Hitachi, Ltd.

Hitachi Medical Corporation

National Institute of Radiological Sciences

Spectratech Inc.

Tokai University

Yoshitoshi Ito

Fumio Kawaguchi

Yuichi Yamashita

Atsushi Maki

Kunio Harada

Hironori Ueki

Shin-ichiro Umemura

Miyuki Kono

Takafumi Miyatake

Hideaki Koizumi

Tsuyoshi Yamamoto

Kazuo Takeda

Keiichi Nagai

Katsumi Takami

Hideki Kambara

Yasuhiro Mitsui

Hiroshi Takeuchi

Chusuke Munakata

Noriaki Honma

Munetaka Haida

Minoru Yoshida

Kanji Kato

Shusaku Nagahara

Shigeharu Kimura

Yukiko Hirabayashi

Yuzo Taniguchi

Tetsuo Nishikawa

Akira Hashimoto

Hiroto Nagatomo

Hideji Fujii

Hiroyuki Kohida

Eiichi Tanaka

Tatsuo Goto

Kenji Ishimatsu

Tomoaki Sumitani

Atomi Noguchi

Kyo Suda

Kiyoo Takeyasu

Kazuhiro Yoshida

Katsuhiro Mizuno

Mitsuo Ohashi

Kanji Kinameri

Shinobu Hase

Yuji Takahashi

Yukito Shinohara

Takahumi Miyatake

Mikihito Saito

Adi Bonen

Yoozoo Oouchi

Morikazu Ayugai

A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.

Personal identification system

In an optical measurement system and imaging method adapted to measure in vivo information in a living body without harming the living body, light rays of a plurality of wavelengths which are modulated in intensity with a plurality of different frequencies are irradiated on a plurality of irradiation positions on the surface of a living body, and time-variable changes in living body transmitting light intensity levels corresponding to the respective wavelengths and the respective irradiation positions are measured at different positions on the surface of the living body. Light is utilized to image the results of the measurements, in which the measuring time is shortened by estimating fluctuation attributable to the living body, and the presence or absence of a change in measured signal can be decided easily by displaying an estimation signal and a measured signal at a time.

Optical system for measuring metabolism in a body and imaging method

A light emission section includes light generators which are operated on the basis of drive signals from a controller so as to emit near infrared interferable light beams having different specific wavelengths to a light interference section. The light interference section includes a beam splitter having a low-reflection region. The beam splitter allows a most portion of the near infrared interferable light beams to propagate toward an object to be examined, and reflects a portion of the near infrared interferable light beams to a movable mirror. The beam splitter causes interference between measurement light reflected by the object and reference light reflected by the movable mirror, and the resultant interference light propagates to a light detection section. The light detection section receives the interference light and calculates predetermined information regarding the object by making use of the quantity distribution of the interference light. A display section displays the calculated information.

Optical interference apparatus

Growing community of inventors

Ome, Japan

Yoshitoshi Ito