Hisatoshi Fujiwara

Title: Hisatoshi Fujiwara: Innovator in Measurement and Input Technologies

Introduction

Hisatoshi Fujiwara is a notable inventor based in Tokyo, Japan. He has made significant contributions to the fields of measurement and input technologies. With a total of 3 patents, his work reflects a commitment to innovation and precision.

Latest Patents

One of Hisatoshi Fujiwara's latest patents is a surface shape measuring system. This system utilizes a grating that faces the measurement target surface of an object. A light source irradiates the grating with illumination light, while a camera captures a moire fringe image formed on the grating by light passing through it and reflected by the measurement target surface. The system includes a moving means that changes the distance between the grating and the measurement target surface. An analyzing means performs an analysis process to obtain 3-D shape information of the measurement target surface from the image captured by the camera in at least two cases with different distance settings. This innovation effectively eliminates measurement errors caused by the inclination of the measurement target surface.

Another significant patent by Fujiwara is a fingerprint input apparatus. This apparatus consists of a prism, a light source, a pinhole, and an imaging plane. The prism is positioned so that one of its surfaces serves as a fingerprint collection surface. The light source irradiates light onto this surface through the prism. The pinhole is strategically placed in the path of light reflected by the finger's pattern on the collection surface. The light that emerges from the prism and passes through the pinhole is then formed into an image on the imaging plane. This design allows for an optical fingerprint collection surface that is substantially parallel to the imaging plane.

Career Highlights

Throughout his career, Hisatoshi Fujiwara has worked with prominent companies such as Yamatake Corporation and Yamatake-Honeywell Co., Ltd. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Hisatoshi has collaborated with notable individuals in his field, including Toru Yoshizawa and Yukitoshi Otani. These collaborations have likely enriched his work and led to further advancements in technology.

Conclusion

Hisatoshi Fujiwara's contributions to measurement and input technologies demonstrate his innovative spirit and dedication to precision. His patents reflect a deep understanding of the challenges in these fields and offer solutions that enhance functionality and accuracy.