TWI452350B - Combined fresnel lens - Google Patents

Description

Combined fennel lens

The present invention relates to a combined Finnel lens, and more particularly to a structure in which a complex planar lens is bonded to an arc-shaped frame and assembled into a curved type of a Fresnel lens.

With the increasing shortage of energy and environmental pollution caused by fossil fuels, green alternative energy has been attracting many researchers to research and development, and researchers agree that direct use of solar energy will be a trend in energy development, because the energy sources on the planet are all in one. Directly or indirectly from solar energy, the energy available for direct extraction from solar energy will be the most economical and environmentally friendly source of energy.

There are many types of solar concentrating and collecting concentrators, and one of the solar concentrating and collecting concentrators is the effect of concentrating and collecting heat by using a fennel lens, for example, the concentrating light disclosed in the Republic of China new patent No. M394441 Solar module."

The former case uses a curved type of Fresnel lens, but the curved type of Fresnel lens has the disadvantage of not being able to form the microstructure on its curved surface, especially the curved surface type of the larger area. Neil lenses are more difficult to form.

Therefore, in order to solve the problem that the curved type of the Fresnel lens is not easy to form the microstructure, and the large-area curved type Fresnel lens is difficult to manufacture, the present invention A combined Finnel lens is proposed.

The invention comprises: a plurality of planar lenses; a frame comprising a plurality of interconnected struts, the plurality of struts enclosing an arcuate curved surface, and an assembly portion is formed inside the plurality of struts, the plurality of planar lenses Assembled in the assembly portion, and the plurality of planar lenses are provided with a microstructure of a Finn lens, and the assembled planar lens forms a focus focus on the cross section of the curved curved surface, so that the solar energy collecting unit can be disposed at Focus on the focus to achieve the effect of collecting light.

Further, the plurality of planar lenses are arranged symmetrically and gradually inclined from the center on the cross section of the curved curved surface, and the connection between the adjacent point of the complex planar lens and the focal focus and the progressively inclined planar lens are The angle of intersection between 80 and 110 degrees, and preferably at an angle of 90 degrees.

Further, the plurality of planar lenses have a long rectangular shape and are juxtaposed adjacent to each other on the frame; or the plurality of planar lenses have a rectangular shape and are arranged in an adjacent matrix on the frame.

Further, the plurality of struts each include an upper rod member, a lower rod member and a locking member for engaging the upper rod member and the lower rod member, the upper rod member extending a pressing portion, and the pressing portion and the pressing portion Forming a slot between the lower rods, respectively inserting the plurality of plane lenses into the slots of the plurality of rods, and pressing the upper rod member and the lower rod member with the locking member to make the plurality of rods The pressing portion of the upper rod press-fits the plurality of planar lenses in the vacant slots of the plurality of struts.

The invention has the following effects:

1. Planar lenses are easier to manufacture and more convenient to form microstructures on planar lenses, so manufacturing costs are lower.

2. Using a plurality of unit flat lenses, it is possible to assemble a curved type Fresnel lens of any desired area.

3. A plurality of unit flat lenses with small area are not easy to damage the plane lens during transportation, and are convenient to transport.

(1)‧‧‧planar lens

(11)‧‧‧Microstructure

(2) ‧ ‧ ‧ frame

(21)‧‧‧ poles

(211)‧‧‧Upper members

(2111) ‧‧‧ Pressure Department

(212)‧‧‧Lower parts

(213)‧‧‧Locking parts

(214) ‧ ‧ lacking slots

(22)‧‧‧Assembly Department

(A) ‧ ‧ focus focus

(B) ‧‧‧ bracket

(C) ‧‧‧Energy Unit

The first figure is a perspective view of the first embodiment of the present invention.

The second drawing is a schematic view of the assembled and used state of the first embodiment of the present invention.

The third figure is a perspective view of the second embodiment of the present invention.

In combination with the above technical features, the main effects of the combined fennel lens of the present invention can be clearly exhibited in the following embodiments.

