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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231-240 订阅

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Advanced optical design for DNA sequencing systems

Advanced optical design for DNA sequencing systems

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Sobolev, Kirill Joobeur, Adel Uhrich, Craig Aziz, David ASML (United States) Complete Genomics Inc. (United States) Midbar West Inc. (United States)

ISBN: (纸本)9780819487384

Recent advances in DNA sequencing techniques require the development of high NA immersion microscope systems with large field-of-view, increased resolution and very tight distortion correction. This paper discusses the optical design and tolerance analysis of a NA 1.0 immersion microscope system with a field of view over 1 mm, which is to be used for four-color fluorescence spectroscopy. The microscope system includes an immersion objective lens and four tube lenses, and is corrected for a wide wavelength range from 490 nm to 712 nm. We will discuss critical aspects of designing this kind of optical system, including special glass selection required for chromatic correction.

关键词： DNA sequencing high-end microscope system lens design optical engineering

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Progress in the SMS design method for imaging optics

Progress in the SMS design method for imaging optics

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Lin, Wang Benitez, Pablo Minano, J. C. Infante, Jose Biot, Guillermo Univ Politecn Madrid CEDINT E-28040 Madrid Spain

ISBN: (纸本)9780819487384

In this work, two SMS algorithms are presented for an objective design with different selected ray-bundles: three meridian ray-bundles (3M) and one meridian and two skew ray-bundles (1M-2S), the latter from pin hole point of view, provides a better sampling of the phase space. Results obtained with different algorithms will be compared.

关键词： SMS method telephoto lens Meridian ray-bundle Skew ray-bundle imaging system

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optical design of the focal adjustable flashlight based on a power white-LED

Optical design of the focal adjustable flashlight based on a...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Cai, Jhih-You Lo, Yi-Chien Sun, Ching-Cherng Natl Cent Univ Dept Opt & Photon Inst Lighting & Display Sci Taipei Taiwan

ISBN: (纸本)9780819487384

In the paper, we design a focal adjustable flashlight, which can provide the spotlight and the wide-angle illumination in different modes. For most users, they two request two illumination modes. In such two modes, one is high density energy of the light pattern and the other is the uniform light pattern in a wide view field. In designing the focal adjustable flashlight, we first build a precise optical model for the high-power LED produced by CREE Inc. in mid-field verification to make sure the accuracy of our simulation. Typically, the lens is useful to be the key component of the adjustable flashlight, but the optical efficiency is low. Here, we introduce a concept of so-called total internal refraction (TIR) lens into the design of flashlight. By defocusing the TIR lens, the flashlight can quickly change the beam size and energy density to various applications. We design two segments of the side of the TIR lens so that they can be applied to the two modes, and the flashlight provides a high optical efficiency for each mode. The illuminance of the center of light pattern at a distance of 2 m from the lamp is also higher than using the lens in the spotlight and wide-angle illumination. It provides good lighting functions for users.

关键词： Spotlight Wide-angle illumination LED TIR lens

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Development of multi-spectral lenses for thermal imaging technique

Development of multi-spectral lenses for thermal imaging tec...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Bezdidko, Sergey N. Morozova, Elena, I Roy, Yuri A. Open Joint Stock Co Res & Prod Corp Precis Syst & Instruments Moscow Russia

ISBN: (纸本)9780819487384

The modern level of development of optoelectronic devices requires the creation of optoelectronic devices, providing maximum information content in different weather conditions, day and night. The solution to this problem is possible only through the creation of optoelectronic devices operating in various ranges of the optical spectrum simultaneously (multi-spectral electro-optical devices). The report presents the results of work on the creation of thermal lenses, working simultaneously in two regions of the spectrum of 3-5 microns and 8-12 microns, shows the results of the specific development of such lenses and their aberration characteristics.

关键词： lens deign IR high-speed infrared lenses malty-spectral range

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Development and Experimental Verification of an Intraocular Scattering Model

Development and Experimental Verification of an Intraocular ...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Jiang, Chong-Jhih Jhong, Tian-Siang Chen, Yi-Chun Sun, Ching-Cherng Natl Cent Univ Dept Opt & Photon Jhongli 320 Taiwan

ISBN: (纸本)9780819487384

An intraocular scattering model was constructed in human eye model and experimentally verified. According to the biometric data, the volumetric scattering in crystalline lens and diffusion at retina fundus were developed. The scattering parameters of cornea, including particle size and obscuration ratio, were varied to make the veiling luminance of the eye model matching the CIE disability glare general formula. By replacing the transparent lens with a cataractous lens, the disability glare curve of cataracts was generated and compared with that of transparent lenses. The MTF of the intraocular scattering model showed nice correspondence with the data measured by a double-pass experiment.

关键词： intraocular scattering volumetric scattering veiling luminance disability glare cataractous lens double pass

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design of a free-form lens system for short distance projection

Design of a free-form lens system for short distance project...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Yang, Bo Lu, Kan Zhang, Wei Dai, Fujian Shanghai Univ Sci & Technol Shanghai Key Lab Contemporary Opt Syst Sch Opt Elect & Comp Engn Shanghai 200093 Peoples R China Zhejiang Sunny Opt Co Ltd R&D Dept Yuyao 315400 Zhejiang Peoples R China

ISBN: (纸本)9780819487384

A free-form lens system design is proposed for short distance projection. Free-form surface shape and non-rotational symmetrical structure provide us more freedoms for optimization. The catadioptric structure is also used to reduce the overall length of the whole system. The designed projector lens system consists of two parts. The first part is a rotationally symmetrical lens system which corrects the basic aberrations. The second part contains a free-form lens and a reflector which correct the distortion and other aberrations. We achieve 55inch projected image size at a display screen which is 300mm away from the lens system. The maximum distortion for all fields at all distances is less than 3%.

