JP2009122400A - Fresnel zone lens with rib structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a Fresnel zone lens with rib structure achieving protection of a Fresnel zone lens, enhancement of structural strength of the entire Fresnel zone lens, simplification of manufacture, reduction of cost, and mass production. <P>SOLUTION: A plurality of ribs in a first direction which are curved downward along both sides of the first direction and a plurality of ribs in a second direction which are curved downward along both sides of the second direction cross with each other to form meshed outside appearance in the rib structure. The Fresnel zone lenses are continuous in an area surrounded by two ribs in the first direction which are adjacent to each other and two ribs in the second direction which are adjacent to each other and cross with the two ribs in the first direction. The ribs are positioned on a first crossing part and a second crossing part, a third crossing part and a fourth crossing part, which are adjacent to each other and are positioned diagonally each other. In the crossing parts, the side parts of the two ribs in the first direction cross the side parts of the two ribs in the second direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a Fresnel Thorn lens with a rib structure, and in particular, the rib structure having a net-like appearance can protect the Fresnel Thorn lens, and can enhance the strength of the entire structure of the Fresnel Thorn lens. By making the smooth surface rough around the frame, it becomes tighter and less likely to fall off when joined to the frame.

Based on the improvement of solar energy power generation system technology and market demand, the types of concentrating modules of concentrating solar energy power generation systems are generally three types: refraction, reflection, and mixed refraction and reflection. Speaking of refractive optical condensing modules, the Fresnel Thorn lens is an optical condensing element widely applied to concentrating solar energy power generation systems.

However, since a general Fresnel Thorn lens is a sheet lens and is thin and light, it is difficult to ensure its flatness when manufactured and used. Since the light efficiency is deteriorated and the diameter of the Fresnel Thorn lens cannot be increased at present, the application range is limited, and the stability of the equipment using the Fresnel Thorn lens is reduced, resulting in consumption. Therefore, it is strongly required by the market to enhance the structural strength of the entire Fresnel Thorn lens. For this reason, general conventional ones are not practical and must be improved.

The main object of the present invention is that each first direction rib curved downward along both sides in the first direction and each second direction rib curved downward along both sides in the second direction, By intersecting each other, a rib structure having a net-like appearance is formed, protecting the Fresnel Thorn lens, and strengthening the overall structural strength of the Fresnel Thorn lens, and at the same time, the ribs on the Fresnel Thorn lens are The present invention provides a Fresnel Thorn lens with a rib structure, which has advantages such as integral molding, simple production, low cost, and easy mass production.

In order to achieve the above-mentioned object, the present invention at least bends along each of the first direction ribs that are curved downward along both sides of the plurality of first directions and is curved down along both sides of the plurality of second directions. This is a Fresnel Thorn lens with a rib structure that is a rib structure having a net-like appearance in which the ribs in the second direction intersect each other. A state in which the Fresnel Thorn lens is continuous in a region surrounded by two adjacent first direction ribs and two adjacent second direction ribs intersecting with the two first direction ribs. And the first and second intersections, the third intersection, and the fourth intersection, which are adjacent to each other and located diagonally. The side part intersects the side part of the ribs in the two second directions. As a result, a new Fresnel Thorn lens with a rib structure is formed.

FIG. 1 is a conceptual diagram of a planar structure of the present invention. As shown, the present invention is a Fresnel Thorn lens with a rib structure, and includes at least a plurality of first direction ribs 11, a plurality of second direction ribs 12, and a Fresnel Thorn lens (Fresnel Zone Lens) 1. As a result, the Fresnel Thorn lens 1 is protected, and at the same time, the structural strength of the entire Fresnel Thorn lens 1 is enhanced.

The Fresnel Thorn lens 1 includes ribs 11 in each first direction that curve downward along both sides in the first direction, and ribs 12 in each second direction that curve downward along both sides in the second direction. It is a Fresnel Thorn lens 1 having a rib structure that crosses each other to form a net-like appearance.

In a region 13 surrounded by two first-direction ribs 11 adjacent to each other and two second-direction ribs 12 crossing the two first-direction ribs 11 and adjacent to each other, The Fresnel Thorn lenses 1 are adjacent to each other in a continuous state, and are positioned on the first and second intersections, the third intersection, and the fourth intersection that are located diagonally to each other. The side portions of the two first direction ribs intersect the side portions of the two second direction ribs, and the periphery of the Fresnel Thorn lens 1 is the first direction rib 11 and the second direction rib. Ribs 12 are formed adjacent to each other. Thereby, a new Fresnel Thorn lens with a rib structure is formed.

