Abstract: A method for manufacturing a light emitting device includes preparing a light emitting device including: a package defining a recess; a first light source placed within the recess, and including a first light emitting element and a first wavelength conversion member; a second light source placed within the recess; and a second wavelength conversion member in contact with and covering the first light source and the second light source, the first light source and the second light source being configured to emit light independently of each other. The method further includes: emitting light simultaneously from the first light source and the second light source to obtain mixed light for which light from the first light source, light from the second light source, and light from the second wavelength conversion member are mixed; determining a chromaticity of the mixed light; and binning the mixed light based on the chromaticity.

Abstract: A method for manufacturing a light emitting device includes preparing a light emitting device including: a package defining a recess; a first light source placed within the recess, and including a first light emitting element and a first wavelength conversion member; a second light source placed within the recess; and a second wavelength conversion member in contact with and covering the first light source and the second light source, the first light source and the second light source being configured to emit light independently of each other. The method further includes: emitting light simultaneously from the first light source and the second light source to obtain mixed light for which light from the first light source, light from the second light source, and light from the second wavelength conversion member are mixed; determining a chromaticity of the mixed light; and binning the mixed light based on the chromaticity.

Abstract: An illumination device manufacturing system includes memory, a first color tone bin, a first bin, a second bin, a third bin, a fourth bin, a fifth bin, a sixth bin, a color tone detector, a classifying device, and a mounting device. The memory is to store a reference chromaticity data including a range of chromaticity for color tone classifying which includes a first color tone area and a second color tone area in which the first color tone area is provided. The first color tone bin, the first bin, the second bin, the third bin, the fourth bin, the fifth bin, and the sixth bin are provided to respectively correspond to the first color tone area and a first region through a sixth region. The color tone detector is configured to detect a color tone of each of a plurality of different color tone light emitting devices.

Abstract: An illumination device manufacturing system includes memory, a first color tone bin, a first bin, a second bin, a third bin, a fourth bin, a fifth bin, a sixth bin, a color tone detector, a classifying device, and a mounting device. The memory is to store a reference chromaticity data including a range of chromaticity for color tone classifying which includes a first color tone area and a second color tone area in which the first color tone area is provided. The first color tone bin, the first bin, the second bin, the third bin, the fourth bin, the fifth bin, and the sixth bin are provided to respectively correspond to the first color tone area and a first region through a sixth region. The color tone detector is configured to detect a color tone of each of a plurality of different color tone light emitting devices.

Abstract: In a method of manufacturing an illumination device, a color tone of each of a plurality of light emitting devices having different color tones is detected. In which region among a first region, a second region, a third region, a fourth region, a fifth region, and a sixth region on a chromaticity diagram the color tone of each of the plurality of light emitting devices is determined based on the detected color tone. The chromaticity diagram has a first color tone area and a second color tone area in which the first color tone area is provided. The second color tone area is divided into the first region through the sixth region. The plurality of light emitting devices are classified into the first region through the sixth region based on the determined color tone.

Abstract: In a method of manufacturing an illumination device, a color tone of each of a plurality of light emitting devices having different color tones is detected. In which region among a first region, a second region, a third region, a fourth region, a fifth region, and a sixth region on a chromaticity diagram the color tone of each of the plurality of light emitting devices is is determined based on the detected color tone. The chromaticity diagram has a first color tone area and a second color tone area in which the first color tone area is provided. The second color tone area is divided into the first region through the sixth region. The plurality of light emitting devices are classified into the first region through the sixth region based on the determined color tone.

Abstract: A rolling mill for metal foil includes a pair of work rollers having axes in parallel to each other for subjecting a sheet material being supplied therebetween to strip processing, two pairs of intermediate rollers arranged so that the intermediate rollers of each pair are in contact with one of the work rollers and have axes in parallel to the axis of the contacting work roller, and two pairs of backup rollers arranged so that the backup rollers of each pair are respectively in contact with one pair of the intermediate rollers. Each pair of intermediate rollers and the pair of backup rollers in contact with the pair of intermediate rollers impart roll load to the work roller in contact with the pair of intermediate rollers. The rolling mill enables the production of large-width metal foil too thin to be self-supportable in shape with ease and high precision.