In a preferred form, this disclosure relates to an end connector for a fiber-optic bundle and to a fiber-optic assembly for transmitting light from a light source to a location remote from the light source. The fiber-optic assembly comprises a lens, a fiber-optic bundle having a surrounding sheath along its longitudinal extent and an end connector which is crimped onto one end portion of the fiber-optic bundle and connected to the lens. The connector is in the form of an axially slit, substantially cylindrical, metal sleeve having a plurality of circumferentially spaced circumferentially elongated slots and with the sleeve along the periphery of the slots having sharp radially inwardly extending burrs which cut into the surrounding sheath of the fiber-optic bundle when the sleeve is crimped thereon.
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