| 摘要 |
<P>PROBLEM TO BE SOLVED: To detect a rotating position without arranging a bored hole for a rotary encoder at a disc frame of a filter turret. <P>SOLUTION: The filter turret 15 is arranged to block a main light path in an endoscope light source part. Filter areas F1-F4 having different spectral transmittances are arranged at the filter turret 15. A light emission part and a light receiving part of a transmission photointerrupter 18 are arranged by sandwiching the filter turret 15. Light with a wavelength area that is not used in endoscope observation is used at the light emission part of the transmission photointerrupter 18. The spectral transmittance of the filter area F1 is selected to transmit the light of the light emission part of the photointerrupter. <P>COPYRIGHT: (C)2012,JPO&INPIT |
