Abstract: A planar light unit is provided that suppresses appearance of a bright line when viewed from the side of the emission surface of the light guide plate. The planar light unit includes a light source, and a light guide plate including an incident surface for receiving light emitted from the light source, an emission surface from which the light introduced through the incident surface is emitted, an opposing surface disposed so as to oppose the emission surface, and a side surface disposed along an outer periphery of the emission surface and the opposing surface. The emission surface has a non-rectangular outer shape, and at least a part of the side surface is formed as a diffusing surface.

Abstract: A lighting assembly is provided that includes a light fixture in combination with a support grid such as a drop ceiling t-bar. The light fixture can be configured to use a t-bar as the main form of support. The light fixture can be push-fit onto a t-bar or use a clip to join two or more portions of the light fixture to an installed t-bar. Once attached to the T-bar, the light fixture itself can provides support for a ceiling tile. Various embodiments are provided which achieve a variety of light distributions useful in typical illumination applications. Both recessed and suspended fixture types are achieved in various embodiments which are particularly well suited for LED lighting.

Abstract: There are provided a light emitting unit that enhances the uniformity of in-plane colors, as well as a display and a lighting apparatus that include such a light emitting unit thereon. The light emitting unit includes: a plurality of light emitting sections each having a light source and a wavelength conversion member, the wavelength conversion member converting a wavelength of light emitted from the light source; an optical component having a light incident surface in opposition to the plurality of light emitting sections; and a color unevenness prevention structure suppressing direct entering of light from the light source into the optical component.

Abstract: A liquid crystal display device includes: a liquid crystal panel; a backlight; an illuminance sensor; and a display controller. The liquid crystal panel includes, in order toward the backlight, an antireflection layer, a first linearly polarizing plate, a first ?/4 retardation layer, a first substrate, a second ?/4 retardation layer, a liquid crystal layer, a second substrate, and a second linearly polarizing plate. The liquid crystal panel has a reflectance within a predetermined range in irradiating the liquid crystal panel with light from an antireflection layer side. The liquid crystal display device satisfies a predetermined relation in the following X and Y, where X (unit: lx) is defined as an environmental illuminance detected by the illuminance sensor, and Y (unit: nit) is defined as a luminance of the backlight, adjusted by the display controller.

Abstract: An edge-illuminating light guide device works with a consumer electronic to provide directional lighting to efficiently emit illumination from the sides of a screen, while maximizing light emission and minimizing power usage. The device utilizes two light guides that join to direct light from a light source across a directional path from the sides of the device. An ingress light guide has a flat, triangular shape that tapers from a narrow light inlet end to a wide light outlet end. The narrow light inlet end connects to a light source. An egress light guide is defined by a flat, rectangular shape. The egress light guide integrally joins with, and is in illuminating communication with the ingress light guide. A composition coats one of the faces of the egress light guide to prevent passage of the light; thereby serving as a color filter. The device is fabricated from a polycarbonate.

Abstract: Systems and methods for an intracanopy horticultural lighting fixture. In aspects, a horticultural luminaire has an edgelit lightguide or optical conduit extending from a housing with its major dimension extending along longitudinal axis L, and one or more endcaps coupled to respective lateral edges, endcaps being convex curved about one or more axes transverse the longitudinal axis to prevent catch points. The endcap can be coupled to the housing to hinder separation of the lightguide. In another aspect a horticultural luminaire has an edgelit lightguide generating an output having downwardly directed peaks at about +/?30 degrees from vertical. Light output is preferably batwing shaped and symmetric. Another aspect provides a method for intracanopy lighting having an entirely planar optical conduit, a major extent of the optical conduit disposed along its longitudinal axis (L), and supporting the optical conduit, preferably its entirety, below an upper plant canopy.

