An endoscope has a fiber optic waveguide that transmits an image from a distal end to a proximal end, the waveguide having an outer diameter of less than 3 mm. A lens system is positioned at the distal end of the fiber optic waveguide. An imaging device is optically coupled to the proximal end of fiber...http://www.google.es/patents/US7942814?utm_source=gb-gplus-sharePatente US7942814 - Miniature endoscope with imaging fiber system
