Abstract: To improve the luminance of light emitted by a light-emitting device, the light-emitting device includes a base (1) that has an opening part (1p) constituted by a light-reflecting surface (1r) and a bottom surface (1u), a light-emitting chip (2) that is mounted on the bottom surface (1u) of the opening part (1p), a transparent member (3) that covers the light-emitting chip (2), and an optical member (4) that is disposed on the transparent member (3). The transparent member (3) is disposed on the bottom surface (1u) of the opening part (1p) in a state where the transparent member (3) is spaced away from the light-reflecting surface (1r) of the opening part (1p).

Abstract: A light-emitting device includes a substrate, a pair of electrode layers disposed on the substrate, a light-emitting element disposed between the pair of electrode layers to keep a first space with each of the pair of electrode layers while electrically connecting with each of the pair of electrode layers, and a pair of reflection layers, each extending in overlapping relation from one to the other one of the pair of electrode layers as seen in a transparent plan view. The light-emitting element is disposed between the pair of reflection layers to keep a second space with each of the pair of reflection layers.

Abstract: A light emitting device includes a base, a sub-mount substrate, and a frame member. The light emitting device further includes a light emitting element and a wavelength converting member. The sub-mount substrate is disposed on the base, and has an upper surface made of a ceramic sintered body. The frame member has a light reflecting portion made of porous ceramics, is disposed on the base, and surrounds the sub-mount substrate. The light emitting element is mounted on the sub-mount substrate. The wavelength converting member covers the light emitting element and the light reflecting portion of the frame member.

Abstract: To improve the luminance of light emitted by a light-emitting device, the light-emitting device includes a base (1) that has an opening part (1p) constituted by a light-reflecting surface (1r) and a bottom surface (1u), a light-emitting chip (2) that is mounted on the bottom surface (1u) of the opening part (1p), a transparent member (3) that covers the light-emitting chip (2), and an optical member (4) that is disposed on the transparent member (3). The transparent member (3) is disposed on the bottom surface (1u) of the opening part (1p) in a state where the transparent member (3) is spaced away from the light-reflecting surface (1r) of the opening part (1p).

Abstract: The present invention relates to a reflective member. The reflective member includes a reflective layer formed to be porous using an inorganic material. The reflective layer has a porosity of 15-43%. The reflective layer is formed by partly combining a plurality of inorganic particles with each other.

Abstract: A light-emitting device includes a substrate, a pair of electrode layers disposed on the substrate, a light-emitting element disposed between the pair of electrode layers to keep a first space with each of the pair of electrode layers while electrically connecting with each of the pair of electrode layers, and a pair of reflection layers, each extending in overlapping relation from one to the other one of the pair of electrode layers as seen in a transparent plan view. The light-emitting element is disposed between the pair of reflection layers to keep a second space with each of the pair of reflection layers.

Abstract: A light-emitting device includes a substrate mounted with a light-emitting element, and a frame disposed on the substrate. The frame includes a first frame portion disposed on the substrate and surrounding the light-emitting element, and having an inner wall surface substantially perpendicular to an upper surface of the substrate, an upper end of the inner wall surface being positioned at a level higher than that of an upper surface of the light-emitting element, and a second frame portion surrounding the inner wall surface of the first frame portion when viewed in a plan view, and having an inner periphery which is so shaped as to extend at an outward incline from a lower end of the inner periphery to an upper thereof. The light-emitting device includes a wavelength converter supported on the frame and opposed to the substrate with a gap.

Abstract: A light emitting device includes a base, a sub-mount substrate, and a frame member. The light emitting device further includes a light emitting element and a wavelength converting member. The sub-mount substrate is disposed on the base, and has an upper surface made of a ceramic sintered body. The frame member has a light reflecting portion made of porous ceramics, is disposed on the base, and surrounds the sub-mount substrate. The light emitting element is mounted on the sub-mount substrate. The wavelength converting member covers the light emitting element and the light reflecting portion of the frame member.

Abstract: A method for determining a mixture composition of a plurality of fluorescent materials includes steps of calculating a first function, calculating a second function and determining a secondary mixture composition of the plurality of fluorescent materials. The first function is calculated by comparing an objective spectrum of an objective light with a reference spectrum of a reference light. The second function is calculated by comparing a primary spectrum of the plurality of fluorescent materials mixed at a primary mixture with the reference spectrum composition. The secondary mixture composition is determined on the basis of the result of comparison between the first function and the second function.

Abstract: The present invention relates to a reflective member (7). The reflective member (7) includes a reflective layer 61 (7) formed to be porous using an inorganic material. The reflective layer 61 (7) has a porosity of 15-43%. Such reflective layer 61 (7) is formed by partly combining a plurality of inorganic particles with each other.

Abstract: A light emitting device having a high light emitting efficiency is provided. The light emitting device is provided with a light-emitting chip 4 which emits a first light having a peak wavelength within a first wavelength range; a fluorescent layer 6, which is arranged above the light-emitting chip 4 and emits a second light having a peak wavelength within a second wavelength range which is larger than the first wavelength range, corresponding to the first light; and a reflecting surface which surrounds a region between the light-emitting chip 4 and the fluorescent layer 6 and scatters and reflects the first light emitted from the light-emitting chip 4 and the first light reflected by the fluorescent layer 6.

Abstract: A base structure for a light emitting device includes a supporting device for supporting a light emitting element, a connection device for being electrically connected to the light emitting element, and a filler member. The supporting device includes a metallic material. The connection device surrounds the supporting device and includes a metallic material. The filler member fills a gap separating the supporting device from the connection device.

Abstract: A light source apparatus of the present invention comprises a semiconductor light emitting device which emits light, a wavelength converting member which receives the light emitted by the semiconductor light emitting device and emits light of a wavelength longer than that of the original light, and a wavelength selecting member which is disposed between the semiconductor light emitting device and the wavelength converting member and reflects and transmits the incident light with different reflectivity and different transmittance depending on the wavelength of the incident light.

Abstract: A lighting apparatus includes a substrate, a plurality of light-emitting chips and a light-emitting member. The substrate has a layer including a base material and a medium. The base material is formed of an inorganic material and includes a plurality of cells. The medium is provided in the cells and has a refractive index lower than that of the inorganic material. The light-emitting chips are made of a semiconductor material and mounted on the substrate. The light-emitting member includes a fluorescent material and is provided above the light-emitting chips.

Abstract: A method for determining a mixture composition of a plurality of fluorescent materials includes steps of calculating a first function, calculating a second function and determining a secondary mixture composition of the plurality of fluorescent materials. The first function is calculated by comparing an objective spectrum of an objective light with a reference spectrum of a reference light. The second function is calculated by comparing a primary spectrum of the plurality of fluorescent materials mixed at a primary mixture with the reference spectrum composition. The secondary mixture composition is determined on the basis of the result of comparison between the first function and the second function.

Abstract: A base structure for a light emitting device includes a supporting device for supporting a light emitting element, a connection device for being electrically connected to the light emitting element, and a filler member. The supporting device includes a metallic material. The connection device surrounds the supporting device and includes a metallic material. The filler member fills a gap separating the supporting device from the connection device.