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Roller shutter type Fresnel lens array and light guide energy gathering system

A Fresnel lens and rolling shutter technology, applied in the field of light-guiding and concentrating systems, can solve the problems of large area, inability to rewind the Fresnel lens, difficult maintenance and replacement, etc.

Inactive Publication Date: 2021-05-28
汪强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, in the above-mentioned applications, the required single-piece Fresnel lens has a relatively large area, and its side length can reach about 1 meter; in addition, the current Fresnel lens cannot be made of soft plastic materials
[0024] Since the Fresnel lens is a hard material and the area of ​​a single piece is relatively large, the Fresnel lens cannot be rolled up and the weight is also relatively large. The Fresnel lens cannot be effectively protected in practical applications, and it will be difficult to maintain and protect the Fresnel lens in the later period. more difficult to replace

Method used

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  • Roller shutter type Fresnel lens array and light guide energy gathering system
  • Roller shutter type Fresnel lens array and light guide energy gathering system
  • Roller shutter type Fresnel lens array and light guide energy gathering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This embodiment 1 describes a rolling-type Fresnel lens array to solve the problem that the Fresnel lens cannot be effectively protected due to the large area of ​​a single Fresnel lens in the existing lens array and the difficulty of later maintenance and replacement lack of.

[0061] The rolling Fresnel lens array includes a plurality of Fresnel lens units 1, such as figure 1 (a), figure 1 (b), figure 1 (f) and figure 1 As shown in the dashed box in (g), all Fresnel lens units 1 are arranged in an array as a whole.

[0062] Such as figure 1 (a) the 2×2 array shown, or figure 1 (b) 2×4 array shown. Of course, the above is only exemplary, for example, a 1×2 array, a 2×3 array, a 3×3 array, or even more.

[0063] The structures of the above Fresnel lens units 1 are the same. Take one of the Fresnel lens units 1 as an example:

[0064] Each Fresnel lens unit 1 includes at least two Fresnel lens sheets 2 .

[0065] Wherein, each Fresnel lens sheet 2 is a rectangu...

Embodiment 2

[0119] This embodiment 2 describes a rolling-type Fresnel lens array. Except for the following technical features of the rolling-type Fresnel lens array, which are different from the above-mentioned embodiment 1, other technical features can refer to the above-mentioned embodiment 1. .

[0120] Such as image 3 As shown in (a), an anti-reflection film layer, such as a first anti-reflection film 7 , is provided on the upper surface of the Fresnel lens unit 1 . The first anti-reflection film 7 is attached to the upper surface of the Fresnel lens unit 1 .

[0121] The first anti-reflection coating 7 can reduce reflection, which is equivalent to increasing the intensity of incident light.

[0122] Or the lower surface of the Fresnel lens unit 1 is provided with an anti-reflection film layer, such as the second anti-reflection film 8, such as image 3 (b) shown. The second anti-reflection film 8 is attached to the lower surface of the Fresnel lens unit 2 .

[0123] The second ...

Embodiment 3

[0127] This embodiment 3 describes a rolling-type Fresnel lens array. Except for the following technical features of the rolling-type Fresnel lens array, which are different from the above-mentioned embodiment 1, other technical features can refer to the above-mentioned embodiment 1. .

[0128] Such as Figure 4 As shown, an anti-infrared membrane layer, such as an infrared-resistant membrane 9 , is provided on the upper surface of the Fresnel lens unit 1 .

[0129] When there is no need to increase heat in summer, by setting one deck of infrared-proof diaphragm 9, most (more than 80%) of infrared light can be cut off, thereby reducing heat conduction, helping to reduce indoor temperature and preventing local overheating.

[0130] Certainly, heat is needed during heating in winter, and at this moment, this layer of anti-infrared diaphragm 9 may not be provided.

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Abstract

The invention discloses a roller shutter type Fresnel lens array and a light guide energy gathering system. The roller shutter type Fresnel lens array comprises a plurality of Fresnel lens units, and all the Fresnel lens units are integrally arranged in an array mode; each Fresnel lens unit comprises at least two Fresnel lens sheets; all the Fresnel lens sheets are rectangular lens sheets and are arranged along the same direction; the Fresnel lens sheets in the same Fresnel lens unit are sequentially connected through ropes to form a roller shutter type structure. The adjacent Fresnel lens sheets in every two adjacent Fresnel lens units are connected through a rope. The roller shutter type Fresnel lens array can be rolled up and unfolded, and protection, maintenance and replacement of the Fresnel lens units in the lens array are facilitated. The light guide energy gathering system is based on the Fresnel lens array and can be applied to indoor places where lighting is insufficient or lighting cannot be conducted directly.

Description

technical field [0001] The invention belongs to the technical field of renewable energy utilization, and in particular relates to a rolling-type Fresnel lens array and a light-guiding and energy-concentrating system based on the rolling-type Fresnel lens array. Background technique [0002] At present, for some indoor places with insufficient lighting or no direct lighting, such as classrooms, offices, meeting rooms, underground shopping malls, and subsea tunnels, most of them use lamps for lighting, which consumes a lot of electric energy. [0003] In addition, the above lighting methods will generate a large amount of carbon emissions, which is not conducive to carbon neutrality. [0004] It is mentioned in the architectural lighting design standard GB50033-2013 that natural light is clean energy, inexhaustible, and has great potential for energy saving. At present, lighting electricity consumption accounts for about 20% of the total electricity consumption worldwide. %ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B3/00G02B3/08G02B19/00
CPCG02B3/0037G02B3/08G02B19/0009G02B19/0042
Inventor 姚娅利汪强
Owner 汪强
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