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)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Lasers (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
DE2144927A1 (en) 1972-03-30
GB1323807A (en) 1973-07-18
LU63942A1 (en) 1972-07-26
FR2106761A5 (en) 1972-05-05
NL7112279A (en) 1972-03-27
CH533831A (en) 1973-02-15

Similar Documents

Publication Publication Date Title
BE807329A (en) LIGHT BEAM SWEEPING SYSTEM
BE773493A (en) ORIENTATION INDICATOR SYSTEM
CH535407A (en) Lighting system
BE765366A (en) MULTI-SHEET DETECTION SYSTEM
BE775169A (en) FIRE WARNING SYSTEM
AT346097B (en) OPTOELECTRONIC FOCUSING DETECTION SYSTEM
BE760729A (en) SIGNAL DETECTOR SYSTEM
BE801866A (en) ELEVATOR SYSTEM
BE817967A (en) INTRUSION DETECTION SYSTEM
CH526825A (en) Traffic light signal
BE761686A (en) TRIGLYCERIDE ANALYSIS SYSTEM
BE748660A (en) EMERGENCY LIGHTING SYSTEM
BE747978A (en) OPTICAL IMAGE FORMATION SYSTEM
BE750744A (en) DISPLAY SYSTEM
IT940790B (en) AUTOMATIC RADIOGONIOMETRIC SYSTEM
BE761812A (en) PIPE CONNECTION SYSTEM
BE745777A (en) ENERGY MULTIPLEXING SYSTEM
BE763235A (en) NAVIGATION SYSTEM
BE764830A (en) OPTICAL SCAN SYSTEM FOR PHOTOCOPIERS (
BE758902A (en) PHOTOELECTROPHORESIS IMAGE FORMATION SYSTEM
BE773799A (en) ELECTRO-OPTICAL DISPLAY SYSTEM
BE772499A (en) LIGHT BEAM DETECTION SYSTEM
BE762859A (en) OPTICAL DEMODULATION SYSTEM
BE768963A (en) EVAPORIZATION SYSTEM
FR1517523A (en) Vehicle presence detection system