Patent ID: 6094517
Filing Date: 2000-07-25
Classification: G02B

Abstract:
An optical-transmission device having an optical axis, comprising:a fiber optic cable having a light-exit face with a predetermined diameter, a cable core, and a cable cladding;a cable-adapter that connects said fiber optic cable to a light-receiving element, said cable-adapter having a frusto-conical shape with a tapered cylindrical surface, a large face and a small end face, said large face having a diameter substantially equal to said predetermined diameter of said light-exit face of said fiber optic cable, the diameter of said tapered cylindrical surface gradually decreasing from said large face towards said small end face along said optical axis, said cable adapter further comprising an adapter core and an adapter cladding, an adapter core/adapter cladding ratio at the small end face being the same as a cable core/cable cladding ratio; anda ferrule that covers at least said light-exit face of said fiber optic cable and said large face of said cable-adapter.