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

共 445 条记录，以下是51-60 订阅

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Contact lens design to third order to compensate the spherical aberration of the eye from Zernike polynomials 20

Contact lens design to third order to compensate the spheric...

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conference on current developments in lens design and optical engineering xx

作者： Garcia-Lievanos, O. Teran-Bobadilla, Emiliano Hernandez-Flores, Luis A. Sanchez-Gonzalez, Leticia Inst Politecn Nacl Ctr Interdisciplinario Ciencias Salud Unidad Santo Tomas Dept Optometry Av Maestros S-N Mexico City 11340 DF Mexico Univ Autonoma Sinaloa Dept Optometry Culiacan Rosales 80040 Sininaloa Mexico

ISBN: (数字)9781510629028

ISBN: (纸本)9781510629028

To compensate the spherical aberration of the eye using the conic constant of the first surface of a contact lens for different refractive errors. Refractive errors were simulated by modifying only the first curvature of the cornea. For every refractive error was calculating Zernike polynomials using Optics Software for Layout and Optimization (OSLO) EDU edition with and without contact lens. To calculate the conic constant of the contact lens we use the Seidel sums for thin lenses from the longitudinal spherical aberration as it proposes V. Mahajan. The value of Zernike spherical aberration coefficient for the eye with farsightedness (+ 5.00 D) + spherical contact lens was 0.142691 mu m. The conic constant value to compensate the spherical aberration was -0.222995 and the value of Zernike spherical aberration coefficient of the eye + aspherical contact lens was 0.004354 mu m. The value of Zernike spherical aberration coefficient for the eye with myopia (- 5.00 D) + spherical contact lens was 0.144505 mu m. The conic constant value to compensate the spherical aberration was -0.101424 and the value of Zernike spherical aberration coefficient of the eye + aspherical contact lens was 0.072820 mu m. The proposed method allows us to design contact lenses that compensate for the spherical aberration of the eye from the Zernike polynomials. Although the design of contact lenses is to third order, we obtain a smaller spherical aberration than the chromatic aberration on the axis without use optimization routine.

关键词： Contact lens spherical aberration aberration of the eye and Zernike polynomials

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design for adjustable optical system of liquid filled lens

Design for adjustable optical system of liquid filled lens

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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...

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

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

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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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An optically passive athermal infrared optical system

An optically passive athermal infrared optical system

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conference on current developments in lens design and optical engineering IX

作者： Li, Hua Shen, Mangzuo Chinese Acad Sci Inst Opt & Elect Chengdu 610041 Sichuan Prov Peoples R China

ISBN: (纸本)9780819472809

An optically passive athermal infrared optical system working in the 8 - 12 micron long wavelength infrared band was designed by using a special infrared optical material AMTIR (amorphous material transmitting infrared radiation). The design principle, design results are described in this paper. In addition, the optical system was incorporated with an infrared focal plane array forming an infrared camera. The thermal test of imaging quality of this camera is also presented

关键词： infrared optical system optical design athermal optical system

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Fundamentals of concentric lens systems synthesis 17

Fundamentals of concentric lens systems synthesis

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conference on current developments in lens design and optical engineering XVII

作者： Ezhova, Kseniia Zverev, Victor Tochilina, Tatiana Tymoshchuk, Irina ITMO Univ 49 Kronverkskiy Prospect St Petersburg 197101 Russia

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

Introduction of coefficients defining the relationship of the radii of curvature of the surfaces of concentric optical systems, allowed the transformation of the obtained analytical relations in a system of two equations with two unknowns. It is shown that the existence of the solution of the system of equations determined by the optical constants of the selected lens material. The results of the analysis of the conditions of the chromatic aberration correction position and the sequence of obtaining of the system equations define the theoretical basis of the engineering method of parametric synthesis of concentric lens systems. Application of the developed method is illustrated by examples of calculation particular systems design build.

