Japan Atomic Energy Agency

Fujikura Limited

Japan Atomic Energy Research Institute

Kabushiki Kaisha Toshiba

Kawasaki Jukogyo Kabushiki Kaisha

Kuraray Co., Ltd.

Advanced Technology Company, LLC

Kiyoshi Oka

Takashi Tsumanuma

Kenichi Nakatate

Tomoaki Toriya

Osamu Shinji

Seiichiro Kimura

Eisuke Tada

Yuuji Takiguchi

Katashi Saito

Akiyoshi Hayakawa

Akiko Sakurai

Kouichi Tuji

Takao Wakabayashi

Tetsuro Nishimura

Junji Yoshino

Tadashi Ogawa

Masahiro Edaya

Nami Sasaki

Takashi Ishii

Toshio Osaki

Yasunori Ozaki

Disclosed is a composite optical fiber which has high flexibility and is hard to break. The composite optical fiber comprises a larger-diameter optical fiber and smaller-diameter optical fibers each having a smaller diameter than that of the larger-diameter optical fiber, wherein the larger-diameter fiber and the smaller-diameter optical fibers are so arranged that the larger-diameter fiber is surrounded by the smaller-diameter optical fibers, and the smaller-diameter optical fibers that surround the larger-diameter optical fiber are made from a plastic material.

Composite optical fiber and method of manufacturing the same

A small bowel endoscopic system of an ileus tube type using a monolithic composite optical fiber that can be applied with an ileus tube employed to administer a contrast agent or the like to a patient suffering from ileus and which is an integral assembly of a large-diameter optical fiber with a core/cladding structure intended for laser light transmission and a multi-core image fiber section surrounding that optical fiber to enable image transmission.

Small bowel endoscope of ileus tube type that enables laser inspection and therapy

An image capturing apparatus for capturing the image of the physical object and displaying the captured image is provided for combining and displaying in real time the shape-distorted graded scale with the captured image, the apparatus comprising a graded scale generating part for generating the graded scale to be used for indicating the dimension of the physical object in the captured image; a data storing part for storing the data for correction to be used in order to correct the graded scale shape by adding the distortion to the generated graded scale in the similar degree to the distortion caused by the distortion aberration; a graded scale shape correcting part for generating the shape-distorted graded scale by correcting the graded scale shape according to the data for correction; and an image combining part for combining the generated shape-distorted graded scale with the captured image, and displays the captured image combined with the shape-distorted graded scale.

Image capturing apparatus, image displaying method and recording medium, image displaying program being recorded thereon

Endoscopic systemcomprises composite optical fiberthat consists of a large-diameter, laser light transmitting optical fiber surrounded by a large number of image transmitting fibers that are bundled together to form an integral assembly with the central fiber, laser applying and image observing optical unitthat is connected to the eyepiece portion of said composite optical fiber such that it launches laser light into said large-diameter optical fiber and that the image being transmitted through said image transmitting optical fiber is focused on a camera to become observable, and an illuminating light transmitting unit that transmits illuminating light to the tip of the objective portion of said composite optical fiber for irradiation purposes.

Endoscopic system using an extremely fine composite optical fiber

An in-pipe work device comprising at least two movement mechanisms connected with each other in a longitudinal direction of a pipe by a flexible tube, and a control device for controlling the movement mechanisms, the movement mechanisms including a body connected to the flexible tube, a guide member installed on the body such that the guide member is slidable in an axial direction, a support leg drive mechanism provided on the guide member and having a support leg movable in a radial direction of the pipe, for pressing the support leg against an inner wall of the pipe, thereby to hold the guide member kept unmovable in an axis direction of the pipe, a slide mechanism for relatively sliding the guide member and the body, with the support leg pressed against the inner wall of the pipe, thereby to slide the body in the axis direction of the pipe, wherein the control device controls the in-pipe movement device so as to move in a pipe by itself, by sequentially operating the plurality of movement mechanism in a predetermined order.

In-pipe work apparatus

Growing community of inventors

Naka-gun, Japan

Kiyoshi Oka