Manufacturing method and device of high uniformity and high consistent optical glass

A technology of optical glass and manufacturing method, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of large refractive index fluctuation of optical glass, poor optical uniformity, poor refractive index consistency, etc., and shorten the production time. Cycle, saving melting cost, strong inclusive effect

Active Publication Date: 2018-08-17
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

Due to the high volatility, high chamber pressure and instability of flame combustion, the refractive index of optical glass fluctuates greatly, the refractive index consistency is poor, and the optical uniformity becomes poor.

Method used

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  • Manufacturing method and device of high uniformity and high consistent optical glass
  • Manufacturing method and device of high uniformity and high consistent optical glass
  • Manufacturing method and device of high uniformity and high consistent optical glass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Select H-ZK21 glass (refractive index n d标准值 : 1.62299) as the implementation object, the data before and after the implementation of the present invention are compared, and the glass refractive index value in a certain production cycle before and after the present invention is statistically analyzed. Sampling rules: according to the requirements of the production process, take every 2 hours For one sample, the sample is quenched at -25°C / H quenching rate, and then the refractive index n of the sample is measured d The value is calculated based on the refractive index difference between two adjacent samples. In order to evaluate the consistency of the refractive index, Δn d (Δn d =n d后 -n d前 ) to evaluate the process capability cpk index. The uniformity of optical glass is calibrated by the maximum value of the measured value of uniformity after fine annealing of a single product. Its embodiment result contrast is shown in the following table:

[0040]

Embodiment 2

[0042] Select H-F4 glass (refractive index n d标准值 : 1.62005) as the implementation object, the data before and after the implementation of the present invention are compared. Statistically analyze the refractive index of the glass in a certain production cycle before and after the present invention, sampling rules: take a sample every 2 hours according to the requirements of the production process, quench the sample at a quenching rate of -25°C / H, and then measure the refractive index of the sample no d The value is calculated based on the refractive index difference between two adjacent samples. In order to evaluate the consistency of the refractive index, Δn is introduced d (Δn d =n d后 -n d前 ) to evaluate the process capability cpk index. The uniformity of optical glass is calibrated by the maximum value of the measured value of uniformity after fine annealing of a single product. Its embodiment result contrast is shown in the following table:

[0043]

[0044] Fr...

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Abstract

The invention disclose a manufacturing method and device of high uniformity and high consistent optical glass and belongs to the technical field of manufacturing of optical glass. The device can remarkably improve the uniformity and consistency of optical glass and is mainly characterized in that bubblers are arranged at the bottom of a melting tank; a homogenization tank is arranged between the melting tank and a warming chamber; the homogenization tank is provided with a homogenization tank electrode, homogenization tank burners and a stirring rod; the manufacturing method is characterized by comprising the steps of S1, preparing a mixture material of the optical glass according to a formula of glass, uniformly mixing; S2, separately performing granulation on the mixture material according to a crucible batch to prepare into a granular mixture material; S3, taking different crucible batch granular mixture material according to a weight proportion to perform secondary mixing again; S4, bubbling in the melting tank and enhancing convective flow of glass liquid and the dissolving of material, the formula is shown in the description; S5, a stirring device in the homogenization tank is used for stirring and homogenizing the glass liquid, the formula is shown in the description; S6, after the glass liquid passes through the warming chamber, a clarifying chamber, a cooling chamber and a working chamber, injecting the glass liquid into a mold to be shaped into glass strip and precision annealing. The manufacturing method disclosed by the invention can obtain the high uniformity and high consistent optical glass through one step melting, and improve the efficiency of glass melting.

Description

technical field [0001] The invention belongs to the technical field of optical glass manufacturing, and in particular relates to a manufacturing method and device for high-uniformity and high-uniformity optical glass. Background technique [0002] With the development of technologies such as face recognition, virtual reality, augmented reality, and laser projection, the requirements for high-definition imaging are getting higher and higher, so the requirements for technical indicators of optical glass are also becoming more and more stringent. Not only requires high internal quality of optical glass such as bubbles and stripes, but also puts forward higher requirements for transmittance, consistency of refractive index of batch products, and uniformity of products, especially for the consistency of refractive index of products And the high uniformity of the product puts forward strict requirements. The high uniformity of optical glass mainly depends on two aspects: 1. Melti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B1/00C03B1/02C03B5/187C03B5/225C03B5/235C03B19/02
CPCC03B1/00C03B1/02C03B5/187C03B5/225C03B5/235C03B19/02
Inventor 姜敬陆李晓龙刘向东张小建李兢
Owner HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD
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