HOPKINS

[ MEDICAL-OPTICAL INSTRUMENTS FOR ENDOSCOPY, ENDOSCOPES, OPTICAL LENS SYSTEMS FOR ENDOSCOPES ] * OPTICAL TELESCOPES AND OPTICAL LENS SYSTEMS AS GENERALLY SHOWN AND DISCLOSED IN UNITED STATES PATENT NO. 3,257,902, AND CHARACTERIZED BY THE INCLUSION IN THEIR OPTICAL PATH OF AT LEAST TWO ROD-LIKE LENSES ARRANGED END TO END AND SEPARATED AXIALLY BY A DISTANCE LESS THAN THE AXIAL LENGTH OF EACH LENS *