JPS56163444A - Device for detecting blur on window glass - Google Patents

Device for detecting blur on window glass

Info

Publication number
JPS56163444A
JPS56163444A JP6826280A JP6826280A JPS56163444A JP S56163444 A JPS56163444 A JP S56163444A JP 6826280 A JP6826280 A JP 6826280A JP 6826280 A JP6826280 A JP 6826280A JP S56163444 A JPS56163444 A JP S56163444A
Authority
JP
Japan
Prior art keywords
glass
blur
reflecting plate
output
receiving element
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
JP6826280A
Other languages
Japanese (ja)
Inventor
Kazuaki Kume
Atsutoshi Okamoto
Akio Sugiura
Yasushi Kojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso 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
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP6826280A priority Critical patent/JPS56163444A/en
Publication of JPS56163444A publication Critical patent/JPS56163444A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/94—Investigating contamination, e.g. dust

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To make it possible to detect the blur on the window glass without fail regardless of the effect of the temperature, by detecting the difference between reflectivity of reflecting plate which is thermally joined with the glass and the reflectivity of the reflecting plate which is thermally insulated from the glass. CONSTITUTION:The reflecting plate 7a is attached to the glass 1 with a plate 8 having a good heat conductivity. Therefore when moisture is also attached to the reflecting plate 7a, the blur is yielded. At this time, the rate at which the light from a light emitting element 4 is dispersed becomes high, and the output of a light receiving element 3 is decreased. Since the other reflecting plate 7b is thermally insulated from the glass 1 by a plate 9 having good heat insulating property, the blur is not yielded. Therefore, the output of the light receiving element 5 maintains a constant value. When the output of the light receiving element 3 is decreased by a specified rate, the output of a comparator 10 is inserted, and the yielding of the blur can be detected. Thus the blur on the glass can be detected without fail, and the attachment to the glass an be readily accomplished.
JP6826280A 1980-05-21 1980-05-21 Device for detecting blur on window glass Pending JPS56163444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6826280A JPS56163444A (en) 1980-05-21 1980-05-21 Device for detecting blur on window glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6826280A JPS56163444A (en) 1980-05-21 1980-05-21 Device for detecting blur on window glass

Publications (1)

Publication Number Publication Date
JPS56163444A true JPS56163444A (en) 1981-12-16

Family

ID=13368656

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6826280A Pending JPS56163444A (en) 1980-05-21 1980-05-21 Device for detecting blur on window glass

Country Status (1)

Country Link
JP (1) JPS56163444A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217642A (en) * 1985-07-17 1987-01-26 Automob Antipollut & Saf Res Center Apparatus for detecting cloudiness of windowpane of automobile
WO2019039149A1 (en) * 2017-08-23 2019-02-28 株式会社デンソー Air-conditioning control device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217642A (en) * 1985-07-17 1987-01-26 Automob Antipollut & Saf Res Center Apparatus for detecting cloudiness of windowpane of automobile
WO2019039149A1 (en) * 2017-08-23 2019-02-28 株式会社デンソー Air-conditioning control device

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