| 摘要 |
An endoscope wherein a rigid insertion sheath (1) is carried on an operating portion (2) and light guide fibres (5) for transmitting illuminating light are fitted internally within the sheath to a light guide connector plug (3) attached to the operating portion (2). The plug (3) is formed of a plurality of members (3b and 3c) to avoid the need for a plating step after the end face of the light guide connector plug (3) is ground optically flat. Illuminating light from an external light source is disconnectably transmitted through a light guide cable to the light guide connector plug (3), and the end faces of the light guide fibres (5) are ground after assembly in the plug (3) so that the illuminating light may be effectively transmitted. If the end surface of the light guide connector plug (3) surrounding the end faces of the light guide fibres (5) is plated, the plating will be peeled off during grinding, and therefore the end surface will require to be plated after the grinding operation. By constructing the plug (3) from a plurality of members (3b and 3c), it is possible to make the part adjacent to the end faces of the light guide fibres (5) of a material which is not plated or need not be plated. |
