LIGHT EMITTING DEVICE

Number of patents in Portfolio can not be more than 2000

United States of America

SERIAL NO

16424898

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A light emitting device includes: a light emitting element having an emission peak wavelength in a range of 430 nm to 470 nm; and a fluorescent member including a fluorescent material that is excited by light from the light emitting element for light emission, wherein a mixture of light from the light emitting element and light from the fluorescent material has a correlated color temperature in a range of 1500 K to 11000 K, as measured according to JIS Z8725, the color deviation duv that is a deviation from the black body radiation track on the CIE1931 chromaticity diagram of the mixture of light and is measured according to JIS Z8725 falls within a range of more than 0 to 0.02 or less at a correlated color temperature of 1500 K to 11000 K, and when a value calculated by integrating a product of the spectral distribution of the mixture of light and each relative intensity of a human standard spectral luminous efficiency over a wavelength range of a human visible region is referred to as an integral value a and when a value calculated by integrating a product of the spectral distribution of the mixture of light and each relative intensity of an insect spectral luminous efficiency over a wavelength range where insects exhibit positive phototaxis is referred to as an integral value b, the insect attracting index I defined as a ratio of the integral value b to the integral value a (b/a) is 50% or more and 99% or less of the insect attracting index I0 at the time when the color deviation duv is 0.

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Patent Owner(s)

Patent OwnerAddress
NICHIA CORPORATION491-100 OKA KAMINAKA-CHO ANAN-SHI TOKUSHIMA 7748601 ?7748601

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
ASAI, Kenji Naruto-shi, JP 28 118
FUJIO, Kazushige Tokushima-shi, JP 9 1

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