An electronic display panel having a generally rectangular shape with rounded corners, a thickness of less than 1.5 mm, a longer dimension of at least 100 mm, a support substrate, a rigid heat-conductive substrate, a transparent or translucent area, a two-dimensional array of at least 1,000,000 digitally addressable solid-state light emitting devices arranged in rows and columns and each having a size from 1 μm to 300 μm, and a grid of connecting members defining a plurality of grid connection nodes and an area-distributed plurality of openings configured for providing a partial view through the panel. The support substrate may incorporate a thin layer of an optically transmissive material having a substantially uniform thickness and a Young's modulus of at least 1 GPa. At least some of the solid-state light emitting devices may be arranged into light emitting clusters and directly or indirectly mounted to a plurality of support pads. The solid-state light emitting devices within the clusters may be configured for emitting light in different colors such as blue, red, and green.

A lighting device having: a first light source including at least one first light-emitting unit having a first light emission color; a second light source including at least one second light-emitting unit having a second light emission color; a resistor connected in series to the first light source; and a switching element connected in series to the second light source, current flowing to the first light source being converted into a control voltage by the resistor, and current flowing to the switching element being controlled by the control voltage.

A solar spectrum-like LED structure, comprising a negative electrode for a three-dimensional integrated package, and a plurality of LED chips and resistors. The negative electrode for a three-dimensional integrated package is a three-dimensional structure comprising a plurality of planes. The plurality of LED chips is installed on the plurality of planes of the negative electrode for the three-dimensional integrated package. Light of different colors emitted by the plurality of LED chips forms a plane light source or a cone light source after being well mixed at an intersection point, thus simulating a solar spectrum. The invention enables manufacturing of a solar spectrum-like LED fluorescent lamp suitable for generating different bands of spectrums for the survival and metabolism of various organisms. In addition, the solar spectrum-like LED fluorescent lamp has a good color-rendering property and visual effect, and can be widely applied in the fields of general lighting, agriculture, animal husbandry and new biological energy sources.

A solar spectrum-like LED structure, comprising a negative electrode for a three-dimensional integrated package, and a plurality of LED chips and resistors. The negative electrode for a three-dimensional integrated package is a three-dimensional structure comprising a plurality of planes. The plurality of LED chips is installed on the plurality of planes of the negative electrode for the three-dimensional integrated package. Light of different colors emitted by the plurality of LED chips forms a plane light source or a cone light source after being well mixed at an intersection point, thus simulating a solar spectrum. The invention enables manufacturing of a solar spectrum-like LED fluorescent lamp suitable for generating different bands of spectrums for the survival and metabolism of various organisms. In addition, the solar spectrum-like LED fluorescent lamp has a good color-rendering property and visual effect, and can be widely applied in the fields of general lighting, agriculture, animal husbandry and new biological energy sources.

A lighting element 100, a lighting system and a luminaire are provided. The lighting element 100 is used for obtaining a skylight appearance and has a white light emitting means 104 for emitting white light, a blue light emitting means 106 for emitting blue light and a Fresnel lens 102. The Fresnel lens 102 is arranged to receive light from the white light emitting means 104 and from the blue light emitting means 106. The white light emitting means 104 is arranged in a first relative position with respect to the Fresnel lens 102 to collimate at least a part of the light emitted by the white light emitting means 104 to obtain a collimated directed light beam in a specific direction. The blue light emitting means 106 is arranged in a second relative position with respect to the Fresnel lens 102 to obtain a blue light emission at least outside the collimated directed light beam.

A lighting system comprises a light source having an exit window and an electrically controllable light processing arrangement, in the form of a grid of cells lying in a plane parallel to the exit window. Each cell has a cell wall formed as electrically switchable element which is switchable between at least two processing modes. The cell wall surrounds an opening, such that light emitted in a normal direction from the light source exit window is not processed, and light passing at an angle to the normal direction greater than a threshold angle is processed by the cell wall for color and/or intensity control.

A lighting system comprises a light source having an exit window and an electrically controllable light processing arrangement, in the form of a grid of cells lying in a plane parallel to the exit window. Each cell has a cell wall formed as electrically switchable element which is switchable between at least two processing modes. The cell wall surrounds an opening, such that light emitted in a normal direction from the light source exit window is not processed, and light passing at an angle to the normal direction greater than a threshold angle is processed by the cell wall for color and/or intensity control.

The present invention relates to a lighting device (300) having a housing (302) and multiple light sources (308) arranged in the housing. The light sources emit light of a first wavelength range. The lighting device includes a wavelength converting member (310) arranged at a distance from the light sources, and it comprises a first wavelength converting material configured to convert a part of said light of a first wavelength range into light of a second wavelength range. The lighting device further includes a color distribution member (312) providing a color distribution of the light emitted from the lighting device where the ratio of intensity of light with the first wavelength range to the intensity of light with the second wavelength range is larger at low angles to a light output surface of the lighting device than at high angles to the light output surface.

The present invention relates to a lighting device (300) having a housing (302) and multiple light sources (308) arranged in the housing. The light sources emit light of a first wavelength range. The lighting device includes a wavelength converting member (310) arranged at a distance from the light sources, and it comprises a first wavelength converting material configured to convert a part of said light of a first wavelength range into light of a second wavelength range. The lighting device further includes a color distribution member (312) providing a color distribution of the light emitted from the lighting device where the ratio of intensity of light with the first wavelength range to the intensity of light with the second wavelength range is larger at low angles to a light output surface of the lighting device than at high angles to the light output surface.

A light diffuser includes: a thermoplastic resin base which has a thermal expansion coefficient of at least 4×10.sup.−5/K and at most 8×10.sup.−5/K; and a light diffusion layer which is disposed on a surface of the thermoplastic resin base and includes an acrylic resin film and an acrylic resin particle, the acrylic resin film including one or more acrylic resins having a glass transition temperature of at least 30° C. and at most 50° C., the acrylic resin particle being included in the acrylic resin film and having an average particle size of at least 1 μm and at most 15 μm.