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检索条件"任意字段=Current Developments in Lens Design and Optical Engineering XXIV 2023"

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current developments in lens design and optical engineering xxiv

Current Developments in Lens Design and Optical Engineering ...

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current developments in lens design and optical engineering xxiv 2023

ISBN: (纸本)9781510665460

The proceedings contain 14 papers. The topics discussed include: wide field of regard metalens receiver for free space optical communication;optimization of freeform spectacle lenses based on high-order aberrations;hybrid refractive-metalens design for imaging applications;hybrid refractive-metalens design for imaging applications;halogen source illumination optimization using a beam shaping biconic lens array;multi-aperture pattern projection using arbitrary shaped microlenslets;variable-angle, spectroscopic ellipsometry study on the repeated application of first contact polymer on silicon-based surfaces;convolutional neuronal network to restore images encoded by a wavefront coding imaging system;and spectrally aligned integration of miniaturized substrate-free thin-film filters for fiber optical networks.

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25 years of current developments in lens design and optical engineering: a review 25

25 years of current developments in lens design and optical ...

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Conference on current developments in lens design and optical engineering XXV

作者： Thibault, Simon Univ Laval COPL Quebec City PQ Canada

ISBN: (纸本)9781510679221;9781510679238

These days, nothing lasts very long, and things often change for the better, but there are sure things in our community, such as this annual event, which has been going on for 25 years. The first edition in 2000 of the current developments in lens design and optical Systems engineering Conference took place during International Symposium on optical science and technology, 30 July - 4 August 2000 in San Diego. Over 45 oral presentations and ten posters were presented. The chairs were Robert E. Fischer, Warren J. Smith, R. Barry Johnson, and William H. Swantner. The proceeding was numbered 4093 and 24 years later the number is 12666 (2023). This paper looks back on the great moments of our conference, its speakers, the subjects that have come and gone, and those that have remained.

关键词： History lens design optical engineering aberration instrumentation assembly testing metrology

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UV optical Surface Cleaning with First Contact Polymer 14

UV Optical Surface Cleaning with First Contact Polymer

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current developments in lens design and optical engineering xxiv 2023

作者： Beasley, Matthew Eloriaga, Noel Davis, Michael Veach, Todd Space Systems Division Southwest Research Institute 6220 Culebra Road San AntonioTX78238-5166 United States

ISBN: (纸本)9781510665460

At Southwest Research Institute (SwRI), the ultraviolet (UV) calibration lab successfully tested First Contact Polymer (FCP) cleaning solution on unprotected gold mirrors in the UV region. This investigation proved that the cleaning solution meets the contamination threshold of 2 and passes the relative reflectance differences threshold of © 2023 SPIE.

关键词： Calibration

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Halogen source illumination optimization using a beam shaping biconic lens array 14

Halogen source illumination optimization using a beam shapin...

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current developments in lens design and optical engineering xxiv 2023

作者： Smeesters, Lien Rosseel, Dries Vervaeke, Michael Thienpont, Hugo Department of Applied Physics and Photonics Pleinlaan 2 Brussels1050 Belgium

ISBN: (纸本)9781510665460

Illumination optical design using non-coherent sources is of major interest for sensing applications requiring a uniform illumination. We present the development of a custom biconic lens array, enabling beam shaping of a halogen source array to a rectangular uniform illumination. First, the tungsten halogen sources were accurately modelled considering the near-field emission pattern and broadband spectrum. Following, the illumination lens array is optimized, including a study on the optimal arrangement and pitch of the array, and ensuring a manufacturable design by taking the optical and mechanical tolerances into account. The optimized lens array comprises of custom lenses (Ø 20 mm) featuring a first spherical surface and a second biconic surface with different radii of curvature and aspherical coefficients (up to the 8th order) in the X and Y direction. A spatial uniformity, defined as the standard deviation of the flux distribution, of 0.0002 was achieved within the envisioned illumination area of 50 x 20 mm2 being close to a perfect uniformity considering a targeted value of 0. Finally, the aspheric biconic lens is manufactured using ultraprecision diamond tooling (Nanotech 350FG), and its performance is successfully validated in a laboratory demonstrator setup, giving rise to an optimized and uniform halogen source illumination. © 2023 SPIE.

