An endoscope includes a disposable probe and a non-disposable focusing ocular. The probe includes a transfer module assembly including one or more relay modules, and an objective element including a distal glass window, a molded plastic prism and three molded plastic lenses. Each of the relay modules...http://www.google.es/patents/US5341240?utm_source=gb-gplus-sharePatente US5341240 - Disposable endoscope
