A double-layer concentrating lens based on segmented equal light intensity and its design method

Abstract

The invention discloses a segmental type isocandela-based double-layer condensing lens, comprising a first-layer condensing lens and a second-layer condensing lens, which are horizontally arranged. Each of the first-layer condensing lens and the second-layer condensing lens consists of a plurality of condensing lens which are connected end to end. Both the middle condensing lens of the first-layer condensing lens and the second-layer condensing lens are not provided with female teeth. Inner surfaces of all the condensing lens, expect the middle condensing lens, of the first-layer condensing lens are provided with a plurality of first female teeth, which are used to realize light isocandela and parallel emission of light onto the second-layer condensing lens. Inner surfaces of all the condensing lens, expect the middle condensing lens, of the second-layer condensing lens are provided with a plurality of second female teeth, which are used for generation of isocandela flares by the double-layer condensing lens. The invention also discloses a method for designing the double-layer condensing lens. The invention avoids the defects of non-uniform partial heating of photovoltaic panels, achieves excellent condensing performance and condensing uniformity and good wind-resistant effect, and decreases the frame height of the lens.

Description

technical field [0001] The invention relates to the technical field of condenser lenses, in particular to a segmented equal-intensity double-layer condenser lens and a design method thereof. Background technique [0002] In recent years, with the aggravation of the energy crisis, human beings urgently need a clean energy to alleviate the current energy crisis. However, due to technical limitations, the actual utilization of solar energy, which is a key research, is only half of the world's total power generation. 0.1%, which is equivalent to the total energy (4.3×1020J) that the ground can receive from sunlight for one hour. It can be seen that there is still a huge room for expansion in the utilization of solar energy, and one of the important research tasks in the utilization of solar energy is low-cost solar power generation. Concentrating light can overcome the disadvantage of low solar energy flux density, improve the efficiency of converting solar energy into electric...

AI Technical Summary

Problems solved by technology

However, in today's single-layer Fresnel lens uniform concentrating system, there is a problem that it is only suitable for medium and low magnification concentrating systems and has poor practicability

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