Utsunomiya University

National Institute of Advanced Industrial Science and Technology

Rion Company Ltd.

Daisuke Barada

Takashi Fukuda

Takeshi Nakagawa

Hirobumi Ushijima

Nobuko Fukuda

Kaoru Tamada

Jun Young Kim

Kiyonobu Tamura

Kyoko Tsuji

A three-dimensional shape data production method and a system for the same for realizing contactless receiving of data regarding the inner shape of a tubular body which includes a step of generating multiple pieces of two-dimensional image data based on a signal from an image capturing device configured to be movable inside a tubular body and configured to capture an image of the inside of the tubular body; a step of receiving space information on the image capturing device upon image capturing by the image capturing device based on a signal from a motion sensor placed at the image capturing device; and a step of associating the two-dimensional image data and the space information with each other and generating three-dimensional shape data of the inside of the tubular body based on the two-dimensional image data and the space information.

Three-dimensional shape data production method and three-dimensional shape data production system

It is possible to provide a new information recording/reproduction method and a device which can realize a small-size large-capacity memory having a characteristic equivalent to or higher than a hologram memory. The optical information recording/reproduction device includes: recording light generator () which generates a recording light () in a polarization state having two mutually orthogonal polarization components with a phase difference at an arbitrary polarization base; reproduction light generator () which generates a reproduction light () in a polarization state having only a single polarization component at a arbitrary polarization basis; recording medium () in which optical information is recorded by recording light () and the recorded optical information is reproduced by reproduction light; and optical information detector (polarimeter) which retrieves information light () after being applied to recording medium () and detects the light as optical information. Provided is also an optical information recording/reproduction method using the device.

Optical information recording/reproduction method and device

There are provided a novel optical information recording material or medium excellent in various holographic optical information recording properties such as sensitivity, response speed, long-term storage stability, and repeatability, and a substance therefor. A photoresponsive heterocyclic azo compound contains an oligomer or polymer having a photoresponsive moiety in at least one of the main chain and side chain, and the photoresponsive moiety is a building block represented by the following formula (1): wherein HCand HCeach represent a ring structure, at least one of them being a heterocyclic structure containing 1 or more heteroatom in the ring, Rand Reach represent a hydrogen atom or a substituent connected to the ring structure and may be the same or different ones, s and t each represent the number thereof, and Xand Xeach represent a terminal group or a linking group, at least one of them being a linking group connected to the main chain of the oligomer or polymer and the terminal group being a hydrogen atom or a substituent.

Photoresponsive heterocyclic azo compound, method for producing the same, and optical information recording medium

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Utsunomiya, Japan

Daisuke Barada