Chinese Version Light学术出版中心
Latest Issue
Issue 2 ， 1991
-
Parameter Design of Optical Lens Mechanism
Abstract：This paper descrlbes CAD parameter design for Gauss photo-objective and micro-objective by means of I-deas graphic software on VAX-Ⅱ system. It introduces all the processes of forming mechanical structure, and presents a method that solves the equal-angular stop parameters analytically.- 28
- |
- 8
- |
- 0
Published：2020-08-12 -
Investigation on Extreme Ultraviolet BRV Discharge Source
Abstract：A BRV intense vacuum spark source has been designed. It offers several advantages, high intensity, extended and smooth continuum, a good viability. It is capable of producing a smooth continuum spectrum from the visible down to at least 4nm. Its reproducibility and stability is found to be better than 15%. It is best suited to use in the general laboratories which do not require the specific properties of the synchrotron radiation. It has widespread practical value in the field of research and technology of VUV spectroscopy, soft X ray microscopy and photoetching etc. The paper mainly describes the operation principle, the design thought and the specific structure of the source. The time-resolved spectra of the BRV plasma source has been studied at different wavelength in a range of 50-300 nm. The temporal response of optical pulse radiation on the order of millimicrosecond has been probed. We determined relative spectral distribution characteristic of the source. It is discussed that the influence of several outer discharge parameter on the spectral characterlstic and the discharge stability. By adding a cap made of teflon on top of the anode, the reproducibility and radiance have been improved further.- 27
- |
- 4
- |
- 0
Published：2020-08-12 -
The Design and Experiment Studies of a Computer-based Testing System for Camera Shutter
Abstract：In this paper, the design and experiment studies of a new type of camera shutter tester are described based on the Apple-Ⅱ microcomputer. The data for full exposure course of camera shutter from opening to closing are sampled with high speed data acquisition and storage circuits. After data processing, exposured curves of camera shutter or flash lamp are shown on screen of the Apple-Ⅱ computer. Designs of hardware and software for the system are introduced in detail and experiment results are given In the paper.- 27
- |
- 6
- |
- 0
Published：2020-08-12 -
A Study of the Transverse Image Displacement in Zoom System
Abstract：In this paper,it's analysed and expounded the reason of the transverse image displacement in zoom system systematically,contrasted the effect on transverse image displacement of different contruction type and multiplying power of different cam-curve selection in zoom,system,provided the objective basis to track and surrey the premilinary type selection in zoom system design,put forward a effective method to rectify the transverse image displacement in zoom system applying in practical engineering,and produced a way to make the center error tolerance of component according to the transverse image displacement tolerance.- 45
- |
- 8
- |
- 0
Published：2020-08-12 -
High Accuracy Edge Detection
Abstract：This paper analyzes the principle of improving intrinsical resolution of CCD camera and presents a method of realizing software. The influence of parameters of the system on the measuring accuracy is descried as well.- 49
- |
- 7
- |
- 0
Published：2020-08-12 -
The Background Counteraction of the Video Signals by Simulation
Abstract：In TV tracking measurement, the extracting of the object's signal is very important. In this paper, two kinds of methods for the background counteraction of video signals are introduced with the final test results. The collected object signals supply two kinds of parameters of objects-width and light parameters. These are the basis of the TV real-time tracking.- 49
- |
- 6
- |
- 0
Published：2020-08-12 -
Measurement and Analysis of Dynamic Even Load of Planetary Gearing and Frequency Analysis of the Error Source
Abstract：The main causes of uneven loading in planetary gearing are the tolerances of components in processing and assembly. The affect of each error is different to the even loading. This paper represents that the measurement can be accomplished by the method of measuring and comparing the values of the bending deformation on each shafts of planet gears to obtain dynamic even load condition in planetary gearing, and the affect levels of all kind errors are found for the even loading of planetary gearing, from the frequency analysis of the dynamic load fluctuation curves. This analysis is helpful for designing and manfacturing the planetary gearing.- 56
