Title:
An optical touch switch and field apparatus
Document Type and Number:
Japanese Patent JP6070639
Kind Code:
B2
Abstract:
An optical switch includes a light receiver (22) configured to receive a pulsed light (L2) transmitted from an operation panel (10) operated by a user, the light receiver (22) being configured to generate a light receiving signal (R) in response to receipt of the pulsed light (L2), and a controller (30) configured to receive the light receiving signal (R) from the light receiver (22), the controller being configured to generate, in accordance with the light receiving signal (R), a controlling signal (C) for controlling a frequency of a pulsed light (L1) to be emitted toward the operation panel (10).
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Inventors:
Endo Tatsuro
Application Number:
JP2014120627A
Publication Date:
February 01, 2017
Filing Date:
June 11, 2014
Export Citation:
Assignee:
Yokogawa Electric Corporation
International Classes:
H01H35/00; G01J1/42; G01V8/12
Domestic Patent References:
| JP2008232707A | ||||
| JP2005295399A | ||||
| JP2009021018A | ||||
| JP2003037563A |
Foreign References:
| DE19639285C1 | ||||
| WO2007006331A1 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Yasuhiko Murayama