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AssigneesKyoto University, Stanley Electric Co., Ltd.
InventorsRyosuke Kamakura, Yasuyuki Kawakami, Yosuke Maemura, Keijiro Takashima, Shunsuke Murai
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A wavelength conversion device includes a flat plate-shaped phosphor portion, a first nanoantenna group, a translucent body portion, and a second nanoantenna group. The flat plate-shaped phosphor portion includes a phosphor to be excited by an excitation light to emit a fluorescence. The first nanoantenna group is provided at a lower surface side of the phosphor portion and includes a plurality of first metal nanoantennas arranged at a first pitch. The translucent body portion is filled between adjacent first nanoantennas, formed on the lower surface of the phosphor portion to cover the lower surface of the phosphor portion, and made of a translucent material. The second nanoantenna group is provided on an upper surface of the phosphor portion and includes a plurality of second metal nanoantennas arranged at a second pitch on the upper surface of the phosphor portion.
An illumination device comprising:
A wavelength conversion device comprising:
Dependencies are inferred from the claim text.