Chinese Version Light学术出版中心
Latest Issue
Issue 1 ， 1990
-
The Structure and properties of the Multi-Niobosilicate Glasses and Their Melts
Abstract：In this pager the structure and properties of the glasses and their melts in Nb2O5—SiO2—BaO—K2O system have been descussed based on the experimental results of hlgh-temperature FT-IR-EMs,high temperature polarizing microscopic analysis, IR spectra,Ramanspectra,RDF(r) and DTA-TG,etc.- 25
- |
- 7
- |
- 0
Published：2020-08-12 -
A Design of the High-power Plano-field Microscope Objectives
Abstract：This paper describes a method of designing microscope obje-ctives and gives a practical structure of a plano-field apochromatic microscope objective,followed by an evaluation of the design.- 51
- |
- 8
- |
- 0
Published：2020-08-12 -
An Optical Design of the Flat-field Spectrometer Using a Holographic Cancave Grating and a Study of the Aberration Optimization
Abstract：In this paper a method of designing flat-field spectrometer is proposed which uses a holographic concave grating and its aber-ration theory.The calculating formulae of spot diagrams are der-ived for the purpose of eveluating their performance on the ima-ging surface.The optical parameters of the holographic cancave grating are optimized and also a software is established for the design.- 56
- |
- 5
- |
- 0
Published：2020-08-12 -
The Measurement of the OTF and SQF of the Photographic Lenses
Abstract：We measured the OTF of a photographic lens by digital Fourier Transform,using a CCD to scan the slit image in the focal plane of the collimator in front of the measured lens.The Fourier Transform of the sampled data of the image,after input into the computer through a A/D converter,gave the OTF value. We measured the SQF of the lens using CCD to sample the logarithmic grating image fozmed by the measured lens and obta-ined the SQF from the integration of the system OTF expressed in polar coordinate and logrithmic frequency coordinate.- 43
- |
- 13
- |
- 0
Published：2020-08-12 -
OTF Measurement of a Microscope Objective
Abstract：This paper introduces the principle of measuring the OTF of the microscope,objective,including the device of the electrical circuit,the software and the instrument performence and the testing results as well.- 70
- |
- 6
- |
- 0
Published：2020-08-12 -
A Study of a 10.6um Laser Facula Tracing System
Abstract：The laser facula tracing system described in this paper invol-ves an installation emitting 10.6μm wavelength pulse laser,a mat-ched photoelectrical receiving and transforming device and an info-rmation treatment device to receive the returned pulse,control the laser beam and make its peak power aim at the traced target.The paper also presents the detailed analysis and calculation of the atmosphere transmission,optical system,laser detection information treatment,optomechanical scanning and laser deflection and so on.- 38
- |
- 6
- |
- 0
Published：2020-08-12 -
A Study of the Effect of the Acoustooptical Modulator on Pulse Duration in the Cavity Dumping and Pulse Duration Pressing
Abstract：In this paper the principles of the cavity dumping technology and the acoustooptical interaction have been described followed by a detailed theoretical analysis and calculations of the macha-nism of the chirp caused by the optical pulse through cavity du-mping.The scheme of improving the output pulse parameter of cavity dumping has been presented and demonstrated experimently. It is the first time domestically to compress the output pules durat-ion of the cavity dumping from 25 ps to 5 ps.- 39
- |
- 4
- |
- 0
Published：2020-08-12 -
A Computer-aided Design of the Harmonic Gear Drive with Three-wave Wavegenerator
Abstract：This paper describes the meshing analysis theory and a design calculation method of the harmonic gear drlve,introducing a CAD software and analyzing the meshing performances.- 41
- |
- 9
- |
- 0
Published：2020-08-12 -
A Computer-aided Study on Kinematics of Six-leg Walking Vehicle
Abstract：This paper introduces the softwares developed for computer aided study on kinematics of the six-leg walking vehicle to meet the needs for the walking vehicle computer simulation.It can be used to analyze kinematics of six-leg walking vehicle and walk-ing mechanism.After the kinematics analysis the picture display block can be used to realize the simulative walking display on the rough terrain.The display block is developed with 80286-macro-assembly and can be interfaced with FORTRAN to realize graphic functions.It is conveniently used to mechanism display and other purposes.- 31
