著者

白井 暁彦 久米 祐一郎 津田 元久 畑田 豊彦

出版者

一般社団法人 映像情報メディア学会

雑誌

映像情報メディア学会技術報告 21.6 (ISSN:13426893)

巻号頁・発行日

pp.77-84, 1997-02-03 (Released:2017-06-23)

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3次元ディスブレイによって生成された物体との対話において、視覚に加えて触覚や力覚情報の人間への提示が重要である。本研究では皮膚の2点に振動刺激を与えることによって生じるファントムセンセーションを用いて、把持時の疑似力覚の提示を試みた。小型の工具を把持する際に指・手掌部との接触握部に振動子を組み込むことにより、刺激素子の装用感が少ない状態で、皮膚に振動刺激を与えることが可能である。本報告では指・手掌部の振動刺激に対する皮膚感覚の受容特性、静的や動的ファントムセンセーションの生起条件等を明らかにした。また2つの振動子と、PSDを用いた光学式3次元位置検出法と組み合わせ、力学的なバランス感覚も提示できる3次元画像との仮想対話作業ツールを試作した。

著者

宮川 俊夫 白井 靖男 津田 元久 一色 真幸 西村 英之 遠藤 正治 長嶋 正春

出版者

社団法人 日本写真学会

雑誌

日本写真学会誌 (ISSN:03695662)

巻号頁・発行日

vol.56, no.3, pp.205-213, 1993-06-25 (Released:2011-08-11)

参考文献数

14

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This paper is the first one of scientific reports on Tsui-shu (wooden, urushi lacquered and engraved) cameras. These were made and used in the last days of the Tokugawa shogunate. It was considered that three sets of this kind of cameras were in existence. But today, we can see only two. The authors show X-ray computed tomograms of the camera kept in Fukui Municipal Museum of History. Coating layer on the outer surface of the wooden camera body was estimated at 6 mm thickness in maximum. Hg and Fe were detected by means of fluorescent X-ray spectroscopic analysis, as metal element components contained in the layer. It was observed that the painted crust composed of a thin coated reddish pigment-urushi lacquer layer on a heavy coated and reliefed clay-urushi layer, by means of soft X-ray photography and low magnification micrography. Computed tomograms also showed that the optical system of this camera was composed of only two pieces of single lenses and had about 17 cm of focal length. The F-number was estimated at about 7. The first lens was almost a flat plate and the second was in plano-convex type. UV-visible spectrogram showed that the former was made of glass, not quartz. It was considered that the Tsui-shu Camera was made in Japan, not in China, because of following reasons: 1) an imitative “tsui-shu” and Japanese style wooden craft, 2) the optical system, and its cloisonne wared lens cap and the outer cylider were prepared in Owari area of this country.