A housing for a light fixture is described herein. The housing can include a first housing portion having at least one first coupling feature and at least one first receiving feature, where the at least one first receiving feature is configured to receive at least one first light module at a first adjustable distance from the first housing. The housing can also include a second housing portion having at least one second coupling feature, where the at least one second coupling feature mechanically couples to the at least one first coupling feature. A position of the first housing portion relative to the second housing portion can be changed using the at least one first coupling feature and the at least one second coupling feature.

A light emitting device package according to an embodiment has a first frame and a second frame arranged to be spaced apart from each other, a third frame arranged between the first frame and the second frame and spaced apart from the first frame and the second frame, a body supporting the first to third frames, a first light emitting device arranged on the body and electrically connected to the first frame and the third frame, and a second light emitting device arranged on the body and electrically connected to the second frame and the third frame. The body has a first recess in an upper area between the first frame and the third frame, and a second recess in an upper area between the third frame and the second frame. An embodiment may have a first resin part arranged in the first recess, and a second resin part arranged in the second recess. The first light emitting device has a first bonding portion and a second bonding portion, and may be arranged on the first resin part and electrically connected to the first frame and the third frame. The second light emitting device has a third bonding portion and a fourth bonding portion, and may be arranged on the second resin part and electrically connected to the second frame and the third frame.

An integrated light source includes: an emissive radiation source having a first spectrum: an optical element located to direct emissions from the emissive radiation source: a volumetric spectrum converter located to convert emissions directed from the emissive radiation source to emissions having a second spectrum different from the first spectrum; an optical reflector located about the converter; an output filter, the reflector being located to reflect die converter emissions towards the output filter; and a package body having an internal cavity containing the emissive radiation source, optical element, converter, reflector, and filter, wherein desired light radiates from the cavity through the filter.

An integrated light source includes: an emissive radiation source having a first spectrum: an optical element located to direct emissions from the emissive radiation source: a volumetric spectrum converter located to convert emissions directed from the emissive radiation source to emissions having a second spectrum different from the first spectrum; an optical reflector located about the converter; an output filter, the reflector being located to reflect die converter emissions towards the output filter; and a package body having an internal cavity containing the emissive radiation source, optical element, converter, reflector, and filter, wherein desired light radiates from the cavity through the filter.

A biological lighting system to provide temporally- and spatially-modulated photon flux output and spectral power distributions to plants on a circadian and circannual basis, or circadian and life cycle basis, to maximize effective and efficient growth in a horticultural setting. The photon flux or irradiance output and the spectral power distribution are modulated to match circadian and circannual rhythms, with individual or multiple luminaires controlled through one or more controllers. Different lighting spectra can be employed depending on the direction of illumination. The photon flux or irradiance output and the spectral power distribution may be set as best suited for any particular plant species, and the system is also useful for raising animals.

An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.

An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.

Arc modular light devices, systems, and methods. In at least one exemplary embodiment of a module system of the present disclosure, the module system comprises a plurality of LED modules, each LED module comprising an outer housing, a light source positioned within the outer housing, and a lens positioned so that light from the light source can be emitted through the lens; and a plate configured to couple to each of the plurality of LED modules; wherein the module system is configured to focus light from the LED modules inward when the plate has a concave curvature; and wherein the module system is configured to spread light from the LED modules outward when the plate has a convex curvature.

Arc modular light devices, systems, and methods. In at least one exemplary embodiment of a module system of the present disclosure, the module system comprises a plurality of LED modules, each LED module comprising an outer housing, a light source positioned within the outer housing, and a lens positioned so that light from the light source can be emitted through the lens; and a plate configured to couple to each of the plurality of LED modules; wherein the module system is configured to focus light from the LED modules inward when the plate has a concave curvature; and wherein the module system is configured to spread light from the LED modules outward when the plate has a convex curvature.

A light emitting diode (LED) module that is configured to emit white light is provided. The LED module includes: a blue light emitting diode configured to emit blue light having a first peak wavelength of 420 nm to 465 nm; at least one wavelength conversion material that is configured to convert a portion of the blue light into converted light of a different wavelength; and a near-infrared light source configured to emit additional light having a second peak wavelength in a range of 740 nm to 900 nm and a full width at half maximum (FWHM) of 120 nm or less. The converted light, another portion of the blue light, and the additional light combine to form the white light.