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Manufacturing method and device of light-focusing Fresnel lens

The technology of a Fresnel lens and a manufacturing method, which is applied in the field of manufacturing a concentrating Fresnel lens, can solve the problems of difficult removal of air holes, slow production speed, and difficult process, and achieve fast production speed, less air holes, and simple process Effect

Inactive Publication Date: 2011-06-15
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The embodiment of the present invention provides a method and device for manufacturing a concentrating Fresnel lens, which is used to solve the problem of difficult process caused by the need for secondary forming in the first prior art, and at the same time solve the problem provided by the second prior art. The production method has the problems of slow production speed, difficult demoulding and difficult removal of pores

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  • Manufacturing method and device of light-focusing Fresnel lens
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  • Manufacturing method and device of light-focusing Fresnel lens

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Abstract

The invention discloses a manufacturing method and device of a light-focusing Fresnel lens. The method provided by the invention comprises the following steps: (1) providing a clean and ultrawhite glass substrate and spraying a selected material on the upper surface of the ultrawhite glass substrate so as to form a coating layer with a preset width; (2) adopting a cylindrical die-pressing roller of which one outer side surface is in the shape of the surface of the light-focusing Fresnel lens to carry out rolling and die-pressing on the coating layer; and (3) curing the coating layer after being rolled and die-pressed. In the manufacturing method of the light-focusing Fresnel lens provided by the invention, the production speed is high, the demoulding is simple, the produced Fresnel lens does not have air holes almost and the practicability is strong.

Description

Manufacturing method and device of a concentrating Fresnel lens technical field The invention relates to the field of concentrating photovoltaics, in particular to a method and device for manufacturing a concentrating Fresnel lens. Background technique With the depletion of global fossil energy and the enhancement of human awareness of environmental protection, solar power generation with photovoltaics as the core has developed rapidly in recent years. However, the price of solar power generation systems has remained high, mainly due to the low density of solar energy and the low conversion efficiency of solar cells. In order to reduce the price of solar power generation systems, high-power concentrating solar photovoltaic power generation technology has emerged as the times require. Concentrating photovoltaic power generation technology combines traditional solar photovoltaic technology with large-scale concentrated solar power plants, which can greatly enhance solar ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/08G02B1/00H01L31/052H01L31/055
CPCY02E10/50Y02E10/52
Inventor 王智勇卫明
Owner BEIJING UNIV OF TECH
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