This inventor holds 10 USPTO granted patents. Top assignee: Ando Electric Company. Active years: 2000-2005.
Company Filing History:
Years Active: 2000-2005
Title: Seiji Funakawa: Innovator in Wavelength-Variable Light Source Technology
Introduction
Seiji Funakawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, particularly in the development of wavelength-variable light source apparatuses. With a total of 10 patents to his name, Funakawa continues to push the boundaries of innovation in his field.
Latest Patents
One of Funakawa's latest inventions is the wavelength-variable light source apparatus. This apparatus features a wavelength calibration function for the emitted light. It includes a semiconductor laser light source section, an external resonance section with a reflection surface for resonating emitted light at a predetermined wavelength, and a drive section that adjusts the position of the reflection surface to vary the external resonance condition. Additionally, a control section manages the movement of the reflection surface based on the absorption wavelength detected by a wavelength detection section, which utilizes a gas cell with specific wavelength absorption characteristics.
Another notable patent is the wavelength measurement apparatus. In this invention, light whose wavelength is continuously swept is directed onto a fiber-optic Etalon. The Etalon transmits the light when specific conditions are met, and a photodetector (PD) detects the transmitted light, outputting its intensity. A counter counts the peaks of the PD output, while a CPU calculates the wavelength of the light based on the counter's count value.
Career Highlights
Seiji Funakawa is currently employed at Ando Electric Company, where he applies his expertise in optical technologies. His work has been instrumental in advancing the capabilities of wavelength-variable light sources and measurement systems.
Collaborations
Funakawa collaborates with notable colleagues, including Nobuaki Ema and Tohru Mori. Their combined efforts contribute to the innovative projects at Ando Electric Company.
Conclusion
Seiji Funakawa's contributions to optical technology, particularly in wavelength-variable light sources, highlight his role as a leading inventor in the field. His patents reflect a commitment to advancing technology and improving measurement systems.