An Illumination device includes light emitting devices and an optical system for collimating light emitted by the light emitting devices. A first group of the light emitting devices are arranged in a first array having first gaps, and a first optical system is arranged near the first group of light emitting devices. At least one second group of the light emitting devices are arranged in a second array, and the second array has second gaps. The second optical system is arranged near the second group of light emitting devices. The first and second optical systems are arranged so that, in a distance from the illumination device, light emitted by the first group of light emitting devices, collimated by the first optical system, and light emitted by the second group of light emitting devices, collimated by the second optical system, are superimposed to form a gap-free illumination field.

A lighting device (5) is disclosed. The lighting device (5) comprises a plurality of light-emitting filaments (10), wherein each of the light-emitting filaments (10) comprises a plurality of solid-state light sources mounted on a carrier along a longitudinal axis of the light-emitting filament (10). The light-emitting filaments (10) are arranged in a planar configuration, and the lighting device (5) has a main direction of illumination (I) perpendicularly away from a plane (P) defined by the planar configuration. The longitudinal axes (L1, L2) of at least two light-emitting filaments (10) are non-parallel to each other. A luminaire comprising the lighting device is also disclosed. The lighting device (5) can be produced in a cost-efficient manner.

The invention provides a lighting device (1100) comprising a first 2D arrangement (100) of a plurality n of light sources (10) and a second 2D arrangement (200) of a plurality m of beam shaping elements (20) configured downstream of the light sources (10), wherein: —the light sources (10) are configured to generate light source light (11), wherein the n light sources (10) comprises a plurality k of individually controllable subsets (110) of light sources (10), wherein the beam shaping elements (20) are configured to shape a beam of the light source light (11) of the n light sources (10), and wherein n≥16, m≥4, n/m>1, and 4≤k≤n; —upstream of each beam shaping element (20) light sources (10) are configured of different individually controllable subsets (110), and wherein two or more of the beam shaping elements (20) have different spatial configurations of the light sources (10) that are configured upstream of the respective beam shaping elements (20).

An LED lighting fixture includes a housing, a substrate located within the housing, a plurality of LED groups of various colors mounted on the substrate, each LED color group including multiple LED components, at least one circuit communicating with a power supply and adapted for powering the LED components, and an optical component located at an output end of the housing. The LED components are arranged along first and second directions orthogonal to one another, such that no two LED of the same color reside adjacent one another along both of the first and second directions, and each LED component is spaced-apart from an adjacent LED component a distance no greater than 1.0 mm.

A LED grow-light system is disclosed. The LED grow-light system includes one or more grow-light canopies with linear LED light bars to provide upward and downward lighting in a central illumination area. The LED light bars are preferably configured to move up and down relative to a grow bed. The LED grow-light system or grow-light canopies constructed using T-slot interconnects that lock into T-channels of the T-slot bars and/or T-slot light bars.

A luminaire and LED light engine are provided. The luminaire includes the LED light engine and an optical device. The LED light engine includes an LED array and a partial diffuser. The partial diffuser diffuses light that is emitted by LEDs of a selected first subset of LEDs in the LED array and leaves undiffused light that is emitted by LEDs of a second subset of LEDs in the LED array. At least some LEDs are selected for inclusion in the first subset as emitting light that produces poorly blended colors in a light beam emitted by the LED array. The optical device is configured to receive a light beam emitted from the LED light engine and emit a modified light beam.

A light fixture, for example a horticulture or plant growing light, that includes a plurality of light emitting elements, for example LEDs, arranged with a first portion of light emitters having a first density and a second portion having a second density, where the first density is greater than the second density, where the first portion is arranged near one or more perimeter edge of the light fixture and the second portion is arranged inward of the perimeter edge of the fixture, and where the uniformity of light dispersion from the light delivering plane of the light fixture is increased due to the first density of light emitters being greater than the second density of light emitters and due to the arrangement of the first and second portions of light emitters with respect to the light delivering plane of the fixture.

A light source device includes: a substrate; a light-emitting unit matrix including a plurality of light-emitting units disposed in a matrix on the substrate; and a reflective resin disposed in a region, on the substrate, including a region where the light-emitting unit matrix is disposed. The plurality of light-emitting units include a first light-emitting unit and a second light-emitting unit adjacent to each other in a column direction of the light-emitting unit matrix. The reflective resin includes a first reflective portion disposed between the first light-emitting unit and the second light-emitting unit and extending in a direction intersecting the column direction. At least a portion of an upper surface of the first reflective portion protrudes beyond an upper surface of the first light-emitting unit and an upper surface of the second light-emitting unit.

A light-emitting device includes a multiplicity of light-emitting modules arranged on a first substrate. Each light-emitting module of the multiplicity of light-emitting modules includes a multiplicity of light-emitting components arranged on a second substrate. The second substrate is electrically connected to the first substrate, and includes a common primary lens for the multiplicity of light-emitting components.

A portable lighting device capable of being clamped on a multitude of structures is disclosed. In some embodiments, the portable lighting device includes a rotatably adjustable light head.