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Issue 2 ， 1993
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Calculation and Design of Programme for Initial Structure of Complicated Optical System
Abstract：This paper describes the importance of calculation for the initial structure of complicated optical systems, introduces the considerations well as the design and the usage of the programme, fininally, two examples,proves the effectiveness of this method.- 41
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Published：2020-08-12 -
Design and Fabrication of Binary Phase Grating
Abstract：A new design method for binary phase grating used as array generator is presented and the effects of fabrication errors on the efficiency of the grating are investigated. As a example, a phase grating made by using film deposition was tested and the results agree with the theoretical analysis.- 67
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Published：2020-08-12 -
Dynamic Measurement of Grating Linear Scales
Abstract：This paper describes a the accuracy of grating linear scales by laser heterodyne interfer-ometry, and introduces the characteristic of the instrument for it. The accuracy of the instrument is about 1.5m in the range of 2.2m.Keywords：Grating linear scales;Laser heterodyne interferometry;Measurement instrument- 54
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Published：2020-08-12 -
The Design of 2-D Laser Measuring Device in Curved Surface Contour Measurement
Abstract：This paper describes a theory of 2-d optical mesurement in detail points out the approximaty of the relation between surface undulation and image of light spot,derives accurate relations of all components in triangle measuring device and gives out the relation between measuring range ang the image of light spot. At last, the possibility and the method for the ajust the device is illustrated accarding.Keywords：Curved surface;laser;optical measurement- 43
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Published：2020-08-12 -
The Design of Command Control Communication and Intelligence System
Abstract：This paper disscussed the design of command control communication and intelligence system. The system structure,and some methods,techniques and questions in design are presented.- 45
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Published：2020-08-12 -
Linear Subtraction Angiography Instrument of Encephalo-angiography
Abstract：It is very unconvenient to doctor if there are blood vessel,flab skeletion etc. interweaved on one encephalo-angiogram negative. Therefier it is need to use subtractive instrumect to subtract some unnecessary and disorderly background image. As a result only the blood vessle image is left for doctor to diagnose.This paper describes instrument which is different form the digital subtraction and the film subtract. Using the nonlinear foot part of exposure characteristic of the film and the fog part close to it,only one time exposure can eliminate the unnecessary and disorderly back-grund image and makes a good blood vessel image for doctor to diagnose.- 47
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Published：2020-08-12 -
A High Speed Multifunction Image Processing System
Abstract：A high speed multifunction binary image processing system is described in this paper. The system consists of logical circuits and can be used different image processing as contour tracking, thinning,dilating and eroding. The processing speed is limited only to the propagation delays of hardwares. An application example is alao presented in the paper.Keywords：Binary image processing system;Logical circuits;Contour tracking- 41
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Published：2020-08-12 -
Experiments on Multi-image Storage in Photorefractive Crystal Cu-doped KNSBN
Abstract：Recently,photorefractive nonlinear devices are widely used in the field of highly parallel image processing. Photorefractive devices are notably demonstrated in image edge enhancement,image addition/subtraction,photorefractive incoherent-to-coherent optical converter (PICOC), image correlation/convolution and soon this paper, describes our study on multi-image information storage in Cu-doped KNSBN crystal bulk,points out that this technique can be possibly used in optical pattern recognition and shom some results. Moreover,the paper also represents a theoretical analysis on the technology of multi-image holographic recording with equal diffraction efficiency.Keywords：Photorefractive effect;Holographic information storage;Volume grating- 64
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Published：2020-08-12 -
Frequency Spectrum Analysis on and Considerations for Improving the Even Loading in Planetary Gearing
Abstract：In this paper,through the frequency spectrum analysis of the dymamic error curves of planetary gearing,the influences of vaious errors are analyzed for the even loading of planerary gearing.This paper suggcsts a low cost and efficient method for inproving the even loading in planetary gearing.Keywords：Planetary gearing;Even load;Test.- 38
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Published：2020-08-12 -
The Effect of Heat Treatment on the Structures and Properties of Nonmagnetic Cast Iron
Abstract：This paper deals with the effect of ageing temperature and time on the structures and properties of nonmagnetic cast iron. The optimum heat treating cycle to guide production has been obtained.Keywords：Nonmagnetic cast iron;Heat treament technology- 59
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Published：2020-08-12 -
Some Factors to Effect on Layer Quality for Electrostatically Coating Phosphors
Abstract：In this paper some factors to effect on phosphor layer guality using electrostatic deposition techniques for U-shape fluorescent lamps are analysed,including high voltage power, resistivity of the glass tubes and phosphor particles, and their heated temperatures during coated phosphors, design of the sprayers etc. Finally this paper represents the defects often occured and the way to overcome them.- 38
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Published：2020-08-12 -
Development of a Periscope Used for Nuclear Pile
Abstract：The γ ray still quite stuong and the water temperature high after the pile stops operation, This paper describer the characteristic of the periscope for normal Operating in the environment above and represents methods for solving specific requirement above.- 62
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Published：2020-08-12 -
On Hydraulic Shock
Abstract：This paper discusses the hydraulic shock in hydraulic drive using tupical examples. The reasons which result in hydrailic shock are analysed. It also suggests that hydraulic shock could be reduced by ingeniously designing hydraulic loop.- 37
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Published：2020-08-12
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A Study on Laser Cladding Ni-Cr-B-Si Alloys-Structure and Property of Coating Layer
Abstract：In this paper,the microstructure and property of Ni-Cr-B-Si alloy coating layer are described,the influence of pre-diposition processing of the alloy powder and laser cladding parameter on them are also discussed.- 49
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Published：2020-08-12
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