Light generating system comprising KSIF white and (OXY)nitride red LED packages
The light generating system addresses self-absorption issues by dividing luminescent materials across devices, achieving high CRI and tunable correlated color temperature through intensity control, enhancing efficiency and light quality.
WO2025157730A1 Publication Date: 2025-07-31SIGNIFY HOLDING BV
8 Cites 0 Cited by
Patent Information
- Application Number
- PCT/EP2025/051279
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-01-26
- Filing Date
- 2025-01-20
- Publication Date
- 2025-07-31
AI Technical Summary
Technical Problem
Existing light generating systems face challenges in achieving high Color Rendering Index (CRI) and tunable spectral power distributions while minimizing self-absorption of light by phosphors, which affects correlated color temperature and efficiency.
Method used
A light generating system comprising N first and M second light generating devices, each with specific luminescent converters and solid-state light sources, where luminescent materials are divided across devices to prevent self-absorption, allowing adjustment of correlated color temperature and CRI through intensity control.
Benefits of technology
The system achieves white light with a CRI of at least 80 and correlated color temperature between 2000-6500 K, with improved efficiency by minimizing self-absorption and enabling tunable spectral power distributions.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a light generating system (1000) configured to generate system light (1001), wherein the light generating system (1000) comprises N first light generating devices (110) and M second light generating devices (120), wherein: (A) each first light generating device (110) comprises a first light source (10) and a first luminescent converter (2100); (B) the first light source (10) is configured to generate first light source light (11); (C) the first luminescent converter (2100) comprises a first luminescent material (210) and a second luminescent material (220); the first luminescent material (210) is configured to convert part of the first light source light (11) into first luminescent material light (211) having a first luminescent material centroid wavelength (λlc1) selected from the range of 510-570 nm; the second luminescent material (220) is configured to convert part of the first light source light (11) into second luminescent material light (221) having a second luminescent material centroid wavelength (λlc2) selected from the range of 625-635 nm; (D) each first light generating device (110) is configured to generate first device light (111) having a spectral power distribution in the wavelength range of 380-780 nm with at maximum 30% of the spectral power provided by the first light source light (11) and at least 70% of the spectral power provided by the first luminescent material light (211) and the second luminescent material light (221); (E) each second light generating device (120) comprises a second light source (20) and a second luminescent converter (2200); (F) the second light source (20) is configured to generate second light source light (21); (G) the second luminescent converter (2200) comprises a third luminescent material (230); the third luminescent material (230) is configured to convert at least part of the second light source light (21) into third luminescent material light (231) having a third luminescent material centroid wavelength (λlc3) selected from the range of 600-660 nm; (H) each second light generating device (120) is configured to generate second device light (121) having a spectral power distribution in the wavelength range of 380-780 nm with at least 70% of the spectral power provided by the third luminescent material light (231) and at maximum 30% of the spectral power provided by the second light source light (21); and (I) in a first operational mode of the light generating system (1000), the system light (1001) is white light having a correlated color temperature in a range from 2000-6500 K and a color rendering index of at least 80.
Need to check novelty before this filing date? Find Prior Art