Chinese Version Light学术出版中心
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Issue 5 ， 1986
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Aberration Tolerances Based on the Line Spread Function
Abstract：This paper disccuses the general formulae and normalisation factor of line spread function and the edge. An appsoximation equation specified by Ω, which is a function of the wavefront variation,of the Strehl ratio of the LSF, is given. The relationship between wavefront coefficients and Ω which is divided info even part ΩE and odd part Ω0 for the symmetrical aperture and for rotational symmetrical optical system, especielly for circular aperture, is investigated. Then use of ΩE to determine the best focal plane and Ω0 to get the position of the maximum value of LSF is described. Finally some examples about the aberration tolerances in some cases are showen.- 43
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Published：2020-08-12 -
Dynamical Real-Time Monitor System for Twist Angle
Abstract：This paper mainly discusses a real-time monitor system for metering the twist angle between foundations of deferent heights. It has been shown by error analysis and calculation that the system has higher accuracy than usual, it is available technologically and easy to use,therefore,it will be of special values in engineering practice.- 48
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Published：2020-08-12 -
Implement of Digital Correction Using Microcomputer
Abstract：This paper describes an implement of digital correction for the tracking system by using DJS—040 microcomputer and related problems. Linear and nonlinear correction algorithms can be automaticolly chosen according to the error so that the dynamic performance of the tracking system has greatly improved.- 33
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Published：2020-08-12 -
Single Board Computer Control for a High Precision Servo Table
Abstract：This paper describes the design method of Single Board Computer Control System for a High precision servo table. The tested results of performence of the table are given.- 33
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Published：2020-08-12 -
The Fisheye Lens for Spherical Screen Motion-Picture
Abstract：This paper discusses the principle of spherical screen motion-picture and the design method of fisheye lenses for photograph and projection of it. The characteristics of the structure and the aberrations of the fisheye lens are described and two examples of The fisheye lenses are given respectively.- 28
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Published：2020-08-12 -
The Finite Element Analysis of Temperature Distribution Within a Large Size Optical Glass During the Annealing
Abstract：Up to now quantitative description of the temperature distribution within glass being annealed is very rough and superficial, so that many significant phe nomina can’t be forecasted by it. The application of the finite element solution of heat transfer problems to the determination of the temperature distibution within axisymmetric glass being annealed where the temperature change is slowly has been suggested for the fist time in this paper, and corresponding microcomputer programs is designed to put into effect. In eddition, this paper also describes how to determine the nacessary time to make the glass maitained at the annealing temerature Tg with a microcomputer.- 27
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Published：2020-08-12 -
Applications of CAD in Optical Machine Design
Abstract：In this paper the applications cf CAD in optical machine design are described through two examples. The advantages and spectacle of applying CAD in optical machine design are generally showed by several figures.- 36
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Published：2020-08-12
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