Abstract: Field configurable lighting assemblies integrated within a ceiling grid system are provided which are easy to assemble onsite as part of the installation process to deliver lighting distributions tailored to optimally illuminate surface ceiling panels as well as floors, walls and work surfaces below. The configurable assemblies comprises both ceiling grid components such as T-bars and ceiling panels as well as novel linear lighting modules, linear support elements, and reflectors which in some embodiments can be efficiently stacked in storage and transport to installation sites as an installation kit.

Abstract: An optical element with light scattering properties is configured for use in a light fixture or lighting module. When used in combination with a reflector or reflective surface proximate to an output face, the optical element can provide a range of non-Lambertian light distributions in alternative embodiments. The optical element utilizes combinations of dispersed light scattering particles and/or surface features to selectively scatter, disperse and internally reflect light. Using such optical arrangements it is possible to create light distributions with a single or multiple lobes or peak intensities and to control the position and shape of light distributions. The optical element is particularly suitable in low profile edge lit lighting assemblies used in indoor lighting products such as suspended, surface or recessed mounted linear light fixtures, ceiling mounted downlights, cove lights, and light fixtures for wall washing or perimeter lighting.

Abstract: A light fixture with edgelit optical element is configured with an elongate body which retains and aligns optical components in a shallow linear form factor. Embodiments can be installed within a ceiling grid system and provide a fixture height less than that of a ceiling grid T-bar. An edglit optical element with light scattering features produces an extended emitting area for low glare and provides light distributions such as asymmetric and symmetric batwing distributions particularly useful in downlighting and other lighting applications.

Abstract: A light fixture controls lighting distributions with one or more electrically addressable LED boards and a primary optical element which can be back-lit or edge-lit. The light fixture body is configurable, comprising a 3-dimensional housing body with ends that can be cut at a configured angles to create geometric patterns within a ceiling grid installation. The housing body comprises features to retain and align LED boards and the primary optical element. Edge-lit configurations can enable the lighting assembly height to be less than the height of a ceiling grid T-bar. In some embodiments the lighting assembly can also provide structural support within an installed panel system and replace one or more T-bars. The light fixture can be configured to provide low-glare or wide spread “batwing” ambient light or more directional wall wash, task and accent lighting.

Abstract: An edgelit lighting assembly provides two or more adjustable light distributions with two or more electrically addressable light source channels. At least one light source channel inputs into an edge face of a primary transmissive optical element. Specific embodiments include a double edgelit configuration and configurations with both edgelit and direct lit light source channels. An optional auxiliary optical element provides additional light distribution control and improved brightness uniformity and visual appearance.

Abstract: A multifunctional lighting assembly is configured with optical components such as lenses and reflectors mounted within an elongate body that serves as a cross tee within a T-bar grid arrangement. Protrusions of the elongate body are used to position optical components and embodiments provide for the slidable mounting of optical components. Further embodiments provide for the support of ceiling panels within a suspended ceiling system, connection to a structural ceiling, and inclusion of further components such as sensors, electronic controllers, and wireless modules.

Abstract: A light fixture delivering electrically controlled lighting distributions for mounting within an installed panel system typically used in ceiling and wall constructions and incorporating acoustic, drywall or wood panels. The light fixture can provide low-glare or wide spread “batwing” ambient light or more directional wall wash, task and accent lighting. The light fixture comprises one or more LED boards and an optical element which can be back-lit or edge-lit. The light fixture body is configurable, comprising a 3-dimensional extruded elongate body with its ends cut at a configured angle. The body typically comprises additional side support features that support and enclose the edge of installed panels. In the case of a T-bar based ceiling grid system the side support features may also replicate the function and appearance of T-bar horizontal and vertical portions. The body comprises features to retain and align LED boards, reflectors and a back-lit or edge-lit optical element.

Abstract: A lighting assembly includes at least one light source array provided in a housing and a light scattering primary transmissive optical element having at least one focal region positioned substantially parallel or concentric with the light source array. Lens features of the optical element may include a Fresnel lens pattern to produce at least one focal region. An auxiliary transmissive optical element may be provided to further control light distribution and brightness uniformity.

Abstract: An edgelit multifunctional lighting assembly is configured as a cross tee within a suspended ceiling system and supports at least one ceiling panel and is configurable to produce symmetric and asymmetric targeted light distributions for narrow and wide angle illumination applications.

Abstract: A ceiling grid lighting assembly for use in suspended ceiling systems is provided with multiple linear lighting modules in parallel arrangement. End plates are used to connect, support, and enclose longitudinal ends of the elongate body of each linear lighting modules while simultaneously functioning as reflective faces for optical cavities. A configured gap spacing between individual linear lighting modules can be used to house and support components such as additional light sources, acoustic or decorative panels, HVAC components, or power systems, controls or sensors. The end plate can also be configured to allow a T-bar to be placed in the configured gap spacing thereby enabling the mounting of the assembly in-line upon the longitudinal axis of a ceiling grid T-bar. Embodiments of linear lighting modules are presented comprising LED light sources, light guides and diffusers housed within the elongate body.

Abstract: Various light fixtures are provided for mounting within and below suspended grid ceilings incorporating T-bars and ceiling panels. The light fixtures comprise a double or single edgelit planar or wedge shaped optical element that functions simultaneously as an outcoupling TIR light guide and a light scatterer or direct throughput lens. It provides a number of benefits because of its edgelit design including; thin forms and shallow depth, extended emitting area and controlled lighting distributions from one or two light guide faces. Additionally, areas typically dedicated to bezels or edge reflectors can be greatly reduced or eliminated due to decreased hotspotting to provide a fixture face with very high percentage of light emitting area. Embodiments are described for direct, indirect, and direct indirect configurations. The embodiments provide increased light output, uniformity of brightness and color and controlled direct and indirect lighting distributions and with single or dual off axis intensity peaks.

