| 摘要 |
PROBLEM TO BE SOLVED: To provide a high temperature furnace wall image pick-up device providing continuous observation of a furnace wall emitting radiation light due to a high temperature in the furnace, through an observation window from a furnace exterior, and providing discrimination of irregularity and cracks by acquiring a furnace wall image having contrast. SOLUTION: The high temperature furnace wall image pick-up device 10 is installed on an outer side of the observation window 2 for remotely carrying out image pick-up the furnace wall 1 emitting radiation light due to a high temperature in the furnace. It is provided with a pulse laser device 12 irradiating an observation portion (a small enough part) of the furnace wall with a pulse laser 4 stronger than the radiation light 3 and having an angle of divergence the same as a minimum angle of visibility, an image pick-up device 14 remotely carrying out image pick-up of an irradiation portion of the pulse laser 14 by the minimum angle of visibility, and a high speed shutter 16 positioned between the image pick-up device and the furnace wall and opening in synchronization with the irradiation time of the pulse laser 4. COPYRIGHT: (C)2008,JPO&INPIT
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