Panasonic intellectual property management co., ltd. (20240128413). WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE PROVIDED THEREWITH simplified abstract

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WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE PROVIDED THEREWITH

Organization Name

panasonic intellectual property management co., ltd.

Inventor(s)

Mitsuru Nitta of Kyoto (JP)

Ryosuke Shigitani of Osaka (JP)

Emi Miyazaki of Osaka (JP)

Toru Hirano of Osaka (JP)

WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE PROVIDED THEREWITH - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240128413 titled 'WAVELENGTH CONVERTER AND LIGHT EMITTING DEVICE PROVIDED THEREWITH

Simplified Explanation

The patent application describes a wavelength converter that includes a phosphor ceramic with two types of phosphors emitting fluorescence due to different transitions. The ceramic has a unique concave and convex structure, with one phosphor arranged in the concave parts. This converter is used in a light-emitting device with a solid-state light source emitting light within a specific wavelength range.

  • Phosphor ceramic with two types of phosphors emitting fluorescence
  • Unique concave and convex structure of the ceramic
  • One phosphor arranged in the concave parts
  • Used in a light-emitting device with a specific wavelength range of emitted light

Potential Applications

The technology can be applied in:

  • LED lighting
  • Display screens
  • Medical devices

Problems Solved

  • Efficient conversion of light wavelengths
  • Enhanced color rendering
  • Improved energy efficiency

Benefits

  • Better light quality
  • Energy savings
  • Longer lifespan of light-emitting devices

Potential Commercial Applications

Optimizing Light Quality with Phosphor Ceramic Wavelength Converter

Possible Prior Art

Prior art may include:

  • Phosphor-based wavelength converters
  • Light-emitting device technologies

Unanswered Questions

How does the concave and convex structure of the phosphor ceramic enhance the performance of the wavelength converter?

The unique structure of the ceramic may play a role in improving light conversion efficiency and distribution.

What specific applications in the medical field could benefit from this technology?

Medical imaging devices and surgical lighting could potentially benefit from the improved color rendering and energy efficiency provided by this technology.


Original Abstract Submitted

provided is a wavelength converter including a phosphor ceramic containing a first phosphor that emits fluorescence due to a parity-forbidden transition, and a phosphor part containing a second phosphor that emits fluorescence due to a parity-allowed transition. a main surface of the phosphor ceramic has a concave and convex structure including a plurality of convex parts and a plurality of concave parts. the phosphor part is arranged inside the plurality of concave parts in the phosphor ceramic. also provided is a light emitting device including the wavelength converter, and a solid-state light source that emits light with which the wavelength converter is irradiated and which has a light emission peak within a wavelength range of 400 nm or more and less than 500 nm.