- |
- 6
- |
- 0
Published：2020-08-12 -
Computer Aided Design of the Harmonic Drive Using Symmetric Disc Wavegenerator
Abstract：Meshing analysis theory of the loaded harmonic drive using symmetric disc wavegenerator was studied in this paper, and a CAD software package is developed. The software not only can analyse the meshing performance, select the meshing and constructive parameters, but also can realize the engineer drawing of the harmonic drive automaticly. Moreover the database, the spare parts pattern and the engineering symbol library is built up.- 44
- |
- 4
- |
- 0
Published：2020-08-12 -
A Computer-aided Design of the Contrate Harmonic Gear Drive
Abstract：This paper presents the meshing analysis theory and stress analysis method of the contrate harmonic gear drive, and introduces the DMCAD sofeware, by wich it also analyzes the meshing performance and the stress state of the drive with some conclusions.- 37
- |
- 8
- |
- 0
Published：2020-08-12 -
The Theory and Preliminary Experemental Researching of Wide Band Ti3+:Sapphire Laser
Abstract：In this paper, the spectrum characteristics of Ti3+: Sapphire crystal are expounded in detail, theoritically; and the conditions for realizing the laser operation of Ti3+: Sapphire laser are studide thoroughly, too. Meanwhile, the numerical value optimum scheme of the cavity structure design of astigmatically compensated, Z-model cavity is put forward. In addition, the theoritical analyses are done for the mmutual relations between the threshold pump power and cavity structure or cavity loss, in which the CW laser operation is realized for Ti3+: Sapphire laser. By experimental researching, under room temperature condition, the wide band laser operation of Ti3+: Sapphire laser of the two-reflector cavity is achieved, by Q-switch SHG YAG laser longituditally pumping. The output wavelength is in the near IR scope. Meanwhile, the qualitative studies are done for the phenomenon that the laser operation is inflenced by the pulse energy, pulse breadth, beam radius, polarized characteristies of the pump light. Also, the same studies are done for the phenomenon that the reflector film is damaged by the pump light.- 38
- |
- 10
- |
- 0
Published：2020-08-12 -
Development of 10.6μm High Power Laser Mirror
Abstract：This paper systematically describes the development of 10.6μm high power laser mirror, consisting of designing metal-dielectric coatings, selecting materials, the technique of preparation and measurement. A poly-fluoride（BaF2, SrF2, CeF3）low-index coating material of fine performance has been studied, and the crytal structure of the thin films prepared by using the new coating material has been analyzed. Three kinds of high power laser mirrors have been prepared, including protected silver coating R=99.0%; enhanced silver coating R=99.3%; super enhanced silver coating R=99.5%. The refectivity is measured with the instrument designed by ourself.- 47
- |
- 8
- |
- 0
Published：2020-08-12 -
Preparation of Thin Films Quarterwave Plate Used in High Power CO2 Laser and Preliminary Study of Thin Films Retardation
Abstract：Quarterwave plate as a light beam average component,is a key component in high power CO2 laser processing mechine.At oblique incidence the multilayer reflectors,including internal and external reflections,have different phase shifts for the two planes of polarlzation.Therefore the design of reflators with specific phase shift have been carried out by computer optimization.The purpose of this paper is to design coating with the relative difference of phase shifts of 90° at 10.6μm.The reflectors with the phase difference of 90°will act as a quarterwave plate.Some advantages over bulk quarterwave plates are that they may be used for any wavelength,may have higher precision of phase shift difference and large apertures.The two design methods,experimental techniques,results and errors analysis are presented.- 29
- |
- 4
- |
- 0
Published：2020-08-12 -
Resarch of Soft X-ray Multilayer Mirror
Abstract：The paper describes the progress and the applied prospects of soft X-ray multilayer mirror.The period and nonperiod multilayer System are designed.In the wavelength 171Å 21 layersperiod and 17 layers nonperiod Mo/Si mirrors are fabricated by DC MCS technique.In the wavelength 256Å 21 layers period Mo/Si mirror is also fabricated by EBV technique.X-ray little angle diffraction experiment,AES analysis and reflectivity measurement are done to samples.Discussion of measurement results is given.- 33
