Title:
WAVELENGTH CONVERTING DEVICE, AND ILLUMINATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/027144
Kind Code:
A1
Abstract:
Provided is a wavelength converting device with which color separation can be suppressed and light extraction efficiency can be improved, and with which a light distribution can be adjusted. This wavelength converting device comprises: a plate-shaped wavelength converting body which has a light receiving surface and a light emitting surface, which generates wavelength-converted light by converting the wavelength of incident light that is incident from the light receiving surface, and which emits the wavelength-converted light from the light emitting surface; and a plurality of antennas disposed on the light emitting surface of the wavelength converting body. In a first region of the light emitting surface, the plurality of antennas form an antenna array in which the plurality of antennas are each arranged with a predetermined period, and in a second region other than the first region, there is no antenna array. The length of an incident light optical path, from the light receiving surface to the light emitting surface, that leads to the light emitting surface in the first region is greater than the length of an incident light optical path, from the light receiving surface to the light emitting surface, that leads to the light emitting surface in the second region.
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Inventors:
YOKOBAYASHI YUSUKE (JP)
KAWAKAMI YASUYUKI (JP)
MAEMURA YOSUKE (JP)
MURAI SHUNSUKE (JP)
KAWAKAMI YASUYUKI (JP)
MAEMURA YOSUKE (JP)
MURAI SHUNSUKE (JP)
Application Number:
PCT/JP2022/032040
Publication Date:
March 02, 2023
Filing Date:
August 25, 2022
Export Citation:
Assignee:
UNIV KYOTO (JP)
STANLEY ELECTRIC CO LTD (JP)
STANLEY ELECTRIC CO LTD (JP)
International Classes:
F21V9/40; F21S2/00; F21V9/30; F21Y115/10; F21Y115/30
Foreign References:
| JP2020012939A | 2020-01-23 | |||
| JP2021021906A | 2021-02-18 | |||
| US20200203585A1 | 2020-06-25 |
Attorney, Agent or Firm:
LEXT, P.C. (JP)
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