| 摘要 |
PURPOSE: A lens of solar heat system is provided to manufacture a lens constructing a condensing part without difficulty as well as to be manufactured comparatively on a large scale, thereby reducing the cost of installation, but on the other hand improving a concentration efficiency. CONSTITUTION: A lens(10) incorporating in a condensation part of a solar heat system for condensing a solar light includes a first and a second surfaces(11,12), At least one(11) of the sides is formed in the form of flat plane. The other side(12) is designed with a discontinuous surface in such a way that the discontinuous surface is formed in the form of steps with gradually decreasing its height from one side to the other side of the lens(10).
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