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Issue 6 ， 1986
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Measurement of Strehl Ratio and Variation of Wavefront Error
Abstract：This paper discusses a new method to apply Fizeau interferometry. The principle is based on that the total intensity of an interferogram is a function of wavefront error. When the standard surface vibrates along the optical axis, this will change the wavefront aberration and also total intensity of the interferogram. Then we can get Strehl ratio and variation of wavefront error from intensity function.- 38
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Published：2020-08-12 -
Measurement of Stray Light in VUV Monochromatar Using Gas Absorption Method
Abstract：A method based on gas absorption and least-square fit is developed for measuring the stray Light in vacuum ultraviolet monochromators. Measurements of stray light in a N-100 Vacuum ultraviolet monochromator are carried out in the region 1650—1750Å.- 65
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Published：2020-08-12 -
Developments of Systems for Rising and Droping the Temperature and for Automatically Controling in an Instrument for Measuring the Temperature Coefficient of Refractive Index
Abstract：An automatic control system for measuring temperature coefficient of refractive index are described in this paper The uaccum furnace car, provide a stable temperature field Both the rate ot rising and droping temperature and degree of uaccum contorm to the technical needs Especially the linear automatical control of droping the temperature by semiconductor cooling is a new trial.- 69
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Published：2020-08-12 -
Abrupt Change of Electic Conductivity Caused by phase Separation in the Glass System Nb2O5-B2O3-K2O
Abstract：This peper reports the research results of the abrupt change of electric conductivity in the system of Nb2Q5-B2O3-K2O. The question of substance of this phenominon is explained by the effect of interface. Furter the possible reason for that the amorphous state has the higher electric conductivity than the crystalline state with the same composition is also given.- 51
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Published：2020-08-12 -
Determination of Thickness and Index of Corrosive Layers on Glass Surfaces
Abstract：This paper describes the principle of the polarimetric method for determining the thickness and index of thin films. The method has been applied to measure the physical chemistry properties of glass surfaces.- 66
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Published：2020-08-12 -
Development of an Automatic Data Sampling and Processing System in on Instrument for Measuring Temperature Coefficient of Retractive Index
Abstract：In this paper an automatic data sampling system in an instrument for measuring the temperature coefficient of refractive index is introduced. Using this system the measured precision of interference fringe and temperature are±0.06 and±0.5℃ respectively. These results meet the meet of accuracy(±5×10-7/℃)of temperature coefficient of refraetive index.- 44
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Published：2020-08-12 -
Some Physical Properties of Chinese Optical Glasses
Abstract：In this paper plots of thermal expansion of all sorts of chinese optiocal glasses ranging from -100 to 450℃ are shoum. According to the national standard the coefficients of mean linear thermal expansion in the range of fixed temperature, transformation temperature, density, young’s modulus, torsional rigidity modulus and poisson’s ratio of optical glasses are given. The data provided here could be useful to the related scientists and engineers.- 51
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Published：2020-08-12 -
Glass Forming Region and Properties of Glasses in System B2O3-La2O3-BaO-Nb2O5
Abstract：In this paper, glass forming region in quaternary system B2O3—La2O3—BaO—Nb2O5 is determined when composition of B2O3 is 25,30. and 35wt% respectivelly. The refractive index dispersion and density of the glasses in the system were measured. Experimental results indicated that the glass forming region was shifted to poor—Nb2O5 region with increasing of composition of B2O3. The vaoriting law of crystallizing, refractive index, dispersion and density of the glasses are discussed when SiO2and Al2O3 is substituted for B2O3 and BaO respectivelly. New optical glass La K713/538 has been developed on the basis of this work.- 29
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Published：2020-08-12 -
Tokyo 1985 International Tribology Conference
Abstract：This paper briefly introduces the general situation of Tokyo 1985 International Tribology Conference. The coafernce covered following treatises: Surface characterization and contact problems. Tribology of metals and fundmental problems. Tribology of nonmetals lubricants and additives. Boundary lubrication. Gas labrication. Solid labrication. Tribology of machine elements. Tribology in industries. Finally these treatises have been reviewed briefly.- 51
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Published：2020-08-12 -
The Development on Glass Science and Technology——ⅩⅣ International Congress on Glass
Abstract：In this paper, the international glass society and the general situation of ⅪⅤ international congress on glass are briefly introduced. The developments on glass sclence, technology and industry are comprehensively discussed. The direction of researching teaching and production in the future has been pointed out.- 31
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Published：2020-08-12
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