Teijin Limited

Fuji Electric Co., Ltd.

Kazuo Imose

Kanji Kurome

Yasuki Hanaoka

Takashi Misawa

Atsushi Asahina

Makoto Yashida

Hironori Takeuchi

Kiyoshi Yamamuro

Method and apparatus for bone morphometry and a morphometric bone assay

A beam of light generated by a light source is separately applied to a measured film having unknown thickness and a reference film having a known thickness. The light transmitted through the measured film and the reference film are converted into electric signals which are electrically processed by a logarithmic operation circuit so as to produce a specific electric signal proportional to the difference between the thickness of the measured film and the reference film.

Method and apparatus for measuring thickness of a film

In the transmission of measurement data from a rotating body to a stationary receiver, a rotary signal transmitter mounted on a rotating shaft employs a printed circuit. A printed circuit board assembly for the rotary transmitter has a plurality of evenly circumferentially distributed printed circuit boards which have their electronic components facing radially inwardly so as to resist damage due to centrifugal force resulting when the shaft and boards rotate. Connecting wires connect the assembly to a temperature sensor and the signal corresponding to the temperature is transmitted via a light-emitting element to a light-sensitive element of the receiver. Another arrangement employs rotationally balanced printed circuit discs extending radially. Multiplexing means may also be provided.

Device for transmitting measurement data from a rotating body

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Takarazuka, Japan

Kazuo Imose