Abl IP Holding LLC

Acuity Brands, Inc.

Stingray Energy Systems LLC

Nsi Enterprises, Inc.

Carl T Gould

Kevin Franklin Leadford

Christopher J Sorensen

Peter K Nelson

Christopher D Slaughter

John T Mayfield, Iii

Stephen Haight Lydecker

Joshua James Miller

Christopher L Sharp

Zachary A Ingalls

Gary David Trott

Dominic Matthew Large

Alexis Rondeau

Dirk Zylstra

Chris Sorensen

George McIlwraith

Ryan Matthew Walker

Chris Slaughter

David P Ramer

Januk Swarup Aggarwal

Benjamin Marshall Suttles

Douglas Dewayne Grove

Matthew Scott Hoch

Patrick M Tweel

James Patrick Yates

Leslie Charles King

Daniel Edward Sicking

Thomas Edward Harris

Jonas Concepcion

Elías Aurelio Romero Saldívar

Nicholas A Ratliff

Dirk Zhlstra

Joshua Jeremy Miller

Chester G Vier

Scott D Wegner

Ceiling light fixture

Hanging light fixture

A lighting system for a ceiling grid system may provide lighting at a location below the ceiling grid system. The light fixture includes a light source and a support member, and the light fixture may provide diffusely reflected light to a ceiling grid opening. The light fixture may include a wall assembly that is adapted to be moved between a folded configuration and an unfolded configuration.

Light fixture for ceiling grid

A light fixture having a light engine with at least one light source and a shade formed of a light transmissive, pliable material adapted to diffuse light emitted from the at least one light source outwardly from the light fixture. In some embodiments, the light transmissive, pliable material is a fabric material.

Light fixtures with pliable diffuser shade

A lighting system includes first and second component housed within respective first and second housings, and a connector. The first housing defines a first substantially rectangular cross-section that extends from a first end to a second end. The first component is capable of emitting light. The second housing defines a second substantially rectangular cross-section. The second substantially rectangular cross-section extends from a third end to a fourth end. The connector connects the second end with the third end. The connector defines a third substantially rectangular cross-section that is substantially identical to the first and second substantially rectangular cross-sections. The third substantially rectangular cross-section extends along a path from the second end to the third end. The path includes at least one curve of at least fifteen degrees between the second end and the third end, and/or, the substantially rectangular cross-section rotates at least fifteen degrees about the path.

Lighting system with curving or twisting modular housing

A luminaire includes a housing, light-emitting diodes and a light guide. A lateral direction from a top side to a bottom side of the housing is a preferred direction. A front side of the housing forms an aperture. The light guide substantially spans the aperture. In operation, the LEDs emit light toward the preferred direction, which light enters a light coupling surface of the light guide, where it propagates and is substantially retained by total internal reflection. The light guide includes light extraction features to redirect a portion of the light out of total internal reflection, so that some of the light exits the housing through the aperture. The light extraction features redirect some of the light so that more of the light exits the aperture between a normal direction of the light guide and the preferred direction, than between the normal direction and the non-preferred direction.

Lighting devices, systems, and methods are disclosed. One lighting device includes a reflector, first and second groups of light emitters, and a controller. The reflector defines a reflective cavity having an opening and an interior surface including first and second features adapted to reflect light in different manners. The first and second groups of light emitters are positioned to emit light through the reflective cavity toward the first and second features, respectively. The controller is coupled to the first and second groups of light emitters, and is configured to control the first group of emitters to emit light having a first value of a characteristic of emitted light, and control the second group of emitters to emit light having a second value of the characteristic of emitted light different from the first value.

Devices and methods for lighting reflector to visibly emphasize different lighting characteristics of multiple light groups

A dual output downlight luminaire includes a housing that forms at least a first cavity. A partition extends from a portion of the housing and at least partially forms a boundary between the first cavity and an annular second cavity. A first light source emits a first light that is centered about an optical axis and propagates toward a first output aperture. An optic redirects the first light to form a first light beam that exits the luminaire through the first output aperture. A concentrated portion of the first light beam subtends an angle of 60 degrees or less and is centered about the optical axis. A plurality of second light sources, within the second cavity, emit a second light that exits the luminaire through an annular second output aperture. The first and second light sources are independently controllable with respect to each other.

Dual output downlight fixture

A luminaire configured for mounting to a grid ceiling system includes first and second portions. The first portion includes a first housing, one or more first mating elements, and a light engine coupled with the first housing that generates light from electrical power, and is oriented to emit the light away from the first housing. The second portion includes a second housing and one or more second mating elements. The second mating elements are adapted to couple with the first mating elements. At least one of the first portion and the second portion includes an electrical receptacle for receiving the electrical power for the light engine. When the first mating elements couple with the second mating elements, the first housing and the second housing together define a cavity for one or more members of the grid ceiling system.

Lighting fixtures and methods for grid ceiling systems

A light fixture may include a light source and an optical element, such as a light transmissive waveguide and/or a diffuser, having a surface forming a light output surface of the light fixture. The optical element is located to receive light from the source and is configured to supply the light for illumination, via the output surface. In an example of the fixture having a waveguide, the source is coupled to supply light to at least one of the lateral surfaces of the waveguide. At least the output surface of the optical element has a three-dimensional compound curvature and a perimeter that includes two or more edges connected at vertices.

Light fixture using a light waveguide with compound curvature

A light fixture example includes a housing, a light source in the housing and a diffuser. The diffuser is supported by the housing at a distance from the source so as to receive light from the source and diffuse the light for illumination. The diffuser has a three-dimensional compound curvature and a perimeter with at least two edges connected at vertices. Each such edge is a two-dimensional plane curve. The at least two edges are not coplanar with each other. In some examples, a back panel of the housing may have a similar three-dimensional compound curvature and perimeter.

Light fixture with compound curvature, for example, for large format lighting applications

A composite light source includes a plurality of illumination panels, that emit light of a fixed color and a variable luminous intensity. Over time, the luminous intensities of at least two of the illumination panels vary, while a combined luminous intensity of the illumination panels remains about constant. Another composite light source includes a plurality of illumination panels that emit light. Each illumination panel of at least a first subset of the plurality of illumination panels emits the light with a first luminous intensity, and each illumination panel of at least a second subset of the plurality of illumination panels emits the light with a second luminous intensity that is different from the first luminous intensity.

Composite light source systems and methods

A two-component luminaire for illuminating an architectural space includes a housing with a panel that faces the architectural space. A peripheral edge of the housing, having first and second edge segments, forms an output aperture that faces the architectural space. A plane bisecting the output aperture defines a boundary between an indirect lighting region and a direct lighting region. The luminaire includes a primary optical subsystem arranged within the housing so as to be hidden from the direct lighting region by the first panel section, and configured to generate and emit light, through the output aperture, solely into the indirect lighting region, and a secondary optical subsystem, disposed within the housing and configured to generate and emit light through the output aperture.

Recessed luminaire

Embodiments of the invention are directed to wall recessed two-component luminaires. The two components can include a primary optical subsystem and a secondary optical subsystem. The primary optical subsystem can provide indirect lighting, illuminate an architectural space upward toward a ceiling, and/or have greater luminous flux than the secondary optical subsystem. The secondary optical subsystem can provide direct lighting, illuminate an architectural space horizontally and/or downward, provide lit appearance, provide direct view color and/or color gradients, provide direct view luminance and/or luminous gradients, and/or provide lighting for ambience.

Growing community of inventors

Golden, CO, United States of America

Carl T Gould