LIGHT-DIRECTING LENSING MEMBER WITH IMPROVED ANGLED LIGHT DISTRIBUTION

摘要

A light-directing lensing member (10) for off-axial preferential-side distribution of light from a light emitter (20) having an emitter axis (21), including a base end (30) with a perimeter-loop line (32) defining a main plane (13) transverse the emitter axis, and an outer surface (12) configured for refracting light from the emitter in a predominantly off-axis direction toward the preferential side. The outer surface includes a major lens-portion (40) and an axially-located minor lens-portion (50). The major lens portion outer surface (41) has a front region (44) centered on the front side (14), a back region (42) centered on the back side (15), and a middle region (46) around the emitter axis and contiguous with the front and back regions. The minor lens-portion has a surrounding-loop surface (52) extending from the middle region transverse the main plane (13) and terminating at an end surface configured to direct substantially axially-parallel light (27) from the emitter in off-axis direction toward the preferential side.