| 摘要 |
PURPOSE:To accurately measure the distribution of temperature of the welded part by measuring simultaneously the temperature at plural points of welded points, by gathering the light of welded part to make it monochromatic color through many pin holes. CONSTITUTION:Light from the welded part is passed through the objective lens 10 and after controlling a part in a stop 11, the light of a special wave length is allowed to pass through by an interference filter 12. Then, an image is formed on an image mirror 13. Light which focused image on the image mirror 13 enters each pin hole 14 passing through a light fiber 15. Then, the light is injected to each silicon ptotocell 19. In each silicon photocell 19, photocurrent is generated in proportion to the injected light quantity and this current is converted into the voltage by current/voltage conversion amplifier 20 and is obtained as temperature of brightness of each measuring point. While, a real image on the image mirror 13 is photographed by TV camera 17, then the image is injected on a monitor TV21. |
