The present disclosure provides systems for generating tunable white light. The systems include a plurality of LED strings that generate light with color points that fall within red, blue, green, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output. Methods of generating white light by combining light generated by red, blue, green, and cyan color channels. Methods of generating white light points at substantially the same 1931 CIE chromaticity diagram color coordinates having different EML.

The present disclosure provides systems for generating tunable white light. The systems include a plurality of LED strings that generate light with color points that fall within red, blue, green, and cyan color ranges, with each LED string being driven with a separately controllable drive current in order to tune the generated light output. Methods of generating white light by combining light generated by red, blue, green, and cyan color channels. Methods of generating white light points at substantially the same 1931 CIE chromaticity diagram color coordinates having different EML.

The light emitting device package disclosed in the embodiment includes first and second frames spaced apart from each other; a body disposed between the first and second frames; a light emitting device including a first bonding portion and a second bonding portion on a lower portion thereof; and a first resin disposed between the body and the light emitting device, wherein the first frame includes a first protruding portion facing the first bonding portion of the light emitting device, and the second frame includes a second protruding portion facing the second bonding portion of the light emitting device, and including a first conductive layer between the first bonding portion and the first protruding portion and a second conductive layer between the second bonding portion and the second protruding portion.

The present disclosure provides lighting systems suitable for generating white light. The lighting systems can have a first lighting channel configured to produce a first white light having a first color point and a first spectral power distribution, a second lighting channel configured to produce a second white light having a second color point and a second spectral power distribution, and a control system configured to independently change the intensity of each of the first lighting channel and the second lighting channel. The first lighting channels can have LEDs having an emission with a first peak wavelength of between about 440 nm and about 510 nm. The second lighting channels can have LEDs having an emission with a second peak wavelength of between about 380 nm and about 420 nm. The disclosure provides methods of generating white light using the lighting systems described.

A light-emitting unit, having a substrate; a first light-emitting body formed on the substrate, and having a first longer side and a first shorter side; a second light-emitting body formed on the substrate, and having a second longer side and a second shorter side which is parallel to the first longer side; a third light-emitting body formed on the substrate, having a third longer side and a third shorter side which is parallel to the first longer side, and electrically connected to the first light-emitting body and the second light-emitting body; a first electrode covering the first light-emitting body and the second light-emitting body, and electrically connecting to the first light-emitting body; a second electrode separated from the first electrode, and covering the second light-emitting body without covering the first light-emitting body; and a transparent element enclosing the first light-emitting body, the second light-emitting body, and the third light-emitting body.

A light-emitting unit, having a substrate; a first light-emitting body formed on the substrate, and having a first longer side and a first shorter side; a second light-emitting body formed on the substrate, and having a second longer side and a second shorter side which is parallel to the first longer side; a third light-emitting body formed on the substrate, having a third longer side and a third shorter side which is parallel to the first longer side, and electrically connected to the first light-emitting body and the second light-emitting body; a first electrode covering the first light-emitting body and the second light-emitting body, and electrically connecting to the first light-emitting body; a second electrode separated from the first electrode, and covering the second light-emitting body without covering the first light-emitting body; and a transparent element enclosing the first light-emitting body, the second light-emitting body, and the third light-emitting body.

The invention relates to the use of branched aliphatic hydrocarbons such as squalane in compositions based on thermoplastic polymer, in particular on polycarbonate, which are used for producing molded parts used in LED lighting units, such as covers for instance. According to the invention it has been found that the use of branched aliphatic hydrocarbons makes it possible to enhance the total transmission and the transmission in the range from 360 to 460 nm, thus making corresponding compositions particularly suitable for producing molded parts for use in combination with white LED light sources. It has additionally been shown that yellowing and haze are simultaneously reduced.

The light emitting device package disclosed in the embodiment includes a package body including first and second frames, and a first body disposed between the first and second frames; a second body disposed on the package body and including a cavity and a sub-cavity spaced apart from the cavity; a light emitting device disposed in the cavity and including first and second bonding portions; and a protection device disposed in the sub-cavity, wherein the package body and the second body may be coupled to an adhesive member.

The light emitting device package disclosed in the embodiment includes a package body including first and second frames, and a first body disposed between the first and second frames; a second body disposed on the package body and including a cavity and a sub-cavity spaced apart from the cavity; a light emitting device disposed in the cavity and including first and second bonding portions; and a protection device disposed in the sub-cavity, wherein the package body and the second body may be coupled to an adhesive member.

A light fixture includes an electronics housing, opposing connector assemblies and at least one light module. The electronics housing and the at least one light module are each supported by and extend between the opposing connector assemblies such that a gap is provided between the electronics housing and light module.