Low angle, dual port light coupling arrangement

Details Low angle, dual port light coupling arrangement Low angle, dual port light coupling arrangement

1996-02-27

1998-10-27

Cariaso, Alan

Illumination

Revolving

362299, 362302, 362346, F21V 1312

Patent

active

058269630

ABSTRACT:
A compact coupling arrangement between a light source and a plurality of light distribution harnesses includes a plurality of reflector members arranged around the light source with respective focal points of the reflector members positioned substantially coincident with the light source, so as to receive light from the source and reflect the light away from the source. Further included is a plurality of light coupling members, each having an inlet and an outlet surface for receiving light originating from the light source and transmitting light, respectively. A plurality of light distribution harnesses is provided for respectively receiving light from the light coupling members. The light coupling members each comprise a lens having a negative curvature in at least one direction generally transverse to a main light transmission axis therethrough, for receiving light at a first angular distribution and transmitting light at a reduced angular distribution. To facilitate manufacturing, at least one of the light coupling members may comprise an integral portion of one of the reflector members coinciding with the curvature of a proximate reflector member. Further, at least one of the inlet and outlet surfaces of one of the coupling members maybe non-axisymmetrical about the main light transmission axis of its associated coupling member, for improving efficiency of light coupling.

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Davenport et al., "An Improved Optical Coupling Arrangement Between a Lamp and a Light Guide," co-pending application serial No. 08/116,146 (attorney docket no. LD 10304), filed Sep. 2, 1993, cited at p. 1 of the present specification.
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