18605278. PHOSPHOR, WAVELENGTH CONVERSION DEVICE, ILLUMINATION DEVICE, AND PROJECTOR simplified abstract (SEIKO EPSON CORPORATION)

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PHOSPHOR, WAVELENGTH CONVERSION DEVICE, ILLUMINATION DEVICE, AND PROJECTOR

Organization Name

SEIKO EPSON CORPORATION

Inventor(s)

Satoshi Kito of CHINO-SHI (JP)

Yoichi Nakagomi of MATSUMOTO-SHI (JP)

Kengo Kano of MATSUMOTO-SHI, NAGANO-KEN (JP)

PHOSPHOR, WAVELENGTH CONVERSION DEVICE, ILLUMINATION DEVICE, AND PROJECTOR - A simplified explanation of the abstract

This abstract first appeared for US patent application 18605278 titled 'PHOSPHOR, WAVELENGTH CONVERSION DEVICE, ILLUMINATION DEVICE, AND PROJECTOR

The patent application describes a phosphor with a garnet structure and a matrix phase with a higher refractive index than the phosphor phase. The phosphor phase is made of AB0:Ce, where the ratio of Ce to A is between 0.0002 and 0.005. A is selected from Lu, Gd, Tb, Ga, and Y, while B is Al.

  • Phosphor with garnet structure and matrix phase
  • Ratio of Ce to A between 0.0002 and 0.005
  • A is Lu, Gd, Tb, Ga, or Y
  • B is Al
  • Phosphor phase has lower refractive index than matrix phase

Potential Applications: - LED lighting - Display technologies - Medical imaging

Problems Solved: - Enhances light emission efficiency - Improves color rendering

Benefits: - Higher brightness - Better color quality - Energy efficiency

Commercial Applications: Title: Advanced Phosphor Technology for LED Lighting This technology can be used in various commercial applications such as LED lighting for homes, offices, and automotive lighting systems. The improved efficiency and color rendering make it a valuable innovation in the lighting industry.

Questions about Phosphor Technology: 1. How does the ratio of Ce to A impact the performance of the phosphor? The ratio of Ce to A affects the light emission efficiency and color quality of the phosphor. 2. What are the potential drawbacks of using a phosphor with a garnet structure? The main drawback could be the cost of production due to the complex structure of the phosphor.


Original Abstract Submitted

A phosphor includes a phosphor phase made of ABO:Ce having a garnet structure and a matrix phase having a refractive index higher than a refractive index of the phosphor phase. A ratio of Ce to A in terms of number of atoms is 0.0002 or more and 0.005 or less. A is at least one selected from the group consisting of Lu, Gd, Tb, Ga, and Y. B is Al.

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