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

共 703 条记录，以下是21-30 订阅

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Dioptric Plan Multi Apochromat objectives for microscopes. optical design 14

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

引用

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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optical design process of a human eye inspired lens 23

Optical design process of a human eye inspired lens

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Conference on current developments in lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Allain, Guillaume Thibault, Simon Univ Laval Fac Sci & Genie Dept Phys Genie Phys & Opt 1045 Ave Med Laval PQ G1V 0A6 Canada COPL 2375 Rue Terrasse Quebec City PQ G1V 0A6 Canada

ISBN: (纸本)9781510654198;9781510654181

Bio-inspired optical design can be described as a conscious decision in the design process to take inspiration from physical adaptation that were brought up by natural selection. The usual goal is to introduce non-conventional techniques or material in order to achieve better performance or novel applications. However, when the target is to imitate closely the form-factor, appearance and optical properties of a biological system, new requirements are added to the design process and new problems arises. In this paper, we will expose the design of an optical system that draws most requirements from both the optical properties and the form-factor of the human eye. However, contrary to human eye models, the main requirements for this project is to make a realistic design which can be assembled as a prototype. The design process will be laid out, by firstly introducing system requirements and various performance targets that comes from the bio-inspired design. The constraints associated with using entrance pupil's appearance as a requirement will be presented. This paper will also specifically be looking at distortion as a solution for modulating resolution throughout the field of view and as a tool to aid in those novel problems.

关键词： optical design Bio-inspired design Human eye optical design methodology optical Distortion

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A File Sharing Site for lens designs 23

A File Sharing Site for Lens Designs

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Conference on current developments in lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Reiley, Daniel J. Claff, William Burbank (United States) Sherborn (United States)

ISBN: (纸本)9781510654198;9781510654181

A file sharing site for lens designs has been started at *** . This site currently contains almost 2,000 optical models. Many engineering disciplines have built public libraries of useful, publicly-available content. For example, GITHUB(1) has publicly-available software;GrabCAD(2), 3DcontentCentral(3), TurboSquid(4) all offer mechanical engineering content such as solids files;TI, Analog, etc. offer reference designs for electronics engineers. Generally, these services aren't just file repositories;they also offer collaboration, yielding more models, more refinement, more discussion, more community, and more to learn. lens designers can also benefit from such design libraries. This paper explains the utility and structure of the site.

关键词： lens design

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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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Changing field of view by applying voltage difference 23

Changing field of view by applying voltage difference

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Conference on current developments in lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Sakarya, Dogan Ugur Roketsan Tact Missile Syst Grp TR-06780 Ankara Turkey

ISBN: (纸本)9781510654198;9781510654181

Dual field of view optical systems provide search, detect and observation abilities with wide and narrow field of views. These systems provide dual field of view by changing the effective focal length with moving a lens or lens group mechanically to exact positions. In this paper, previously proposed methodology is used to change effective focal length without any mechanical movement. This methodology relies on ionization of fluid with voltage difference to change the refractive index which is patented in 2022.

关键词： Observation system field of view zoom lens design voltage difference solution ionization

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design of an expander lens for an MWIR zoom camera using the third-order aberration analysis 23

Design of an expander lens for an MWIR zoom camera using the...

引用

Conference on current developments in lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Yun, Min-Seok Ryu, Tae-Sik Park, Sung-Chan Dankook Univ Dept Phys 119 Dandae Ro Cheonan Si 31116 Chungcheongnam South Korea

ISBN: (纸本)9781510654198;9781510654181

This study presents the methods for designing an expander lens for an MWIR zoom lens through the third-order aberration analysis and evaluating the optical zoom system. This expander lens is used to enlarge the focal lengths of an original main zoom lens two times, which unfortunately doubles the aperture size of the expander lens elements. Thus, this extended apertures significantly generate the aberrations of a zoom system. To solve the problem, an expander lens has been designed using the third-order aberration analysis numerically. Since an MWIR optical system uses a cooled detector, this zoom system should be designed to eliminate the narcissus effect. Using this design approach, we efficiently obtain an expander lens for an MWIR zoom system satisfying the current requirements.

