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GLOBAL OPTIMIZATION USING THE Y-YBAR DIAGRAM

GLOBAL OPTIMIZATION USING THE Y-YBAR DIAGRAM

引用

5TH CONF ON current developments IN optical design AND optical engineering

作者： BROWN, DM Teledyne Brown Engineering (United States)

ISBN: (纸本)0819406554

Software is under development at Teledyne Brown engineering to represent a lens configuration as a y-ybar or Delano diagram. The program determines third-order Seidel and chromatic aberrations for each configuration. It performs a global search through all valid permutations of configuration space and determines, to within a step increment of the space, the configuration with smallest third-order aberrations. The program was developed to generate first-order optical layouts which promised to reach global minima during subsequent conventional optimization. Other operations allowed by the program are: add or delete surfaces, couple surfaces (for Mangin mirrors), shift the stop position, and display first-order properties and the optical layout (surface radii and thicknesses) for subsequent entry into a conventional lens-design program with automatic optimization. Algorithms for performing some of the key functions, not covered by previous authors, are discussed in this paper.

关键词： optical engineering optical design Mirrors Refraction Software development Vignetting Algorithm development Chromatic aberrations lens design Bessel functions

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AN ATTEMPT TO DEVELOP ZOOM lens design EXPERT SYSTEM

AN ATTEMPT TO DEVELOP ZOOM LENS DESIGN EXPERT SYSTEM

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5TH CONF ON current developments IN optical design AND optical engineering

作者： WENG, ZC CHEN, ZY YANG, YH REN, T CONG, XJ YAO, YC HE, FL LI, YY State Key Laboratory of Applied Optics Changchun Institute of Optics and Fine Mechanics Academia Sinica P.O. Box 1024 Changchun 130022 China Dept. of Computer Science Jilin University Changchun China

We have developed zoom lens design expert system intended to operate with little user intervention. The paper puts the emphasis on the knowledge representation, system architecture, reasoning and control strategy of t... 详细信息

ISBN: (纸本)0819406554

关键词： Expert systems

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REVISION OF THE SEIDEL ABERRATION THEORY FOR APPLICATION IN RANGE OF SMALL VIEWING FIELD AND LARGE APERTURE

REVISION OF THE SEIDEL ABERRATION THEORY FOR APPLICATION IN ...

引用

5TH CONF ON current developments IN optical design AND optical engineering

作者： KANG, SG LU, KC ZHU, YF Harbin Institute of Technology (China)

ISBN: (纸本)0819406554

The revisions of enlarging all the aberrations related to aperture to the seventh order for the Seidel aberration theory have been proposed in this paper. The practice of the revised theory in the range of small viewing field and large aperture (for example, the lens of microscope and telescope) has proven that the theory is applicable in this scale.

关键词： Monochromatic aberrations Aberration theory optical design Microscopes optical engineering Telescopes Chromatic aberrations Glasses Lutetium Wavefronts

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RAYTRACING HOMOGENIZING MIRRORS FOR SYNCHROTRON X-RAY-LITHOGRAPHY

RAYTRACING HOMOGENIZING MIRRORS FOR SYNCHROTRON X-RAY-LITHOG...

引用

5TH CONF ON current developments IN optical design AND optical engineering

作者： HOMER, M ROSSER, RJ SPEER, RJ Imperial College of Science Technology and Medicine (United Kingdom) Princeton X-Ray Laser Inc. (United States) Grating Measurements Ltd. (United Kingdom)

ISBN: (纸本)0819406554

An original plastic-lens array molded integrally as one block having a function of forming a unit-magnification erect image has been developed. The lens array consists of eight lens devices. The lens device has a roof prism, a reflecting v-groove, and a pair of convex-lens surfaces. A prototype of the lens arrays are arranged side by side. Thickness of the lens array is 4.5 mm, distance between object and image planes is 14.4 mm, array pitch is 1.3 mm, and the effective imaging region is 220 mm. The average modulation transfer function (MTF) at 41 p/mm of the lens array is 76% in the row direction (Y-direction) and 80% in the direction (X-direction) normal to Y-direction. The average F/NO in line-scanning is 1.8. The average irradience unevenness in line-scanning is 17%. The focal depth is +/- 0.6 mm in the area with the MTF being 60% or more. With this prototype a high-resolution image was attained. So, the lens arrays can be applied to imaging devices for use in a compact facsimile, image scanner, LED printer, and so on.

关键词： Mirrors Lithography Synchrotrons Ray tracing X-ray lithography Holmium Reflectivity optical engineering optical design X-rays

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AUTOMATIC ADJUSTING optical-AXIS FOR LINEAR CCD SCANNER

AUTOMATIC ADJUSTING OPTICAL-AXIS FOR LINEAR CCD SCANNER

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5TH CONF ON current developments IN optical design AND optical engineering

作者： CHANG, RS CHEN, DC National Central Univ. (Taiwan)

ISBN: (纸本)0819406554

A technique which automatically adjusts the optical axis of a CCD image sensor with the lens for a linear CCD image scanner is described. The error of the alignment is measured to the magnitude and pulse-width of the detected signal from the linear CCD image sensor, calculating the value of error by computer and driving the stepping motor to achieve the automatic adjustment.

