| 摘要 |
PURPOSE:To construct an equipment regarded as a spot light source suitable for use under a high temperature by arranging a metalic heat generating body for radiating infrared rays covered with an insulator into a hollow body provided with a means of alignment to a parallel beam at the outlet of a through hole. CONSTITUTION:An infrared rays emitting body in a hollow body 6 with a through hole 7 communicated to the outside is sealed off air with a ceramics. The infrared rays emitted are reflected so many times on a reflection surface 8 as to fill a space 10. The infrared rays are radiated outside from a through hole 7 as a spot light source and makes parallel perfectly with a palaboric mirror 11. A light source regarded as spot light source can be obtained easily with a simple construction to elevate the utilization efficiency in the quantity of light of the light source. A metal heat generating body is sealed off air thereby eliminating deterioration during the use under a high temperature. |
