| 摘要 |
PURPOSE:To uniformly radiate the light or the radiation emitted from a luminous source or a radiation source without being intercepted by the luminous source or the radiation source by putting the sectional form of the reflecter covering the cylindrical luminous source, etc., into involute type. CONSTITUTION:A luminous source 5 is covered with a reflector 8, which covers the top and both sides of the cylindrical luminous source 5 such as fluorescent tube, etc., and whose bottom is opened, and whose sectional form is in the shape of an symmetrical involute curve, with one point on the contour circle of the luminous light source 5 as the starting point, and whose straight line connecting both side ends is in the shape of circumscribing the luminous source 5. By the involute shape wherein it becomes x=a(PHI cosPHI-sinPHI) and y=a(PHI sinPHI+cosPHI) to this x axis and y axis, the luminous light from the luminous source 5 is outputted from the opening without being intercepted. What is more, as regards the radiation from a radiation source, it also becomes the same. Among the formula, a shows the radius of the luminous source 5, and PHI the parameter concerned with the invlute curve. |
