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

共 467 条记录，以下是31-40 订阅

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design and Implementation of Recording and Readout System for Micro-holographic optical Data Storage

Design and Implementation of Recording and Readout System fo...

引用

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

作者： Takashima, Yuzuru Hesselink, Lambertus Stanford Univ Dept Elect Engn Stanford CA 94305 USA

A lens design having constant working distance while having variable recording depth for micro holographic data storage system has been proposed. Variation of focal length is suppressed for the entire depth within 1% ... 详细信息

ISBN: (纸本)9780819482822

关键词： Holographic Storage Aberrations lens design

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design of a reflective/diffractive hybrid optical system

Design of a reflective/diffractive hybrid optical system

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conference on current developments in optical design and engineering vii

作者： Shen, MZ Guo, YH Lu, ZK Chinese Acad Sci Inst Opt & Elect Chengdu 610209 Peoples R China

In this paper we describe the design of a reflective / diffractive hybrid optical system, which features no obscuration, re-imagining system with 100% cold shield efficiency, 4 degrees of field of view, near diffracti... 详细信息

ISBN: (纸本)0819428841

关键词： infrared optical systems optical design hybrid optical system

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Analytic formulation of a spherochromatic collimator lens 11

Analytic formulation of a spherochromatic collimator lens

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conference on current developments in lens design and optical engineering XXI

作者： Gonzalez-Acuna, Rafael G. Gutierrez-Vega, Julio C. Tecnol Monterrey Photon & Math Opt Grp Monterrey Mexico

We introduce a closed-form formula to design a spherochromatic collimator singlet lens. The light for three different wavelengths is collimated at the output of the lens. We test the singlet lens using ray-tracing met... 详细信息

ISBN: (数字)9781510637719

ISBN: (纸本)9781510637719

关键词： optical design aspheric collimator

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Genetic algorithm and its application in lens design 6

Genetic algorithm and its application in lens design

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current developments in optical design and engineering VI conference

作者： Chen, XG Yamamoto, K Olympus Optical Co. Ltd. (Canada) Olympus Optical Co. Ltd. (Japan)

ISBN: (纸本)0819422517

Genetic algorithm and its application in lens design is studied. A new algorithm is presented which includes a genetic algorithm (GA) and damped least square (DLS) method. The convergence property of GA in lens design is demonstrated. A GA. generated design is obtained without artificial intervention. The aberration correction has to be done by DLS, and the result is close to the starting configuration generated by GA.

关键词： genetic algorithm lens design optimization

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ALGEBRAIC APPROACH FOR OPTIMIZING A TRIPLET lens

ALGEBRAIC APPROACH FOR OPTIMIZING A TRIPLET LENS

引用

conference on current developments in optical design and optical engineering III

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

ISBN: (纸本)081941249X

Using the concept of matrix theory for lens design, a triplet lens can be replaced by a singlet lens which has an equivalent system matrix without changing its optical performance. Then, using third order Siedel's first aberration coefficient of the singlet lens is equal to zero, and the focal length and the physical length of the triplet lens are kept constant as constraints, an algebraic technique for optimizing a triplet lens is derived. Results show that this new optimizing technique is more effective than other conventional techniques for optimizing a triplet lens in the case of plane waves.

关键词： lens design Electronic filtering Monochromatic aberrations Refractive index Spherical lenses Geometrical optics optical design optical properties Physics Image quality

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design and implementation of multi-layer and multi-bit micro holographic optical data storage employing blue lasers

Design and implementation of multi-layer and multi-bit micro...

引用

conference on current developments in lens design and optical engineering XIII

作者： Takashima, Yuzuru Hesselink, Lambertus Univ Arizona Coll Opt Sci Tucson AZ 85721 USA

ISBN: (纸本)9780819492036

A zoom objective lens for a multi-layer optical recording has been designed. A newly proposed optical power arrangement enables varying back focal length while focal length invariant by a linear movement of single zooming component. The zoom lens is implemented into multi-layer and multi-bit holographic recording system employing 405 nm blue lasers.

