Hideaki Kiryu

Title: The Innovations of Hideaki Kiryu

Introduction

Hideaki Kiryu is a prominent inventor based in Takatsuki, Japan. He has made significant contributions to the field of lighting technology, particularly in the development of metal halide lamps for automobiles. With a total of 11 patents to his name, Kiryu's work has had a lasting impact on the industry.

Latest Patents

One of Kiryu's latest innovations is a metal halide lamp designed specifically for automobile headlights. This lamp features an arc tube that contains a pair of tungsten electrodes at both ends, with a metal halide as the main component of the luminescent material and xenon gas as a buffer gas. The tungsten electrodes are formulated to contain no more than 0.4 wt % of thorium oxide, while the metal halide includes scandium iodide. The xenon gas is sealed in the arc tube at a pressure of at least 0.4 MPa. This design allows for a long-life metal halide lamp that achieves improved lumen maintenance and other life characteristics during over 2000 hours of lighting.

Another notable patent is for a mercury-free metal-halide lamp. In this design, a pair of electrodes is placed within an arc tube, ensuring that the current density (I/S) is 20 (A/mm²) or less. This configuration allows for a long lamp life without causing an increase in lamp voltage or blackening of the arc tube due to electrode evaporation during extended operation.

Career Highlights

Kiryu is currently employed at Matsushita Electric Industrial Co., Ltd., where he continues to innovate in the field of lighting technology. His work has not only advanced the performance of automotive lighting but has also contributed to more environmentally friendly solutions in the industry.

Collaborations

Throughout his career, Kiryu has collaborated with notable colleagues such as Kiyoshi Takahashi and Mamoru Takeda. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Hideaki Kiryu's contributions to the field of lighting technology, particularly through his innovative patents, have established him as a key figure in the industry. His work continues to influence the future of automotive lighting solutions.