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Glass sheet for optical lens and preparation method thereof

A technology of optical lens and glass sheet, applied in glass manufacturing equipment, glass molding, glass rolling, etc., can solve problems affecting optical performance, insufficient compactness, affecting strength, etc., to achieve good optical performance, high compactness, The effect of not easy to break

Inactive Publication Date: 2017-04-26
ANHUI CHANGGENG OPTICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lens material of the optical lens is generally resin material or glass material. Both materials have their own advantages and disadvantages. As an optical lens made of glass, it is easy to break, but has good optical performance. However, due to the different production processes, for some cast optical glass Insufficient compactness, which not only affects its strength, but also affects its optical properties after grinding and polishing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A production process of optical lens glass, comprising the following steps:

[0029] (1) Ingredients: Weigh raw materials according to the following parts by weight: 100 parts of silica sand, 50 parts of sodium carbonate, 20 parts of quartz stone, 1 part of alumina powder, 0.5 part of sodium nitrate, 2 parts of amphibole, 0.2 part of cerium oxide, trioxide 1 part of diantimony, 0.8 parts of tetrabutyl titanate, 3 parts of N,N-dimethylformamide, 1 part of polyethylene glycol, 3 parts of decolorizing agent, 2 parts of leveling agent, 3 parts of additive;

[0030] (2) Melting: the raw materials mixed with the ingredients are heated at a high temperature of 1550 degrees in the melting furnace to form a uniform liquid glass;

[0031] (3) Forming: calendering into a base material with a thickness of 3mm under a vacuum condition of 800°C;

[0032] (4) Heat treatment: through annealing and quenching processes, eliminate or generate stress, phase separation or crystallization i...

Embodiment 2

[0035] A production process of optical lens glass, comprising the following steps:

[0036] (1) Ingredients: Weigh raw materials according to the following parts by weight: 120 parts of silica sand, 55 parts of sodium carbonate, 40 parts of quartz stone, 5 parts of alumina powder, 0.8 part of sodium nitrate, 5 parts of amphibole, 0.3 part of cerium oxide, trioxide 5 parts of diantimony, 2 parts of tetrabutyl titanate, 5 parts of N,N-dimethylformamide, 3 parts of polyethylene glycol, 5 parts of decolorizing agent, 4 parts of leveling agent, 8 parts of additive;

[0037] (2) Melting: the raw materials mixed with the ingredients are heated at a high temperature of 1600 degrees in the melting furnace to form a uniform liquid glass;

[0038] (3) Forming: calendering into a substrate with a thickness of 15mm under a vacuum condition of 1000°C;

[0039] (4) Heat treatment: through annealing and quenching processes, eliminate or generate stress, phase separation or crystallization in...

Embodiment 3

[0042] A production process of optical lens glass, comprising the following steps:

[0043] (1) Ingredients: Weigh raw materials according to the following parts by weight: 110 parts of silica sand, 53 parts of sodium carbonate, 30 parts of quartz stone, 3 parts of alumina powder, 0.7 part of sodium nitrate, 3 parts of amphibole, 0.25 part of cerium oxide, trioxide 4 parts of diantimony, 1.3 parts of tetrabutyl titanate, 4 parts of N,N-dimethylformamide, 2 parts of polyethylene glycol, 4 parts of decolorizing agent, 3 parts of leveling agent, 5 parts of additive;

[0044] (2) Melting: the raw materials mixed with the ingredients are heated at a high temperature of 1580 degrees in the melting furnace to form a uniform liquid glass;

[0045] (3) Forming: calendering into a substrate with a thickness of 10mm under a vacuum condition of 900°C;

[0046] (4) Heat treatment: through annealing and quenching processes, eliminate or generate stress, phase separation or crystallization ...

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PUM

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Abstract

The invention provides a glass sheet for an optical lens, and relates to the technical field of optical glass production. The glass sheet is prepared from the following ingredients in percentage by mass: silica sand, sodium carbonate, quartzite, alumina powder, sodium nitrate, amphibole, cerium oxide, diantimony trioxide, tetrabutyl titanate, N,N-dimethylformamide, polyethyleneglycol, a decolourant, a flatting agent and an additive. The produced optical lens has the advantages that the glass strength is high; the compactness is high; the optical performance is good; fragmentation cannot easily occur.

Description

[0001] Technical field: [0002] The invention relates to the technical field of optical glass production, in particular to a glass sheet for an optical lens and a preparation method thereof. [0003] Background technique: [0004] The optical lens is an essential part of the machine vision system, which directly affects the quality of the image and affects the realization and effect of the algorithm. Optical lenses can be divided into short-focus lenses, medium-focus lenses, and telephoto lenses in terms of focal length; wide-angle, standard, and telephoto lenses in terms of field of view; fixed-aperture fixed-focus lenses and manual aperture fixed-focus lenses in terms of structure. Auto-iris fixed-focus lenses, manual zoom lenses, auto-zoom lenses, auto-iris electric zoom lenses, electric three-variable (aperture, focal length, and focus) lenses, etc. The lens material of the optical lens is generally resin material or glass material. Both materials have their own advantage...

Claims

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Application Information

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IPC IPC(8): C03C6/06C03C4/00C03B13/01B24B13/00
CPCC03C1/00B24B13/00C03B13/01C03C4/00
Inventor 张小华
Owner ANHUI CHANGGENG OPTICS TECH CO LTD
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