| 摘要 |
PROBLEM TO BE SOLVED: To perform automatic lighting control processing with a high precision by a simple constitution. SOLUTION: In this electronic endoscopic equipment equipped with a videoscope and a processor, one rotary shutter, which is arranged between a lamp and a light guide, is rotated in synchronization with one field period so that a pencil of light can sequentially pass through the transmission part and light shielding part of the rotary shutter. A rotational phase of the rotary shutter is controlled by shifting so that a brightness of a subject image can be kept at a proper level. COPYRIGHT: (C)2007,JPO&INPIT
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