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Optical glass and preparation method thereof

A technology of optical glass and press molding, which is applied in glass manufacturing equipment, glass pressing, glass molding, etc. It can solve problems such as poor devitrification resistance, increased glass density, and aggravated corrosion of melting vessels, so as to improve chromatic aberration , excellent performance, light weight and miniaturization effect

Active Publication Date: 2018-12-11
HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excess Bi 2 o 3 The addition of will not only increase the corrosion of the melting vessel, but also increase the density of the glass, and the devitrification resistance will also deteriorate.

Method used

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  • Optical glass and preparation method thereof
  • Optical glass and preparation method thereof
  • Optical glass and preparation method thereof

Examples

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preparation example Construction

[0113] The present invention also provides a method for preparing the optical glass according to the present invention, which includes: weighing and mixing the components according to the proportion, mixing them uniformly, melting them, and then pouring or leaking them into a molding mold, or directly pressing them into shape.

[0114] Specifically, the preparation method includes: weighing each component according to a specified ratio, mixing them uniformly to make batches, and putting the prepared batches into a smelting device made of quartz or corundum, etc., at 800 It is melted in an oxidizing atmosphere at a temperature of -1350°C, stirred evenly, and then poured into water. Drain and dry the poured cullet and put it into a crucible made of precious metals (Au, Pt, etc.) for secondary melting, and pour or leak into a molding mold for molding, or directly press molding.

[0115] The present invention also provides an optical element comprising the optical glass of the pre...

Embodiment

[0117] Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only for illustrating the present invention, and should not be considered as limiting the scope of the present invention. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all commercially available conventional products.

[0118] The components of Examples 1-56 in Tables 1-7 are weighed in proportion and mixed uniformly to make a batch, and the prepared batch is put into a quartz or corundum crucible, at a temperature of 900-1350°C and Under an oxidizing atmosphere, melt and stir for 6-8 hours, then pour into water, drain and dry the poured broken glass, and then put it into a crucible mad...

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Abstract

The invention relates to optical glass and a preparation method thereof. The optical glass is prepared from the following components in percentage by weight: 10-21% of P2O5, 10-50% of Bi2O3, 0-50% ofNb2O5, 0-20% of TiO2, 0-12% of WO3, 0-6% of SiO2, 0-6% of B2O3, 0 -6% of Li2O, 0-4% of Na2O, 0-6% of K2O, 0-4% of Al2O3, 0-3% of ZrO2, 0-5% of CaO, 0-5% of ZnO, 0-30% of Ba0, 0-2% of MgO, 0-3% of SrOand 0-0.1% of Sb2O3. The optical glass has the advantages of being excellent in performance, high in refractive index, high in dispersion and capable of decreasing the number of lens, prisms and otheroptical elements used in an optical system, and therefore the requirements of light weight and miniaturization of the overall optical system are met.

Description

technical field [0001] The invention relates to an optical glass and a preparation method thereof, belonging to the technical field of optical glass. Background technique [0002] Environmentally friendly high refractive index and high dispersion optical glass is mainly used in photographic equipment such as digital cameras and video cameras, image projection equipment such as projectors and projection TVs, and optical equipment such as telecommunication, optical information technology, mobile hard disk, and laser technology. Due to its high refractive index and high dispersion, it can reduce the number of optical elements such as lenses and prisms used in the optical system, thereby meeting the requirements of overall light weight and miniaturization of the optical system. Glass with a refractive index greater than 2.0 is also beneficial to improve the chromatic aberration of the optical system, so the demand for high-refractive high-dispersion glass is increasing. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/066C03B19/02C03B11/00
CPCC03B11/00C03B19/02C03C3/066
Inventor 李建新霍金龙陈超徐华峰梁立新
Owner HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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