Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Shunpei Fujii

Ryosuke Shigitani

Shozo Oshio

Mitsuru Nitta

Keiichi Yamazaki

Shinji Shibamoto

Chigusa Fujiwara

Tomokazu Kusunoki

A light emitting device includes: a first light emitting element that emits a first light component; a second light emitting element that emits a second light component; a first phosphor that emits a third light component; and a second phosphor that emits a fourth light component. A spectral distribution of the output light has a trough portion within a wavelength range of 650 nm or more and 750 nm or less, and a minimum intensity value within the wavelength range is less than 30% of a maximum intensity value within a wavelength range of 380 nm or more and 2500 nm or less.

Light emitting device and electronic instrument using the same

An optical filter includes a colloidal crystal layer including: a plurality of particles including at least one of an inorganic material or a resin material; and a binder disposed between the plurality of particles. The optical filter reflects a part of light in the wavelength range of 300 nm or more and less than 800 nm. A multiplex optical filter includes multiple optical filters. A light emitting device includes the optical filter and a light source, and a part of primary light emitted from the light source is transmitted through the optical filter.

Optical filter, multiplex optical filter, and light emitting device and illumination system using the same

A wavelength conversion particleused for a wavelength conversion memberis provided with a moth-eye structure sectionhaving a fine concavo-convex structure in the side of a surface of a fluorescent particle, and the fine concavo-convex structure is formed in fluorescent particleitself. Wavelength conversion memberis formed by dispersing wave-length conversion particle(s)into a translucent mediumhaving a smaller refraction index than fluorescent particleof wavelength conver-sion particle. Wavelength conversion memberis further provided with an antireflection sectionin the side of the surface of fluorescent particle. Antireflection sectioncomprises moth-eye structure sectionand translucent mediumentered between taper-shaped fine projectionsof moth-eye structure section. In a light emitting device, wavelength conversion memberis used as a color conversion member converting a part of light emitted from a LED chipinto light having a longer wave-length than the light emitted from LED chipand emitting the converted light.

Wavelength conversion particle, wavelength conversion member using same, and light emitting device

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Osaka, Japan

Shunpei Fujii