| 摘要 |
PURPOSE:To enable increase in the number of measuring points for measuring temperature simultaneously, by arranging a plurality of optical fibers at the position where transmission light of one less is received with other ends of the optical fibers facing a infrared sensor separately. CONSTITUTION:One lens 20 is arranged between measuring points and three optical fibers F1-F3. An image is formed at the end face of the optical fiber F1 for the measuring point S1 through the lens 20, on the end face of the optical fiber F2 for the measuring point S2 and on the end face of the optical fiber F3 for the measuring point S3. An infrared sensor is provided at the other ends of the optical fibers F1-F3 and lights from the measuring points enter the sensor to detect the temperature on the basis of the output signal thereof. The number of measuring points can be increased with the same head for an infrared thermometer by increasing the number of optical fibers installed with the occupation calibre of the lens 20 unchanged. |
