BE772499A - LIGHT BEAM DETECTION SYSTEM - Google Patents

LIGHT BEAM DETECTION SYSTEM

Info

Publication number
BE772499A
BE772499A BE772499A BE772499A BE772499A BE 772499 A BE772499 A BE 772499A BE 772499 A BE772499 A BE 772499A BE 772499 A BE772499 A BE 772499A BE 772499 A BE772499 A BE 772499A
Authority
BE
Belgium
Prior art keywords
light beam
detection system
beam detection
light
detection
Prior art date
Application number
BE772499A
Other languages
French (fr)
Original Assignee
Cilas
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 Cilas filed Critical Cilas
Publication of BE772499A publication Critical patent/BE772499A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4228—Photometry, e.g. photographic exposure meter using electric radiation detectors arrangements with two or more detectors, e.g. for sensitivity compensation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Lasers (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
BE772499A 1970-09-23 1971-09-13 LIGHT BEAM DETECTION SYSTEM BE772499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7034466A FR2106761A5 (en) 1970-09-23 1970-09-23

Publications (1)

Publication Number Publication Date
BE772499A true BE772499A (en) 1972-03-13

Family

ID=9061739

Family Applications (1)

Application Number Title Priority Date Filing Date
BE772499A BE772499A (en) 1970-09-23 1971-09-13 LIGHT BEAM DETECTION SYSTEM

Country Status (7)

Country Link
BE (1) BE772499A (en)
CH (1) CH533831A (en)
DE (1) DE2144927A1 (en)
FR (1) FR2106761A5 (en)
GB (1) GB1323807A (en)
LU (1) LU63942A1 (en)
NL (1) NL7112279A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704565A1 (en) * 1977-02-03 1978-08-10 Sick Optik Elektronik Erwin PHOTOELECTRONIC DEVICE
EP0010110A1 (en) * 1978-10-25 1980-04-30 Ituo Shibata Defect detecting device
EP3261131B1 (en) * 2016-06-21 2022-06-22 Nokia Technologies Oy An apparatus for sensing electromagnetic radiation

Also Published As

Publication number Publication date
FR2106761A5 (en) 1972-05-05
NL7112279A (en) 1972-03-27
CH533831A (en) 1973-02-15
LU63942A1 (en) 1972-07-26
DE2144927A1 (en) 1972-03-30
GB1323807A (en) 1973-07-18

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