FIG. 2 is a conceptual diagram of the three-dimensional structure of the present invention. As shown in the figure, the Fresnel Thorn lens 1 according to the present invention includes a first direction rib 11 along the first direction and a second direction rib 12 along the second direction, and the width of each rib is substantially the same. The same. Each rib is curved downward along both sides thereof. For example, each of the ribs 11a, 11b... 11n in the first direction has side portions 111 and 112, and each of the ribs 12a, 12b. Have side portions 121 and 122, respectively. The two ribs 11a and 11b in the first direction adjacent to each other and the two ribs 12a and 12b in the second direction adjacent to each other are located at the intersections 14a to 14d. Further, the first intersection 14a and the second intersection 14b, the third intersection 14c, and the fourth intersection 14d that are adjacent to each other and diagonal to each other are formed by ribs 11a and 11b in the first direction. Side portions 111 and 112 intersect with the side portions 121 and 122 of the ribs 12a and 12b in the second direction. The first direction ribs 11a and 11b and the second direction ribs 12a and 12b that are adjacent to each other are substantially orthogonal to each other, and the Fresnel Thorn lens 1 is continuous in a region 13 surrounded by the four ribs.

As described above, the present invention is a Fresnel Thorn lens with a rib structure, which can effectively improve the conventional defects, and each of the first direction ribs curved downward along both sides in the first direction, The rib structure in which the second direction ribs curved downward along both sides of the direction intersect with each other to form a net-like appearance can protect the Fresnel Thorn lens, and the structural strength of the entire Fresnel Thorn lens can be increased. At the same time, the ribs on the Fresnel Thorn lens are integrally molded, so that advantages such as easy production, low cost and mass production can be obtained. Therefore, the present invention is more progressive and more practical. And file a patent claim according to the law.

The above are merely preferred embodiments of the present invention, and the present invention is not limited thereby, and equivalent changes and modifications made based on the scope of claims and the description of the present invention. Are all within the scope of the claims of the present invention.

Planar structure conceptual diagram of the present invention Three-dimensional structure conceptual diagram of the present invention

Explanation of symbols

1 Fresnel Thorn Lens 11 First Direction Rib 11a First Direction Rib 11b First Direction Rib 11n First Direction Rib 111 Side 112 Side 12 Second Direction Rib 12a Second Direction Rib 12b Second Direction Rib 12n of the second direction rib 121 side portion 122 side portion 13 region 14a first intersecting portion 14b second intersecting portion 14c third intersecting portion 14d fourth intersecting portion

Claims (8)

A plurality of first direction ribs that curve downward along opposite sides of the first direction;
A plurality of second direction ribs that curve downward along opposite sides of the second direction, intersect with each of the first direction ribs, and surround a region;
A fresnel thorn lens with a rib structure, characterized in that a rib in the first direction and a rib in the second direction are installed above and contains adjacent fresnel thorn lenses that intersect with each other. The first direction ribs and the second direction ribs are formed by intersecting and adjacent to each other, and each of the first and second intersections, the third intersection, The Fresnel Thorn lens with a rib structure according to claim 1, wherein there is a fourth intersection. The rib structure according to claim 2, wherein on the first intersection, two rib sides in the first direction intersect with two rib sides in the second direction. With Fresnel Thorn lens. The rib structure according to claim 2, wherein on the second intersection, two rib sides in the first direction intersect with two rib sides in the second direction. With Fresnel Thorn lens. The rib structure according to claim 2, wherein on the third intersection, two sides of the ribs in the first direction intersect with sides of the two ribs in the second direction. With Fresnel Thorn lens. 3. The rib structure according to claim 2, wherein the side portions of the two ribs in the first direction intersect the side portions of the two ribs in the second direction on the fourth intersection portion. With Fresnel Thorn lens. 2. The Fresnel Thorn lens with a rib structure according to claim 1, wherein the ribs in the first direction and the ribs in the second direction are integrally formed so as to intersect with each other. 2. The rib structure according to claim 1, wherein the ribs in the first direction and the ribs in the second direction are formed so as to intersect with each other, and the Fresnel Thorn lens is continuous in an adjacent region. With Fresnel Thorn lens.