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The Development Of Optical Glass And The Development Of Optical Instruments Are Inseparable

Edit:Shanghai TaiYang Technology Co.,Ltd      Date:Aug 08, 2017

  The development of optical glass and the development of optical instruments are inseparable. The new reform of the optical system is often to the optical glass to make new demands, thus promoting the development of optical glass, the same, the success of new varieties of glass production also often in turn promote the development of optical instruments.

  The first optical material used to make optical parts is a natural crystal, allegedly used as a lens for ancient times, and in ancient China, natural tourmaline (tea mirror) and yellow crystal were used. The archaeologists proved that three thousand years ago in Egypt and we (the Warring States Period) people had been able to make glass. But the glass as glasses and mirrors or the thirteenth century began in Venice. Engels in the "natural dialectics" in this has given a high evaluation, that this is one of the outstanding inventions. Since then, as astronomers and maritime development needs, Galileo, Newton, Descartes, etc. also made use of glass telescopes and microscopes. From the beginning of the sixteenth century glass has become the main material for the manufacture of optical parts.

  By the seventeenth century, the achromaticity of the optical system became the central problem of optical instruments. At this time due to the improvement of the glass composition, the introduction of lead oxide in the glass, Hull was in 1729 to obtain the first achromatic lens, since then, the optical glass was divided into two major categories of crown and flint glass.

  In 1768, Ji Nan made a uniform optical glass in France by the first method of mixing with clay sticks, and began to establish a separate optical glass manufacturing industry. In the middle of the nineteenth century, several developed capitalist countries have established their own optical glass factory.

  Nineteenth century optical instruments have great development. On the eve of the First World War, Germany in order to quickly develop military optical instruments, requiring to break the lack of optical glass varieties of restrictions. At this time, the famous physicist took part in the work of the factory. He added new oxides such as BaO, B2O3, ZnO, P2O3, etc. in the glass, and studied its effect on glass optical constants. On this basis, the development of barium crown, boron crown, zinc crown and other types of glass, but also began trial production of a special part of the dispersion of flint glass. During this period, the variety of optical glass has been greatly expanded, and thus in the optical instrument appeared a more complete camera and microscope objective.

  Until the thirties of the twentieth century, most of the work was still carried out on the basis of the factory. To 1934 received a series of heavy injustice glass, such as the German SK-16 (620/603) and SK-18 (639/555) and so on. At this point, it can be considered a stage of the development of optical glass.

  Before and after the Second World War, with the development of various optical instruments such as aerial photography, ultraviolet and infrared spectroscopy instruments, advanced photographic glasses, there was a new need for optical glass. At this time, the optical glass also has a corresponding new development. In 1942, the United States Morey and later the Soviet Union and Germany, science workers have successively put the rare and scattered oxide into the glass, thus expanding the glass varieties, has been a series of high refractive index low dispersion of optical glass.

  Because of the defects in the processing or use of various new varieties of optical glass, it is also aimed at improving the physical and physical and chemical properties of various new varieties of optical glass while studying the field of expanded optical glass. As well as the production process carried out a lot of work.


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