Kabushiki Kaisha Toshiba

Toshiba Materials Co., Ltd.

Seoul Semiconductor Co., Ltd.

Junji Taniguchi

Yasuhiro Shirakawa

Masahiko Yamakawa

Yasumasa Ooya

Yasuhisa Shiraishi

Takashi Noji

Ryoji Tsuda

Tatsunori Itoga

Yoshinobu Sekijima

Kazuya Tsujimoto

Hideo Koizumi

Mitsumasa Hiroi

According to one embodiment, there is provided a white light source system including white light sources. An absolute value of a difference between (P(&#x3bb;)&#xd7;V(&#x3bb;))/(P(&#x3bb;max1)&#xd7;V(&#x3bb;max1)) and (B(&#x3bb;)&#xd7;V(&#x3bb;))/(B(&#x3bb;max2)&#xd7;V(&#x3bb;max2)) for each of the white light sources satisfies a relational expression represented by|(((&#x3bb;)&#xd7;(&#x3bb;))/((&#x3bb;max1)&#xd7;(&#x3bb;max1))&#x2212;((&#x3bb;)&#xd7;(&#x3bb;))/((&#x3bb;max2)&#xd7;(&#x3bb;max2))|&#x2264;0.15 The white light source system has a light emission characteristic of white light emitted by the system is continuously changed along with an elapse of time by changing a mixing ratio of light beams from the white light sources.

White light source system

The object of the present invention is to provide a radioactive-ray image tube having less deformations, such as the twist of an input substrate, less aberration over the entire regions of an output image, excellent resolution and good brightness uniformity and contrast characteristics. This radioactive-ray image tube,comprises an input window,formed on one side surface of a vacuum vessel,and allowing radioactive-rays to enter the vacuum vessel,, an input screen,for converting the radioactive-rays incident on the input window,into a fluorescent image or a photoelectric image, and an input substrate,holding the input screen,is characterized in that the input substrate,comprises of a clad material,having an aluminum alloy material,on the radioactive-ray incidence side and a pure aluminum material,on the input screen,side provided integrally with each other.

Radioactive-ray image tube having input member formed of a clad material

A wear-resistant and corrosion-resistant loom part comprises a Fe--Cr based alloy or a Fe--Cr--Ni based alloy, which has a substantially dual-phase structure comprising a ferrite phase and a martensite phase. The Fe--Cr based alloy preferably contains 10 to 20% by weight Cr, and contains 5 to 70 volume % of the ferrite phase in its structure. The Fe--Cr--Ni based alloy preferably contains 10 to 30% by weight of Cr, 0.01 to 15% by weight of Ni, and 5 to 70 volume % of the ferrite phase in its structure. The maximum crystal particle diameter of the Fe--Cr based alloy or the Fe--Cr--Ni based alloy is preferably 20 .mu.m or less. The loom part is preferably formed of either a dent of a reed or a heddle.

Wear resistant loom part and loom comprising the same

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Yokosuka Kanagawa, Japan

Junji Taniguchi