关键词： Objectives optical design Holography Aspheric lenses lens design optical storage Zoom lenses Distance measurement optical components optical recording

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Novel technique for measurement of centration errors of complex, completely mounted multi--element objective lenses

Novel technique for measurement of centration errors of comp...

引用

conference on current developments in lens design and optical engineering vii

作者： Heinisch, J. Dumitrescu, E. Krey, S. Triopt GmbH Hafenstr 39 D-22880 Wedel Germany

ISBN: (纸本)0819463671

The size and the focal length of camera objectives (e.g. cell phones or digital cameras) are becoming smaller and smaller. At the same time the quality requirements are increasing. Besides surface accuracy, the imaging quality of the complete optics is mainly influenced by the alignment errors of the single elements. TRIOPTICS has developed a new technology called Multilens((R)) in order to measure the centering errors of all single surfaces within an objective lens with up to 40 surfaces or more. We achieve accuracies in the range of an arc second. During the measurement the deviation of each center or curvature with respect to a reference axis is measured. These data are further processed in order to provide the shift and tilt of an individual lens or group of lenses in respect to a given reference axis (Patent pending Ref. 1). Applications mainly include the measurement of cell phone and digital camera lenses. However, any type of objective lens from endoscope up to very complex objective lenses used in microlithography can be measured with highest accuracy. The method has been extended to measure also the aspherical axis of lenses.

关键词： centering centration lens optical surface objective aspherical axis digital camera cell phone camera tilt shift

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FISHEYE PROJECTION lens FOR LARGE-FORMAT FILM

FISHEYE PROJECTION LENS FOR LARGE-FORMAT FILM

引用

conference on current developments in optical design and optical engineering III

作者： DOSHI, R HUGHES LEITZ OPT TECHNOL MIDLAND L4R 2H2ONCANADA

In this paper, we present a new fisheye projection lens for 8 perforation 70 mm format film. The lens has an aperture of F/2.4 and a total field of view of 163 degree(s). We discuss design considerations, and compare ... 详细信息

ISBN: (纸本)081941249X

关键词： Modulation transfer functions Distortion lens design Projection systems Glasses Tolerancing Laminated object manufacturing Optics manufacturing Spatial frequencies Manufacturing

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optical design for imaging spectroscopy

Optical design for imaging spectroscopy

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conference on current developments in lens design and optical engineering IV

作者： Mouroulis, P Green, RO CALTECH Jet Prop Lab Pasadena CA 91109 USA

design examples are given for imaging spectrometer systems operating in the solar reflected spectrum. design considerations and procedures are outlined for incoherently and coherently coupled systems. The case of a pa... 详细信息

ISBN: (纸本)0819450464

关键词： optical design imaging spectroscopy concentric spectrometers convex/concave gratings

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An optimized design of a scanning confocal probe

An optimized design of a scanning confocal probe

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conference on current developments in lens design and optical engineering vii

作者： Qiu, Z. R. Qin, J. Zhang, H. W. Zhang, G. X. Lu, Stephen C. Tianjin Univ State Key Lab Precis Measuring Technol & Instrume Tianjin 300072 Peoples R China Univ Southern Calif Dept Aerosp & Mech Engn Los Angeles CA 90089 USA

ISBN: (纸本)0819463671

Basing on the principle of dynamic active confocal measuring method, a non-contact probe was introduced. The relation between the displacement of the object measured and the displacement of the oscillating unit was established by applying to the measure principle. To find the effect way to improve the output signal, a mathematical modal of the photoelectric signal was proposed. According to the mathematical modal, the diameter of the pinhole was decided and the optical path was adjusted, which improved the performance of the probe. It valuable to emphasize that the double lens oscillating unit was the crucial parts of the mechanical and optical structure. The tuning fork stimulating, inductive coils and the pinhole and photodiode adjuster device were designed according to the theoretical analysis, which were more convenient to the measure task. The stability of the oscillating unit was tested;and the optical and mechanical performance of the probe was validated by experiments using gage blocks combining with a micro-motion measuring mount model. The cost of a micro-displacement testing sensor was saved in designing of this kind of probe. A more accurate signal processing method was discussed in this paper.

关键词： dynamic active confocal mathematical modal structure stability

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