Light-emitting device and lighting fixture
JP2025152909AActive Publication Date: 2025-10-10MARUWA
Patent Information
- Application Number
- JP2024055090
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2044-03-28
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Figure 2025152909000001_ABST
Abstract
To provide a light-emitting device that can adjust the color temperature with consideration for the circadian rhythm through mixed light of two types of light, and that satisfies the requirements for high color rendering Class 3.SOLUTION: The light-emitting device includes one or more LED elements and a plurality of phosphors, and emits high color temperature light having a color temperature of 7500 K or higher, and low color temperature light having a color temperature of 2000 K to 3000 K. The mixed light of the high color temperature light and the low color temperature light has an average color rendering index Ra of 95 or higher and a special color rendering index R9 of 75 or higher within a color temperature range from 2700 K to 7500 K, and has a melanopic ratio exceeding 1 at a color temperature of 6000 K or higher.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
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