| 摘要 |
PURPOSE:To realize collection and utilization of a sunbeam, etc. by providing a reflector film at the outer circumference of a transparent substance of glass, plastic, etc. having nearly a funnel shape with a fiber part formed at the bottom. CONSTITUTION:The slope of a curved surface 4 is made to be gradually parallel to the center line for a transparent substance 1 made of glass, plastic or the like material and enclosed with the surface 4 formed nearly into a cone. The termination part of the curved surface is connected consecutively to a fiber part 3. A metallic reflector film of Al, etc. is formed through a vacuum evaporation method, etc. at the outer circumference of the substance 1. Thus the incident light receives a multiplex reflection on the surface 4 and is radiated through the part 3. |