- |
- 6
- |
- 0
Published：2020-08-12 -
A Study of the Processing Law and Mechanism of the Plastic Deformation in the Cu-Zn Alloy and 20CrMnTi Steel Under the Moderate Temperature
Abstract：The effects of the dynamic strain ageing(DSA)and dynamic annealing(DA)on the mechanical properties of a H68 brass and 20CrMnTi steel were investigated by the experiment in which the temperature were between 300k and 1100k with 10μm grain size and strain rates between 1.1×10-2/s and 1.1×10-4/s.The results have shown that uniform elongation and work hardening parameters of H68 have a peak value in a temperature region, while that of 20CrMnTi have peak values both in high and low temperature regions respectively,Another result is that DSA and DA phenomena can be found simultaneously if it is close to the critical temperature.Therefore it is suggested that the influnces of these two phenomena should be considered when the processing is carried out at the intermediate temperature.- 35
- |
- 6
- |
- 0
Published：2020-08-12 -
The Design of a Dynamic Simulated Target for TV Tracking and Measuring System
Abstract：A method is described in this paper which uses a moving target to check the dynamic measuring accuracy,tracking and guiding performances of the TV tracking system of the cinetheo-dolite.The old target is improved to truly imitate different states of an actual tracked object.- 20
- |
- 5
- |
- 0
Published：2020-08-12 -
ISAR and Its Processing Technique
Abstract：According to the Range-doppler imaging principle,optocal compensation of motion error for several typical motion from has been discussed.The scheme of perfect optical processing system has been given and its effet has been demonstrated experimently. In addition,the scheme of real-time processing has been presented.- 35
- |
- 5
- |
- 0
Published：2020-08-12 -
A CAD on the Pulldown Film Mechanism with a Crank Swing Block of the Intermittent High Speed Cine-camera
Abstract：In this paper the mathematical model of the kinematic char-acteristies and dynamic characteristics have been set up by ana-lyzing the pulldown film mechanism with cank swing block of the intermittent high speed cine-camera.According to this model a kind of the convenient and fast CAD softwares is proposed.It also indicates that the acceleration is the main factor determining the force of the pulldown mechanism.The optimal design for the basic elements of this mechanism has been realized by using a IBM PC/XT microcomputer.- 21
- |
- 4
- |
- 0
Published：2020-08-12 -
A Nonlear Adaptive Filter Based on Local Statistics and Its Performance Evaluation
Abstract：In this paper the techniques for real-time processing used so far are introduced and discussed.Also discussed are the methods and implementation for enhancement and noise filtering.A nonlinear adaptive filter based on local statistics and the improved R.T. China’s method of evaluation are proposed and the experimental results are evaluated.- 49
- |
- 4
- |
- 0
Published：2020-08-12 -
A Study on a Camera Synchro-control System
Abstract：In this paper a fully digital camera synchro-control system is descrlbed.All the control functions are implemented by a slngle-chip microcomputer.It also presents the effective control means,experimental results and conclusions.- 58
- |
- 7
- |
- 0
Published：2020-08-12 -
Application of the Identification Technique in a Theodolite Control System
Abstract：This paper describes an identification system with a MCS-51 slngle-chlp computer.It can collect the data,transmit them into a IBM-PC computer by the communication interface and identify the mathematical model of the unknown system using correlation analysls-least square method.It is very practical for improving the system precision of the mathematical model as well as the control precision.This paper also gives the design method of the digital speed adjustment system and discusses the direct design methods in Z plane.- 39
- |
- 6
- |
- 0
Published：2020-08-12 -
Real-time Optoelectronic Processing Technology for Spaceborne Synthetic Aperture Radar(SAR)Data
Abstract：Recent advances in light sources,spatial light modulators (SLM)and detectors have made it possible to implement real-time optical signal processors that are relatively compact with low power reqirements and cost.In this paper a reai-tlme optoelec-ironic processor for SAR is described with the emphasis on the fundamental principle of the imaging and the processor,followed by some problems in the processor.- 57
