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Investigation of the optical and Structural Properties of WO₃ Thin Films with Different Sputtering Power Supplies

Investigation of the Optical and Structural Properties of WO...

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conference on current developments in Lens design and optical engineering XIII

作者： Chen, Hsi-Chao Jan, Der-Jun Chen, Chien-Han Huang, Kuo-Ting Luo, Yu-Siang Chen, Jia-Min Natl Yunlin Univ Sci & Technol Grad Sch Optoelect Yunlin 64002 Taiwan

ISBN: (纸本)9780819492036

The purpose of this research was to investigate the optical and structural properties of tungsten oxide (WO3) thin films deposited with three different sputtering power supplies: direct current (DC), DC pulse and radio frequency (RF). These WO3 thin films were deposited on ITO glass and silicon substrate with different gas ratios of oxygen and argon (O-2/Ar ratio). WO3 thin film is the role of the electrochromic window was resulted from the advantages of large variation in optical density, high response efficiency, no toxicity and low cost. The experimental results showed that optical intensity increased with the increasing of O-2/Ar ratio and all films have the 950cm(-1) peak which the bonding of W+6=O in Raman spectra. Hence, the O-2/Ar ratio was changed from 0.4 to 0.8 to study the ability of coloring and bleaching for the three different power supplies. Anyways, the WO3 thin films had the best electrochromic property at the O-2/Ar ratio of 0.7, 0.6 and 0.6 for DC, DC pulse, and RF, respectively. The transmittances could be over 75% for all films at as-deposited and the deposition rates were between 0.8 and 0.1 angstrom s(-1). Simultaneously, the transmittance variations (Delta T) were 51%, 57% and 53% for DC, DC pulse, and RF power sources at wavelength of 550 nm, respectively. The coloration ability of WO3 thin film deposition with power supply of DC pulse was better than that of the DC and RF.

关键词： Tungsten oxide (WO3) direct current (DC) magnetron sputtering pulsed DC sputtering radio frequency (RF) sputtering Raman spectra

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design and fabrication of the near-ultraviolet birefringent Solc filter for the NASA IRIS solar physics mission

Design and fabrication of the near-ultraviolet birefringent ...

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conference on current developments in Lens design and optical engineering XIII

作者： Berger, Thomas Mudge, Jason Holmes, Buck Searcy, Paul Wuelser, Jean-Pierre Lemen, James Title, Alan Adv Technol Ctr Palo Alto CA 94304 USA

ISBN: (纸本)9780819492036

The NASA Interface Region Imaging Spectrograph (IRIS) mission is a Small Explorer (SMEX) satellite mission designed to study plasma dynamics in the "interface region" between the Sun's chromosphere and corona with high spatial, spectral, and temporal resolution. The primary instrument is a dual Czerny-Turner spectrograph fed by a 20-cm Cassegrain telescope measuring near-and far-ultraviolet (NUV, FUV) spectral lines in the ranges 133-141 nm and 278-283 nm. To determine the position of the slit on the solar disk, a slit-jaw imaging system is used. The NUV slit-jaw imaging system produces high spatial resolution images at two positions in the Mg II 280 nm spectral line complex using a birefringent Solc filter with two wide-band interference pre-filters for spectral order selection. The Solc filter produces a 0.36 nm full-width at half-maximum (FWHM) filter profile with low sidelobes and a peak transmission of 15% at 279.6 nm. The filter consists of two "wire grid'' polarizers surrounding 8 quartz waveplates configured in a modified Solc "fan" rotational pattern. The elements are optically coupled using DC200 silicon-based grease. The NUV Solc filter is sealed in a windowed cell to prevent silicon contamination of the FUV channel. The design of the sealed cell and assembly of the filter into the cell were among the most challenging optomechanical aspects of the IRIS spectrograph system.

关键词： Optics imaging birefringent filter near-ultraviolet far-ultraviolet satellite systems solar spectrum

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Planar Holographic Spectrum-Splitting PV Module design

Planar Holographic Spectrum-Splitting PV Module Design

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conference on High and Low Concentrator Systems for Solar Electric Applications vii

作者： Gordon, Michael Zhang, Deming Vorndran, Shelby Russo, Juan M. Luscombe, Christine K. Shaheen, Sean E. Kostuk, Raymond K. Univ Arizona Coll Opt Sci 1630 E Univ Blvd Tucson AZ 85721 USA Univ Arizona Dept Elect & Comp Engn Tucson AZ 85721 USA Univ Washington Dept Mat Sci & Engn Seattle WA 98195 USA Univ Washington Mol Engn & Sci Inst Seattle WA 98195 USA Univ Denver Dept Phys & Astron Denver CO 80208 USA

ISBN: (纸本)9780819491855

A design is presented for a planar spectrum-splitting photovoltaic (PV) module using Holographic optical Elements (HOEs). A repeating array of HOEs diffracts portions of the solar spectrum onto different PV materials arranged in alternating strips. Several combinations of candidate PV materials are explored, and theoretical power conversion efficiency is quantified and compared for each case. The holograms are recorded in dichromated gelatin (DCG) film, an inexpensive material which is easily encapsulated directly into the panel. If desired, the holograms can focus the light to achieve concentration. The side-by-side split spectrum layout has advantages compared to a stacked tandem cell approach: since the cells are electrically isolated, current matching constraints are eliminated. Combinations of dissimilar types of cells are also possible: including crystalline, thin film, and organic PV cells. Configurations which yield significant efficiency gain using relatively inexpensive PV materials are of particular interest. A method used to optimize HOE design to work with a different candidate cells and different package aspect ratios is developed and presented. (Aspect ratio is width of the cell strips vs. the thickness of the panel) The relationship between aspect ratio and HOE performance properties is demonstrated. These properties include diffraction efficiency, spectral selectivity, tracking alignment sensitivity, and uniformity of cell illumination.

关键词： Holography holographic optical element photovoltaics spectrum-splitting low concentration

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current developments in Lens design and optical engineering XII;and Advances in Thin Film Coatings vii

Current Developments in Lens Design and Optical Engineering ...

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current developments in Lens design and optical engineering XII;and Advances in Thin Film Coatings vii

ISBN: (纸本)9780819487384

The proceedings contain 18 papers. The topics discussed include: linear systems formulation of image analysis in the presence of both aberrations and surface scatter;transmission losses in infrared anti-reflection coatings due to water absorption;design of a free-form lens system for short distance projection;progress in the SMS design method for imaging optics;distributed wavefront coding for wide angle imaging system;progressive addition lens design by optimizing NURBS surface;testing and design of a low-cost large scale solar simulator;effects of substrate heating and vacuum annealing on optical and electrical properties of alumina-doped ZnO films deposited by DC magnetron sputtering;and the research of relationships between residual stress and columnar angles in oblique deposition of magnesium fluoride thin films.

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Advanced optical design for DNA sequencing systems

Advanced optical design for DNA sequencing systems

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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

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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...

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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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Cryogenic Lens design Case Study: Gemini Planet Imager Spectrograph

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

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

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

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

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

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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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