Multi-Conjugate Adaptive Optics (MCAO) system, on the European Southern Observatory’s “E-ELT”.
Desensitization for aspheric camera designs in CODE V
Adrien Tozzoli
Optical Solutions Group, Synopsys Inc., Munich, DE
Compact aspheric camera designs are ubiquitous in today’s modern optical systems. The use of molded plastic optics has enabled fabrication of high-performance optics in smaller and smaller form factors. In addition to standard imaging applications, these optics are present in consumer electronics, medical devices, industrial inspection and sensing optics, very often in high volumes.
Today’s optical design engineers are challenged to create higher performance designs to meet demands in this wide range of applications, using modern optical design software. It is critical to focus on the as-built performance of these optical systems, since it relates directly to the expected yield in mass production. In this presentation, we will cover some techniques useful for desensitization of these challenging forms of optical designs.
Optical design for industrial applications
Duncan Walker
Walker Optics Ltd, UK
Over recent years there has been a rapid increase in the number of different applications that are using optics in the hardware whether for illumination, imaging, spectrometry or other diagnostic techniques. Building the optics into the hardware is becoming an everyday requirement. However as with incorporation of the electronics, mechanics and industrial design, the optical design also requires specific skills. To build a successful system, an optical designer must not only consider the optics but also balance the overall requirements including mechanical, environmental and budgetary constraints. The best systems are designed when the optical designer is involved throughout the design process from writing the specifications through to the completion of the system. This presentation will discuss the process from start to finish, illustrated with some case studies.
New optical glasses and filter glasses for the future
Philipp Leimer, Uwe Petzold, Ralf Biertümpfel
SCHOTT AG, Mainz, DE
Current market trends request special optical positions and more extreme features of optical glasses. SCHOTT offers new glass types and metrology upgrades to ensure the next generation of optical devices. SCHOTT presents new high index glasses to enable compact designs e.g. for mobile devices, UV transparent materials enabling disinfection, low dispersion glasses for superior chromatic correction, radiation resistant glasses for tough environments, new filter glasses for autonomous driving, higher accuracy on its refractometers, SWIR data for broad band designs, and conformity to restrictions like RoHS, Reach or ISO standards.
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Measurement-driven optical designs in microscopy
Jonathan Taylor
University of Glasgow, Scotland, UK
Application-specific optical system design can enable high-quality measurement even using simple low-cost optics. Optical system design is commonly driven by universal metrics such as image resolution. However, a system optimised to measure a specific quantity (e.g. velocity) may end up looking very different. We will present two examples of this philosophy. We will show how “light field microscopy” for snapshot 3D imaging suffers from major image reconstruction artefacts and yet still allows velocity estimation. We will also demonstrate efficient measurement of an abstract quantity (phase of the heartbeat in a living animal) using optical compressed sensing with a compression ratio so high that an image of the target could never have been reconstructed.
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