Endoscopic light source connector

An endoscopic light source connector for connecting an endoscopic light guide in the form of a bundle of fiber optics detachably to a light source, said light guide having a light receiving end portion thereof encased in a rigid pipe and projected from a distal end of a connector casing over a predetermined length to form a light guide rod to be plugged into a socket portion of said light source, characterized in that said socket portion on the side of said light source comprises:

• a rod end holder fixedly mounted on a riser plate within a light source casing for holding a fore end portion of said guide rod, said rod end holder being composed of a fixed tubular casing fixedly mounted on said riser plate in alignment with optical axis of an illumination light path from a source lamp of said light source, and a slide member axially slidably fitted in said tubular casing and internally defining a light guide passage for passing illumination light from said source lamp;
• said light guide passage in said slide member being in the form of an outwardly spread light guide passage having an inside diameter increased continuously or stepwise in an outward direction toward front side of said light source casing to permit connection thereto of various light guide rods of different diameters, and said slide member being constantly urged in an outward direction or in a direction toward a plugged light guide rod by a biasing means.