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Optical glass

A technology of optical glass and optical components, which is applied in the field of borosilicate lanthanide optical glass, can solve the problems of increasing the cost of glass, and achieve the effects of good coloring, good crystallization performance, and suitable production

Active Publication Date: 2013-05-08
HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The glass disclosed in the patent application CN1876589A belongs to the same kind of glass as the present invention, but it contains more than 15% Ta 2 o 5 , expensive Ta 2 o 5 Will greatly increase the cost of glass

Method used

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Embodiment

[0035] Examples 1 to 10 in Table 1 and Table 2 are used by the present invention to illustrate the borosilicate lanthanide optics with a refractive index (nd) between 1.75 and 1.77 and an Abbe number (vd) between 39 and 41. Typical experiments with glass.

[0036] Calculate, weigh, and mix these raw materials according to the ratios provided in the following tables 1-2, and according to conventional methods in the art, put the prepared batch into the smelting device (in view of the application requirements of the present invention, the smelting device needs to adopt a platinum crucible , platinum stirrer), and then take appropriate stirring, clarification, and cooling processes at 1300°C to 1350°C for smelting, then pour or leak into the molding mold at 1150°C to 1250°C, and anneal at 630°C to 660°C to eliminate Stress, or press molding by secondary pressing technology, can make this kind of environment-friendly borosilicate lanthanide optical glass or optical element.

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Abstract

The invention provides lanthanum borosilicate optical glass taking SiO2, B2O3, La2O3, Nb2O5, ZrO2 and TiO2 as primary ingredients, wherein the optical glass does not contain substances harmful to the environment, for example, lead, thorium, cadmium, arsenic, fluorine and the like, and does not contain valuable materials such as Ta2O5, Gd2O3 and the like; the refractive index (nd) of the optical glass is 1.75-1.77; the abbe number (vd) is 39-41; and the optical glass has the characteristics of being good in crystallization properties, good in pigmentation degree, and suitable for production. Based on the weight percent of the compound, the optical glass contains 8-14% of SiO2, 19-26% of B2O3, 18-23% of La2O3, 0-5% of Y2O3, 2-5% of ZrO2, 5-10% of Nb2O5, 20-25% of BaO, 0-4% of SrO, 0-5% of CaO, 0-2% of ZnO, 0-3% of WO3, 1-5% of TiO2, and 0-1% of Sb2O3, wherein the sum of the contents of La2O3 and Y2O3 is 19-25%; and the sum of the contents of BaO and CaO and SrO is 22-27%.

Description

technical field [0001] The invention relates to an optical glass, in particular to a borosilicate lanthanide optical glass with a refractive index (nd) between 1.75-1.77 and an Abbe number (vd) between 39-41. Background technique [0002] With the fierce competition and development of the optoelectronic product market, manufacturing optical materials with high yield and low cost is the goal of every optical material manufacturer. On the other hand, in recent years, digital cameras, digital video cameras, camera phones, etc. have become increasingly popular, and the degree of integration and functions of mechanical devices used in optical systems have increased rapidly. In this case, the optical system is required to achieve higher accuracy, resolution, and reduce the weight and size of the optical system. In order to meet the high-pixel, small and light requirements of high-end digital products, the demand for borosilicate lanthanide optical glass with advantages such as hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/00C03C3/068C03C10/00
Inventor 赵仲勋霍金龙张卫梁立新
Owner HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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