Provided is a phosphor represented by general formula (1) below,

(Gd.sub.1-x-y,Ln.sub.y,M.sup.II.sub.x).sub.3M.sup.III.sub.2(Ga.sub.1-z,M.sup.IV.sub.z).sub.3O.sub.12:Cr.sup.3+(1) where, in the formula, Ln is one or more elements selected from La, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Yb, and Lu, M.sup.II is a divalent element, M.sup.III is a trivalent element, M.sup.IV is a tetravalent element, and x, y, and z satisfy 0<x<0.5, 0?y<0.5, and 0<z<0.5.

A lighting arrangement (100), comprising a first solid state light source (110) arranged to emit visible light, a second solid state light source (130) arranged to emit second light of at least one of violet light and ultraviolet (UV) light, a reflector (140) comprising at least one light-reflecting surface (145), wherein the reflector at least partially encloses the first and second solid state light sources, and wherein at least part of the reflector defines a mixing chamber (150) for mixing the visible light and the second light, a light exit window (160), wherein the visible light and the second light mixed by the mixing chamber are arranged to exit the lighting arrangement through the light exit window, and a third solid state light source (170) arranged to emit UV light, wherein the third solid state light source is arranged outside the mixing chamber.

A light emitting device (100) includes a phosphor application printed wiring board (30) in which a phosphor layer (36) is provided on a substrate surface, a first light emitting unit (20A) provided in the phosphor application printed wiring board (30) and outputting light having a peak wavelength in a wavelength region of visible light, a second light emitting unit (20B) provided in the phosphor application printed wiring board (30) and outputting light having a peak wavelength in a range of 315 nm to 470 nm (that is, near-ultraviolet ray), a photocatalyst unit (160) including a substance (photocatalyst) that undergoes a photocatalytic reaction with light of a second light emitting unit (20B), and a cover member (110) (lamp cover) that covers the phosphor application printed wiring board (30). The phosphor layer (36) is provided separately from the first light emitting unit (20A) and the second light emitting unit (20B).

The disclosed device relates to a multiple lighting mode LED lamp. The lamp has an LED assembly with a plurality of white LEDs for a first illumination source, and a plurality of UV LEDs for a second illumination source. The LED assembly is attached to the first end of a flexible support, and a base is attached to the second end of the flexible support. The lamp base incorporates an LED driver module in electrical communication with the illumination sources. A manual touch switch in the base, when touched by a user activates the white LEDs to operate the lamp in a lighting mode. A motion sensor in the form of an infrared induction sensor, is incorporated into the face of the LED assembly for detecting motion. Upon motion being detected, the UV LEDs are activated for a predetermined period of time to operate in UV light mode.

An interior aircraft lighting assembly comprises: at least one infrared lighting device for emitting infrared light; at least one further lighting device for emitting visible light; a lighting assembly controller for controlling an operation of the at least one infrared lighting device and of the at least one further lighting device; a supplementary infrared lighting device controller; and a power supply network, which is configured for supplying electric power from the lighting assembly controller to the at least one further lighting device. The supplementary infrared lighting device controller is tapped into the power supply network. The lighting assembly controller is configured to provide an electric trigger pulse on the power supply network for activating the at least one infrared lighting device.

A multi mode aircraft beacon light comprises a mounting portion for mounting the multi mode aircraft beacon light to an aircraft fuselage; at least one visible light source for emitting a visible beacon light output; a plurality of infra-red light sources for emitting an infrared beacon light output; an orientation sensor; and a controller, coupled to the orientation sensor for receiving an orientation sensor signal from the orientation sensor. The controller is configured to determine a mounting orientation of the multi mode aircraft beacon light from the orientation sensor signal, wherein the mounting orientation is indicative of whether the multi mode aircraft beacon light has an upper fuselage mounting position or a lower fuselage mounting position; and to selectively operate the plurality of infrared light sources, depending on the mounting orientation of the multi mode aircraft beacon light.

According to an aspect, an illumination device includes: a light distribution controller having a light distribution control region in which a transmission region of light is changeable; a plurality of types of light sources each disposed at a position facing the light distribution controller; and a controller configured to control operation of the light distribution controller and the plurality of types of light sources. The light distribution controller includes a plurality of liquid crystal panels stacked in a facing direction of the light distribution controller and the light source.

A method for controlling a smart LED grow lamp device, comprising: using a processor, selecting a light recipe from an online light recipe store server via a user interface of a wireless device communicatively coupled to the online light recipe store server over a network, the light recipe including spectrum type, intensity, and duration selections for LEDs included in the smart LED grow lamp device; downloading the light recipe from the online light recipe store server to the wireless device; generating control signals for the smart LED grow lamp device from the light recipe at the wireless device; and, transmitting the control signals to the smart LED grow lamp device from the wireless device to thereby control the smart LED grow lamp device. The smart LED grow lamp device can be voice activated, can include a camera, and can be intelligently controlled by using images from the camera to monitor plant growth, diagnose problems (e.g., lighting, water, temperature, etc.), generate user alerts, and automatically adjust light settings accordingly.

The invention relates to a disinfection lighting device (10) comprising a first light source (14), wherein the first light source (14) comprises a solid-state light source, wherein the solid-state light source comprises one or more light emitting diodes (14a, 14b), lasers and/or superluminescent diodes; wherein the first light source (14) is configured to generate first light source light having a first spectral power distribution, wherein the first spectral power distribution comprises first light source light (140) in the UV wavelength range and/or visible wavelength range, a second light source (13), wherein the second light source (13) is configured to generate second light source light (130) having a second spectral power distribution different from the first spectral power distribution, wherein the second spectral power distribution comprise in the UV wavelength range, wherein the second light source (13) is arranged at a distance D from the first light source (14), the second light source (13) comprises a light input face (13b) configured in a light receiving relationship with the first light source (13), and the second light source (14) comprises a light exit face (13a), wherein the second light source (13) is transmissive for at least, a major, part of the first light source light (140); and wherein the disinfection lighting device (10) is configured to generate lighting device light comprising the second light source light (130) and the first light source light (140) emanating from the light exit face (13a), wherein the disinfection lighting device (10) comprises a light exit window (12), wherein the light exit face (13a) is the light exit window (12).

A light supplying device includes a box and a light emitting device. The box is provided with a cavity and configured to be fully closed or semi-closed, and the light emitting device is arranged in the box and configured to provide ultraviolet light and/or visible light. The device supplies light to a light receiving device such as luminous sporting goods to excite the fluorescent agent on the surface to produce fluorescence effect and shows luminous effect at night or in the dark. In such a way, the light receiving device such as the luminous sporting goods may receive the light anytime and anywhere, without sunlight irradiation, thereby improving the user's experience. Moreover, the device is convenient and portable, and has simple structure and high efficiency.