Wavelength conversion device and illumination device
AssigneesStanley Electric Co., Ltd., Kyoto University
InventorsYosuke MAEMURA, Ryosuke KAMAKURA, Shunsuke MURAI
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Abstract
A wavelength conversion device includes a phosphor member and a plurality of nanoantennas. The phosphor member has one surface on which an excitation light is incident, includes a phosphor excited by the excitation light to emit a fluorescence, and has an uneven structure on another surface in an opposite side of the one surface. The uneven structure includes a plurality of projecting portions each provided in one direction along the other surface at a pitch smaller than a peak wavelength of the fluorescence. The plurality of nanoantennas are provided at upper surfaces of the plurality of projecting portions and made of a metal material.
Claims9
A wavelength conversion device comprising:
- a phosphor member that has one surface on which an excitation light is incident, includes a phosphor excited by the excitation light to emit a fluorescence, and has an uneven structure on another surface in an opposite side of the one surface, the uneven structure including a plurality of projecting portions each provided in one direction along the other surface at a pitch smaller than a peak wavelength of the fluorescence;
- and
- a plurality of nanoantennas provided at upper surfaces of the plurality of projecting portions and made of a metal material.
Dependencies are inferred from the claim text.