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Topping curved surface condensing lens and manufacturing method thereof

A concentrating lens and a technology of a manufacturing method, which are applied in the field of solar concentrating lenses, can solve problems such as high processing costs, difficult demoulding of molds and lens materials, and difficult process implementation.

Inactive Publication Date: 2010-05-19
SUNTRIX CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the top of the curved Fresnel lens is a curved surface, it is difficult to release the mold and lens material, so it is difficult to realize the process, so the processing cost of the curved Fresnel lens is much higher than that of the flat Fresnel lens

Method used

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  • Topping curved surface condensing lens and manufacturing method thereof
  • Topping curved surface condensing lens and manufacturing method thereof
  • Topping curved surface condensing lens and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the manufacture method of truncated curved surface condenser lens is made according to the following steps:

[0031] Firstly, the mold is formed to form a cone with a truncated hollow surface, and the truncated area 2 is a circular area;

[0032] Then paste the lens film in the top-cut hollow curved surface cone to form the top-cut hollow curved surface Fresnel lens 1;

[0033] molding again to form a planar Fresnel lens 3 with the same size as the topped area 2;

[0034] Finally, the plane Fresnel lens 3 is bonded and fixed to the truncated area 2 of the truncated hollow curved Fresnel lens 1 to form a truncated curved surface condenser lens.

[0035] Pasting lens film refers to pasting the lens film into the hollow curved cone with the truncated top according to the different refractive index and refraction angle of each "teeth" of the curved Fresnel lens. The lens film can choose the lens film produced by 3M Company in the United States. Through this ...

Embodiment 2

[0037] Embodiment 2: The only difference from Embodiment 1 is that the plane Fresnel lens 3 is made by a lens film.

Embodiment 3

[0038] Embodiment 3: the manufacture method of truncated curved surface condenser lens is made according to the following steps:

[0039] First, the mold is molded once to form a truncated hollow curved Fresnel lens 1, and a planar convex lens 4 of the same size as the truncated area 2 is bonded and fixed to the truncated hollow curved Fresnel lens 1 to form a truncated top. Curved condenser lens.

[0040] The truncated curved surface concentrating lens made according to the above method, the lens is composed of a planar convex lens 4 and a truncated hollow curved surface Fresnel lens 1, the truncated top hollow curved surface Fresnel lens 1 is a curved cone shape, and the planar convex lens 4 is bonded A truncated curved surface converging lens is formed in the truncated top region 2 of the truncated hollow curved surface Fresnel lens 1 . In order to ensure the transmission effect of the entire lens, the area of ​​the planar convex lens 4 should be less than 35% of the effec...

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Abstract

The invention discloses a topping curved surface condensing lens and a manufacturing method thereof. The manufacturing method comprises the following steps: firstly, casting a mold to form a topping hollow curved surface cone, and forming a topping hollow curved surface Fresnel lens in the topping hollow curved surface cone; and secondly, adhering and fixing a planar lens having the same size as a topping area to the topping area of the topping hollow curved surface Fresnel lens to form the topping curved surface condensing lens. The planar lens is a convex lens or a planar Fresnel lens. The topping curved surface condensing lens manufactured according to the method not only has the optical advantages of a curved surface Fresnel lens, but also has the advantages of the planar Fresnel lens which is simpler and easier than the curved surface Fresnel lens in processing, so the performance price ratio of the lens is greatly improved.

Description

technical field [0001] The invention relates to the field of solar concentrating lenses, in particular to a truncated curved surface concentrating lens for solar concentrating and a manufacturing method thereof. Background technique [0002] In the 1920s, physicist Fresnel proposed the theory of lens manufacturing: the imaging characteristics of a continuous optical surface mainly depend on the curvature of the surface, while the axial thickness is a secondary factor. In most cases, the increase in thickness It is caused by surface curvature or aperture requirements. Therefore, if the thickness between the two surfaces of the lens is reduced, the optical element can still focus the light on the original thick lens focus. According to the above theory, a plane Fresnel is produced. lens, see attached figure 1 . [0003] The curved Fresnel lens evolved from the plane Fresnel lens (see attached figure 2 ) mainly has two types: one is the tooth surface on the convex surface; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00
Inventor 王士涛
Owner SUNTRIX CO LTD
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