关键词： Charge-coupled devices CCD image sensors Signal detection Scanners Image sensors Sensors Manufacturing Oscilloscopes optical fabrication optical scanning systems

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ONLINE RAPID TESTING OF optical TRANSFER-FUNCTION

ONLINE RAPID TESTING OF OPTICAL TRANSFER-FUNCTION

引用

5TH CONF ON current developments IN optical design AND optical engineering

作者： XIANG, CX XIANG, Y Changchun Institute of Optics and Fine Mechanics Academia Sinica China

ISBN: (纸本)0819406554

A new simple method for on-line rapid testing of the optical transfer function (OTF) of camera lenses has been developed, in which the digital fast Fourier transform method is employed with using a linear array CCD for sampling the linear spread function (LSF) of the lens under test. The main advantage of our new method is that test of off-axis OTF need not to rotate the lens under test or the collimator. Obviously, this method is different from the present complicated test methods. Therefore, this method is simple and easy to accomplish on-line automatic test of OTF. The time required for testing nine-position OTF such as on-axis, ±0.7 and±l viewfields in both meridional and sagittal plane is less than 2-3 minutes. We also have established an OTF testing formula relative to the testing factors. Based on it, the testing accuracy of OTF is discussed with the idea of relative accuracy for the first time. The theoretical results are agreement with the experiments. Precision is 1-2%. The relative errors of both the modulation transfer function (MTF) and phase transfer function (PTF), which change with spatial frequency f, are about 10% and 3% at f=50c/mm, respectively. © 1991 SPIE. All rights reserved.

关键词： optical transfer function

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TECHNIQUES FOR designING HYBRID DIFFRACTIVE optical-SYSTEMS

TECHNIQUES FOR DESIGNING HYBRID DIFFRACTIVE OPTICAL-SYSTEMS

引用

5TH CONF ON current developments IN optical design AND optical engineering

作者： BROWN, DM PITALO, SK Teledyne Brown Engineering (United States)

ISBN: (纸本)0819406554

The authors analyzed techniques for designing lenses consisting of conventional reflective or refractive elements used in conjunction with binary optical elements (BOEs), and reviewed the use of BOE correctors in systems with both rotational and bilateral symmetry. These systems add a large number of degrees of freedom, such that almost any arbitrary wavefront shape can be obtained. For this reason, automatic optimization with BOEs requires special considerations; especially, tilted or decentered systems, wide-waveband systems, or wide field-of-view systems. If caution is not exercised, one can easily consume large amounts of expensive cpu time only to converge on nonoptimal dead-end solutions. A typical situation that occurs is the convergence upon a solution where the performance is diffraction limited at the finite number of defined field points, but strongly aberrated at field points in between. The key to converging on an optimal solution is the proper use of user defined constraints. The authors studied how to select which BOE coefficients to vary and how to choose field points in order to increase the probability of converging on optimal solutions.

关键词： optical design Cameras Monochromatic aberrations Wavefronts optical engineering lens design optical components lenses Chemical elements Diffraction

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current developments in optical design and optical engineering

Current Developments in Optical Design and Optical Engineeri...

引用

current developments in optical design and optical engineering 1991

The proceedings contain 54 papers. The topic discussed include: global optimization using the y-ybar diagram;two-mirror projection systems for simulating telescopes;two-mirror projection systems for simulating telescopes;surface contributions of the wave aberrations up to the eighth degree;membrane light modulators: engineering design considerations;plastic lens array with the function of forming unit magnification erect image using roof prisms;spatial frequency selective error sensing for space-based, wide field-of-view, multiple-aperture imaging systems;novel interferometer setup for evaluating the sum of surface contributions to transmitted wavefront distortion;and alignment of an aspheric mirror subsystem for an advanced infrared catadioptric system.

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design OF PHOTOLITHOGRAPHIC lensES WITH LARGE FIELD AND APPROXIMATE BITELECENTRICITY

DESIGN OF PHOTOLITHOGRAPHIC LENSES WITH LARGE FIELD AND APPR...

引用

CONF ON current developments IN optical engineering 4

作者： WANG, XC LIN, DJ Institute of Optics and Electronics (China) Institute of Optics and Electr (China)

ISBN: (纸本)0819403954

This paper introduced a new type of tenses with approximate bite lecentricity for *** has the quasi-diffraction Limited image quality in the range of large field size and keeps fine overlay accuracy as *** corrections of sagittal aberrations and higher order aberrations are considered in the optical design. Finaty, the MTF of two results, with NAO•2, magnification x, field diameter 140mm, and NAO•28, magnification lOX, field diameter 140mm, were given.

关键词： Monochromatic aberrations optical design lenses optical engineering Distortion Diffraction lens design Modulation transfer functions Semiconducting wafers Optics manufacturing

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CORRECTING CHROMATIC ABERRATION IN HOLOGRAPHIC optical-SYSTEMS

CORRECTING CHROMATIC ABERRATION IN HOLOGRAPHIC OPTICAL-SYSTE...

引用

CONF ON current developments IN optical engineering 4

作者： YAMAGISHI, F KATO, M MAEDA, S INAGAKI, T Fujitsu Labs. Ltd. (Japan) Fujitsu Labs. Ltd. (Japan)

ISBN: (纸本)0819403954

A new method for correcting comatic aberration in holographic optical systems which uses constant optical path(COP) has been developed. The sum of the optical path lengths from an object wavefront to an image wavefront remains constant, and achromatic holographic systems can be easily calculated. Using COP, a new focusing triplet was designed with wavelength tolerance of 9 nm for entrance and exit numerical apertures of 0.5. This is 15 times larger than that for conventional single holographic lens.

关键词： Holography Chromatic aberrations Holograms Diffraction lens design Spatial frequencies Wavefronts Tolerancing optical engineering Laser optics

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