Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Shinji Shibamoto

Shozo Oshio

Keiichi Yamazaki

Shunpei Fujii

Tomokazu Kusunoki

A light-emitting deviceaccording to the present invention includes: a solid-state light-emitting elementthat radiates laser light; and a wavelength converterincluding plural types of phosphors which receive the laser light and radiate light. The phosphors included in the wavelength converterare substantially composed of Ce-activated phosphors. The above-described light-emitting device includes at least a warm-color Ce-activated phosphor that receives the laser light and radiates light having a light emission peak within a wavelength range of 580 nm or more to less than 660 nm, and light-emitting components radiated by the phosphors are composed of only light-emitting components derived from Ce.

Light-emitting device

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.

Growing community of inventors

Osaka, Japan

Shinji Shibamoto