- |
- 6
- |
- 0
Published：2020-08-12 -
A Low-illuminance Image Storage and Computer-based Processing System
Abstract：This paper describes a low-illuminance image storage,real-time display and computer processing,system applied to a photoeleetronic imaging with a laser exeited faint fluorescence.It can store and display image of object not only under normal eonditions,but also under low-illuminance by means of digital accumulating technology. The image is automatically processed with a computer to get use-ful information.- 39
- |
- 7
- |
- 0
Published：2020-08-12 -
A Electronic Processing System for High-precision Goniometer
Abstract：This paper introduces a electronic processing method for high-precision goniometer.This goniometer,which is made of four scanning heads and five 8031-single-chip microcomputers,can process signals from the four heads.It’s capable of collecting data,8192-portion dividing(corresponding to the resolution of 1/8192 of the grating pitch),combining accurate codes with the coast codes and displaying.The errors of the measured angle, due to the axle awaying and eccentric of the grating disc,is eli-minated by the summation of the digital signals from the four scanning heads.It is convenient for mechanical mounting and adjusting.The resolution of the goniometer is higher than 0.01 arc second.- 40
- |
- 6
- |
- 0
Published：2020-08-12 -
The Coordinate Transformation and Data Communication Via 16-bit Single-chip Microcomputer
Abstract：The optical target simulates the indoor on-site working state of the cinetheodolite and the relationship of their moving traces between the target and the cinetheodolite is determined by the formulas of the coordinate transformation.This paper presents a method to realize the transformation via MCS-8098 and simulate the transmission structure used at on-site work,so that the trac-king of the cinetheodolite to the target can be completed under the computer guiding.- 33
- |
- 6
- |
- 0
Published：2020-08-12 -
A Study of CCD as a Detector Used in Laser Tracking System
Abstract：This paper discusses the principle of the charge-coupled-de-vice(CCD)laser tracking system,analyzes the detected distance and the angle accuracy of the system.It also compares the CCD system with the quadrant device(QD)system and describes the electronic shutter technology and the enhanced-lmage technology used in the CCD laser tracking system with fanally a conclusion that the CCD system is superior to the QD system.- 30
- |
- 7
- |
- 0
Published：2020-08-12 -
A High-accurate Dynamic Angle Measuring System Using CCD as a Detector
Abstract：This paper deserihes the design of a high-accurate dynamic angle measuring system using CCD as a detector,including the principle of the operation,structure and the error analysis.- 57
- |
- 7
- |
- 0
Published：2020-08-12 -
A Dynamic CAD for the Drive Devices
Abstract：This paper describes a design of the Turbon CAD software DRVCHAIN,operated on IBM PC/XT computer,for drive devi-ces.The software realizes a series of processes from drawing up the transmission chains to the system analysis as well as the pro-perty amending,etc.Also a man-machlne dialogue enviroment… Window Style Enviroment(WSE)was developed using multi-wi-ndow management,pop-up menu technique and information mana-gement.- 30
- |
- 4
- |
- 0
Published：2020-08-12 -
The Zn-to-S-atomic Ratio Measurement in the ZnS Optical Film Using Direct Emission Spectrum of a Movable Electrode
Abstract：The S-atomic emission principle in ZnS optical film is discus-sed in this paper followed by introducing the measurement of the Zn-to-S-atomic ratio of the film using direct emission spectrum of a movable electrode,including the optimum measuring conditions, standard solution concentration,standard solution absorption and the moving times of the electrode,and so on.The measured re-sults are fundamentally identical compared with the experiment of the atomic absorption.- 33
- |
- 6
- |
- 0
Published：2020-08-12 -
The Design and Realization of a Thesis Database in COD
Abstract：This paper describes the design and realization of a thesis database in COD,including the structure of the database and a applied system…TRS developed with a microcomputer DBMS…C-d BASEⅢ.The main functions and chareeteristies of the TRS are introduced followed by the analysis and evaluation.- 34
- |
- 6
- |
- 0
Published：2020-08-12
Loading...
0