| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an inexpensive tracking type beam condensing unit that is constituted by installing many small-sized condenser lenses with large acceptance angles and combining a simple moving mechanism, and can be installed on the roof of a general Japanese style house. <P>SOLUTION: The tracking type beam condensing unit consists of a compound condenser lens and a moving mechanism. The compound condenser lens includes, in the upper part, a Fresnel lens 1 converging the sunshine incident from above downward, in the inside, an internal condenser lens 2 converging the light beam incident from the upper Fresnel lens 1 and projecting it from its lower end inside, a lens cover 3 having a reflecting film 3a on its internal surface to reflect the light beam transmitted through the internal condenser lens and protecting it outside the internal condenser lens 2, and a lower condenser lens 4 receiving the incident light beam on its top surface, totally reflecting and converging the beam inside, and exiting the beam from its reverse surface below the above condenser lenses. The moving mechanism includes: an x-axial column a5 and an x-axial column b6 in an (x) direction, and a y-axial column a7 and a y-axial column b8 in a (y) direction as axial columns which are attached to the lens cover 3, support the weight of the compound condenser lens and rotate the compound condenser lens toward the sun; and a control rod 9 controlling the quantities of x-axial and y-axial rotations. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
