Optical waveguides – With disengagable mechanical connector – Optical fiber to a nonfiber optical device connector
Patent
1995-05-24
1996-12-24
Lee, John D.
Optical waveguides
With disengagable mechanical connector
Optical fiber to a nonfiber optical device connector
385 34, 385 90, G02B 642
Patent
active
055880819
ABSTRACT:
A light coupling device for coupling a light source to an optical fiber. The device includes a first cylindrical sleeve carrying a GRIN lens and a ferrule. The ferrule receives the optical fiber. Movability of the ferrule along the optical axis of a first through-hole in the first sleeve allows a determination of a focal length between the GRIN lens and an incident end face of the optical fiber. A first setting means sets a relative position of the ferrule with respect to the first sleeve for holding the two in position with respect to one another when the GRIN lens and the incident end face of the optical fiber are separated by a distance equal to the focal length therebetween. The device further includes a second cylindrical sleeve. The first sleeve is coaxially disposed within a second through-hole of the second sleeve, and a light source unit is concentrically disposed within the second through-hole. Movability of the first sleeve along the optical axis of the second through-hole allows a determination of a focal length between the light source unit and the GRIN lens. A second setting means is disposed on the second sleeve for setting a relative position of the first sleeve with respect to the second sleeve for holding the two in position with respect to one another when the light source unit and the GRIN lens are separated by a distance equal to the focal length therebetween.
REFERENCES:
patent: H551 (1988-12-01), Chaoui et al.
patent: 4747657 (1988-05-01), Chaoui et al.
patent: 4915470 (1990-04-01), Moore et al.
patent: 5050953 (1991-09-01), Anderson et al.
patent: 5127072 (1992-06-01), Blauvelt et al.
patent: 5257336 (1993-10-01), Dautartas
Lee John D.
Seikoh Giken Co. Ltd.
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