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Issue 5 ， 1997
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90's Progress of the Electrical Control and lnformation Processing in the Changchun lnstitute of Optics & Fine Mechanics(CIOM)
Abstract：The 90's progress of the electrical control, information processing and computer technology in the CIOM is reviewed in this paper, an important role in the performace optimization of the modern optical instrument and equipment by CIOM manufacture is pointed out.Keywords：Automatic control;lnformation processing;Computer- 37
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Published：2020-08-12 -
Mathods Preventing Stray Light Emergenced in Cassegrain Systems
Abstract：Stray lgiht emergened in Cassegrain systems is analysised and several mathods preventing stray light are presented.Keywords：Stray light;Cassegrain systems- 36
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Published：2020-08-12 -
Research of Analysis Method for Stress of Discrete Deformable Thin Mirror
Abstract：In this paper,stress distribution formulas of deformable thin mirror are gotten.By using these formulas、simplified formulas and Finite Element Method(FEM),thestresses of two types of deformable mirrors(61-actuator and 37/55-actuator)are calculated,the results are compared and analyzed.Keywords：Deformable mirror;Stress analysis;Finite Element Mthod(FEM)- 41
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Published：2020-08-12 -
The Characteristic Properties Analysis for Multispectral Data Compression Based on Karhunen-Leove Transformation
Abstract：In this paper a compression method for multispectral image data basedon Karhunen-Leove Transformation (KLT) was presented, and the statistical properties of multispectral image using KLT was analyzed. After deducing the theoryof KLT, we discussed the schemes of applying this method to the practical compression system of multispectral image data. A maxium degree decreasing bit flow method is researched and presented. Experiment results shows that this methodcan obtain the compression ratio 3.2～5.3 for sixteen band multispectral, almostlossless. It is superior to the method of applying DCT to remove the spectral correlation .Keywords：KLT;Multispectral image;covariance matrix;Eigen vectors;Data compression.- 64
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Published：2020-08-12 -
Numerical Simulation and Analysis on Three dimensional Reconstruction of Laser Plasma
Abstract：A CT technique applied to ICF has been developed and a three-dimensional (3D) iamge reconstruction program(CT3D) programed in this paper.The program CT3D is numerically studied the 3D reconstructed images of target's plasma by using a multiplicate algebraic reconstruction technique(MART) and algebraic reconstruction technique(ART) from five pinhole camera images obatined along different sight directions on ‘Xingguang Ⅱ'device,so that 3D images of X-ray emitted by laser plasma are obtained.The simulated results showes that athe MART's reconstructive accurance is better than ART's and MART can meet the requirement that diagnostication error δI/I is lower than 10%.Keywords：CT technique;Three-dimensional imaging;Inertial confinement fusion(ICF);Laser plasma- 34
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Published：2020-08-12 -
Forming Merhod and Machining Dimension Determination of Profiles of Precision Journal Bearing
Abstract：The forming method of profiles of precision multilobe journal bearing is described.Mathematic formulas of calculating geometry dimensions of profiles are established,and theory calculating method on machining dimension of bearing arc profiles is described in detail.Keywords：Precison bearing system;Arc profiles;Geometry dimension;Machining dimension;Theory calculating method- 55
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Published：2020-08-12 -
Study on Outstanding Phenomenon in Precision Turning with PCD Cutting Tool
Abstract：In precision turning with PCD cutting tool,present work finds such an outstanding phenomenon that the surface roughness of the workpieces is lower than that of the cutters used to machine,which is contrary to the traditional cutting theory.In this paper,the principle of this phenomenon is studied and the definition of double overlapping locations is given.This is of great significance for the application of PCD cutting tool.Keywords：Outstanding;surface roughness;Double overlapping locations- 40
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Published：2020-08-12 -
A New Progress on Tracking Precision of Gear-driving Theodolite
Abstract：This paper introduces a system which can solve the special problem of gear-driving system,and it makes the tracking precision of theodolite using gear drive come up to the level of that using moment motor drive.This system was used in a theodolite remaking task successfully.Keywords：Gear-driving;Tracking precision;theodolite- 40
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Published：2020-08-12 -
Study on lon Beam Etching Fabrication for SiO2 Microlens Array
Abstract：Using scanning electron microscopy (SEM) and surface style measurement.We have investigated the surface microstructure and morphology of the rectangular arch quartz microlens array fabricated by Ar ion beam etching. The reason induced the surface defect of quartz microlens has been discussed. The methods improving surface microstructure and morphology have been analyzed,The surface morphology differences of the microlens devices fabricated by ion beam etching under the different conditions have been given.In addition,we also introduce several key operations to the quartz samples prepared. The process for preparing quartz microlens has been discussed.Keywords：ion beam etching;SiO2 microlens array;Morphology analysis- 52
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Published：2020-08-12 -
Preliminary Study of Superpolishing Sapphire Single Crystal Using Tin Lap
Abstract：This paper is summary about the significance of polishing single crystal α-Al2O3,introduces the machine and the experiment process of polishing single crystal α-Al2O3 using tin lap,the influence of polishing time and pH value of polishing liquid to the surface roughness of workpieces,After polishing,the surface roughness is better than 0.4 nm rms.Keywords：α-Al2O3 single crystal;Tin lap;polishing- 43
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Published：2020-08-12 -
Identification of Induction Motor Speed Using Neural Networks
