An optical image is formed on one end surface of an image guide formed Of a fiber bundle by an objective optical system provided in a tip section at the tip of an elongate insertable section, is transmitted to the other end surface and is photoelectrically converted by an imaging device together with...http://www.google.fr/patents/US5257100?utm_source=gb-gplus-shareBrevet US5257100 - Apparatus for reducing network patterns from the image of a fiber scope
Apparatus for reducing network patterns from the image of a fiber scope
