Title:
LIGHT EMITTING DEVICE; AND MEDICAL SYSTEM, ELECTRONIC APPARATUS, AND INSPECTION METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/217670
Kind Code:
A1
Abstract:
A light emitting device (10) is provided with a light source (5) that releases primary light (6), a first phosphor (2) that absorbs the primary light (6) and converts the primary light (6) to first wavelength-converted light (7) with a wavelength greater than that of the primary light (6), and a second phosphor (3) that absorbs the primary light (6) and converts the primary light (6) to second wavelength-converted light (8) with a wavelength greater than that of the primary light (6). The first wavelength-converted light (7) is fluorescent light having light components across the entire wavelength range from 700 nm to 800 nm. The second wavelength-converted light (8) is fluorescent light with a peak where fluorescence intensity shows a maximum value within the wavelength range from 380 nm and above to below 700 nm. The first wavelength-converted light (7) has persistence time one-tenth longer than that of the second wavelength-converted light.
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Inventors:
ABE TAKESHI
OSHIO SHOZO
NITTA MITSURU
OSHIO SHOZO
NITTA MITSURU
Application Number:
PCT/JP2020/006523
Publication Date:
October 29, 2020
Filing Date:
February 19, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01S5/022; A61B1/00; A61B1/06; A61B1/07; G02B21/06; G02B23/26; H01L33/50
Domestic Patent References:
| WO2018207703A1 | 2018-11-15 | |||
| WO2018143198A1 | 2018-08-09 |
Foreign References:
| JP2006114911A | 2006-04-27 | |||
| JP2013239551A | 2013-11-28 | |||
| JP6461411B1 | 2019-01-30 | |||
| JP2018518046A | 2018-07-05 | |||
| JP2018515913A | 2018-06-14 | |||
| US20160287081A1 | 2016-10-06 | |||
| JP2007017986A | 2007-01-25 | |||
| JP2019082916A | 2019-05-30 |
Other References:
See also references of EP 3961826A4
Attorney, Agent or Firm:
ITO Masakazu et al. (JP)
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