Patent ID: 6179483
Filing Date: 2001-01-30
Classification: G02B

Abstract:
A coupling apparatus for a light emitting element and an optical fiber, for coupling a holder, to which said light emitting element and a coupling lens are secured, with said optical fiber; said coupling apparatus comprising:a ferrule which holds said optical fiber and is inclined at a predetermined angle with respect to the optical axis of said coupling lens; and,a support member which is secured to a lens holder and which holds said ferrule so as to enable the ferrule to be movable in a direction parallel with the optical axis of said coupling lens said support member comprises:an adjustable ring which is movable and adjustable in a plane perpendicular to the optical axis of said coupling lens and which can be secured to said lens holder;a ferrule ring supported within said adjusting ring wherein said ferrule ring is movable in a direction parallel with the optical axis of said coupling lens; anda ferrule holder which is detachably press-fitted in said ferrule ring so as to move the same in a direction parallel with the optical axis of said coupling lens;wherein said ferrule is held by said ferrule holder at an inclined position with respect to the optical axis and which is movable together with said ferrule holder in a direction parallel with the optical axis.