Oki Electric Industry Co., Ltd.

Nec Corporation

Yutaka Uno

Masahiro Kubo

Yuji Ohno

Yuan Luo

Masahiro Hayashitani

Eiji Yumoto

A motion estimation systemincludes a pose acquisition unitand an action estimation unit. The pose acquisition unitacquires, in time series, pose information representing a posture of one person and a posture of another person identified simultaneously in a situation in which a motion of the one person affects a motion of the other person. The action estimation unitdivides the acquired time series pose information on each person by unsupervised learning to estimate an action series that is a series of motions including two or more pieces of pose information.

Motion estimation system, motion estimation method, and motion estimation program

A light waveguide element is made by forming only an upper clad layer () and a core layer () without etching an optical axis height-adjusting sections. By using plasma chemical vapor deposition (CVD) which is good at controlling the film thickness, it is possible to provide without difficulty a light waveguide element with a height-adjusting section that has a precise film thickness, making it possible to provide precise optical axis vertical alignment upon mounting. By forming alignment markers in the same photolithography as that of the core formation, it is possible to provide precise horizontal optical axis alignment.

Process for making light waveguide element

A process for making a light waveguide element is made by forming only an upper clad layer () and a core layer () without etching an optical axis height-adjusting sections. By using plasma chemical vapor deposition (CVD) which is good at controlling the film thickness, it is possible to provide without difficulty a light waveguide element with a height-adjusting section that has a precise film thickness, making it possible to provide precise optical axis vertical alignment upon mounting. By forming alignment markers in the same photolithography as that of the core formation, it is possible to provide precise horizontal optical axis alignment.

An optical module includes an optical waveguide element having an optical axis which can be adjusted with high accuracy. An optical waveguide element is arranged on an Si bench substrate such that an optical waveguide layer (including a lower clad layer a core layer and an upper clad layer ) faces the upper surface of the Si bench substrate and is fixed to that surface with an adhesive A plurality of spherical spacers (fine particles made of quartz, for instance) are arranged between the optical waveguide element and the Si bench substrate The gap distance between the optical waveguide element and the Si bench substrate is regulated by the diameter of the spacer

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Tokyo, Japan

Yutaka Uno