Optical filter and light-emitting device

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United States of America

PATENT NO 12099221
SERIAL NO

17286884

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An optical filter includes a transmission portion transmitting light and an absorption portion absorbing light between a plane of incidence and a plane of emission, and the volume of the transmission portion is larger than the volume of the absorption portion. For the optical filter, when the transmission spectrum S0 of light incident at an incidence angle of 0° and the transmission spectrum S60 of light incident at an incidence angle of 60° are superimposed, the transmittance (%) at an incidence angle of 60° is lower than the transmittance (%) at an incidence angle of 0° by 15% or more for a first wavelength band, and the difference between the transmittance (%) at an incidence angle of 60° and the transmittance (%) at an incidence angle of 0° is 10% or less for a second wavelength band.

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Patent Owner(s)

Patent OwnerAddress
DEXERIALS CORPORATION1724 SHIMOTSUBOYAMA SHIMOTSUKE-SHI TOCHIGI 3230194 ?3230194

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kajiya, Shunichi Tokyo, JP 56 317
Noda, Kazuhiko Tokyo, JP 41 130
Sakurai, Kyoko Tokyo, JP 14 19
Tazawa, Hiroshi Tokyo, JP 50 656

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