Toshinobu Otsubo

Title: Innovations of Toshinobu Otsubo

Introduction

Toshinobu Otsubo is a prominent inventor based in Atsugi, Japan. He has made significant contributions to the field of optical technology, holding a total of 10 patents. His work focuses on advanced measurement apparatuses that enhance the capabilities of optical elements.

Latest Patents

One of his latest inventions is a delay time measurement apparatus for optical elements. This apparatus includes a pulse light source, a wavelength setting unit, an optical power divider, an optical delay unit, a controller, and a detector. The pulse light source can vary the wavelength of light output and generates optical pulses with a predetermined repetition period. The optical power divider splits the optical pulse into two, which are then input to the optical element being measured. The optical delay unit adjusts the spatial optical path length for one of the pulses, allowing for precise measurement of the delay time of light passing through the optical element.

Another notable patent is an optical sampling waveform measuring apparatus designed to achieve a wider bandwidth. This invention utilizes a nonlinear optical crystal composed of 2-adamantyl-5-nitropyridine (AANP) to facilitate type 2 phase matching between sampling light and measuring object light. The control portion of the apparatus manages the polarization direction of the sampling light to ensure optimal performance, even with varying wavelengths.

Career Highlights

Toshinobu Otsubo has worked with notable companies such as Anritsu Corporation and Nippon Telegraph and Telephone Corporation. His experience in these organizations has contributed to his expertise in optical technologies and innovations.

Collaborations

Throughout his career, Otsubo has collaborated with esteemed colleagues, including Akihito Otani and Hidehiko Takara. These partnerships have fostered a collaborative environment that has led to significant advancements in their respective fields.

Conclusion

Toshinobu Otsubo's contributions to optical technology through his patents and collaborations highlight his innovative spirit and dedication to advancing the field. His work continues to influence the development of optical measurement techniques.