An alternative to Damped Least Squares (DLS) optimization of lens systems is described that involves Generalized Simulated Annealing (GSA) techniques in conjunction with DLS. The resultant method can often overcome lo...
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Numerical analysis and simulation of a technique for automatic alignment of a three-mirror off-axis telescope were carried out using a method of reverse optimization and end-to-end measurements. The techniques uses Ha...
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A null-lensdesign approach for centrally obscured components is described. This optimization method, which explicitly takes advantage of the obscuration, can achieve improved wavefront quality of the null test for a ...
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ISBN:
(纸本)0892527145
A null-lensdesign approach for centrally obscured components is described. This optimization method, which explicitly takes advantage of the obscuration, can achieve improved wavefront quality of the null test for a given level of lens complexity than a design approach that does not take advantage of the obscuration. The fabricated aspheric part, while likely to be different in shape from that predicted by the null test by a constant phase factor, will still allow satisfactory performance of the system.
A satisfactory bifocal contact lens has not yet reached the marketplace because of deficiencies in the present designs. The two-zone concentric design allows both the near and far images to be present simultaneously, ...
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ISBN:
(纸本)0892527145
A satisfactory bifocal contact lens has not yet reached the marketplace because of deficiencies in the present designs. The two-zone concentric design allows both the near and far images to be present simultaneously, however the image quality is not very good. Recently several new bifocal contact lenses with multiple zones have been suggested. This paper presents computer calculations of the image quality of several of these new designs. The zone-plate design, with an intermediate blaze angle, gives the best image quality of the lenses that were examined.
A monocentric element, that is, one whose surfaces are concentric, can be valuable in an opticaldesign. Such elements are, however, very difficult to fabricate. A departure from true monocentricity will make the fabr...
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ISBN:
(纸本)0892527145
A monocentric element, that is, one whose surfaces are concentric, can be valuable in an opticaldesign. Such elements are, however, very difficult to fabricate. A departure from true monocentricity will make the fabrication problem more tractible and can usually be achieved without loss of design performance. A relationship is derived which will indicate the minimum departure from ononcentricity necessary to make fabrication feasible.
作者：
BARTON, GGFELDMAN, SMr. Sidney Feldman formerly with the Naval Applied Science Laboratory
is presently with the Radiation Division of the Naval Surface Weapons Center White Oak Silver Spring Maryland. He planned and supervised laboratory experiments of many optical systems for fleet evaluation several of his designs now being standard in the fleet. He received his BA degree in Physics from Brooklyn College in 1941 and majored in Physics at the Brooklyn Polytechnic Institute. His professional memberships include the Optical Society of America American Association for the Advancement of Science and The Scientific Research Society of North America. He was the recipient of the Naval Ordnance Development Award in 1945 the Superior Achievement Award in 1957 the Quality Salary Increase Award in 1965 the Superior Accomplishment Award in 1967 1970 and 1979. Additionally he has been granted patents for a relamping tool for searchlights (1962) a lamp positioning mechanism for searchlights (1963) a daylnight digital sextant (1973) a portable sextant-computer system (1974) and with Mr. George Barton the remote-controlled LLLTV camera-sextant (1976) the automatic passive LLLTV-rangefinder (1977) and a patent disclosure for the omnidirectional transceiver (1980). Mr. George G. Barton has been employed by the Naval Research Laboratory
Washington D. C. for the past ten years in the scientific and military application design engineering and fabrication of low light level TV camera systems. He was previously associated with the Smithsonian Institution and Northwestern University in the application of TV technology in astronomical investigations. He attended New York University Newark College of Engineering and New Mexico State University where he majored in Physical Optics. Presently he is with his own company BISMARC Inc. Harker's Island N.C. where he is involved principally in the design manufacture and marketing of sonar systems such as the unique VIDISEA fishscope research and development in electrooptic systems an
During periods of radio silence under Emission Control, communication depends on the slow ship-to-ship, manual-visual, 8-10 wpm Morse code signaling shutter searchlight employing the ac 1000-watt incandescent or the a...
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During periods of radio silence under Emission Control, communication depends on the slow ship-to-ship, manual-visual, 8-10 wpm Morse code signaling shutter searchlight employing the ac 1000-watt incandescent or the ac 1000-watt compact arc mercury-xenon lamp. These sources can be replaced by the dc compact arc xenon lamp to provide longer daylight ranges and highspeed (100 wpm teletype, 150 wpm Morse code, voice, etc.) communication since this source has superior brightness and the facility of considerably more rapid modulation. The excessive weight and size of the ac-dc power convertor and modulating circuitry which had prevented use of the dc xenon lamp have been overcome by developments in solid state electronics such as the rapid, high current, simmer-flash, 100 to one light output xenon lamp pulsing using the reliable, uncomplicated, low-cost silicon controlled rectifier shunt switch which could eliminate the mechanical signaling shutter. Laboratory and sea evaluations have proved the feasibility of and provided the long daylight high-speed optical communication ranges that could be attained from operation of the dc 1000-watt and 2200-watt xenon lamps at the focus of 12-inch, 18-inch searchlights and in the Fresnel lens omni-directional beacon which a command ship uses to signal all ships in a task force at once. With these advances, optical communication provides the highspeed capability of radio communication, particularly, also, with the new omnidirectional transceiver.
The proceedings contain 68 papers. The topics discussed include: distributed computing for opticaldesign;current status of the synthesis of optical systems (SYNOPSYS) lensdesign program;new developments in CODE V op...
The proceedings contain 68 papers. The topics discussed include: distributed computing for opticaldesign;current status of the synthesis of optical systems (SYNOPSYS) lensdesign program;new developments in CODE V optimization;opticaldesign programs at imperial college;opticaldesign using small dedicated computers;dedicated minicomputers in opticaldesign;consideration for minicomputer applications to large opticaldesign programs;microcomputers and opticaldesign;easy to use optical program for commodore PET computer;new approach to the optimization of lens systems;ten years of lensdesign with Glatzel's adaptive method;aberration balancing criterion for nondiffraction-limited lenses;and application of Zernike polynomial lens sensitivity program ZEST to optimizing a lensdesign.
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