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

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current developments in lens design and optical engineering xxv

Current Developments in Lens Design and Optical Engineering ...

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current developments in lens design and optical engineering xxv 2024

ISBN: (纸本)9781510679221

The proceedings contain 19 papers. The topics discussed include: athermalizing mounted doublets with ALLVAR alloys;using off-the-shelf components in the design of curved compound eye camera systems;UV-replicated monolithic polymer optics for high-volume imaging and sensing applications;recent progress on raytracing through metasurfaces;silicon metalens toward a fully silicon integrated SWIR sensing;power allocation schemes in optical wireless communication;development of transmission and receiving optical antenna for free space laser communication;design of ophthalmic contact lens using Q-type aspheres with reduced error budget for high visual acuity;and optical simulation of the white light display color change of the bulk scattering diffuser used in the mini-LED backlight module.

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25 years of progress in lithographic optics design methods 25

25 years of progress in lithographic optics design methods

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conference on current developments in lens design and optical engineering xxv

作者： Shafer, David David Shafer Opt Design Fairfield CT 06824 USA

Several new optical design methods have been developed over the last 25 years for lithographic optics, leading to greatly improved designs.

ISBN: (纸本)9781510679221;9781510679238

Several new optical design methods have been developed over the last 25 years for lithographic optics, leading to greatly improved designs.

关键词： optical lithography aspherics lenses mirrors

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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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Recent progress on raytracing through metasurfaces 25

Recent progress on raytracing through metasurfaces

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conference on current developments in lens design and optical engineering xxv

作者： Borne, Jeck Bouillon, Christopher Cleroux-Cuillerier, Alexandre Thibault, Simon Univ Laval COPL 2375 Rue Terrasse Quebec City PQ Canada UQAR Inst Sci Mer 310 Allee Ursulines Rimouski PQ Canada

ISBN: (纸本)9781510679221;9781510679238

Our study presents recent progress in modelling and performing lens optical design with metasurfaces. We developed semi-analytical models that recover the output phase, polarization, dispersion and group delay of various nanostructures. This enables the mixing of different nanostructures to obtain a target dispersion profile an interesting application of the model. These models can readily be implemented within optical design software such as Zemax and use the built-in optimization of optical design processes while avoiding time-consuming electrodynamics computation. We also introduce the metasurfaces to the analytical lens design framework. This enables us to analytically compute the phase profile of freeform metasurface doublet concerning particular ray conditions such as the Abbe Sine condition as we presented here.

关键词： Metasurface Metasurface modelling optical design Analytical design

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Using off-the-shelf components in the design of curved compound eye camera systems 25

Using off-the-shelf components in the design of curved compo...

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conference on current developments in lens design and optical engineering xxv

作者： Allain, Guillaume Rabia, Sedick Thibault, Simon Univ Laval Fac Sci & Genie Dept Phys 2325 Rue Univ Quebec City PQ Canada Ctr Opt Photon & Laser 2375 Rue Terrasse Quebec City PQ Canada

ISBN: (纸本)9781510679221;9781510679238

The fabrication of curved compound eye camera systems is usually complex since it can involve multiple nonstandard components to achieve the desired effect. In this paper we aim to provide a close alternative to these custom optical elements using off the shelf components or to provide a framework to design these systems using standard fabrication techniques. We will first demonstrate how lens distortion can be leveraged to optically bend a standard planar microlens array, and how this bending correlates to a curved microlens array. We will then show lab results of curved compound eye camera made using an off-the-shelf fisheye lens and a standard microlens array and how the equivalent curved microlens array system reproduces image in the real world and provide a comparison using image simulation from an optical design software and a scene recorded using a neural radiance field.

关键词： Optics lens design Compound eye lens distortion Biomimetics NERF

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optical design of a single freeform lens for both counter-beam and pro-beam in LED tunnel lighting 25

Optical design of a single freeform lens for both counter-be...

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conference on current developments in lens design and optical engineering xxv

作者： Syu, Jhih-Ling Lee, Tsung-Xian Tsai, Cheng-Hung Ma, Shih-Hsin Feng Chia Univ Dept Photon Taichung Taiwan Natl Taiwan Univ Sci & Technol Grad Inst Color & Illuminat Technol Daan 106 Taiwan

ISBN: (纸本)9781510679221;9781510679238

A luminaire designed for tunnel lighting is proposed, featuring the ability to adjust the ratio between counter-beam and pro-beam lighting based on different contexts. This allows the luminaire to achieve the optimal lighting mode for the conditions within the tunnel at that time. When both side LEDs are activated, it operates in symmetric lighting mode. When a single-side LED is activated, it switches to either counter-beam or pro-beam lighting mode. The advantage of this luminaire lies in the use of a single freeform secondary lens and LEDs, making installation simpler. It ensures driver safety and is more energy-efficient than traditional tunnel lights.

关键词： optical design Tunnel Lighting Freeform Secondary lens Microstructure

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optical simulation of the white light display color change of the bulk scattering diffuser used in the mini-LED backlight module 25

Optical simulation of the white light display color change o...