关键词： optical design

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Dioptric Plan Multi Apochromat objectives for microscopes. optical design 14

Dioptric Plan Multi Apochromat objectives for microscopes. O...

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current developments in lens design and optical engineering xxiv 2023

作者： Frolov, Dmitry N. Vinogradova, Olga A. Frolov, Alexey D. Pavlii, Aleksandr D. Project Labor-microscopes St.-Petersburg Russia LLC "Optotekhnika" St.-Petersburg Russia

ISBN: (纸本)9781510665460

For some types of studies on a microscope, optics is required, which has a multi apochromatic aberration correction in a continuous spectral range from the nearest short -wave UV to the nearest IR spectral areas. In the NUV range, in some cases, it is required to ensure the focus of laser sources radiation on the wavelengths of 248, 222, 213 and even 193 Nm. The work is also required for the near IR region, for example, for focusing laser sources radiation on wavelengths 1315, 1523 and even 2010 and 2080 nm. A priori such optics should also work in a visible spectral range. All studies can be carried out within the indicated a continuous NUV - NIR of the range. We propose to investigate the fundamental possibility of creating lens objectives for which chromatic aberrations are corrected in a wide spectral range. In addition, optics are required for research in the SWIR, MWIR, and LWIR spectral ranges. © 2023 SPIE.

关键词： Microscopes

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Hybrid refractive-metalens design for imaging applications 14

Hybrid refractive-metalens design for imaging applications

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current developments in lens design and optical engineering xxiv 2023

作者： Ding, Yijun Stone, Bryan D. Bahl, Mayank Heller, Evan Scarmozzino, Robert Synopsys Inc. 199 S. Los Robles Ave. Suite 400 PasadenaCA91101 United States

ISBN: (纸本)9781510665460

Metalenses can be used as standalone single elements or incorporated as one component of a subassembly that also includes other non-metalens optical elements. Because of the sub-wavelength length scale of the meta-atoms, ray-based methods for analysis and optimization may not be considered appropriate. However, by treating the imparted phase appropriately, ray-based methods can be used to design and analyze optical systems that incorporate one or more metalenses. These methods can be applied to imaging systems or illumination systems composed solely of metalenses, or systems that incorporate a mix of metalenses and conventional refractive, reflective, or diffractive optical elements. There are two pieces of information that are required by the ray trace: i) the ray directions following the metalens, and ii) the amount of energy that the ray carries. The distribution of the meta-atoms in the metalens can be used to determine ray directions and Fourier analysis allows for estimation of the energy carried by the rays. The method relies on having access to the imparted phase (from an EM solver, say) that can be accessed during the ray trace. This approach allows for workflows that are familiar to lens designers—even those without experience designing metalenses—while offering results that are in excellent agreement with more rigorous wave-based analyses. This approach is applicable to both polarization-insensitive and polarization-sensitive designs. In this paper, we discuss the design approach and offer design examples. © 2023 SPIE.

关键词： Polarization

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Wide field of regard metalens receiver for free space optical communication 14

Wide field of regard metalens receiver for free space optica...

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current developments in lens design and optical engineering xxiv 2023

作者： Islam, Md Shafiqul Boyraz, Ozdal University of California Irvine IrvineCA92697 United States

ISBN: (纸本)9781510665460

In conventional free space optical communication receivers, focusing optics reduces the field of regard (in the range of millidegree) while increasing the power received by the detector. As a result, a receiver communicates with one transmitter at a time. In this paper, we propose a novel two-metalens-receiver system that offers a wider field of regard (in the range of degrees) to capture the optical signal from a large Angle of Arrival (AoA). The first metalens of the system compresses and separates optical beams, based on different incident angles. The compression factor of the first metalens needs to be chosen based on the receiver system’s overall length, aperture size, and minimum angular separation between the transmitters. The second metalens redirects and focuses the beam to the detector sitting on the optical axis. Physical Optics calculation with the proposed phase profile as a phase mask shows that our proposed system increases the power received by the detector up to 1000 times compared to the conventional system for large AoA. As a result, transmitters with wide angular (and spatial) separation can communicate with the proposed receiver simultaneously. The designed phase profile is implemented by a meta-unit cell with varying diameters of Si nanopillars sitting on the quartz substrate. Finally, Quasi-3D full wave simulation is carried out to show the effectiveness of the two metalens-receiver systems. © 2023 SPIE.

