| 摘要 |
Infrared camera 5, infrared luminescence equipment 2, and shutter synchronous luminescence drive 7 are arranged in mirror case 6 at the back side of cold mirror 3, infrared luminescence equipment 2 synchronizes with shutter operation of the infrared camera 5 by the shutter synchronous luminescence drive 7, to do intermittent luminescence operation. And clear and exact stable photography picture is obtained without being influenced by disturbance light, without a driver and a fellow passenger who are a photographic subject having sense of incongruity in any way, without making them conscious of existence of an infrared camera also.
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