Title:
NEAR-INFRARED LIGHT-EMITTING DEVICE AND METHOD FOR ADJUSTING INTENSITY RATIO OF NEAR-INFRARED RAY AND VISIBLE RAY
Document Type and Number:
WIPO Patent Application WO/2023/204038
Kind Code:
A1
Abstract:
A near-infrared light-emitting device (100) comprises a solid-state light-emitting element (1) that emits blue primary light (10), a wavelength conversion body (2) for converting primary light to near-infrared wavelength-converted light (11), and an organic polymer member (3) that transmits mixed light (12) of the primary light and the wavelength-converted light, and the near-infrared light-emitting device (100) outputs mixed light transmitted through the organic polymer member as output light (130). The organic polymer member has a thickness of 3 µm to less than 300 µm and a light transmittance of less than 0.1% at a wavelength of 400 nm or less, a light transmittance at or below the emission peak wavelength of the primary light of less than 1%, a light transmittance of less than 30% at a wavelength of 500 nm or less, and a light transmittance of 75% to less than 100% in a wavelength range of 750 nm to less than 1100 nm, and the light transmittance in units of 10 nm in the wavelength range of 500-750 nm increases as the wavelength increases.
Inventors:
NITTA MITSURU
SHIGITANI RYOSUKE
OSHIO SHOZO
SHIGITANI RYOSUKE
OSHIO SHOZO
Application Number:
PCT/JP2023/014219
Publication Date:
October 26, 2023
Filing Date:
April 06, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G02B5/20; F21V3/00; F21V3/08; F21V3/12; F21V9/00; F21V9/08; F21V9/32; H01L33/50; F21Y115/10; F21Y115/30
Foreign References:
| US20210296294A1 | 2021-09-23 | |||
| US20200012179A1 | 2020-01-09 | |||
| JP2008167792A | 2008-07-24 | |||
| KR20220059209A | 2022-05-10 |
Attorney, Agent or Firm:
MORI Futoshi et al. (JP)
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