- |
- 8
- |
- 0
Published：2020-08-12 -
A Study on the Measurement Method for Elliptical Polarization Parameters of 90°Thin Film Phase Retarder at 10.6μm
Abstract：On the basic principle of rotating-analyzer ellipsometer,an improved measuring method is presented in this paper by analyzing the main facts which affect the measurement accuracy of elliptic polarization parameters Ψ and Δ.The method to increase the measurement accuracy of Ψ and Δ are given in theory,and some valable conclusions are given.- 33
- |
- 7
- |
- 0
Published：2020-08-12 -
A Study of NEC μPD7811/7810 Single Chip Computer and it's Development System
Abstract：This paper describes the performances and applications of NEC μPD7811/7810 single chip computer.It specifically describes the design philosophy of the hardware and software of the development system for μPD7811/7810 single chip computer,and discusses the functions and concretly accomplishment plan for the development system.- 32
- |
- 6
- |
- 0
Published：2020-08-12 -
Computer Measuring System and Spectrum Analysis of Mechanical Transmission System in Laser Cutting Machine of Optical Disk for Serve Grooves and Performed Information
Abstract：In this paper,the designing,working principle and error of the photoelectricity measuring system of cutting machine are described. The special computer interface board and practical computer software programs are designed.The theoretical analysis of transmission system of machine and the spectrum analysis of error curve are given.- 40
- |
- 7
- |
- 0
Published：2020-08-12 -
Study and Design of Control System of Laser Cutting Machine of Optical Disk for Servo Grooves and Preformed Information
Abstract：This paper describes several precision control systems of laser cutting machine of optical disk for servo grooves and preformed information.They are the spindle servo,the microfeed carriage drive, the focus servo and the laser control.The paper also describes how to record preformed information on optical disk.It is obtained that the stability of angular velocity of spindle up to 5×10-6 and the accuracy of track pitch is 1.6μm±0.03μm.- 40
- |
- 6
- |
- 0
Published：2020-08-12 -
The Study of Image Segmentation Using the Princilpe of Moment Invariants
Abstract：This paper uses the method of moment invariants in the television tracking and measuring system to process the television image. It applys the principle of moment invariants to the television image to complete real-time binary image.On the basis of exeriment of computer simulation,a real-time system of image segmentation is designed.- 36
- |
- 6
- |
- 0
Published：2020-08-12 -
Computer Aided Parameter Design of Standard and Common Spares Used for Optical Instrument
Abstract：In this paper the parametric design for standard and common spares used for optical instrument are stated based on the software S7k imported from US. The user's application programs for 14 standard spares and 4 common spares are Complied.The parametric design dealing with some of standard and common spares has been completed.The secondary development for S7k is carrted out.The paper is a primany attempt for further development of Computer aided graphics.- 28
- |
- 6
- |
- 0
Published：2020-08-12 -
The Design of the Fully Digital Servo-system in MCS-98 Single-chip Processor
Abstract：The digital correction and related problems about the fully digital PWM Servo-control system are analysed in the paper.A new method with a 16-bit single-chip processor is proposed.The lowspeed stability of the digital system is analysed and a series of measures are proposed.The perfect design method of digital PWM system and the test results of performance are given in detail.- 38
- |
- 7
- |
- 0
Published：2020-08-12 -
A Technical Study of the Automation Demarcation and Correction and the Day Light Steller Measurement for Electro-optical Tracking Systems
Abstract：In order to improve the measuring precision of the measuringboat,the key technology for antomation demarcation and day light steller measurement must be solved.This paper draws some rather importhat conclusions about the the oritical exploratory and the actual experiment having been done.It also put forward the technical plan for the star trackers of the third boat.This paper makes a thorough analysis of the probing ability,measuring precision and collecting signal as well.It will indicate the direction for the futher development.- 31
