| 摘要 |
PURPOSE:To raise a utilization effect of a light beam, by making the first focuses of I and II confrom among three oval surface reflectors I, II, III, making the second focus of I conform with the first focus of III, making the second focuses of II and III conform, and moreover, making the center of a circular surface reflector conform with the first focuses of I and II, relating to a lighting equipment such as a copying machine, etc. CONSTITUTION:The first focuses P1 of the first and second oval surface reflectors 1, 2 are made to conform with each other, and the second focus P2 of the first oval surface reflector 1 is made to conform with the first focus P2 of the third oval surface reflector 3. Furthermore, the second focuses P3 of the second and third oval surface reflectors 2, 3 are made to conform with each other, also the center P1 of a circular surface reflector 4 is made to conform with a common position P1 by the first focuses of the first and second oval surface reflectors 1, 2, and a lamp light emission part 5 is placed in the center part of the circular surface reflector 4. And, a part of the whole luminous flux which is emitted from the light emission part 5 makes incident to the mirror surface of the first and second oval surface reflectors 1, 2, and the residual luminous flux makes incident to the mirror surface of the circular surface reflector 4, so that the whole luminous flux can be condensed at the second focuses P3 of the second and third oval surface reflectors 2, 3. |
