| 摘要 |
PROBLEM TO BE SOLVED: To realize sufficient focal accuracy even when contrast of an object is low by properly selecting a visual light video signal and an infrared ray video signal. SOLUTION: An output S1 of a visual light CCD 5 is given to a visual light image signal processing circuit 7, in which a visual light video signal S3 is obtained, and on the other hand, an output S2 of an infrared ray CCD 4 is given to an infrared ray image signal processing circuit 8, in which a infrared ray video signal S4 is obtained and they are fed to a video changeover control section 9 and an automatic focus control means 10. The video changeover control section 9 gives usually the visual light video signal S3 to a view finder 11 and a recorder 12, but when the infrared ray video signal S4 is more effective than the visual light video signal S3, the infrared ray video signal S4 is fed to both or one of the view finder 11 and the recorder 12 automatically. The comparison of the effectiveness of the visual light video signal S3 and the infrared ray video signal S4 is conducted based on a signal C1 from an automatic focus control means 10 and either of the signals is selected. |
