Preparation method of linear Fresnel lens and Fresnel lens prepared by preparation method

A linear Fresnel and lens technology, applied in the field of Fresnel lenses, can solve the problems of Fresnel lenses such as poor weather resistance, complicated preparation process, and low production efficiency, and achieve easy operation, simple preparation method, and overcome poor weather resistance Effect
CN102809770AActive Publication Date: 2012-12-05NANJING SOLGLASS SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NANJING SOLGLASS SCI & TECH
Publication Date
2012-12-05

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Abstract

The invention discloses a preparation method of a linear Fresnel lens and a Fresnel lens prepared by the preparation method. The preparation method comprises the following steps of melting glass raw materials, rolling, cooling and annealing in sequence. The linear Fresnel lens prepared by the preparation method comprises an incident surface, an emergent surface and insection on the emergent surface. The preparation method of the linear Fresnel lens is simple, easy to operate, suitable for continuous production and applicable to any glass material which can be used for preparing the linear Fresnel lens; the production efficiency is improved greatly, and the production cost is reduced greatly at the same time; and moreover the prepared linear Fresnel lens is made integrally, so that the defects that a linear Fresnel lens in the prior art is poor in weather resistance, high in cost and the like are overcome; and a lens prepared by the preparation method has a good light focusing efficiency.
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Description

technical field

[0001] The invention relates to a preparation method of a linear Fresnel lens and the obtained Fresnel lens. Background technique

[0002] Fresnel lens is a kind of planar "convex lens", which replaces convex lens in many application fields. It has a smooth surface on one side and tooth patterns on the other side. Through these tooth patterns, the light band in the specified spectral range can be reflected or Refraction, which brings light rays passing through a lens to a focal point.

[0003] The structure of Fresnel lens is generally divided into circular Fresnel lens, linear Fresnel lens, etc., among them, the circular Fresnel lens will converge the incident parallel light The incident parallel light (sunlight) can be converged into a linear focal spot, which has broad application prospects in the fields of solar photovoltaic power generation, solar thermal power generation, and solar thermal utilization.

[0004] At present, Fresnel lenses are made of t...

Claims

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