Image pickup device by endoscope

Abstract

Abstract PURPOSE:To decrease the influence of a moire fringe effectively even if plural fiber scopes are interchangeably used with one camera by providing a moire preventive filter in the fiber scope. CONSTITUTION:An image guide consists of, for example, fibers of 12mum diameter which are piled to about 2.4mm. overall diameter. Said guide extends from a hard part 1c at the top end, through a curved part 1b, an insertable part 1a and an operation part 1d to an eyepiece part 1g. A camera body part 2b is made freely rotatable with respect to the part 1g. Therefore, the moire fringe is generated by the relation between the arrangement of the photodetector in the SID (static induction type device) of the camera body and the arrangement of the image guide. A moire preventive filter 5 is stuck by means of a fitting 6 to the end face of the guide 4. The image emitting from the guide 4 of a fiber scope 1 is thus formed, via the filter 5, on the solid-state image sensing device 8 of the camera 2 by a photographing lens 7.

Inventors

• 👤 Takeshi Sato
• 👤 健 佐藤
• 👤 Yoshiaki Horikawa
• 👤 嘉明 堀川
• 👤 Yutaka Yunoki
• 👤 裕 柚木
• 👤 Masatoshi Ida
• 👤 井田　正利

Bibliographic Details