Abstract：A newly developed approach to identify the mechanical speed of an induction motor based on neural network technique is described.The back-propagation neural network technique is used to provide a real time adaptive estimation of the motor speed.The error between the desired state varible and the actural one is back-propagated to adjust the rotor speed.So that the actural state varible will coincide with the desired one.The theoretical analysis as well as the simulation results to verify the effectiveness of the new method are described in this paper.Keywords：neural network;Induction motor;Speed indentification- 46
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Published：2020-08-12 -
Optical Power Output Adjustment Using Laser Diode Pulse Modulation
Abstract：The Paper describes pulse modulation of lasor diode and application in A3 Laser Printers, optical power output adjustment when Using APC and cooling system of the laser diode by a peltier module.Keywords：LD pulse modulation;APC;Cooling of peltier- 42
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Published：2020-08-12 -
Mounting Membrane Combined IC with Reflow Soldering Technology
Abstract：In this paper,it principally presents the technological course of mounting membrane combined IC(Integrated Circuit) using reflow soldering technology,as well as the problem appearing in the soldering and the solving-method.Keywords：Reflow technology;Membrane combined integrated circuit- 28
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Published：2020-08-12 -
Program Design about Controlling Net Processing of Car's Engine Body
Abstract：This paper introduces how to realize the net processing of car's engine body autmatically with laser,an this paper also gives and explanation about the net processing from the data control configuation to control program of the laser quenching.Keywords：Laser quenching;Net of car's engine body;Program design- 37
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Published：2020-08-12 -
Industrial Local Process Monitoring & Control Platform SOAR A Software Package of PC-based Industrial Automation Process
Abstract：A new data acquisition and control software package, designed to run in industrial automation field side environment, have been developed. It has many advantages such as open architecture, program-less tool with an isolated user interface, directly I/O driver and dynamic display. The whole system is not larger than 1 MB, and can be installed in SSD easily. We can use SOAR to construct a high speed hard-disk-less system.Keywords：Computer;Industrial control;Control & monitoring software- 34
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Published：2020-08-12 -
Design of Stop Paying Instrument
Abstract：The basic points of stop paying instrument designing is discussed in this paper.According to these points, a convinient, reliable and realizable method is devised.The design ideal, design circuit theory and its application are also introduced.Keywords：Stop paying instrument;Stopped card;Coding scan- 36
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Published：2020-08-12 -
Research into Testing Scheme of Reliability Qualification of Complex Optoelectronic Systems
Abstract：For complex optoelectronic systems,this paper,according to theory of reliability testing,analyzes statistical test for exponential life hypothesis,describes fixed-time and fixed-number censored reliability testing,and fixed time testing standard scheme,discusses weighted failuress and test profile,combined environment condition.It plays directive roles of scheme design of reliability qualification test and production acceptance for complex optoelectronic systems.Keywords：Complex optoelectronic systems;Reliability;Qualification test;Scheme design;Mean time between failure- 45
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Published：2020-08-12 -
Installation and Adjustement for Measuring System of Coal Heaps
Abstract：In order to use MDJ-2 measuring system of coal heaps,it is presented in detail in this paper that remoulding of door type piling up and taking away machine and installation for this measuring system.Technical standard and careful items are pointed out.Finally it is given that methods and steps of adjusting this system in the field.The paper is of importance to developing products and expanding sales.Keywords：Optic triangulation;Non-contact measurment;Laser application;CCD camera- 41
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Published：2020-08-12
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Design,Fabrication and Experiment of a Hybrid Diffractive-refractive Binary Optical System
Abstract：A hybrid diffractive-refractive binary optical system has been successfully designed and fabricated in Changchun Institute of Optics and Fine Mechanics,Academia Sinica by the authors of this paper.The focal length of the system is 800 mm,the effective aperture 76 mm and the imaging spectrum range from 435.8 nm to 656.3 nm.The measured axial MTF value of the system is 0.75 at the frequency 20 lp/mm,which offers significant improvement over that of a conventional system finely designed at the comparable conditions.Keywords：Binary optics;Diffractive optics;Optical system.- 51
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Published：2020-08-12 -
The Primary Study of Superpolishing of LiGaO2 Single Crystal for a Substrate of GaN Thin Film
Abstract：This paper represents a method and primary experimental results of superpolishing of LiGaO2 signle crystal as a substrate for GaN.We have achieved supersmooth surface roughness of less than 0.1nm by the chemo mechanical polishing with polyurethane lap and SiO2 solution.Keywords：Superpolishing;surface roughness;Ppolyurethane;LiGaO2;SiO2- 45
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Published：2020-08-12 -
Development Conditions of Resist in Soft X-Ray Contact Microscopy
Abstract：Different resolution pixels have a series of transmission coefficient,according to this feature of biological specimen,we device a protein model with several different high steps,calculate the resist exposure corresponding to every step,after exposure,measure the resist development speed,analyse the development condition quantitatively,find out a better method to control development condition,especially connect resist development with resolution closely.Keywords：Soft X-ray contact microscopy;Biological specimen;Resist;Development conditions- 44
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Published：2020-08-12 -
Development of High-precision Signal Simulator by D/A Converter
Abstract：By D/A and EPROM technique and according to the feature of inductosyn output working in the scale excited manner,a high precision signal simulator was developed in this paper.The test results demonstrate that this signal simulator may simulate the slide output accuractly.It makes the shakedown test obviously easy also.Keywords：Amplitude-modulation signal;EPROM;D/A converter;Coincidence counter- 40
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Published：2020-08-12
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