Referring to the first embodiment and the second figure, the first embodiment of the present invention includes: a complex planar lens (1) having a long rectangular shape, and a microscopic lens is disposed on the complex planar lens (1). Structure (11); a body (2) comprising a plurality of struts (21) connected vertically and horizontally, the plurality of struts (21) enclosing an arcuate curved surface, and an assembly is formed inside the plurality of struts (21) a portion (22), the complex planar lens (1) is assembled on the assembly portion (22), and is fixed between the plurality of struts (21) such that the plurality of planar lenses (1) are in the frame (2) The laterally adjacent sideways juxtaposed, and the assembled planar lens (1) forms a focus focus (A) on the cross section of the transverse curved surface, the complex planar lens (1) being centered on the section of the curved curved surface Arranging in a symmetrical and gradually inclined arrangement, and the line connecting the adjacent point of the complex plane lens (1) to the focus focus (A) and the progressively inclined plane lens (1) are between 8 degrees and 110 degrees. The angle of intersection, preferably 90 degrees, as shown in the second figure Wherein the aforementioned angle of intersection of 90 degrees means that the line connecting the adjacent focus of the plane lens (1) and the focus focus (A) is at an angle of 90 degrees with the plane lens (1) having a large slope of inclination, and is also in the frame body (2) ) extending a bracket (B), and using the bracket (B) to connect an energy collecting unit (C) to the focusing focus (A), which can be used for solar concentrating and collecting heat, for example, connecting a vacuum tube or Energy collecting unit (C) such as a heat generating unit.

Referring to the second figure, the plurality of struts (21) each include an upper rod member (211), a lower rod member (212) and a locking member (213) that locks the upper rod member (211) and the lower portion. a rod member (212), the upper rod member (211) extends with a pressing portion (2111), and a notch (214) is formed between the pressing portion (2111) and the lower rod member (212), The plurality of planar lenses (1) are respectively placed in the notches (214) of the plurality of struts (21), and the upper member (211) and the lower member (212) are pressed by the locking member (213), so that The pressing portion (2111) press-fits the plurality of planar lenses (1) in the notches (214) of the plurality of struts (21).

The invention uses the planar lens (1), is easier to manufacture, and is more convenient to mold the microstructure (11) on the planar lens (1), so the manufacturing cost is lower, and the advantages of quick assembly are facilitated, and the transportation is more convenient. And the flat lens (1) is not easily damaged during transportation.

Referring to the third embodiment of the present invention, the plurality of planar lenses (1) are rectangular and arranged in an adjacent matrix in the longitudinal and lateral directions of the plurality of frames (2), so that the user can According to the demand, the number of unit plane lenses (1) is increased or decreased, and assembled into an arbitrary size area.

In view of the above description of the embodiments, the operation, the use and the effects of the present invention can be fully understood, but the above embodiments are merely preferred. The scope of the invention is to be construed as being limited by the scope of the invention and the scope of the invention.

(1)‧‧‧planar lens

(21)‧‧‧ poles

(2) ‧ ‧ ‧ frame

(22)‧‧‧Assembly Department

(B) ‧‧‧ bracket

(C) ‧‧‧Energy Unit

Claims (6)

A combined fennel lens comprises: a plurality of planar lenses; a frame comprising a plurality of interconnected struts, the plurality of struts enclosing an arcuate curved surface, and an assembly portion is formed inside the plurality of struts The complex planar lens is assembled to the assembly portion, and the assembled planar lens forms a focus focus on the cross section of the curved curved surface, and the complex planar lens is symmetrical and progressive from the center on the cross section of the curved curved surface. The oblique arrangement is such that the line connecting the focal plane adjacent to the focus plane and the progressively inclined plane lens are at an angle of intersection between 80 degrees and 110 degrees. The combined flat lens according to claim 1, wherein the complex planar lens is provided with a microstructure of a Fresnel lens. The combined type Finnel lens of claim 1, wherein the connection between the adjacent plane lens and the focus focus is at an angle of 90 degrees to the progressively inclined plane lens. The combined type Finnel lens of claim 1, wherein the plurality of planar lenses have a long rectangular shape and are juxtaposed adjacent to each other on the frame. The combined type Finnel lens of claim 1, wherein the plurality of planar lenses are rectangular and arranged in an adjacent matrix on the frame. The combined type Finnel lens of claim 1, wherein the plurality of struts each comprise an upper rod member, a lower rod member and a locking member for engaging the upper rod member and the lower rod member, wherein the upper rod member The rod member has a pressing portion extending therebetween, and a notch is formed between the pressing portion and the lower rod member, and the plurality of planar lenses are respectively placed in the missing slots of the plurality of supporting rods. The upper rod member and the lower rod member are pressed by the locking member, so that the pressing portion of the rod member above the plurality of rods presses and fixes the plurality of plane lenses in the notch of the plurality of rods.