Kenji Araki

Title: Kenji Araki: Innovator in Lighting Technology

Introduction

Kenji Araki is a notable inventor based in Yokosuka, Japan. He has made significant contributions to the field of lighting technology, holding a total of 3 patents. His work focuses on improving the efficiency and functionality of lighting devices, particularly in the realm of inverters and discharge lamps.

Latest Patents

One of Kenji Araki's latest inventions is an inverter having a frequency changing function. This invention suppresses the occurrence of interference in a very short period to prevent device destruction. The inverter circuit includes a crystal oscillator, which oscillates at a fixed frequency, a load-status detector that receives voltage and current to be applied to a load, and a voltage-controlled oscillator that oscillates at a frequency corresponding to the load status detected. Additionally, a switch selects the output of either the crystal oscillator or the voltage-controlled oscillator to supply the selected output to the load. An electrodeless discharge lamp lighting device utilizes this inverter circuit.

Another significant patent is for a low pressure discharge lamp apparatus. This apparatus features a low pressure discharge lamp with an arc tube that has electrodes defining a discharge space. The arc tube is sealed with a mercury/rare gas mixture. The lighting circuit apparatus lights the lamp by supplying a current with a polarity reversed for each half cycle to the electrodes. The current waveform has a flat peak for each half cycle, and the maximum current value is restricted to prevent saturation of mercury atom excitation.

Career Highlights

Kenji Araki has worked with prominent companies in the lighting industry, including Toshiba Lighting & Technology Corporation and Kabushiki Kaisha Toshiba. His experience in these organizations has allowed him to develop innovative solutions that enhance lighting technology.

Collaborations

Throughout his career, Kenji has collaborated with talented individuals such as Mitsuhiro Matsuda and Keiichi Shimizu. These collaborations have contributed to the advancement of his inventions and the overall progress in the field of lighting technology.

Conclusion

Kenji Araki's contributions to lighting technology through his patents and collaborations highlight his innovative spirit and dedication to improving device functionality. His work continues to influence the industry and pave the way for future advancements.