关键词： optical engine Projection lens Free-form Catadioptric Least-square fitting

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Progressive addition lens design by optimizing NURBS surface

Progressive addition lens design by optimizing NURBS surface

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Liu, Yen-Liang Hsu, Wei-Yao Cheng, Yuan-Chieh Su, Guo-Dong Natl Taiwan Univ Grad Inst Photon & Optoelect 1Sec 4Roosevelt Rd Taipei 10617 Taiwan Natl Appl Res Labs Instrument Technol Res Ctr Hsinchu 300 Taiwan

ISBN: (纸本)9780819487384

Progressive addition lenses (PAL) are used to compensate presbyopia, which is induced by losing accommodation of elder eyes. These eyes need different optical power provided by eye glasses while watching objects at different distance. A smaller optical power is required in further distance and a larger one in nearer zone. A progressive addition lens can provides different power requirements in one piece of lens. This paper introduces a whole process of PAL production, from design, fabrication, to measurement. The PAL is designed by optimizing NURBS surface. Parameters of merit function are adjusted to design lenses with different specifications. The simulation results confirm that the power distributes as expected and cylinders are controlled under an acceptable level. Besides, sample lenses have been produced by injecting polycorbonate to the molds. Finally, Ultra Accuracy 3D Profilemeter is used to measure the sample PALs. Practical examinations shows that our designs are achievable and feasible in practice use.

关键词： progressive addition lens NURBS precision machining ultrahigh accurate 3 dimensional profilemeter UA3P

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The design of Beam Shaping Focused lens Applied in Solar Energy Concentration

The Design of Beam Shaping Focused Lens Applied in Solar Ene...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Ma, Shih-Hsin Lee, Chi-Hung Lee, Yun-Parn Wu, Jih-Huah Tseng, Chun-Ming Feng Chia Univ Dept Photon Taichung 40724 Taiwan Feng Chia Univ Dept Elect Engn Taichung Taiwan Ming Chuan Univ Dept Elect Engn Taoyuan Taiwan Ming Chuan Univ Dept Biomed Engn Taoyuan Taiwan

ISBN: (纸本)9780819487384

In this paper, we proposed a new configuration of concentrator in solar PV system. A special optical system in the concentrator used in focusing sun light to solar cell is proposed, the system compose of an aspherical surface and a specific diffusing surface. The uniform-squared light pattern is obtained on the solar cell, the shape and size of light pattern can be modulated by the parameters of the diffusing surface. In order to decrease the weight of the lens, the concentrator in Fresnel lens type is built at last. Besides, the optical efficiencies formed by the aspherical concentrator and Fresnel concentrator are about 92% and 77%, the concentrations are about 720mW/mm(2) and 640mW/mm(2), and the acceptance angles are about 0.35 degrees and 0.30 degrees, respectively. The tolerances in assembling the component of the concentrator are also discussed in detail.

关键词： Photovoltaic solar cell solar energy concentrator

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Cryogenic lens design Case Study: Gemini Planet Imager Spectrograph

Cryogenic Lens Design Case Study: Gemini Planet Imager Spect...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Thibault, S. Univ Laval Dept Phys Quebec City PQ G1V 0A6 Canada

ISBN: (纸本)9780819487384

Making a lens design working at cryogenic temperature is a real challenge. Both optical and mechanical designer must work together to prevent problems during operation. The Gemini Planet Imager (GPI), currently under construction will be a facility instrument for the 8-m Gemini South telescope. The science instrument is a cryogenic integral field spectrograph based on a lenslet array. The integral field nature of the instrument allows for a full mapping of the focal plane at coarse spectral resolution. With such a data cube, artifacts within the PSF such as residual speckles can be suppressed. Additionally, the initial detection of any candidate planet will include spectral information that can be used to distinguish it from a background object: candidates can be followed up with detailed spectroscopic observations. The optics between the lenslet array and the detector are essentially a standard spectrograph with a collimating set of lenses, a dispersive prism and a camera set of lenses in a folded assembly. This paper describes the process from the first preliminary design to the final cryogenic system for both optical and mechanical design to achieve cryogenic working solution. We also discussed the assembly procedure (room temperature vs cryogenic compensation), the test support equipments and finally the laboratory optical performances over the field of view.

关键词： Planet imager cryogenic spectrograph test image quality

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optical transmittance of high-efficiency cavity with photon recycling

Optical transmittance of high-efficiency cavity with photon ...

引用

conference on current developments in lens design and optical engineering XII/Advances in Thin Film Coatings VII

作者： Lin, Che-Chu Lee, Xuan-Hao Chien, Wei-Ting Chen, Hen-Xiang Sun, Ching-Cherng Natl Cent Univ Dept Opt & Photon Inst Lighting & Display Sci Chungli 320 Taiwan

ISBN: (纸本)9780819487384

A planar-exit lighting surface is not only used in the luminaires but also useful in the display backlights and other illumination systems. Most planar-exit lighting surfaces are made by edge-lit with line light source or 1-D LED array. If it is not edge-lit type, the light source can be two-dimensional, but a cavity is required. In this paper, a high-efficiency cavity providing extremely high energy transmittance with photon recycling is reported and demonstrated. The cavity contains a diffuser and the high reflectivity surfaces. The optical efficiency of the cavity is calculated by a formula with considering photon recycling. Furthermore, various kinds of diffusers are applied to change the optical transmittance as well as the light pattern. When the reflectivity of the inner wall of the lighting cavity is about 96 %, the optical efficiency of the cavity is higher than 90 % with several diffusers. The experimental measurement as well as the calculation is demonstrated in the paper.

关键词： Lighting cavity photon recycling optical efficiency diffuser

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