Light-emitting device and light source device
AssigneeNichia Corporation
InventorsShunsuke ASHIDA, Atsushi BANDO
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AssigneeNichia Corporation
InventorsShunsuke ASHIDA, Atsushi BANDO
Estimating the term…
Provided is a light-emitting device capable of improving discernibility of letters or the like when used by a person with reduced visual sensitivity to blue light. The light-emitting device comprises a light-emitting element emitting light having an emission peak wavelength in a range of 440 nm to 470 nm, and a wavelength conversion member including a plurality of phosphors emitting light when excited by the light from the light emitting element. Ratios of luminous intensities of the light emitted from the light emitting device at wavelengths 480 nm, 530 nm, and 550 nm to the luminous intensity at the peak emission wavelength attributed to the light emitting element in an emission spectrum are 0.05 to 0.20, 0.20 to 0.35, and 0.23 to 0.38, respectively.
A light emitting device, comprising:
Dependencies are inferred from the claim text.