Optical waveguides – With optical coupler – Particular coupling structure
Patent
1992-03-27
1994-08-23
Bovernick, Rodney B.
Optical waveguides
With optical coupler
Particular coupling structure
385 42, 385 89, 385 93, G02B 626
Patent
active
053414454
ABSTRACT:
An optical coupling assembly is useful for coupling a source of light, having high brightness and being non-coherent and focussed at a focal plane, to a plurality of optical light conductors. The coupling assembly includes an elongated light transmissive coupling member which has a central longitudinal axis and is disposed between the focal plane of the light source and leading ends of the optical light conductors. The elongated coupling member is any one of a limited number of different polygonal cross-sectional shapes. Also, the coupling member can have either a hollow tubular or a solid configuration. The hollow tubular member is coated with a highly reflective material. In one embodiment, the polygonal cross-sectional shape of the coupling member remains constant along the entire axial length of the coupling member. In another embodiment, the polygonal cross-sectional shape of the coupling member remains constant at a pair of front and rear end portions and at a middle portion disposed between them and decreases and increases along the axial length of the coupling member at front and rear transitional portions respectively disposed between the front end portion and the middle portion and between the middle portion and the rear end portion of the coupling member. The front and rear transitional portions can vary either linearly or non-linearly along their axial lengths.
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Davenport John M.
Hansler Richard L.
Bovernick Rodney B.
Corwin Stanley C.
General Electric Company
Hawranko George E.
Sanghavi Hemang
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