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A method for controlling inclusions in artificial lenses

An artificial crystal and control method technology, which is applied in the directions of crystal growth, chemical instruments and methods, single crystal growth, etc., to achieve the effects of reducing growth, improving inclusion level, and increasing raw material utilization.

Active Publication Date: 2016-03-23
北京石晶光电科技股份有限公司
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  • Abstract
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Problems solved by technology

In addition, due to the nature of IOLs, it is unnecessary to grow too many positive X regions.

Method used

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  • A method for controlling inclusions in artificial lenses
  • A method for controlling inclusions in artificial lenses

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0016] According to the requirements of different products, we design L-shaped baffles of corresponding specifications. The material used is cold-rolled sheet with a thickness of less than 1.5mm, and the iron content of the cold-rolled sheet is more than 80%. The L-shaped baffle is designed for the X, Y, and Z directions of the IOL: the length of the Y direction is the same as the length of the IOL; the size of the Z direction is between 20 mm and 50 mm; the X direction is equal to the growth amount of the IOL in the X direction plus IOL width in X direction.

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Abstract

The invention relates to a method for controlling intraocular lens inclusions, which specifically includes the following steps: (1) designing an L-shaped baffle, the L-shaped baffle is designed for three directions of X, Y, and Z of the IOL: Y direction The length is the same as the length of the seed crystal; the Z direction is subject to the requirements of the artificial crystal; the X direction needs to be determined according to the growth amount in the X direction plus the width of the seed crystal in the X direction under different process conditions; (2) Surface treatment and cleaning of the L-shaped block , Cleaning; (3) Install an L-shaped block on the seed crystal and fix it on the seed crystal frame; (4) Put the seed crystal frame in an autoclave to grow artificial crystals. The invention has the advantages of reducing the growth of inclusions, improving the level and good rate of inclusions of artificial crystals, and improving the utilization rate of raw materials at the same time.

Description

technical field [0001] The invention relates to artificial crystal cultivation technology, in particular to a method for controlling artificial crystal inclusions. Background technique [0002] Artificial crystals were grown by hydrothermal method on SiO 2 grown in a supersaturated solution. At normal temperature and pressure, quartz crystals are insoluble in water and have no effective co-solvent. However, high temperature and high pressure are conducive to the dissolution of quartz crystals, and the required solubility of quartz crystals can be achieved after adding an appropriate co-solvent. The cultivation of artificial crystals mainly relies on supersaturated SiO under high temperature and pressure. 2 In the recrystallization on the seed crystal, inclusions are easily formed during the recrystallization process due to the impurities of the raw materials and the shedding of the inner wall of the autoclave. In addition, due to the nature of the artificial lens, it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B7/10C30B29/18
Inventor 郭卫民于德龙
Owner 北京石晶光电科技股份有限公司
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