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

共 444 条记录，以下是51-60 订阅

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optical-PERFORMANCE OF AXIAL GRADIENT AND ASPHERIC SURFACE lensES - STUDY AND ANALYSIS 4

OPTICAL-PERFORMANCE OF AXIAL GRADIENT AND ASPHERIC SURFACE L...

引用

conference on current developments in optical design and optical engineering IV

作者： KASSIM, AM SHEALY, DL AL QUDS UNIV COLL SCI & TECHNOLDEPT PHYSJERUSALEMISRAEL

ISBN: (纸本)0819415871

Using the caustic merit function for plane waves incident upon a singlet lens, a comparison between the optical performance of the lens using an axial gradient index with spherical surfaces or aspheric surfaces with constant index material has been investigated. Results indicate that the use of an inhomogeneous medium for the lens material is more effective in the controlling aberrations than the use of aspheric surfaces for a similar lens.

关键词： GRIN lenses Electronic filtering Aspheric lenses lenses Ray tracing Geometrical optics Refractive index Spherical lenses lens design Gradient-index optics

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High performance of color mixing and projection lighting based on color LEDs

High performance of color mixing and projection lighting bas...

引用

conference on current developments in lens design and optical engineering XI - and Advances in Thin Film Coatings VI

作者： Chien, Wei-Ting Ho, Shin-In Tsai, Chang-Yu Sun, Ching-Cherng Natl Cent Univ Inst Lighting & Display Sci Dept Opt & Photon Chungli 320 Taiwan

ISBN: (纸本)9780819482822

In this paper, we propose and demonstrate a novel design to make color mixing and projection of RGB LEDs. The optical elements include a high reflective light pipe, a volume scattering diffuser and a TIR lens. The system optical efficiency is around 46 % while the color is well mixing for the cases at the CCTs of 6500K, 4500K and 3000K.

关键词： color mixing RGB LEDs TIR lens diffuser correlated color temperature

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Variable-focus liquid lens for portable applications

Variable-focus liquid lens for portable applications

引用

conference on current developments in lens design and optical engineering V

作者： Kuiper, S Hendriks, BHW Huijbregts, LJ Hirschberg, A Renders, CA van As, MAJ Philips Res Eindhoven NL-5656 AA Eindhoven Netherlands

ISBN: (纸本)0819454613

The meniscus between two immiscible liquids can be used as an optical lens. A change in curvature of this meniscus by electrowetting leads to a change in focal distance. We demonstrate that two liquids in a tube form a self-centered tunable lens of high optical quality. Several properties were studied, such as optical performance, electrical characteristics and dynamic behavior. We designed and constructed a miniature camera module based on this tunable lens and show that it is very well suited for use in portable applications.

关键词： variable lens tunable lens liquid lens electrowetting dynamics camera

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Tolerancing an optical freeform surface: an optical fabricator's perspective 16

Tolerancing an optical freeform surface: an optical fabricat...

引用

conference on current developments in lens design and optical engineering XVI

作者： Nelson, Jessica DeGroote Medicus, Kate Frisch, Gregory Optimax Syst Inc Ontario NY 14519 USA

ISBN: (纸本)9781628417449

Freeform optical shapes or optical surfaces that arc designed with non-symmetric features arc gaining popularity with lens designers and optical system integrators. Tolerances on a freeform optical design influence the optical fabrication process. Case studies and soft tolerance limits for easier fabrication will be discussed. This paper will also give a high level overview of a freeform optical fabrication process that includes generation. high speed VIBE polishing, sub-aperture figure correction and testing of freeform surfaces.

关键词： Freeform optics manufacturing tolerance fabrication asphere

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Polarization fields for understanding polarization aberrations in optical imaging systems

Polarization fields for understanding polarization aberratio...

引用

conference on current developments in lens design and optical engineering XIV

作者： Sasian, Jose Univ Arizona Coll Opt Sci Tucson AZ 85721 USA

This paper provides a set of polarization aberration fields that are useful for understanding polarization aberrations in optical imaging systems. The aberration function of a plane symmetric system is used to build t... 详细信息

ISBN: (纸本)9780819496911

关键词： polarization aberrations optical imaging systems

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optical design of the JWST Fine Guider Sensor

Optical Design of the JWST Fine Guider Sensor

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conference on current developments in lens design and optical engineering XI - and Advances in Thin Film Coatings VI

作者： Zheng, Sheng Hai Evans, Clinton COMDEV Int Ltd Ottawa ON K2K 3J1 Canada

ISBN: (纸本)9780819482822

The Fine Guidance Sensor (FGS) is part of the science instrumentation for the James Webb Space Telescope (JWST). The FGS is required to operate at 37 K and provide the data needed to facilitate fine pointing and attitude stabilization necessary to meet the requirements of the mission's science and engineering operations. We describe here the selection of the proper optical design form to meet requirements and its relative merits. The FGS has progressed with the successful completion of several key design reviews. The optical design of the current stage will be discussed here in detail.

关键词： Fine guidance sensor FGS James Webb space telescope JWST

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Recent experience with design and manufacture of cine lenses 16

Recent experience with design and manufacture of cine lenses

引用

conference on current developments in lens design and optical engineering XVI

作者： Thorpe, Michael D. Dalzell, Kristen E. Raytheon ELCAN Opt Technol Midland ON Canada

ISBN: (纸本)9781628417449

Modern cine lenses require a high degree of aberration correction over a large and ever expanding image size. At low to medium volume production levels, these highly corrected designs also require a workable tolerance set and compensation scheme for successful manufacture. In this paper we discuss the design and manufacture of cine lenses with reference to current designs both internal and in the patent literature and some experience in design, tolerancing and manufacturing these lenses in medium volume production.

关键词： lens design compensators manufacturability cine

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design for adjustable optical system of liquid filled lens

Design for adjustable optical system of liquid filled lens

引用

conference on current developments in lens design and optical engineering XIV

作者： Shaw, Dein Hsieh, Hui-An 101 Sect 2Kuang Fu Rd Hsinchu 30013 Taiwan

ISBN: (纸本)9780819496911

In this research, an optical integrated module including a liquid-filled lens, a flexible sensor membrane and a self-adjusted optical compensation component was designed. We studied the optical relationship (which is called compensation function) between the liquid-filled lens and the sensor membrane to make the system has good optical characters. According to compensation function, this module compensates the optical character between lens and sensor membrane to obtain a clear image by adjusting the internal pressure and volume of the liquid in the liquid filled optical system. For a single lens optical system, the curvy sensor membrane has better performance than flat type sensor in off optical axis due to Petzval surface is curved. An optical experiment was set up to measure the performance of the module to prove the idea, and the results show that the module achieves the desired effect.

关键词： liquid-filled lens flexible sensor membrane optical module self-compensation PDMS

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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...

引用

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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USE OF LIQUID-CRYSTAL SWITCH IN SINGLE-lens-REFLEX CAMERA 4

USE OF LIQUID-CRYSTAL SWITCH IN SINGLE-LENS-REFLEX CAMERA

引用

conference on current developments in optical design and optical engineering IV

作者： JUTAMULIA, S NIWA, H TOYODA, S KOWA CO LTD SAN JOSECA 95112

We propose the use of a liquid-crystal switch consisting of a liquid-crystal cell and a polarizing beam-splitter in a single-lens-reflex camera to replace a mechanical hinged-mirror. Since there is no vibration and no... 详细信息

ISBN: (纸本)0819415871

关键词： Liquid crystals

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