The 'concentric-aplanatic' method used for lensdesign is described in many papers. While many shapes and forms of these lenses have been shown, performance evaluation of these lenses has never been published....
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ISBN:
(纸本)0819403954
The 'concentric-aplanatic' method used for lensdesign is described in many papers. While many shapes and forms of these lenses have been shown, performance evaluation of these lenses has never been published. How good is the method? Can one designoptical systems using this technique that have acceptable image quality? This paper will deal step by step with these questions, both from first principles and by the basis of third order theory. Performance evaluations will be given for the lenses designed.
The Shack-Hartmann (S-N) wavefront sensor, which is derived from the classical Hartmann testing method, is one of the most convenient methods available for the optimal testing of telescopes on site on natural stars. I...
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ISBN:
(纸本)0819403954
The Shack-Hartmann (S-N) wavefront sensor, which is derived from the classical Hartmann testing method, is one of the most convenient methods available for the optimal testing of telescopes on site on natural stars. It also has many applications in adaptive optics, active optics and CAM of optical mirror. The principle of the method is explained. Light from the tested source and from a reference source is collimated by a lens and incides upon an S-H plate which is a lens array. Each lenslet forms two point images. The distance between each pair of images reflects the angular aberration of the tested wavefront over the subaperture. A method of producing S-N plates with GRIN rod lenses is described. The experimental S-H plate has 10x10 GRIN rod lenses.
An opticallens system with varying magnification has been designed for a 70-mm image format. Twenty optical elements were needed to provide for the 345- to 1050-mm focal length zoom range as well as the proper color ...
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An opticallens system with varying magnification has been designed for a 70-mm image format. Twenty optical elements were needed to provide for the 345- to 1050-mm focal length zoom range as well as the proper color correction over the visible spectrum. A 4-in diameter port window limits the fl# of the opticallens system. Operation of the lens system is done by actuating stepping motors through a MacPlus computer. This lens system was designed for Los Alamos National Laboratory Group M-8, because no commercial zoom lens existed that would change its reduction from 1/15 to 1/4 at a focusing range of 5 meters. Additionally, we required a larger, non-standard image size that could be recorded by a rotating mirror streak camera. A Nikkor lens sales manual does offer a long focal length, 35-mm lens only upon special order. The closest focusing range of this Nikkor lens is 6 meters.
The Proceedings of the Conference contains 27 papers representing the very latest developments in the optical and opticalengineering subject areas not covered in the other conferences at the annual San Diego meeting....
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The Proceedings of the Conference contains 27 papers representing the very latest developments in the optical and opticalengineering subject areas not covered in the other conferences at the annual San Diego meeting. This Proceedings includes papers on basic opticaldesign and engineering, e.g. the optomechanical laboratory hardware, its organization, terminology and devices;a precision dual positioning system;a Wollaston polarizer in imaging systems;a 20-element long focal length zoom lens;photolithographic lenses;a reflection microcirculation microscope. The session on optical fabrication and testing includes papers on computer simulation of interferometer performance;adaptive optics wavefront corrector using addressable liquid crystal retarders;microlens array manufacture;design of Shack-Hartmann plate with GRIN rod lenses;Chinese adaptive astronomical telescope. The session on waveguide and diffractive optics and microlithography comprises papers on the fabrication of ion-exchanged glass channel waveguides with etched and diffused grating taps;modular fiber optic assembly technique;forward photorefractive multibeam mixing in BaTiO3;correcting chromatic aberration in holographic optical systems. Miscellaneous topics include articles on optomechanical properties of PMMA and their applications in pressure sensors and on a Fabry-Perot tunable filter for visible and near IR using nematic liquid crystals.
The chronological events associated with fabricating a lens system from initial design to final component manufacturing will be explored. The benefits of utilizing computer integration in design, process planning and ...
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ISBN:
(纸本)0819402044
The chronological events associated with fabricating a lens system from initial design to final component manufacturing will be explored. The benefits of utilizing computer integration in design, process planning and manufacturing will be highlighted.
We have set up Oplical lens Data Base on VAX-8600 computer, compiled base management software and query software, filled up the data of typical lens over one thousand and optical material over one thousand kinds,and s...
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The major problems faced in spaceborne multielement optical systems used for high resolution imagery and remote sensing applications are the stability of optical and mechanical configurations under Shock, Vibration an...
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This work explores an approach to the search for optimum solution in the multidimensional design space of a lensdesign through a survey of the system merit function by a systematic variation of relevant design parame...
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In mis paper a new type of optical imaging system-Opticat Compound Eye lens is desciibed. According to apposition eye pattern of the insect compound eye. the general design formula of optical Compound Lye lens are giv...
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