Ideal Industries Lighting LLC

Cree Lighting USA LLC

Amazon Technologies, Inc.

Abl IP Holding LLC

Bin Hou

Kurt S Wilcox

Kurt Schreib

Eric J Tarsa

Randy Bernard

Jeremy Richard Sorenson

Scott Fisher

Ted Lowes

Moxuan Zhu

Anthony T Schauf

Randall Levy Bernard

Miguel Virgen

Juho Ilkka Jalava

James G Brand

Nageswara Rao Tadepalli

Xiaolong Zheng

Ahmed Hassan

Thomas R Hoffend

Devices, systems, and methods are provided for a front light for use with reflective displays. A display device (such as an e-reader, for example) may include a light source and a light guide able to receive first light from the light source. The light guide includes a plurality of extraction features that control optimal movement of light emitted by the light source through a display stack of the display device. The extraction feature is provided in a wedge shape at an angle such that when light refracts from the extraction feature, it is directed towards the reflective LCD display at an incidence angle close to the display normal for the reflected light to exhibit similar properties as the reflected light from the EPD panel.

Front light for use with reflective displays

An optic for a light-emitting diode (LED) array comprises an arrangement of optical structures for providing down lighting distribution from the LED array and a waveguide edge for providing up-lighting distribution from the LED array. Luminaires are described comprising an LED array and the optic. An overhead light fixture includes a driver assembly and a light-emitting assembly. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.

LED light fixtures with waveguide edge

A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region are formed by pairs of transverse surfaces each surface of which redirects the received light.

Hybrid lens for controlled light distribution

An overhead light fixture includes a driver assembly and a light-emitting assembly. The driver assembly includes a driver and a housing. The light-emitting assembly is operably connected to the driver and configured for downward emission of light from a light source of the light-emitting assembly. The light-emitting assembly is detachably secured to the driver assembly. The light fixture is configured to be mounted to a canopy sheet of an overhead canopy, with the driver assembly disposed above the canopy sheet and the light-emitting assembly disposed below the canopy sheet. The driver assembly is optionally configured so that, when the light-emitting assembly is detached from the driver assembly, the driver is removable downwardly through the base portion. A bezel is optionally disposed around a lens of the light-emitting assembly, for aesthetic reasons and/or for controlling a degree of lateral emission of light from the light fixture.

Overhead light fixtures and methods

An optic for a light emitting diode array comprises an arrangement of optical structures for providing one or more down lighting distribution from the LED array; and a waveguide edge for providing one or more up-lighting distributions from the LED array. Luminaires are described comprising a light emitting diode (LED) array and the optic. Lighting systems are described comprising a plurality of the luminaires arranged over an area enclosed by walls.

High bay luminaire

Luminaire

A lens for distribution of light from a light emitter having an emitter axis. The lens comprising an inner surface and an output surface with faceted and smooth outer regions. At least one of the faceted outer regions is formed by a plurality of pairs of transverse outer regions extending in direction of a plane of bilateral symmetry of the lens. The inner surface defines an inner cavity about the emitter axis and has inner-surface stepwise discontinuities formed by a plurality of pairs of transverse inner regions with intersection regions therebetween. The lens may also have at least two secondary surface portions spaced apart and extending along two sides of the inner surface, the secondary surface portions being configured for total internal reflection (TIR) of light received from the inner surface.

A lens for distribution of light predominantly toward a preferential side from a light emitter having an emitter axis. The lens has a faceted output region, a smooth output surface and at least one reflective surface which reflects light through total-internal-reflection (TIR) toward the faceted output region. The faceted output region is formed by pairs of transverse surfaces each surface of which redirects the received light to provide a composite illuminance pattern. The lens may further have faceted input surfaces at least partially defining a light-input cavity about the emitter axis. The faceted input region is formed by pairs of transverse surfaces each surface of which redirects the received light.

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Schaumburg, IL, United States of America

Bin Hou