Abstract: A display backlight, comprises: an excitation source, LED (146), for generating blue excitation light (148) with a peak emission wavelength in a wavelength range 445 nm to 465 nm; and a photoluminescence wavelength conversion layer (152). The photoluminescence wavelength conversion layer (152) comprises a mixture of a green-emitting photoluminescence material with a peak emission in a wavelength range 530 nm to 545 nm, a red-emitting photoluminescence material with a peak emission in a wavelength range 600 nm to 650 nm and particles of light scattering material.

Abstract: An imaging directional backlight apparatus including a waveguide, a light source array, for providing large area directed illumination from localized light sources. The waveguide may include a stepped structure, in which the steps may further include extraction features optically hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. In operation, luminance streaks and bright illumination regions may be formed due to undesirable imaging characteristics from the structure of the Fresnel mirror. Fresnel mirror draft facets and reflective facet microstructures are provided that achieve reduction of visibility of light streaks and bright illumination regions.

Abstract: A backlight and a multiview display employ a light guide having angle-preserving scattering feature and a tapered collimator. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The tapered collimator is configured to collimate light provided by a light source as collimated light and to communicate the collimated light to the light guide to be guided as the guided light. The collimated light has a collimation factor configured to provide a predetermined angular spread of the guided light, the collimation factor being a function of a taper of the tapered collimator. The multiview display includes multiview pixels that include view pixels as well as the angle-preserving scattering feature that includes a multibeam element having a size that is comparable to a size of a view pixel.

Abstract: Systems, methods, and other embodiments described herein relate to an antenna formed by a silicon photonic two-dimensional grating. In one embodiment, a phased-array light detection and ranging (LIDAR) device includes a phase shifting array that separately shifts a phase of a source light wave to produce separate light waves with distinct phases. The LIDAR device includes optical inputs operably connected with the phase shifting array to receive the separate light waves. The LIDAR device includes a photonic grating operably connected with the optical inputs to receive the separate light waves and having a body that is disposed within a substrate with a face of the body exposed within the substrate. The photonic grating including grating structures exposed within the face. The grating structures redirect the separate light waves to emit the light waves from the photonic grating to form the beam of light.

Abstract: An optical system includes a plurality of lenses and a lens holding member. Each of the plurality of lenses has a cut-off face to have a shape of a partial circle formed by cutting off part of a periphery of a first circle. Cut-off faces of adjacent lenses face each other. The adjacent lenses have an interval between centers of the lenses is smaller than a diameter of the first circle. The lens holding member has an outer surface including a plurality of lens arrangement holes in which the plurality of lenses are respectively disposed. Adjacent lens arrangement holes are linked together to form a linked hole. The linked hole has a shape that represents part of a shape formed by disposing a plurality of second circles, the second circles being partially overlapped, each of the second circles having a diameter larger than a diameter of the first circle.

Abstract: A ground insert lamp includes a ground insert and a lighting assembly detachably mounted on the ground insert. The lighting assembly includes a lamp body, and a light source module. The lamp body is provided with a fixed portion movably mounted on and rotatable relative to the ground insert. The lamp body includes a primary shell, a regulating shell, and a focus regulating module. The light source module is mounted in the primary shell. The focus regulating module includes a reflective mirror, and a convex mirror. The reflective mirror is mounted on the primary shell. The convex mirror is mounted in the regulating shell. The regulating shell is moved relative to the primary shell, and the convex mirror is moved with the regulating shell.

Abstract: The invention relates to a double-row matrix illumination module, wherein a light source part comprises an LED circuit board and a heat sink that are secured to each other; a primary optical system comprises a primary optical element mounting bracket, a primary optical element press plate and an LED circuit board. Primary optical elements are all mounted on the primary optical element mounting bracket in position. The primary optical elements are consisted of two layers, wherein the upper layer is primary optical element A and the lower layer is primary optical element B. The primary optical element mounting bracket configured as a base component for mounting and positioning comprises two rows of rectangular holes for fixing light-incident ends of the primary optical element A and the primary optical element B respectively and separating the light-incident ends from each other.

