| 摘要 |
PROBLEM TO BE SOLVED: To enable using of an AC lighting lamp by making the number of times of lighting and a light emitting amount within same shutter time uniform and thereby eliminating a flicker. SOLUTION: An endoscope device comprises a CCD drive/signal processing circuit 21 for executing a sweeping control of a stored charge of a CCD 14 as an electronic shutter control, and a lighting drive circuit 28 for controlling lighting of the AC lighting lamp 27. The drive circuit 28 generates a lighting drive pulse of a rapid frequency of 8 kHz in which the fastest time of the electronic shutter control such as, for example, lighting of four (even number) times are executed within 1/4000 s, is generated, an AC power is supplied to the lamp 27 by the rapid pulse. According to this, since lighting of many times are executed even within a short shutter time, even if the number of times of lighting is different, its influence becomes small, and the light emitting amount is made uniform. The lighting by both the electrodes is always conducted at the fastest shutter speed.
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