Non-imaging condenser lens and solar condenser

Abstract

The invention provides a non-imaging condenser lens comprising a flat-shaped transparent body, a conical bulge and a plurality of ring-shaped bulges, wherein the transparent body comprises a first surface and a second surface which are oppositely arranged. The conical bulge is arranged on the first surface. The ring-shaped bulges are arranged on the first surface, surround the centre of a circle of the bottom of the conical bulge and are distributed around the conical bulge in concentric circles, and the cross sections of the ring-shaped bulges, which are vertical to the direction of the first surface, are a plurality of triangles which are adjacently arranged along the ring-shaped bulges and are distributed at both sides of the conical bulge. Light converged by the non-imaging condenser lens is distributed evenly. The invention also provides a solar condenser.

Description

technical field [0001] The invention relates to a non-imaging concentrating lens, in particular to a non-imaging concentrating lens applicable to a solar concentrating device. Background technique [0002] As a new type of energy, solar energy has been paid more and more attention by people. [0003] At present, common solar concentrating devices usually use point-focusing Fresnel lenses to condense sunlight. see figure 1 , this kind of point-focus Fresnel lens 30 comprises a plurality of spherical serrations 31 distributed in concentric circles, because each spherical serration 31 still has a curved surface 32 and a plane 33 similar to a plano-convex lens, so it has the same optical power as a common convex lens. The function of converging to its focal point. Solar energy can be collected by placing a solar panel (not shown) at a proper position before the focal plane of the point-focusing Fresnel lens 30 . [0004] see figure 2 , because the sun is far from the earth...

AI Technical Summary

Problems solved by technology

figure 2 It is clearly shown that the solar spot size d collected by different spherical sawtooth 31 on the L plane 1 、d 2 Different, it can be seen that, during the process of the deflected solar rays entering the focal point O of the point-focus Fresnel lens 30, it is parallel to the focal plane O of the lens. 1 o 2 The light intensity distribution on any plane L is not uniform, so when the solar panel is set on the position of the plane L, the intensity of sunlight received by each place is not uniform, which is not conducive to the full utilization of the solar panel

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