Abstract: Disclosed are optical composites with a first portion lens of light transmissive material and a second portion backing material which in various embodiments can be reflective, transflective, black, or patterned for visual effect. Non-transmissive backing materials used in optical arrangement embodiments can be utilized to confine and redirect light propagation and also to form mounting features such as flanges and tabs. Energy savings are achieved in optical arrangements with high optical efficiency utilizing compact, durable, and aesthetically appealing optical composites and lighting arrangements capable of providing an assortment of configurable angular light distributions.

Abstract: An optical element with light scattering properties is configured for use in a light fixture or lighting module. When used in combination with a reflector or reflective surface proximate to an output face, the optical element can provide a range of non-Lambertian light distributions in alternative embodiments. The optical element utilizes combinations of dispersed light scattering particles and/or surface features to selectively scatter, disperse and internally reflect light. Using such optical arrangements it is possible to create light distributions with a single or multiple lobes or peak intensities and to control the position and shape of light distributions. The optical element is particularly suitable in low profile edge lit lighting assemblies used in indoor lighting products such as suspended, surface or recessed mounted linear light fixtures, ceiling mounted downlights, cove lights, and light fixtures for wall washing or perimeter lighting.

Abstract: Disclosed are lighting arrangements that provide, when in operation, more uniform angular light distribution emissions into an environment. The lighting arrangements use LED light sources, a light scattering optical element and partial reflectance from a light transmissive sheet or reflective layer to produce direct and indirect illumination with improved angular light distribution and uniformity onto targeted illumination surfaces such as ceilings, walls, and floors. The present disclosure provides a solution to problems of non-uniform angular distribution of light causing visual discomfort and spatial discontinuity in output. Energy savings are achieved with high optical efficiency utilizing compact, durable, robust, and aesthetically appealing optical composites and lighting arrangements capable of providing an assortment of configurable angular light distributions.

Abstract: Disclosed is a lighting assembly for providing electrically configured light distributions and illumination patterns. The light distributions can be pre-configured and stored in a memory device or adjusted once installed in an environment by use of a wired or wireless controller or control device. The lighting assembly comprises at least one primary transmissive optical element and multiple light sources arranged in two or more independently addressed electrical channels spatially arranged on a common plane of the lighting assembly housing. Each light source channel is both physically separated and electrically adjustable in order to control light input into the optical element and subsequently adjust the light distribution output of the lighting assembly. The lighting assembly can be used to provide a wide range of symmetric and asymmetric lighting distributions for direct or indirect lighting as well as focusing or defocusing a projected beam in a spotlight or downlight configuration.

Abstract: A linear lighting assembly is disclosed which produces tailored light distributions valuable in many illumination applications. The linear lighting assembly comprises a unique light scattering optical element within a single edge lit linear lighting module housing configured to fit within a linear light fixture housing, both housings capable of being fabricated in a continuous extrusion process and cut to length as need for specific linear lighting assembly lengths. Light distributions attainable using the invention include, but are not limited to, symmetric and asymmetric bi-lobed “batwing” distributions for wide area direct and indirect lighting, and tilted or asymmetric distributions for perimeter lighting. It is also possible to achieve more rounded and symmetric distributions by an additional diffuser as a cover lens. The invention is particularly well-suited for linear lighting fixtures that are surface mounted, suspended or recessed.

Abstract: A lighting assembly with a single edge lit optical configuration produces various asymmetric light distributions which provide targeted control of light output with peak intensity that is non-normal to the light guide output face. The compact form factor of the lighting assembly embodiments having narrow width are particularly well-suited for use in linear lighting applications requiring suspended, surface and recessed installations typically used to illuminate walls, floors and/or ceilings. The lighting assembly can also be selectively configured and oriented during assembly and installation to achieve various lighting distributions. Optical components within the lighting assembly are typically positioned and retained in optical alignment with internal support features of a linear housing.

Abstract: A light fixture with a single edge lit optical assembly produces various light distributions which provide targeted control of light output with peak intensity that is non-normal to the light guide output face. The compact form factor and modular design of the light fixture embodiments having narrow width are particularly well-suited for use in linear lighting applications requiring suspended, surface and recessed installations typically used to illuminate walls, floors and/or ceilings. The light fixture can also be selectively configured and oriented during assembly and installation to achieve various lighting distributions. Optical components within the light fixture are typically positioned and retained in optical alignment with internal support features of a linear housing. The optical assembly typically includes LED board, light guide, and one or more reflective surfaces. Additionally an optically transmitting component further provides a fixture assembler a range of design choices.

Abstract: A single edge lit lighting module is disclosed which produces tailored light distributions valuable in many illumination applications. The lighting module comprises a unique light scattering optical element which is aligned with one or more LED light sources along one of its edges and works in combination with configured reflective surfaces. Light distributions attainable using the invention include, but are not limited to, symmetric and asymmetric bi-lobed “batwing” distributions for wide area direct and indirect lighting, and tilted or asymmetric distributions for perimeter lighting. It is also possible to achieve more rounded and symmetric distributions by an additional diffuser as a cover lens. The invention's unique single edge lit construction provides the means for achieving the lighting distributions without the need for conventional two lit edges and within a compact form factor with narrow width.