Rambus Delaware LLC

Dane A Sahlhoff

Kurt Starkey

Greg Coghlan

Todd Winski

A light guide includes opposed major surfaces and a light input edge extending therebetween. An array of micro-optical elements of well-defined shape at at least one of the opposed major surfaces corresponds to the light input edge. Each of the micro-optical elements in the array includes a longitudinal axis arranged within the range of angles relative to the light input edge. A path linearly extending along the light guide from the light input edge intersects at least a portion of the micro-optical elements in the array, at least one of the micro-optical elements along the path arranged with its longitudinal axis at a positive angle relative to the light input edge, and at least another one of the micro-optical elements along the path arranged with its longitudinal axis at a negative angle relative to the light input edge.

Light guide and lighting assembly with array of rotated micro-optical elements

A light guide includes a first major surface; a second major surface opposed the first major surface and spaced apart from the first major surface in a thickness direction; a light input edge extending between the major surfaces; and light extracting elements at the first major surface. In some embodiments, at least a portion of the light extracting elements each include: a proximal end at the first major surface and a distal end in the thickness direction; and first and second surfaces, the first surface being a side surface extending between the proximal end and the distal end and having a curvature about a direction extending in a plane parallel to the first major surface. In some embodiments, the major surface of the light guide is curved and the first surface has a curvature about a direction extending along a surface contour of the first major surface.

Micro-optical element having surface with curvature about a direction extending in a plane parallel to major surface of light guide, and light guide and lighting assembly including same

A cover element for use in a lighting assembly that includes an edge-lit light guide. The cover element includes a first major surface through which light output by the light guide enters the cover element, the light including light propagating at high angles relative to normal to the first major surface of the cover element. The cover element also includes a second major surface opposed to the first major surface and having optical elements that each have plural surfaces arranged relative one another so that the optical element redirects high angle light incident on any one of the surfaces of the optical element and travelling in a direction with any vector component orthogonal to the normal to have a reduced angle in the normal direction as the light exits the cover element through the optical element.

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Strongsville, OH, United States of America

Dane A Sahlhoff