APPARATUS, METHODS AND ARTICLES OF MANUFACTURE FOR A CO-EXTRUDED LIGHT PIPE

摘要

A light pipe may be used to illuminate an elongated area. Light may emanatelaterally relative to the axis of the light pipe, and the light intensity issubstantiallyuniform along the length of the light pipe. The light pipe may include atranslucentmember and a opaque reflective member that is separated from the translucentmemberby an air gap. A band of reflective material may be located on an exteriorsurface of thetranslucent member. The entire light pipe may be formed by co-extrusion of thetranslucent member, the band of reflective material and the opaque sectionthrough asingle co-extrusion die. Light emitted laterally from the translucent membertoward thearcuate opaque reflective member and band of reflective material may bereflectedlaterally through the translucent member transverse to the axis of the lightpipe, so that alllight extends through the front surface of the translucent member.