Mitsubishi Denki Kabushiki Kaisha

Yoshikazu Utsumi

Akira Yamada

Hisao Watarai

Takehiko Sato

Toshihisa Honda

Yuichi Sakai

Tadaki Murakami

Isao Ishii

Yoshiaki Sakamoto

Kiyoshi Saitou

Hiroshi Takayanagi

Ken Sato

Masatomi Okumura

Tatsuharu Nakamura

Infrared detection element array and method for fabricating the same

A thermal-type infrared detecting element is provided which includes an infrared detecting member, a support member supporting the infrared detecting member, a substrate holding the support member, and a low thermal conduction part intervening between the substrate and a central portion of the support member, the support member having a link portion in at least a peripheral portion thereof which links the support member to the substrate and slits and/or grooves defined at a location adjacent the link portion. This infrared detecting element exhibits excellent sensitivity and responsiveness while requiring no cooling, and a one- or two-dimensional array of the element assures clear imaging with less crosstalk.

Infrared detecting element

The improved dielectric porcelain for use at high frequencies is represented by the general formula:

Dielectric porcelain for use at high frequencies

The present invention provides microwave ceramic dielectric materials having large relative dielectric constant, very large Q, and stable and small temperature coefficient. The ceramic dielectric materials of the present invention are expressed by the general formula:

Ceramic dielectric materials for microwave use and a method for

An arc resistant insulator composed of a composite composition comprising an insulating base material and a zinc borate hydrate. The insulating base material is composed of aluminum oxide and/or aluminum hydroxide and mica power. The zinc borate hydrate is composed essentially of 2ZnO.3B.sub.2 O.sub.3.3H.sub.2 O. The arc resistant insulator is prepared by mixing the insulating base material with a zinc borate hydrate forming material composed of normal boric acid, boric acid anhydride and zinc oxide and heating and compacting the mixture thus obtained in a closed system at a temperature of at least 155.degree. C. under pressure of at least 50 kg/cm.sup.2.

Arc resistant insulator

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Amagasaki, Japan

Yoshikazu Utsumi