Optical coupling device with ball lens and method for manufactur

Details Optical coupling device with ball lens and method for manufactur Optical coupling device with ball lens and method for manufactur

1996-11-05

1998-06-16

Palmer, Phan T. H.

Optical waveguides

With disengagable mechanical connector

Optical fiber/optical fiber cable termination structure

385 61, 385 74, 385 85, 385 93, G02B 636

Patent

active

057684588

ABSTRACT:
An optical coupling device includes a ferrule that holds an optical fiber; a ball lens that focuses light from the optical fiber upon a point; and a housing that aligns the ferrule and the ball lens. A method for manufacturing such an optical coupling device includes the steps of fabricating a ferrule to support and hold a single-core optical fiber; inserting and fitting the single-core optical fiber into the center of the ferrule; grinding the face of the ferrule holding the single-core optical fiber; fabricating a ball lens whose surface is coated with an anti-reflection film to focus light from the single-core optical fiber on a point; fabricating an integral housing on the basis of a calculation of an offset distance for aligning the ferrule and the ball lens; fixing the ferrule to the inside of the housing; and pushing the ball lens into the housing with a predetermined pressure to fix the ball lens to the inside of the housing.

REFERENCES:
patent: 4781431 (1988-11-01), Wesson et al.
patent: 5432880 (1995-07-01), Diner
patent: 5452389 (1995-09-01), Tonai
patent: 5586208 (1996-12-01), Nishiyama

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