FR2004803A1 - - Google Patents

Info

Publication number
FR2004803A1
FR2004803A1 FR6906294A FR6906294A FR2004803A1 FR 2004803 A1 FR2004803 A1 FR 2004803A1 FR 6906294 A FR6906294 A FR 6906294A FR 6906294 A FR6906294 A FR 6906294A FR 2004803 A1 FR2004803 A1 FR 2004803A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6906294A
Other languages
French (fr)
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.)
Eltro GmbH and Co
Original Assignee
Eltro GmbH and Co
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 Eltro GmbH and Co filed Critical Eltro GmbH and Co
Publication of FR2004803A1 publication Critical patent/FR2004803A1/fr
Withdrawn legal-status Critical Current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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle
FR6906294A 1968-03-27 1969-03-06 Withdrawn FR2004803A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681755074 DE1755074B1 (en) 1968-03-27 1968-03-27 Display device for soiling and fogging of windows

Publications (1)

Publication Number Publication Date
FR2004803A1 true FR2004803A1 (en) 1969-12-05

Family

ID=5693303

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6906294A Withdrawn FR2004803A1 (en) 1968-03-27 1969-03-06

Country Status (4)

Country Link
DE (1) DE1755074B1 (en)
FR (1) FR2004803A1 (en)
GB (1) GB1242621A (en)
SE (1) SE353497B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249296A2 (en) * 1986-06-10 1987-12-16 Philips Patentverwaltung GmbH Device for determination of formation of ice

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2818019C2 (en) * 1978-04-25 1980-07-17 Bayerische Motoren Werke Ag, 8000 Muenchen Vehicle headlights with a pollution sensor
DE2833635C2 (en) * 1978-08-01 1983-05-05 Siemens AG, 1000 Berlin und 8000 München Method for measuring the contamination of optical interfaces in optical receivers and device for carrying out the method
DE3232059A1 (en) * 1981-09-04 1983-03-24 Westinghouse Electric Corp., 15222 Pittsburgh, Pa. GLASS FIBER DETECTOR
DE3247659A1 (en) * 1982-12-23 1984-06-28 Wolfgang Dr. 7000 Stuttgart Ruhrmann OPTICAL SENSOR
JPS61116645A (en) * 1984-11-09 1986-06-04 Nippon Denso Co Ltd Liquid detector for automatic windshield wiper controller
US4652745A (en) * 1985-12-06 1987-03-24 Ford Motor Company Optical moisture sensor for a window or windshield
FI75669C (en) * 1986-02-04 1988-07-11 Vaisala Oy Method for measuring transmission of light and apparatus for applying the method.
IT212332Z2 (en) * 1987-07-31 1989-07-04 Veglia Borletti Srl DEVICE SENSOR OF THE PRESENCE OF WATER DROPS ON A VEHICLE CRYSTAL AND EQUIPMENT OF A WINDSCREEN WIPER EQUIPPED WITH THE SAID DEVICE
GB2360583A (en) * 2000-03-21 2001-09-26 Microflow Ltd Optical condensation monitor
DE102014220652A1 (en) * 2014-10-13 2016-04-14 Continental Automotive Gmbh Vehicle window with a window heating and heating and sensor unit for a vehicle
US10632507B2 (en) 2014-10-17 2020-04-28 Excelsense Technologies Corp. Self-cleaning optical sensor assembly
AT518591B1 (en) 2016-05-11 2019-04-15 B & R Ind Automation Gmbh Illuminant with adjustable irradiance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0249296A2 (en) * 1986-06-10 1987-12-16 Philips Patentverwaltung GmbH Device for determination of formation of ice
EP0249296A3 (en) * 1986-06-10 1989-06-28 Philips Patentverwaltung GmbH Device for determination of formation of ice

Also Published As

Publication number Publication date
DE1755074B1 (en) 1970-09-10
GB1242621A (en) 1971-08-11
SE353497B (en) 1973-02-05

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse