Unlock instant, AI-driven research and patent intelligence for your innovation.

Uniformly-converging Fresnel lens

A Fresnel lens and uniform convergence technology, which is applied in the field of Fresnel lenses, can solve the problems of uneven light concentration distribution on the battery surface, increased battery series resistance loss, and decreased battery conversion efficiency, etc., to achieve uniform light intensity distribution performance, prolong service life, and improve energy utilization

Inactive Publication Date: 2012-08-22
刘永强
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the traditional Fresnel lens is used for concentrating light, the concentration of light on the surface of the battery is uneven, which leads to the increase of the internal series resistance loss of the battery, the decrease of the conversion efficiency of the battery, and the impact on the life of the battery, and further proposes a uniform converging Fresnel lens Lens

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Uniformly-converging Fresnel lens
  • Uniformly-converging Fresnel lens
  • Uniformly-converging Fresnel lens

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, a kind of homogeneous converging Fresnel lens described in this embodiment comprises mirror body 1 and transparent body 2, and mirror body 1 is the square mirror body that is spliced ​​into by four square mirror bodies 3 of the same size and shape 1. The lower surface of the transparent body 2 is fixedly connected with the upper surface of the mirror body 1, and the corner of the lower surface of each square mirror body 3 near the center of the lower surface of the mirror body 1 is provided with a triangular pyramid-shaped protrusion 3-1, each A square sub-mirror body 3 lower surfaces are parallelly provided with multiple rows of strip-shaped protrusions 3-2 with triangular cross-sections, and the triangular pyramid-shaped protrusions 3-1 on the lower surface of each square sub-mirror body 3 are connected with the other three. The triangular pyramid-shaped protrusions 3-1 on each...

specific Embodiment approach 2

[0010] Specific implementation mode two: combination figure 1 and figure 2 To illustrate this embodiment, the transparent body 2 of a uniform converging Fresnel lens in this embodiment is a square transparent flat plate with the same size and shape as the square mirror body 1 . Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0011] Specific implementation mode three: combination figure 2 To illustrate this embodiment, the heights of the rows of strip-shaped protrusions 3 - 2 on each square mirror body 3 of a uniform converging Fresnel lens in this embodiment gradually decrease from outside to inside. Other components and connections are the same as those in the first embodiment.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a Fresnel lens and particularly relates to a uniformly-converging Fresnel lens. When the traditional Fresnel lens is used for converging light, the light convergence on the surface of a battery is not uniform, resulting in the problems that the loss of series resistors in the battery is increased, the conversion efficiency of the battery is reduced and the service life of the battery is influenced; and through adoption of the uniformly-converging Fresnel lens, the problems can be overcome. The uniformly-converging Fresnel lens is characterized in that the lower surface of a transparent body is fixedly connected with the upper surface of a lens body to form a whole body; a triangular pyramid bulge is arranged at one corner of the lower surface of each square sub-lens body, which is close to the center of the lower surface of the lens body; a plurality of rows of strip-shaped bulges with triangular cross sections are arranged on the lower surface of each square sub-lens body in parallel; the triangular pyramid bulge on the lower surface of each square sub-lens body and the triangular pyramid bulges of the other three square sub-lens bodies are spliced to form a pyramid-shaped bulge; and each strip-shaped bulge of each square sub-lens body and the strip-shaped bulges at the corresponding positions of the other three square sub-lens bodies form a four-edge frame body. The uniformly-converging Fresnel lens is used for a solar energy field.

Description

technical field [0001] The invention relates to a Fresnel lens, in particular to a uniform converging Fresnel lens. Background technique [0002] Traditional energy is on the verge of exhaustion, and energy problems are becoming more and more prominent. Solar energy has attracted much attention for its unique advantages of abundant reserves, wide distribution, green and pollution-free. In the field of solar energy applications, photovoltaic power generation technology has a good development prospect. [0003] Concentrating photovoltaics is the third generation photovoltaic system, which partially replaces expensive solar cells with relatively cheap concentrators, improves system conversion efficiency and reduces system costs. Concentrating photovoltaic systems have obvious advantages, but there are still some problems that need to be solved. For example, the use of traditional Fresnel lenses for concentrating light and uneven distribution of light on the surface of the batt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02B3/08H01L31/052H01L31/055
CPCY02E10/50
Inventor 刘永强
Owner 刘永强