Daiichiro Tanaka

Title: Daiichiro Tanaka: Innovator in Acoustic Measurement and Lighting Technology

Introduction

Daiichiro Tanaka is a prominent inventor based in Sakura, Japan. He has made significant contributions to the fields of acoustic measurement and lighting technology. With a total of 7 patents to his name, Tanaka's work reflects a commitment to innovation and excellence.

Latest Patents

Tanaka's latest patents include a method of measuring acoustic distribution and a distributed acoustic sensor. This innovative method involves outputting optical pulses from a light source to an optical fiber at a selected emission wavelength. The reflection light, which is reflected at a fiber Bragg grating, is received at an optical receiver and converted into a reflection signal. The signal processing unit identifies the fiber Bragg grating when the intensity of the reflection signal exceeds a predetermined threshold value. The measurement process calculates acoustic frequencies at the fiber Bragg grating based on the temporal change of the reflection signal's intensity, allowing for a detailed determination of acoustic distribution along the fiber.

Another notable patent is for a phosphor and an incandescent lamp color light emitting diode lamp. This invention features a semiconductor blue light emitting diode chip and a phosphor that absorbs light emitted from the diode chip, emitting light at a different wavelength. The phosphor is represented by a general formula of M(Si, Al)(O, N):Eu, with the main phase being an α-SiAlON phosphor. The diode lamp produces light with a unique emission color, defined by specific chromaticity coordinates on the XYZ chromaticity diagram.

Career Highlights

Throughout his career, Daiichiro Tanaka has worked with esteemed organizations such as Fujikura Limited and the National Institute for Materials Science. His experience in these institutions has allowed him to develop and refine his innovative ideas, contributing to advancements in technology.

Collaborations

Tanaka has collaborated with notable coworkers, including Masashi Ikeda and Masakazu Nakayama. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Daiichiro Tanaka's contributions to acoustic measurement and lighting technology exemplify his innovative spirit and dedication to advancing these fields. His patents and collaborations highlight the impact of his work on modern technology.