FR2467415A1 - Dispositif de protection contre les sources lumineuses parasites dans des systemes de barrieres optiques - Google Patents

Dispositif de protection contre les sources lumineuses parasites dans des systemes de barrieres optiques Download PDF

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Publication number
FR2467415A1
FR2467415A1 FR7925061A FR7925061A FR2467415A1 FR 2467415 A1 FR2467415 A1 FR 2467415A1 FR 7925061 A FR7925061 A FR 7925061A FR 7925061 A FR7925061 A FR 7925061A FR 2467415 A1 FR2467415 A1 FR 2467415A1
Authority
FR
France
Prior art keywords
light
reflector
sun
source
optical barrier
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.)
Granted
Application number
FR7925061A
Other languages
English (en)
French (fr)
Other versions
FR2467415B3 (en:Method
Inventor
Claude Richard
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.)
Compagnie Generale dAutomatisme SA
Original Assignee
Compagnie Generale dAutomatisme SA
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 Compagnie Generale dAutomatisme SA filed Critical Compagnie Generale dAutomatisme SA
Priority to FR7925061A priority Critical patent/FR2467415A1/fr
Publication of FR2467415A1 publication Critical patent/FR2467415A1/fr
Application granted granted Critical
Publication of FR2467415B3 publication Critical patent/FR2467415B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G01V8/18—Detecting, e.g. by using light barriers using one transmitter and one receiver using mechanical scanning systems
    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B17/00—Screening
    • G12B17/04—Screening from visible, ultraviolet, or infrared light

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Traffic Control Systems (AREA)
FR7925061A 1979-10-09 1979-10-09 Dispositif de protection contre les sources lumineuses parasites dans des systemes de barrieres optiques Granted FR2467415A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7925061A FR2467415A1 (fr) 1979-10-09 1979-10-09 Dispositif de protection contre les sources lumineuses parasites dans des systemes de barrieres optiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7925061A FR2467415A1 (fr) 1979-10-09 1979-10-09 Dispositif de protection contre les sources lumineuses parasites dans des systemes de barrieres optiques

Publications (2)

Publication Number Publication Date
FR2467415A1 true FR2467415A1 (fr) 1981-04-17
FR2467415B3 FR2467415B3 (en:Method) 1982-06-04

Family

ID=9230476

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7925061A Granted FR2467415A1 (fr) 1979-10-09 1979-10-09 Dispositif de protection contre les sources lumineuses parasites dans des systemes de barrieres optiques

Country Status (1)

Country Link
FR (1) FR2467415A1 (en:Method)

Also Published As

Publication number Publication date
FR2467415B3 (en:Method) 1982-06-04

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