| 摘要 |
<p>A floodlight reflector includes a cup bottom and a cup body whose inner wall is formed by a reflecting wall which expands outwards gradually from the edge of the cup bottom. The construction of the reflecting wall is: defining each major parabola y2=2pmx, and obtaining the major parabolic curve surface corresponding to the reflecting wall by stretching one branch of the major parabola around the direction parallel to the surface of the perpendicular rotating axis through the center of the lamp hole or rotating around the rotating axis. A plurality of reflecting concave surface layers are arranged on the reflecting wall, and each reflecting concave surface layer includes a plurality of reflecting concave surfaces which are proximate with each other and have the same shape. Each reflecting concave surface has the construction formed by the following steps: defining a minor parabola y2=2pmsx corresponding to each reflecting concave surface layer of each reflecting wall, forming one reflecting concave surface by rotating the minor parabola around the rotating axis through the peak of the minor parabola, and forming a layer of the reflecting concave surface layer by arraying horizontally the reflecting concave surfaces abutted against each other, with the adjacent reflecting concave surface layers abutted against each other.</p> |
