JP2008185731A - A lens filled with liquid, and a solar panel condensing system using the lens. - Google Patents

Abstract

A lens filled with a liquid is provided.
The present invention relates to a lens filled with a liquid useful for a solar panel concentrating system. A transparent fixing cover 208 having a hollow inside is provided. The transparent fixing cover 208 has a shape of a glass convex lens 102 and is filled with a liquid such as water to form the glass convex lens 102. A solar panel 406 is disposed between the glass convex lens 102 and the focal point P of the glass convex lens 102, and solar rays are irradiated onto the solar cell through the glass convex lens 102 to generate a strong light beam and increase electric energy. By using a lens filled with a liquid, the amount of glass used can be reduced and the cost can be reduced.
[Selection] Figure 4

Description

  The present invention relates to a lens filled with a liquid and a solar panel condensing system using the lens.

  Solar power generation using solar panels will be an important energy source in the future, but in order to improve efficiency, the structure of solar cells and the materials used are constantly improved, and the efficiency can be improved by more than 20% Became. At present, in order to increase electric energy, light collection and heat dissipation are important research subjects.

  In Patent Document 1, electric energy is increased by disposing a solar cell in a liquid, immersing it in water, and improving a light collecting state by refraction and internal reflection in the liquid.

  In Patent Document 2, a solar cell is arranged in a liquid, and light is condensed and radiated by the liquid, thereby increasing an output current. Patent Document 3 succeeds in obtaining a coherent light by improving the shape of the solar cell in order to arrange the solar cell in the liquid. In US Pat. No. 6,057,049, solar cells are placed in a liquid, the electrical isolation and the heat conduction structure in the liquid are improved, and replacement and repair are simplified. Patent Document 5 is a solar energy concentrator that uses a Fresnel lens having a facet structure arranged in a storage room for condensing.

FIG. 1 is a diagram showing light collection by a conventional glass convex lens. As shown in FIG. 1, when the glass convex lens 102 condenses, the parallel light beam 104 is condensed through the glass convex lens 102, and the focal point is P. The glass convex lens 102 is heavy and the material cost is very high. Even if it has the effect of heat dissipation and light collection by arranging the solar cell in the liquid, the light collection state is still insufficient. Therefore, there has been a demand for a solar panel condensing structure that increases the light condensing effect, reduces the amount of glass used, reduces the cost, and at the same time reduces the weight of the lens and facilitates mounting.
Taiwan Patent No. 091111913 US Patent Application Publication No. 10 / 154,668 US Patent Application Publication No. 05 / 644,159 US Patent Application Publication No. 05 / 890,935 US Patent Application No. 06 / 559,504 US Patent Application Publication No. 09 / 758,842 JP-A-6-51107

The first object of the present invention is to reduce the amount of glass used and reduce the cost by forming a lens by filling a transparent fixing cover having a hollow lens shape with a liquid such as water. It is an object of the present invention to provide a lens filled with a liquid that reduces the weight of the lens and facilitates mounting, and in particular is filled with a liquid useful for a solar panel light collection system.
The second object of the present invention is to arrange a solar panel between the lens and the focal point of the lens, irradiate the solar cell through the convex lens onto the solar cell, generate a strong light beam, and increase the electrical energy. It is to provide a condensing system.

  To achieve the above object, the present invention provides a lens filled with a liquid. The lens filled with the liquid of the present invention includes a transparent fixed cover having a hollow inside, and the transparent fixed cover has a lens shape and is used for filling the liquid. The material of the transparent fixing cover is glass, transparent plastic, quartz glass, acrylic or the like in order to reduce the weight of the lens. The thickness of the transparent fixed cover is 0.3 mm to 8 mm in order to support weight and external force. The lens may be a convex lens or a lens having other functions such as a concave lens and a prism. The filling liquid in the transparent fixed cover forms a lens, and the filling liquid is water, ethyl alcohol, benzene, ceder oil or carbon disulfide.

  To achieve the above object, the present invention further provides a solar panel light collection system. The solar panel condensing system of the present invention includes a convex lens filled with a liquid and a solar panel. The convex lens filled with the liquid is used for concentrating solar energy on the solar panel. A solar panel is an array of solar cells, and is arranged between a lens and the focal point of the lens, and converts the concentrated solar rays into electrical energy.

The cost reduction, which had been awaited by the conventional technology, was realized by reducing the amount of glass used by forming a lens by filling a liquid, such as water, into a transparent fixed cover with a hollow lens interior. I was able to. At the same time, the lens weight was reduced, making it easier to mount the lens.
In particular, it is effective for convex lenses that require a large area, such as solar panels. If a solar panel is placed between the convex lens and the focal point of the convex lens, and solar rays are irradiated onto the solar cell through the convex lens, the lens of the lens is effective. The weight can be reduced, and the lens can be easily attached to the panel, the light collection effect can be increased, and the electrical energy can be increased.

