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What are important properties of optical glass

2017/4/27      view:

                Optical glass is divided into two major categories of optical glass and colorless optical glass.


                Colored optical glass is divided into phosphate glass, silicate glass. The selenium and cadmium coloring, coloring ions and neutral (dark) ion selective glass coloring absorbing glass.


Optical glass


                An inorganic glassy state of light by refraction, reflection, transmission of light or by absorption of light intensity or spectral distribution. Stable optical properties and high optical uniformity. According to the optical properties of the optical glass. The optical constants have special requirements, which have the characteristics of high transmittance and non selective absorption of the visible region. Abbe number size according to the crown and flint glass, all kings and according to the refraction rate level is divided into several kinds and according to the refraction rate size are arranged in order. Used as a telescope, a microscope, a camera lens, a prism, a mirror, etc.. Anti radiation optical glass. For high energy irradiation, there is a large absorption capacity, high lead glass and CaO-B2O2 system glass, the former can prevent the gamma rays and X ray irradiation, the latter can absorb slow neutrons and thermal neutrons, mainly used in nuclear industry, medicine and other medical fields as a shield and peep window materials. Radiation resistant optical glass. Under certain gamma rays and X - rays, the transmittance of the visible region is less, and the varieties and grades are the same as that of the colorless optical glass. The colored glass. Also known as filter glass. On the ultraviolet, visible and infrared region specific wavelength selective absorption and transmission performance, according to the spectral characteristics of selective absorption type, cut-off type and neutral gray 3 kinds; according to the mechanism of color, metal colloid coloring and sulfur selenium of 3 kinds of color, mainly used in the manufacture of filter. The ultraviolet and infrared optical glass. The ultraviolet or infrared band has a specific optical constant and high transmittance, used as a UV, infrared optical instrument or as a window material. The optical quartz glass. Silica as the main component, with high temperature, low expansion coefficient, high mechanical strength, good chemical properties, etc., for the manufacture of various kinds of band through a special requirements of the prism, lens, window and mirror, etc.. In addition, it can also be used for large scale integrated circuit manufacturing of a photomask plate, liquid crystal display panel, image optical disc substrate sheet glass; optical along the magnetic field line through the glass plane of polarization occur rotating magneto optic glass; optical according to certain direction through transmission ultrasonic glass, light diffraction, reflection, sink or optical frequency shift of the acousto optical glass.