Sharp Kabushiki Kaisha Corporation

Shinji Osaki

Toshio Hata

Shinya Ishizaki

Toyonori Uemura

Makoto Agatani

Tatsuya Morioka

Tomokazu Nada

Makoto Matsuda

Hitoshi Matsushita

Junichi Somei

Kenji Hatazawa

Yuji Kozuma

A substrate-type LED light source () includes: at least one blue LED chip () which has an emission peak in a range fromnm tonm so as to correspond to a blue light region absorption peak of chlorophyll; a red phosphor () which emit, upon receiving excitation light from the at least one blue LED chip (), light having a peak wavelength in a range fromnm tonm so as to correspond to a red light region absorption peak of chlorophyll; and a resin layer () in which the red phosphoris dispersed and which covers the at least one blue LED chip ().

Light emitting device, LED light source for plant cultivation, and plant factory

A light emitting device () includes (i) a surface-mounted light emitting section (), (ii) a lens section () which is provided on a light exit side of the surface-mount light emitting section (), and (iii) a frame section () which fixes a periphery of the lens section (). In the surface-mounted light emitting section (), a resin layer () that contains a red fluorescent material () covers at least one (1) blue LED chip (). This allows the surface-mounted light emitting section () to emit (i) light that matches a peak wavelength which falls within a short wavelength range and (ii) light that matches a peak wavelength which falls within a long wavelength range.

Light emitting apparatus, and light irradiation apparatus provided with light emitting apparatus

An illumination device with a toning function in which possibility of moisture and dust intruding into the case is reduced with a simple mechanism is realized. The illumination device includes a light emitting element light source () mounted on a substrate inside the case unit (), an external gear-shaped fluorescent-substance plate () having a configuration in which a light emitting color of an applied fluorescent substance differs according to position and being arranged above the light emitting element light source () inside the case unit (), and an internal gear-shaped adjustment ring () arranged so as to mesh with the external teeth of the fluorescent-substance plate (), wherein the adjustment ring () is arranged to be positioned on the outer periphery of the main body under a lens dome (), and when the adjustment ring () is rotated, a relative positional relationship between a color distribution applied on the fluorescent-substance plate () and the light emitting element light source () is changed.

Illumination device

The light-emitting device includes: a substrate which has a single layer structure in which a conductive member is partially provided on a surface of the substrate; a plurality of light-emitting elements which are directly provided on the surface of the substrate so as to be electrically connected with the conductive member; a first light reflection resin layer; a second light reflection resin layer which is provided in a looped shape on the surface of the substrate so as to surround an area in which the plurality of light-emitting elements are provided; and a sealing resin which covers the plurality of light-emitting elements. In the area in which the plurality of light-emitting elements are provided, the conductive member is covered with the first light reflection resin layer, the conductive member, which is provided under the second light reflection resin layer, is covered with the second light reflection resin layer directly, and a printed resistor, which is provided under the second light reflection resin layer, is covered with the second light reflection resin layer via the first light reflection resin layer. This makes it possible to provide the light-emitting device which (i) reduces absorption of light so as to achieve excellent light extraction efficiency, and (ii) is highly reliable.

Light-emitting device

Growing community of inventors

Osaka, Japan

Shinji Osaki