Invention Application
- Patent Title: HIGH INTENSITY LIGHT SOURCE WITH HIGH CRI FOR LOW CTT USING GREEN LASER PUMPED PHOSPHOR
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Application No.: PCT/EP2021/060243Application Date: 2021-04-20
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Publication No.: WO2021219442A1Publication Date: 2021-11-04
- Inventor: HIKMET, Rifat, Ata, Mustafa , VAN BOMMEL, Ties , VDOVIN, Olexandr, Valentynovych , VAN ASSELT, Robert , CORNELISSEN, Hugo, Johan
- Applicant: SIGNIFY HOLDING B.V.
- Applicant Address: High Tech Campus 48
- Assignee: SIGNIFY HOLDING B.V.
- Current Assignee: SIGNIFY HOLDING B.V.
- Current Assignee Address: High Tech Campus 48
- Agency: MALLENS, Erik, Petrus, Johannes et al.
- Priority: EP20172315.2 2020-04-30
- Main IPC: C09K11/77
- IPC: C09K11/77 ; C09K11/88 ; C09K11/08 ; H05B33/14 ; F21K9/60 ; H01L33/50
Abstract:
The invention provides a light generating device (1000) configured to generate device light (1001), wherein the light generating device (1000) comprises a first light source (110), a second light source (120), and a first luminescent material (210), wherein: the first light source (110) is configured to generate blue first light source light (111) having a first peak wavelength λ1 selected from the spectral wavelength range of 440- 480 nm, wherein the first light source (110) is a first laser light source (10); the second light source (120) is configured to generate green second light source light (121) having a second peak wavelength λ2 selected from the spectral wavelength range of 495-570 nm, wherein the second light source (120) is a second laser light source (20); the first luminescent material (210) is configured to convert part of the second light source light (121) into first luminescent material light (211) having a first luminescent material dominant wavelength λdL1 in the spectral wavelength range of 575-605 nm; the light generating device (1000) is configured to provide in a first operational mode white device light (1001) comprising the first light source light (111), the second light source light (121), and the first luminescent material light (211), with a correlated color temperature selected from the range of equal to or smaller than 3200 K and a color rendering index of equal to or larger than 80.
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