Abstract: A light-emitting device including a solid-state light source that emits light having a peak wavelength in the range of 480 nm or less and a fluorescent film that covers the solid-state light source and includes at least one kind of phosphor, wherein the fluorescent film includes at least one kind of near-infrared phosphor that is excited by light from the solid-state light source, has a peak wavelength in the range exceeding 700 nm, and has an emission spectrum with a full width at half maximum of 100 nm or more in a range including the peak wavelength.

Abstract: A broadband light-emitting device is composed of a substrate, a solid light source that is installed on a front face of the substrate and emits light at an upper face thereof, a near-infrared fluorescent material disposed in direct contact with the front face of the substrate in the vicinity of the solid light source, and a visible light fluorescent material disposed on a region ranging from the upper face of the solid light source to an upper face of the near-infrared fluorescent material. Besides, the near-infrared fluorescent material contains fluorescent particles exhibiting fluorescence in a near-infrared wavelength band with a peak wavelength of 700 nm and a wavelength width at half maximum of 100 nm or greater.

Abstract: A broadband light-emitting device is composed of a substrate, a solid light source that is installed on a front face of the substrate and emits light at an upper face thereof, a near-infrared fluorescent material disposed in direct contact with the front face of the substrate in the vicinity of the solid light source, and a visible light fluorescent material disposed on a region ranging from the upper face of the solid light source to an upper face of the near-infrared fluorescent material. Besides, the near-infrared fluorescent material contains fluorescent particles exhibiting fluorescence in a near-infrared wavelength band with a peak wavelength of 700 nm and a wavelength width at half maximum of 100 nm or greater.

Abstract: A light-emitting device including a solid-state light source that emits light having a peak wavelength in the range of 480 nm or less and a fluorescent film that covers the solid-state light source and includes at least one kind of phosphor, wherein the fluorescent film includes at least one kind of near-infrared phosphor that is excited by light from the solid-state light source, has a peak wavelength in the range exceeding 700 nm, and has an emission spectrum with a full width at half maximum of 100 nm or more in a range including the peak wavelength.