Journal of the Horological Institute of Japan
Online ISSN : 2432-1915
Print ISSN : 0029-0416
ISSN-L : 0029-0416
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Volume 119
Displaying 1-9 of 9 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    1986 Volume 119 Pages Cover1-
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_Cover1
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    Article type: Cover
    1986 Volume 119 Pages Cover2-
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_Cover2
    JOURNAL FREE ACCESS
    Download PDF (36K)
  • [title in Japanese]
    [in Japanese]
    Article type: Article
    1986 Volume 119 Pages 1-3
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_1
    JOURNAL FREE ACCESS
    Download PDF (327K)
  • Development of Diver's Watch with Electornic Depth Meter, "Citizen Depth Meter"
    Toshio UMEMTO, Tadashi HASEGAWA, Toshio HIRUTA, Masao SAKUYAMA, Tatsuo ...
    Article type: Article
    1986 Volume 119 Pages 4-19
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_4
    JOURNAL FREE ACCESS
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    We have succeeded in producing a diver' s watch with an electronic depth meter, "Citizen Depth Meter", in which a digital depth meter is added to a conventional analogue diver's watch. This new watch is equipped with a simi-conductor pressure sensor by which the depth measurement is made. In addition to the depth measurement, the watch has many functions such as bottom time measurement function, various diving alarm functions (depth alarm and dive time alarm), and memory. functions (maximum depth memory and dive time memory). The watch is useful for diving safety.
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  • Microdimensional Measurement by Laser
    Kunitaru GOTO, Hiroo FUJITA
    Article type: Article
    1986 Volume 119 Pages 20-34
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_20
    JOURNAL FREE ACCESS
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    A microdimensional measuring instrument by use of laser has been put into practical use as a full automatic on-line measuring instrument for production line. This instrument makes highly accurate measurements utilizing the characteristic of good focusability of laser beam and the light scanning action by an acousto-optic device. The measurements are made by the electrical control, and the analytical arithmetics are performed on the reflected light paterns. Therefore, the high-speed measurements can be made with high accuracy. This article introduces an example in which the measurement range of l to 40 μm and the resolution of 0.03 μm have been realized on a measurement of precisely finished microparts.
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  • New Shape Face Shear Mode Quartz Crystal Resonator
    Hirofumi KAWASHIMA, Masaru MATSUYAMA
    Article type: Article
    1986 Volume 119 Pages 35-43
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_35
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    This paper describes the frequency temperature behavior and electrical characteristics of a new shape face shear mode quartz crystal resonator. The new shape quartz crystal resonator consists of a vibrational portion and supporting portions. The resonator has great advantages in improving miniaturization and shock resistance, because it is incorporated by an etching method. They are connected at the portions with small displacement of the vibrational portion. As a result, since vibration energy of the vibrational portion is trapped well inside, this resonator is excellent in electrical characteristics, namely, the resonator with low crystal impedance and a high quarity factor is obtained. Furthermore, the choice of a cut angle gives two remarkable features. One gives the zero temperature coefficient and the other does high linearity in frequency temperature characteristics. Thus, the new shape face shear mode quartz crystal resonator which is strong against shock, of small size and has noteworthy features in frequency temperature characteristics has been obtained.
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    Article type: Article
    1986 Volume 119 Pages 44-65
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_44
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    Article type: Article
    1986 Volume 119 Pages 66-69
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_66
    JOURNAL FREE ACCESS
    Download PDF (390K)
  • [title in Japanese]
    Article type: Bibliography
    1986 Volume 119 Pages 72-74
    Published: December 20, 1986
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.119.0_72
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    Download PDF (125K)
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