Chinese Version Light学术出版中心
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Issue 2 ， 1990
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A Study of the Mg(PO3)2—AlF3—PbF2Glass Structures by Vibrational Spectroscopy
Abstract：The results from FT—IR and Raman Spectroscopy proved that the glass structures of Mg(PO3)2—A1F3—PbF2 ternary system in the high content of phosphate are metaphosphate structures. The structure networks are basically composed of[O = PO3/2] tetrahedra chains. With increasing the content of PbF2 the chains begin to break, and in the region of middle content of phosphate the main structures are [Al(O,F)4] and [P(O,F)4]tetrahedra and pyrophosphate. When the ratio of[Al(O, F)4] and[P(O,F)4]is equal to 1:1, the glass could not be formed.- 27
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Published：2020-08-12 -
High Temperature IR Spectra of Nioboborate Glass Melts
Abstract：This paper for the first time studied the structure of the Nioboborate glass melts in theNb2O5—B2O3—K2Osystem by high temperature IR spectra. The structure model of the glass melts and glass was established.Keywords：High temperature IR spectra;Structure of glass melts;Nioboborate glass- 35
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Published：2020-08-12 -
Homogeneity Measurement of Optical Materials by a Digital Wavefront Interferometer
Abstract：This paper describes a method for the homogeneity measurement of optical material which is free from the system errors and the sample geometrical errors. Using a microcomputer the variations of the refractive index and the thickness apart from a linear slop can be measured accurately by means of analyzing and processing four interferograms. Measurement results of two pieces of glass are given with the accuracy analysis.It shows the accuracy is 0.0000004 for a 2.5 cm thick sample.- 28
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Published：2020-08-12 -
A Precise Method for Determination of Entreme Value Position of Pass-band Period Multilayer—The Determination of Pass-band Entreme Value Position and Optimization for Waviness
Abstract：According to equivalent theory.It reports several methods for determination of pass-band entreme value position and optimization of waviness for period multilayers. It gives a kind of calculation methods aswellas the enperiment and calculation results for optimized short-wavepassed mutilayer.Keywords：Multilayer;Period multilayer;Entreme value position;Optimization- 33
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Published：2020-08-12 -
Characteristic Analysis and Preparation of Induced Transmission Filters
Abstract：The induced transmission filter with the combination of metallic and dielectrical coatings has good charicteristics of high transmission and wide throughput band. This paper feportes the fabrication of induced transmission filters that operates in the visible and infrared region respectively. The theory analysis, fabrication technologe and experiment result are also given in the paper.- 31
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Published：2020-08-12 -
OTF Measurement of the Microscope Objectives
Abstract：This paper describes the instrument for measuring OTF of the microscope objectives. It covers the principle, circuit design, computer interface and soft ware system as well as the performence and its effect.- 41
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Published：2020-08-12 -
The Reflection Luminous Intensity Evaluation of Typcal Flyer
Abstract：Luminous intensity or radiance intensity of flyers is very important phsical parameter for the system signal to noise ratio when they are detected or tracked by a optical system. The reflection luminous intensity depands on the illumiance of incident light the shape and the surface reflectance of flyer, the geometrical relation between the directions of sight and incident light. The calculations for reflection luminous intensities of plane, sphere, cylinder and circular cone are given in this paper. Then, the reflection luminous intensity of a rocket is calculated with above results.Keywords：photometry;Reflection- 40
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Published：2020-08-12 -
A Study on Wearing Capacity of Twist Drill and Chip Breaking Under Low Frequency Vibration
Abstract：By using the principles of vibrocutting experiment study on wearing capacity of drilling tool and chip disposal under low frequency vibration is presented in this paper also included in this paper are the optimal range of the wearing capacity of twist drill and the relationship between the formation of the chip and the frequency-to-retations ratie.- 43
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Published：2020-08-12 -
A 23-bit Absolute Photo-electric Rotary Encoder
Abstract：The 23-bit absolute photo-electric rotary encoder developed is an up-to-date product with an angular resolution of 0.15 seconds of arc, an accuracy of better than ?0.6 seconds of arc, great reliability and stability. This paper describes Its operation principle.- 63
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Published：2020-08-12 -
Design of Data Base Management System of Photoelectric Theodolite
Abstract：This paper describes design and application of data base management system of photoelectric theodolite. The architecture and function module of this system are introduced. The real-time data architecture and the relationship between management system and photoelectric theodolite mesuring operation are also analyzed and discussed.- 43
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Published：2020-08-12 -
Focal Distance Output of Camera Zoom Lens and Accuracy Analysis
Abstract：Zoom lens for measument televesion system is different from the ordinary. It is needed for a real-time output equipment of focal distance. In this paper, basic construction of zoom lens and principle of the focal distance output circuit are briefly described. We analyses mainly relations between the focal distance output and the measument accuracy, finding that the measument error distrabution at different focal distance varies with the convex wheel curve of zoom lens.- 44
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Published：2020-08-12 -
Microcomputer Monitoring and an Emergency Treatment System for the Combustible Gas Station
Abstract：This paper describes the basic principle of the micro- computer monitoring and an emergency treatment system for the combustible gas station, illustretes its hard are design and offers the partial software programming flowcharts.- 37
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Published：2020-08-12
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