表１に示すように、ガラスの屈折率に近い充填液体は、ベンゼン、杜松油（ceder oil）または二硫化炭素であるが、コストが高いことおよび環境に与える影響が問題であることがわかる。そのため、充填液体は水を利用することが好ましいと考えられる。 Preferred embodiments of the present invention will be described below with reference to the drawings.
FIG. 2 is a cross-sectional view of a lens filled with a liquid according to an embodiment of the present invention. As shown in FIG. 2, the lens 202 filled with the liquid of the present invention includes a transparent fixing cover 208 having a hollow inside, and the transparent fixing cover 208 has a shape of a lens and is used for filling the liquid. In this embodiment, the lens 202 is a convex lens.
The upper radius of curvature is the first radius R1, and the first center C1 is the center of curvature. The lower radius of curvature is the second radius R2, and the second center C2 is the center of curvature. The lens 202 may be a concave lens or a lens having other functions such as a prism. The material of the transparent fixing cover 208 is glass, transparent plastic, quartz glass, acrylic or the like in order to reduce the weight of the lens. The thickness d of the transparent fixed cover 208 is 0.3 mm to 8 mm in order to support weight and external force. Moreover, if the upper limit is too thick, the weight increases. The filling liquid 210 in the transparent fixed cover 208 forms a lens, and the filling liquid is water, ethyl alcohol, benzene, ceder oil or carbon disulfide. The refractive index of optical glass is 1.51201, and the refractive index of water is 1.344661. The difference in refractive index between the two is small, and the difference can be eliminated by adjusting the radius of curvature. Table 1 shows liquids that can be used as the filling liquid.
(Table 1)

As shown in Table 1, the filling liquid close to the refractive index of glass is benzene, ceder oil or carbon disulfide, but it is understood that the cost is high and the influence on the environment is a problem. . Therefore, it is considered preferable to use water as the filling liquid.

  FIG. 3 is a diagram illustrating the focusing of a lens filled with a liquid according to an embodiment of the present invention. As shown in FIG. 3, when a lens 202 filled with a liquid comprising a transparent fixed cover 208 and a filling liquid 210 collects, the parallel rays 304 form a collection 306 through the lens 202 filled with liquid, the focal point of which is P.

FIG. 4 is a diagram illustrating a solar panel light collecting system according to an embodiment of the present invention. As shown in FIG. 4, a liquid-filled lens 202 comprising a transparent fixed cover 208 and a fill liquid 210 places a solar panel 406 between the liquid-filled lens 202 and the liquid between the focus of the lens. The solar panel 406 allows all the light rays 404 to be received after the sunlight 402 is collected as the light rays 404 through the lens 202 filled with the liquid. As the solar panel 406 gets smaller, it moves away from the filled lens 202 and approaches the focal point P of the lens. On the contrary, as the solar panel 406 becomes larger, it approaches the filled lens 202 and moves away from the focal point P of the lens. The ratio of the area of the filled lens 202 to the area of the solar panel 406 is 2: 1 and the solar panel 406 should be placed between the filled lens 202 and the focal point P of the lens.
As can be seen from this example, the convex lens of the present invention is effective for a convex lens that requires a large area, such as a solar panel, and a solar panel is arranged between the convex lens and the focal point of the convex lens, so If the solar cell is irradiated through the convex lens, the weight of the lens can be reduced, the lens can be easily attached to the panel, the light condensing effect can be increased and the electric energy can be increased, and the lens can be inexpensive. It can be manufactured and is ideal for solar panel condensing systems.

  Although preferred embodiments of the present invention have been disclosed as described above, they are not intended to limit the present invention in any way, and anyone skilled in the art is within the spirit and scope of the present invention. Of course, various changes and modifications can be made.

It is a figure which shows the condensing by the glass convex lens of a prior art. 1 is a cross-sectional view of a lens filled with a liquid according to an embodiment of the present invention. FIG. 6 is a diagram illustrating the focusing of a lens filled with a liquid according to an embodiment of the present invention. 1 is a view showing a solar panel light collecting system according to an embodiment of the present invention.

Explanation of symbols

102 glass convex lens 104 light beam 106 condensing 202 lens 208 filled with liquid transparent fixed cover 210 filling liquid C1 first center C2 second center R1 first radius R2 second radius d thickness 304 parallel light beam 306 condensing P Focus 402 Sun ray 404 Ray 406 Solar panel

Claims (15)

A lens filled with a liquid with a transparent fixed cover having a hollow inside,
The transparent fixing cover has a lens shape and is used to fill a liquid in order to reduce the weight of the lens, and the transparent fixing cover fills the liquid to form a lens. Filled lens.   The lens filled with a liquid according to claim 1, wherein the transparent fixing cover is made of glass.   The lens filled with a liquid according to claim 1, wherein the transparent fixing cover is made of a transparent plastic.   The lens filled with a liquid according to claim 1, wherein the transparent fixing cover is made of quartz glass.   The lens filled with a liquid according to claim 1, wherein the transparent fixing cover is made of acrylic.   The lens filled with liquid according to claim 1, wherein the transparent fixing cover has a thickness of 0.3 mm to 8 mm.   The lens filled with liquid according to claim 1, wherein the lens is a convex lens.   The lens filled with a liquid according to claim 1, wherein the lens is a concave lens.   The lens filled with a liquid according to claim 1, wherein the lens is a prism.   The lens filled with a liquid according to claim 1, wherein the liquid is water.   The lens filled with a liquid according to claim 1, wherein the liquid is ethyl alcohol.   The lens filled with liquid according to claim 1, wherein the liquid is benzene.   The lens filled with liquid according to claim 1, wherein the liquid is juniper oil.   The lens filled with a liquid according to claim 1, wherein the liquid is carbon disulfide. A solar panel condensing system comprising a convex lens filled with liquid and a solar panel,
The convex lens filled with the liquid is used to collect solar energy on the solar panel,
The solar panel comprises solar cells arranged in an array, and is disposed between the lens and the focal point of the lens, and converts the collected solar rays into electrical energy. system.

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