Abl IP Holding LLC

Melissa Ricketts

Jie Chen

Yinan Wu

Craig Eugene Marquardt

Robert Michael Ezell

Joel Mikael Petersen

Eric William Teather

Richard H S Bella

Jonathan Lemoine DeBow

Jonathan Lemoine Debow

Joel Mikael Peterson

An area optical cover for a linear light source extends along an axial direction. The optical cover includes a portion of an optical material that forms a constant cross-section transverse to the axial direction. An outer surface of the cross-section is substantially planar, and an inner surface of the cross-section forms a plurality of facets. Each of the facets forms a refractive surface that is configured to refract a corresponding portion of light from the light source, and a return surface that connects the refractive surface with a refractive surface of an adjacent facet. When the outer surface is oriented horizontally on a lower side of the portion of the optical material, and the linear light source is positioned at an installation height above the inner surface, all facets within at least 30 degrees of nadir from the light source are optimized to provide a selected light distribution.

Area optical cover with faceted surface

Optic

An anti-glare refractor for a luminaire may include an optic body having a light entrance side and a light exit side. The optic body may include a material characterized by an index of refraction. The light entrance side may include a substantially flat surface, and the light exit side may include a plurality of prisms each defined by a plurality of facet surfaces. Each facet surface may have a prism slope angle with respect to the substantially flat surface. The prism slope angle may be in a range from about 5 degrees to about 45 degrees.

Anti-glare refractors for luminaires

Optical cover with faceted surface

In one or more embodiments, a luminaire includes a housing, a light source coupled with the housing, an optical sheet coupled with the housing, and a film stabilizer coupled with the housing. The optical sheet includes a first surface and an opposing second surface that are both disposed substantially horizontally when the luminaire is in an installed orientation. The first surface is disposed facing the light source, so that when the light source emits light, the light passes first through the first surface and subsequently through the second surface. The film stabilizer includes a third surface and an opposing fourth surface. The film stabilizer is disposed with the third surface adjacent to the second surface of the optical sheet, and provides mechanical support for the optical sheet.

Systems and methods for stabilizing optical sheets in luminaires

A luminaire may include a light engine comprising a plurality of LEDs arranged in one or more annular rows. The luminaire may include an optic. The optic may include an annular optic body having a light entrance side facing the plurality of LEDs and a light exit side opposite the light entrance side. A plurality of annular grooves may be defined within the light exit side, the plurality of annular grooves being coaxial with the optic body. A plurality of arc-shaped grooves may be defined within the light exit side. Each of the plurality of arc-shaped grooves may be convex relative to a center of the optic. Each of the plurality of arc-shaped grooves may intersect at least one of the plurality of annular grooves. The optic may be configured to produce a Unified Glare Rating of less than 28.

Luminaire with tri-radial optic

An optical cover for a linear light source includes a portion of an optical material that forms a cross-section transverse to an axial direction. The cross-section curves so that its inner surface is substantially concave and its outer surface is substantially convex. The outer surface is substantially smooth, and the inner surface forms facets. Each of the facets refracts light, and connects with an adjacent facet. Each of the facets defines a peak height from the outer surface, and each pair of adjacent facets defines a valley height from the outer surface. The peak heights of all facets exceed the valley heights between adjacent pairs of facets, and the peak height of each selected facet does not exceed twice the valley height between the selected facet and a facet adjacent to the selected facet.

Growing community of inventors

Conyers, GA, United States of America

Melissa Ricketts