초록 ▼

Compact devices for distributing light from a small area source to evenly light a larger area each comprise a member having a first plurality of surfaces which intercept respective slices of a light beam extending in a first direction and internally reflect the slices to a second substantially perpe

Compact devices for distributing light from a small area source to evenly light a larger area each comprise a member having a first plurality of surfaces which intercept respective slices of a light beam extending in a first direction and internally reflect the slices to a second substantially perpendicular second direction. A second plurality of surfaces intercept respective portions of the slices of light travelling in the second direction and internally reflect those portions generally perpendicularly toward an output surface to evenly light the output surface.

대표청구항 ▼

A light distributor for distributing light received from a source of small area over an output surface of greater area, comprising a transparent member having a first plurality of mutually-parallel surfaces spaced apart from each other in a first direction, spaced adjacent each other in a second dir

A light distributor for distributing light received from a source of small area over an output surface of greater area, comprising a transparent member having a first plurality of mutually-parallel surfaces spaced apart from each other in a first direction, spaced adjacent each other in a second direction perpendicular to said first direction, and extending obliquely to said first direction and in a third direction perpendicular to said first and second directions, so that said surfaces of said first plurality may intercept respective slices of a beam of light applied from said source to said member in said first direction and internally reflect said slices of said beam generally in said second direction, a second plurality of mutually-parallel surfaces spaced apart in said second direction, spaced adjacent each other in said third direction, and extending obliquely to said second direction and in said first direction, so that said surfaces of said second plurality may intercept respective portions of said slices of said beam and internally reflect said portions generally in said third direction substantially perpendicularly onto said output surface, said output surface extending in said first and second directions.