Abstract: Example implementations relate to liquid crystal display (LCD) lighting modes. An example device can include an LCD, a wide gamut light-emitting diode (LED) light set to backlight the LCD, a narrow gamut LED light set to backlight the LCD and a controller communicatively coupled to the LCD. The controller can switch the LCD between a wide gamut lighting mode, a narrow gamut lighting mode, and a high brightness lighting mode in response to changes in ambient light and content displayed on the LCD.

Abstract: Systems and methods for an intracanopy horticultural lighting fixture. In aspects, a horticultural luminaire has an edgelit lightguide or optical conduit (40) extending from a housing, a lightguide length extending along longitudinal axis L, and one or more endcaps (214) coupled to respective lateral edges extending along a height axis H, the endcap having a lightguide-receiving socket spaced (220) adjacent a lightsource housing-receiving socket (218). In other aspects the endcaps are convex curved about one or more axes transverse the longitudinal axis to prevent catch points. In another aspect a luminaire has an edgelit lightguide generating an output having downwardly directed peaks at about +/?30 degrees from vertical. Light output is preferably batwing shaped and symmetric. Another aspect is providing intracanopy lighting having a planar optical conduit, a major extent of which is disposed along its longitudinal axis (L), and supporting the optical conduit below an upper plant canopy.

Abstract: A headlamp of a motor vehicle that uses individual light emitting diodes or LEDs to generate individual light beams, which collectively form a composite beam where some of the individual beams overlap neighboring beams because of manufacturing irregularities and form bright spots within the composite beam, which are not desirable. It is possible to de-focus the irregularities from individual beams to thereby spread out the bright spots, and reduce their intensities with another inventive goal to selectively defocus individual beams and soften the edges that apply glare to surrounding vehicles when individual beams are not adjacent individual beams or individual beams that are active and flank surrounding vehicles to be shut off.

Abstract: An illuminator includes an upper shell, a lower shell, an LED array and at least one fan. The upper shell includes a first outlet portion extending downward and inward from an inlet portion. The inlet portion includes at least one entrance. The first outlet portion includes a row of vents. The lower shell is made of thermally conductive metal and includes primary radiator fins extending from an upper face of a substrate. The lower shell is connected to the upper shell to form a tubular structure. The LED array is connected to a lower face of the lower shell and includes light-emitting diodes. The at least one fan is inserted in the tubular structure, connected to the inlet portion, and aligned with the at least one aperture.

Abstract: An example lighting assembly may comprise: a mounting frame comprising a plurality of vertical bars positioned on an imaginary cylindrical surface; a plurality of horizontal joists attached to the vertical bars; a plurality of lighting fixtures attached to the mounting frame; and a plurality of camera mounts attached to the mounting frame; wherein the lighting fixtures and camera mounts are positioned to form a pre-defined grid configuration.

Abstract: A lighting control unit of a light assembly includes a first plate, a power circuit board configured to receive power for the light assembly, a light blender configured to transform movement information into one or more control signals to modify one or more lighting parameters associated with a light source of the light assembly, and a second plate with a first side, wherein the light blender is mounted on the first side, and the second plate is rotatable in relation to the first plate.

Abstract: Systems and methods for an intracanopy horticultural lighting fixture. In aspects, a horticultural luminaire has an edgelit lightguide or optical conduit extending from a housing with its major dimension extending along longitudinal axis L, and one or more endcaps coupled to respective lateral edges, endcaps being convex curved about one or more axes transverse the longitudinal axis to prevent catch points. The endcap can be coupled to the housing to hinder separation of the lightguide. In another aspect a horticultural luminaire has an edgelit lightguide generating an output having downwardly directed peaks at about +/?30 degrees from vertical. Light output is preferably batwing shaped and symmetric. Another aspect provides a method for intracanopy lighting having an entirely planar optical conduit, a major extent of the optical conduit disposed along its longitudinal axis (L), and supporting the optical conduit, preferably its entirety, below an upper plant canopy.