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conference on current developments in lens design and optical engineering xxv

作者： Syu, Jhih-Ling Huang, Po-Sung Ma, Shih-Hsin Feng Chia Univ Dept Photon Taichung Taiwan

ISBN: (纸本)9781510679221;9781510679238

This study aims to investigate the impact of Bulk Scattering Diffuser (BSD) on color variation in Mini-LED backlight modules under different optical parameters. To predict spectral distribution distortion of BSD in Mini-LED backlight module, a virtual Mini-LED backlight is built in the optical simulation software. The scattering behavior of BSD is also established by the calculation model based on Mie scattering theory. In simulations, the corresponding color coordinate of distorted spectrum is moved in the CIE 1931 color space owing to varying parameters of BSD. Finally, under the condition of highly color uniformity, through the comparison between the color coordinates and the MacAdam ellipse, the suitable manufacturing parameters of BSD are discussed.

关键词： Mini-LED Backlight module Bulk scattering diffuser Color temperature MacAdam's ellipse

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Silicon Metalens toward a fully Silicon integrated SWIR sensing 25

Silicon Metalens toward a fully Silicon integrated SWIR sens...

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conference on current developments in lens design and optical engineering xxv

作者： Dupre, Matthieu Ma, Jian Hseih, Biay-cheng Goma, Sergio Qualcomm Technol Inc 5775 Morehouse Dr San Diego CA 92121 USA

ISBN: (纸本)9781510679221;9781510679238

Most Silicon based depth and lidar sensors rely on near-infrared (NIR 750-900nm) sources to produce depth images as Silicon CMOS sensors can achieve a high quantum efficiency for an unbeatable cost at such wavelengths. Advances in short wave infrared (SWIR) sensor technologies, such as Silicon-Germanium sensors, changes this paradigm and opens a new window for groundbreaking sensor designs, as SWIR can push the wavelength above retinal hazard area (>1400nm), allowing for much higher eye safety, due to the low penetration of those wavelengths through the eye lens. Here, we propose to use a Silicon Metalens flat optics and build upon our stacked sensor technologies to obtain a fully Silicon integrated stacked sensor at SWIR wavelengths. We will discuss the design of the stacked sensor and focus on the Silicon Metalens for multiple use-cases. We will demonstrate the results of our Silicon metalens prototype at 1550nm. We will show numerical simulations of the optical stack for eye-tracking application or wide-angle time of flight (TOF) and discuss the necessary trade-offs.

关键词： metalens ToF sensors XR optics lens design

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Integration of optical waveguide technology with multi-channel color sensors for enhanced urine test strip analysis system 25

Integration of optical waveguide technology with multi-chann...

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conference on current developments in lens design and optical engineering xxv

作者： Li, Yi-Ming Lee, Tsung-Xian Natl Taiwan Univ Sci & Technol Grad Inst Appl Sci & Technol 43Keelung RdSec 4 Taipei 106335 Taiwan Natl Taiwan Univ Sci & Technol Grad Inst Color & Illuminat Technol 43Keelung RdSec 4 Taipei 106335 Taiwan

ISBN: (纸本)9781510679221;9781510679238

Urine test strips aid in prompt health assessment through color changes, but visual interpretation can be misleading, particularly with strips having multiple functions. To tackle this, some companies and studies have created paper strip analyzers using CMOS sensors. However, issues like ambient light and shooting angles often cause detection failures. Therefore, this study proposes integrating a multi-channel color sensor as the core component of a urine test strip analysis system and optical waveguide technology for optical system design architecture. This design aims to capture more color information in urine, and the optical waveguide technology ensures uniform light guidance, providing real-time transmission and high-quality signal data for urine analysis systems.

关键词： urine test strips multi-channel color sensor optical waveguide light-emitting diode

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Power Allocation Schemes in optical Wireless Communication 25

Power Allocation Schemes in Optical Wireless Communication

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conference on current developments in lens design and optical engineering xxv

作者： Elewah, Ibrahim A. Amer Coll Middle East ACM Dept Engn & Technol Kuwait Kuwait Amer Univ Middle East AUM Coll Engn Kuwait Kuwait

ISBN: (纸本)9781510679221;9781510679238

In this work, detailed literature about the power allocation schemes in optical wireless communication has been presented and discussed. The main goal is to evaluate the gain ratio power allocation (GRPA) and normalized gain difference power allocation (NGDPA) schemes in a 4x4 multiple-input multiple-output (MIMO) non-orthogonal multiple access (NOMA) based visible light communication (VLC) system. The work will evaluate the GRPA and NGDPA according to the system's overall achievable sum-rate and the sum-rate gain. The proposed MIMO-VLC system can utilize up to 4 subscribers regardless of their current position within the system coverage area. The work will examine the received bit rate of each user in different positions within the system coverage area. Target to maintain the same bit rate for each user, especially when the user is at the border of the system coverage area. Finally, the study will discuss the results before and after applying the power allocation schemes GRPA and NGPDA. It has been concluded the overall sum rate gain percentages after applying GRPA are lower than NGDPA, which gives the GRPA allocation scheme an advantage over NGDPA.

关键词： VLC MIMO GRPA NGDPA NOMA

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