关键词： Physical optics

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Spectrally aligned integration of miniaturized substrate-free thin-film filters for fiber optical networks 14

Spectrally aligned integration of miniaturized substrate-fre...

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current developments in lens design and optical engineering xxiv 2023

作者： Gehrke, Philipp Rüsseler, Anna K. Hoffmann, Gerd A. Wienke, Andreas Kracht, Dietmar Ristau, Detlev Laser Zentrum Hannover e.V. Hollerithallee 8 HannoverD-30419 Germany Welfengarten 1a HannoverD-30167 Germany Gottfried Wilhelm Leibniz Universität Hannover Welfengarten 1 HannoverD-30167 Germany

ISBN: (纸本)9781510665460

This paper presents the active alignment of miniaturized, substrate-free optical thin-film filters (TFFs) according to the filters’ spectral transfer properties for integration into fiber optical networks. optical TFFs are often designed for a specific narrow angle of incidence (AOI) range. Hence, a sufficient manufacturing precision of the angled photonic components connected to the optical filter is needed. These components then can no longer be used for different scenarios where i.e. the incident angle is changed. Conversely, the individual miniaturized optical filter chips can also vary in specification due to slight inhomogeneities during the production on a large-scale wafer. Therefore, not all filter chips on the wafer meet the demanded specifications at the designed AOI, resulting in a reduced yield. Moreover, it requires a time-consuming separation into different quality classes by measuring single filter chips on the wafer. To maximize the amount of usable chips, a procedure was developed to actively align the chips inside a precision optics assembly system by measuring the transmitted power at different wavelengths while tilting them towards the optical axis. When the optimal angle is found, the chip is glued into the optical network platform. Next to maximizing the yield, the production steps can be reduced because the prior separation into quality classes becomes redundant. Manufacturing tolerances during the thin-film deposition are equalized due to the active spectral alignment on a universal optical platform. With this technique, a more versatile process for TFF integration compared to passively aligned assemblies on fixed angle components is demonstrated. © 2023 SPIE.

关键词： Integration

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optical Relays for Imaging Scintillators 14

Optical Relays for Imaging Scintillators

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current developments in lens design and optical engineering xxiv 2023

作者： Malone, Robert M. Baker, Stuart A. Frayer, Daniel K. Haines, Todd J. Joyce, Kevin T. Kaufman, Morris I. Manhart, Paul K. Walters, Katherine L. Zepeda-Alarcon, Eloisa Nevada National Security Site Transformational Diagnostic and Imaging 2900 East Rd. Los AlamosNM87544 United States Lawrence Livermore National Laboratory LivermoreCA94550 United States

ISBN: (纸本)9781510665460

Cygnus is a dual beam high-energy radiographic x-ray source. Ten years ago, three large zoom lenses were assembled to collect images from 200 mm x 200 mm square scintillators. The zoom capability allows zooming down to a 60 mm x 60 mm picture from the scintillator. current radiographic imaging needs now require larger 270 mm x 270 mm square scintillators and the capability to use both 92 mm x 92 mm and 62 mm x 62 mm CCD cameras, and a new lens design to meet these needs. This zoom lens incorporates 11 elements and is designed to be telecentric. It images a scintillator emitting light peaking at 435 nm, so special glass types are required for the lens elements. Much larger elliptical pellicles are needed to deflect the scintillator light out of the x-ray path into the lens. The optical axis of the imaging system must be colinear with the x-ray axis. Two scintillators are positioned in each of two Cygnus x-ray axes, for a total of four scintillators and four lens systems. An optional configuration will be shown, enabling two lens systems imaging opposite sides of a single scintillator, for a total of four lenses and two scintillators. Although this configuration has advantages, it suffers from crosstalk. Care must be taken to analyze the anti-reflection coatings applied to all the elements in the imaging chain, including the CCD array and its vacuum window. The evolution of our Cygnus radiographic systems over the last two decades will be discussed. © 2023 SPIE.

关键词： optical design

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