关键词： the system of concentric surfaces spherical aberration chromatic aberration of position the aperture diaphragm the primary aberrations

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optical design of athermalised dual field of view zoom lens in long wave infrared (8μm-12μm) spectral band using benefits of paraxial optics 17

Optical design of athermalised dual field of view zoom lens ...

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conference on current developments in lens design and optical engineering XVII

作者： Kucukcelebi, Doruk Roketsan TR-06780 Ankara Turkey

ISBN: (数字)9781510602861

ISBN: (纸本)9781510602854;9781510602861

This paper presents a methodology for designing an athermalised dual field of view zoom lens in long wave infrared (8 mu m - 12 mu m) spectral band by using the benefits of paraxial optics. By using this design methodology the optical designer can develop many types of complex optical systems in a straightforward way. The key feature of this design methodology relies on utilization of paraxial optics for defining the initial positions of the optical elements. The optical design is based on moving a single lens for changing the optical system's FOV thereby reducing the number of moving parts and simplifying the assembly procedure of the system. The optical design begins with optimization process using paraxial optics. Then the optical design using paraxial optics is used as a template for designing the final optical system by lens material selection for compensating the shift in system's focus due to thermal effects and lens thickness tuning.

关键词： Dual FOV optical design paraxial optics athermalization Long Wave Infrared (LWIR)

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design and fabrication of microlens by microfluidic deposition method

Design and fabrication of microlens by microfluidic depositi...

引用

conference on current developments in lens design and optical engineering V

作者： Chen, CT Chiu, CL Horng, JB Ind Technol Res Inst Optoelect & Syst Labs Hsinchu 741 Taiwan

ISBN: (纸本)0819454613

The paper presents a new processing method for design and fabrication of microlens by microfluidic deposition, in which the lenses can be formed on the media with high precise location in the fabrication process. First we may apply physical vaporization deposition (PVD) or spin coating to fabricate a thin film;secondly, the hydrophilic pattern specified by the mask of lenses can be created by photolithography, where the special lens media is made herein. Finally, the liquid solution of lens material is deposited onto the predetermined location of the lens media by the drop-on-demand fluidic actuator;thus, the microlenses are consequently formed after the complete evaporation of solvent in the solution.

关键词： microlens fabrication microfluidic deposition ink-jet

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Studies of the manufacturability of the HOE included in objective of BD/DVD combined optical pick-up head according to the objective lens glass type - art. no. 66670O

Studies of the manufacturability of the HOE included in obje...

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conference on current developments in lens design and optical engineering VIII

作者： Lisitsyna, N. V. Bauman Moscow State Tech Univ Moscow 105005 Russia

ISBN: (纸本)9780819468154

The new combined optical pick-up head for recording and playback of information on DVD and BD format discs was developed. The same objective is used for both channels. It consists of the objective lens and Holographic optical Element. In this work we present the main results of the studies of the possibility to manufacture the HOE included in objective of BD/DVD combined optical pick-up head in the dependence on objective lens glass type.

关键词： optical data storage diffractive optics

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design of the hybrid refraction-diffraction lens with wavelength 10.6 mu m 6

Design of the hybrid refraction-diffraction lens with wavele...

引用

current developments in optical design and engineering VI conference

作者： Chen, YS Li, DH Institute of Physics Chinese Academy of Sciences Beijing 100080 China

ISBN: (纸本)0819422517

In this paper, combining refractive and diffractive effects, a new kind of infrared lenses with wavelength 10.6 mu m was designed and produced for CO2 laser material processing. This refractive-diffractive lens (RDL) converts a CO2 laser beam into the rectangular shape with light intensity distribution in the concave shape at x-direction. A method which employs input aperture division and geometrical transformation technique for obtaining a better initial phase distribution of the iteration is presented. The experimental results show that the desired shape of the output light beam was obtained with a high efficiency in energy utilization.

关键词： binary optics diffractive optics infrared lens design

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