Patent ID: 8740778

Claim:
An electronic endoscope system comprising: an insert section to be introduced into a human body; a normal light emitting section for emitting white light to an internal body portion; a special light emitting section for emitting special light to said internal body portion; a first imaging section provided in a distal end portion of said insert section, for capturing a first image of said internal body portion irradiated with said white light; a second imaging section provided in said distal end portion of said insert section, for capturing a second image of said internal body portion irradiated with said special light, said second imaging section having an electron multiplying section for multiplying signal charge that is photoelectrically converted from weak light incident from said internal body portion; a control section for inputting a synchronization signal to said first imaging section and said second imaging timing section at a different timing, such that the input timing of said synchronization signal of said second imaging section is synchronized with the input timing of an electronic shutter pulse of said first imaging section, and such that the input timing of said synchronization signal of said first imaging section is synchronized with the input timing of an electronic shutter pulse of said second imaging section, and thereby setting a charge accumulation period of said first imaging section shorter than one frame period defined as an input interval of said synchronization signal and setting a charge accumulation period of said second imaging section longer than said one frame period; a light splitting section for splitting light incident from said internal body portion and heading said light for said first imaging section and said second imaging section; and a monitor for displaying said first and second images of said internal body portion.