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JPS60216245A - Water drip sensor - Google Patents

Water drip sensor

Info

Publication number
JPS60216245A
JPS60216245A JP7230284A JP7230284A JPS60216245A JP S60216245 A JPS60216245 A JP S60216245A JP 7230284 A JP7230284 A JP 7230284A JP 7230284 A JP7230284 A JP 7230284A JP S60216245 A JPS60216245 A JP S60216245A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
light
side
receiving
glass
elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7230284A
Inventor
Umeo Arao
Shigeru Hayashi
Kazuhisa Kubota
Original Assignee
Tokai Rika Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle

Abstract

PURPOSE:To prevent deterioration in a sensor by arranging a light source and light receiving elements on one surface of a transparent plate having a roughly parallel surface to receive light with the light receiving elements only when a water drip is attached to the other surface thereof. CONSTITUTION:A number of light emitting elements 21, 22, and 31... and 3n are arranged facing the inner side 1a of a front glass 1 while individually corresponding to set areas A and B and a prism 4 having a light receiving element 5 is adhered on the side of the glass 1. Then, the angle theta1 is set at about 42 deg. between one side 4a of the prism 4 and the external side 1b of the glass 1 while the angle theta2 at about 63 deg. between the other side 4b of the prism and the external side 1b of the glass. Thus, when no water drip 8 is attached to the glass 1, light 6 is emitted outside. Only when the water drop 8 is attached thereto, light 6 is reflected totally to receive light with the light receiving element 5 thereby preventing deterioration in a light source and the light receiving elements.
JP7230284A 1984-04-11 1984-04-11 Water drip sensor Pending JPS60216245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7230284A JPS60216245A (en) 1984-04-11 1984-04-11 Water drip sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7230284A JPS60216245A (en) 1984-04-11 1984-04-11 Water drip sensor

Publications (1)

Publication Number Publication Date
JPS60216245A true true JPS60216245A (en) 1985-10-29

Family

ID=13485333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7230284A Pending JPS60216245A (en) 1984-04-11 1984-04-11 Water drip sensor

Country Status (1)

Country Link
JP (1) JPS60216245A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62184332A (en) * 1986-02-08 1987-08-12 Agency Of Ind Science & Technol Tapered waveguide type liquid detector
US4798956A (en) * 1987-07-15 1989-01-17 Hochstein Peter A Electro-optical windshield moisture sensing
US4871917A (en) * 1988-04-19 1989-10-03 Donnelly Corporation Vehicular moisture sensor and mounting apparatus therefor
US4973844A (en) * 1989-07-10 1990-11-27 Donnelly Corporation Vehicular moisture sensor and mounting apparatus therefor
JPH0327554U (en) * 1989-07-24 1991-03-19
EP0919443A2 (en) 1997-11-26 1999-06-02 Nippon Sheet Glass Co. Ltd. Transparent substrate equipped with water detection sensor
EP0947403A2 (en) 1998-04-03 1999-10-06 Nippon Sheet Glass Co., Ltd. Water detection sensor having signal transmission function
US5991049A (en) * 1997-07-22 1999-11-23 Nippon Sheet Glass Co., Ltd. Transparent substrate having rain sensor
US6153995A (en) * 1998-04-03 2000-11-28 Nippon Sheet Glass Co., Ltd. Water drop detection sensor
JP2002082044A (en) * 2000-09-08 2002-03-22 Nippon Sheet Glass Co Ltd Device for detecting clinging matter and control device using it
WO2013065765A1 (en) * 2011-11-02 2013-05-10 Ricoh Company, Ltd. Image pickup unit and vehicle in which image pickup unit is mounted
JP2014235061A (en) * 2013-05-31 2014-12-15 東亜ディーケーケー株式会社 Turbidity sensor

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62184332A (en) * 1986-02-08 1987-08-12 Agency Of Ind Science & Technol Tapered waveguide type liquid detector
JPH0511780B2 (en) * 1986-02-08 1993-02-16 Kogyo Gijutsuin
US4798956A (en) * 1987-07-15 1989-01-17 Hochstein Peter A Electro-optical windshield moisture sensing
US4871917A (en) * 1988-04-19 1989-10-03 Donnelly Corporation Vehicular moisture sensor and mounting apparatus therefor
US4973844A (en) * 1989-07-10 1990-11-27 Donnelly Corporation Vehicular moisture sensor and mounting apparatus therefor
JPH0327554U (en) * 1989-07-24 1991-03-19
US5991049A (en) * 1997-07-22 1999-11-23 Nippon Sheet Glass Co., Ltd. Transparent substrate having rain sensor
EP0919443A2 (en) 1997-11-26 1999-06-02 Nippon Sheet Glass Co. Ltd. Transparent substrate equipped with water detection sensor
US6153995A (en) * 1998-04-03 2000-11-28 Nippon Sheet Glass Co., Ltd. Water drop detection sensor
EP0947403A2 (en) 1998-04-03 1999-10-06 Nippon Sheet Glass Co., Ltd. Water detection sensor having signal transmission function
JP2002082044A (en) * 2000-09-08 2002-03-22 Nippon Sheet Glass Co Ltd Device for detecting clinging matter and control device using it
WO2013065765A1 (en) * 2011-11-02 2013-05-10 Ricoh Company, Ltd. Image pickup unit and vehicle in which image pickup unit is mounted
JP2013117519A (en) * 2011-11-02 2013-06-13 Ricoh Co Ltd Imaging unit and vehicle loaded with imaging unit
US9057683B2 (en) 2011-11-02 2015-06-16 Ricoh Company, Ltd. Image pickup unit and vehicle in which image pickup unit is mounted
JP2014235061A (en) * 2013-05-31 2014-12-15 東亜ディーケーケー株式会社 Turbidity sensor

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