关键词： Zoom lenses Monochromatic aberrations optical spheres Mid-IR Chemical elements lens design Transparent conductors Modulation transfer functions Spherical lenses Infrared radiation

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Widely tunable large area thin liquid crystals lens 23

Widely tunable large area thin liquid crystals lens

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Conference on current developments in lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Garcia, Javier Pereiro Cano-Garcia, Manuel Arregui, Xabier Quintana Oton, Jose Manuel vela, Carlos Carrasco de la Rosa del val, Pablo Geday, Morten Andreas Univ Politecn Madrid CEMDATIC ETSI Telecomunicac Ave Complutense 30 ES-28040 Madrid Spain

ISBN: (纸本)9781510654198;9781510654181

Reconfigurable diffractive lenses manufactured in liquid crystal are presented. The lenses show an unprecedented performance in terms of active diameter and focal distance range when compared to any other transparent adaptive lens. The lenses are characterized by an active area free of electronic components, with a fill factor of 98% which combined with a low operating voltage (<10v(rms)), open for applications ranging from eye contact lenses to space applications. The addressing of the liquid crystal is done exclusively from the periphery of the device. The lenses are based on tunable spiral diffractive lenses (SDL) for which the focal length may be changed by changing the topological charge, i.e. twist of the spiral in the lens. The twist in the resulting wavefront is eliminated by cascading two spiral plates with opposite twists emulating a conventional diffractive lens. The presented lenses have a tuning range from -2 to +2 diopters and an active diameter of 25mm.

关键词： Liquid Crystal flat lens adaptive optics diffractive optics optical vortex optical angular momentum

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Challenges using data-driven methods and deep learning in optical engineering 23

Challenges using data-driven methods and deep learning in op...

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Conference on current developments in lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Buquet, Julie Parent, Jocelyn Lalonde, Jean-Francois Thibault, Simon Univ Laval 2325 Rue Univ Quebec City PQ Canada Immervision 2020 Blvd Robert Bourassa Montreal PQ Canada

ISBN: (纸本)9781510654198;9781510654181

Data driven approaches have proven very efficient in many vision tasks and are now used for optical parameters optimization in application-specific camera design. A neural network is trained to estimate images or image quality indicators from the optical characteristics. The complexity and entanglement of such optical parameters raise new challenges we investigate in the case of wide-angle systems. We highlight them by establishing a data-driven prediction model of the RMS spot size from the distortion using mathematical or AI-based methods.

关键词： Computational optics End-to-End design Wide-angle systems Learning-based PSF estimation Distortion Data-driven optical engineering

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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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Method for designing optical systems from the off-the-shelf optical components 23

Method for designing optical systems from the off-the-shelf ...

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Conference on current developments in lens design and optical engineering XXIII Part of SPIE Optics and Photonics Conference

作者： Ryzhikov, Lev 136 Newtown Ave Unit 7 Norwalk CT 06851 USA

ISBN: (纸本)9781510654198;9781510654181

Several off-the-shelf optical lenses and lens components are available for use in the design of new optical systems. But there isn't a clear methodology on how effective there can be in a real optical device. It should be noted that the use of standard optical elements reduces the cost of the optical device, which is especially important for mass production. Ease and speed of replacement are also important parameters for the usability of standard optical elements. That is why the extensive use of purchased optical elements in optical devices will simplify their operation and improve the convenience of maintenance. Selecting purchased optical components of an optical circuit is not an easy task and requires certain skills. The main problem is that the optical design stage is divided into two parts. The first part is the creation of an optical circuit from non-standard (custom) optical components with optical characteristics close to cataloging lenses. The second part is to adjust the position of the optical component to satisfy specification requirements. This process sometimes required several iterations. For the process of fitting distances in an optical system to be successful, it is necessary to take into account the properties of optical glasses such as refractive index and dispersion when choosing lens components, in addition to their focal lengths and geometrical dimensions. It should be noted that in the catalogs of optical components there are optical parameters of lenses, and also glass parameters of the lens. This is essential information for lens designers to substitution the custom optical element for the off-the-shelf lens. Problems that arise with such a replacement are based on a limited number of standard lenses and lens components. To get comfortable for replacement, the custom lenses components must be modified (adjusted) so that optical parameters will be close enough to the parameters of the catalog lenses other words during the custom lenses opt

关键词： optical components lenses Glasses optical design Relays Head Aberration correction lens design Refractive index Tolerancing

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