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OCM Fresnel Lens and moulding technology thereof

A technology of Fresnel lens and molding process, which is applied to lenses, other household appliances, optics, etc., can solve problems such as shortened service life, large thermal creep, and influence on power generation capacity, so as to ensure technical performance, reduce reflection loss, Effect of improving thermal stability

Inactive Publication Date: 2018-11-13
北京首耀科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] To sum up, the Fresnel lenses currently used in HCPV are mostly made of thermoplastics, although their technical and economic indicators such as light transmission, corrosion resistance, light-gathering effect and manufacturing cost can meet the basic requirements of the HCPV system, However, there are also serious shortcomings such as insufficient thermal stability, large thermal creep, and the surface is easily worn by wind and sand, which affects power generation capacity and shortens the service life.
These deficiencies of thermoplastic Fresnel lenses have become a technical bottleneck, seriously restricting the development of HCPV

Method used

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  • OCM Fresnel Lens and moulding technology thereof
  • OCM Fresnel Lens and moulding technology thereof
  • OCM Fresnel Lens and moulding technology thereof

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Embodiment Construction

[0062] Below in conjunction with accompanying drawing, the application is further described:

[0063] The present embodiment is OCM Fresnel lens, is used for HCPV module (see Figure 4 ) in optical components for gathering sunlight. The OCM Fresnel lens 1 is installed on the upper part of the module, and a high-concentration photovoltaic chip (solar cell) 3 is arranged at the focal spot, and a heat sink 4 is installed under the chip. A secondary condenser lens 105 is installed above the type photovoltaic chip 1 .

[0064] Depend on Figure 1~4 As shown, the appearance of this embodiment is a square thin plate, including an OCM (optical composite material) lens body 101 and an anti-reflection film 104 . On one side of the surface, several concentric serrated rings 102 are engraved at equal intervals; The toothed ring 102 assumes that the plano-convex lens 2 with the same optical parameters as the OCM Fresnel lens 1 is divided into several imaginary annular sleeves 202 at eq...

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Abstract

The invention relates to a lens and a moulding technology thereof, and specifically relates to an OCM Fresnel Lens and a moulding technology thereof; the OCM Fresnel Lens comprises an lens main body;the lens body comprises a substrate; an lens body is arranged one side of the substrate; a reflection reducing coating is arranged on the other side of the substrate; the lens body is provided with aplurality of annular insection rings; the advantages are that 1, the lens thermal stability and optically focused precision can be improved; 2, lens reflection losses are reduced, and the lens surfaceis protected from being eroded by sands; 3, the method ensures OCM Fresnel Lens technology performance, production efficiency and manufacture costs, thus realizing target technology performance and manufacture cost desired values.

Description

technical field [0001] The invention relates to a lens and its molding process, in particular to an OCM Fresnel lens and its molding process. Background technique [0002] Fresnel Lens, also known as threaded lens, is a lens invented by French physicist Augustin-Jane Fresnel in the early nineteenth century. The appearance of the Fresnel lens is in the shape of a thin plate. On one side of the surface, there are several concentric toothed rings with equal spacing. This kind of toothed ring is a plano-convex lens with the same optical parameters. For the sleeve, remove the linear optical path part with a rectangular longitudinal section in the middle of each annular sleeve, retain the toothed part composed of the spherical contour and the imaginary ring sleeve elevation, and then move all the toothed parts down to the base plate. Compared with ordinary lenses, it is characterized by less material consumption, small size and light weight. The original Fresnel lenses were used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/08G02B1/04B29D11/00
CPCB29D11/00269G02B1/041G02B3/08
Inventor 付秀君孙刚付浩博刘永慧马义彬冷金英倪晓利黎燕
Owner 北京首耀科技有限公司
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