- |
- 8
- |
- 0
Published：2020-08-12 -
Dynamic Character FEM Calculation and Analysis for Servo System
Abstract：In this paper the method of improving the dynamic character of servo system for accurate positioning of the excutive mechanism is described.Using precision rotary pedestal with 3 axes as an example, both dynamical behauiovr of mechanical structure and frequency character of servo system are discussed simultaneously based on integrated mechanics and electric,by means of FEM,modal analysis and modal synthesis,and the unified mathematical model is founded.On the basis of solution.the sensitive factors to affect the stabilization of servo system are provided.The method of improving stabilization and the optimum design can be carried out.- 24
- |
- 4
- |
- 0
Published：2020-08-12 -
The Real Time Measurement and Study on Ruling Error of Grating Engine
Abstract：In this paper,a new method to measure the ruling errors of grating engine is given,it's theory and realizing process are shown.The ruling accuracy of the engine is given by this method.According to Stroke,we analysis the effect of the ruling errors to diffraction pattern.It is proved the calculated result is coincident with the actual pattern.On the basis of the result,we adjust the engine accurately.- 35
- |
- 6
- |
- 0
Published：2020-08-12 -
A Study of Loaded Walking Machine with Connecting Rod
Abstract：In this paper,a new walking mechanism is provided.The motion of the walking mechanism and the forces on it is discussed.A prototype of walking mechine has been manufactured.The principle of the mechanism has been verified and a new method of drawing atlas of coupler paths of 4-bar linkage is provided.- 31
- |
- 6
- |
- 0
Published：2020-08-12 -
The Data-base and Target Identification for Radar and Infrared Warning System
Abstract：This paper introduces the principle of Radar and the parameters of Radar and infrared warning system.According to these parameters,three features of flying target are abstracted.On this basement, the data-base structure of target features of Radar and infrared warning system is designed,and the algothm of target identification of Radar warning system is designed as well.Finally,it gives the experimental results,as well as the way to improve the system.- 32
- |
- 6
- |
- 0
Published：2020-08-12 -
The Computer System Study and Design for Cutting Machine of Optical Disk Servo Groove
Abstract：This paper,according to some advanced computer control theory and computer control techniques,discusses the basic ideas on designing the computer system and the way on designing the software and hardware. According to the practical engineering problem,it analyzes the reasons of breakdown and the deviation and the way for improving has been suggested.It provides the method of the high precise system's examing and measuring by computer.- 21
- |
- 6
- |
- 0
Published：2020-08-12 -
The Quantitative Measurement of the Two Dimensional Intensity Distribution of Star Image
Abstract：In this paper,a method is given to measure the two dimensional light intensity distribution of star image of the microscope objective. In includes the experiment principle,the computation of two dimensional FFT with conventional computer,data fitting and software design.In discusses how to select value of measuring azimuth as well as sampling interval of two dimensional FFT.- 13
- |
- 4
- |
- 0
Published：2020-08-12 -
Measurement of Supercalendered Aspherical Surface
Abstract：This paper,a method is discussed in which the surface topography of in aspherical surface can be measured by intergating slope values of this kind of aspherical surface according to the laser antocollimation principle.Meanwhile,a kind of surveying system is designed,and the analyses is done about the system error.At last the testing data are processed and analysed in the paper,and the feasibility experiment is done.- 28
- |
- 10
- |
- 0
Published：2020-08-12 -
Application of Spectrum Photosensitive Instrument Using 8098-Single-Chip Microcomputer
Abstract：This paper presents primary control unit techniques with 8098-sing le-chip microcomputer in electric control system of speltrum photosensitive instrument.This system synchronously controls several stepmotors and a shutter of camera and realizes high accuracy 14-bit A/D convertor and keyboard display.- 26
- |
- 5
- |
- 0
Published：2020-08-12
Loading...
0