GB1323807A - Light beam detection device - Google Patents

Light beam detection device

Info

Publication number
GB1323807A
GB1323807A GB4432871A GB4432871A GB1323807A GB 1323807 A GB1323807 A GB 1323807A GB 4432871 A GB4432871 A GB 4432871A GB 4432871 A GB4432871 A GB 4432871A GB 1323807 A GB1323807 A GB 1323807A
Authority
GB
United Kingdom
Prior art keywords
light beam
detector
detection device
sept
photo
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.)
Expired
Application number
GB4432871A
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 Industriel des Lasers CILAS SA
Original Assignee
Compagnie Industriel des Lasers CILAS 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 Industriel des Lasers CILAS SA filed Critical Compagnie Industriel des Lasers CILAS SA
Publication of GB1323807A publication Critical patent/GB1323807A/en
Expired legal-status Critical Current

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)

Abstract

1323807 Photo-electric detector arrangement COMPAGNIE INDUSTRIELLE DES LASERS 23 Sept 1971 [23 Sept 1970] 44328/71 Heading G1A In order to compensate for the effects of extraneous light on a light beam detector a second photo-cell is located adjacent the detector and facing the same direction and is connected to control the detector gain by way of its power supply or by way of an amplifier in its output. One cell of an assembly of four may be arranged to control the sensitivity of the others. Application of the invention to a light beam optical guidance system is suggested.
GB4432871A 1970-09-23 1971-09-23 Light beam detection device Expired GB1323807A (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
GB1323807A true GB1323807A (en) 1973-07-18

Family

ID=9061739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4432871A Expired GB1323807A (en) 1970-09-23 1971-09-23 Light beam detection device

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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010110A1 (en) * 1978-10-25 1980-04-30 Ituo Shibata Defect detecting device
EP3261131A1 (en) * 2016-06-21 2017-12-27 Nokia Technologies Oy An apparatus for sensing electromagnetic radiation

Families Citing this family (1)

* 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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010110A1 (en) * 1978-10-25 1980-04-30 Ituo Shibata Defect detecting device
EP3261131A1 (en) * 2016-06-21 2017-12-27 Nokia Technologies Oy An apparatus for sensing electromagnetic radiation
WO2017220857A1 (en) * 2016-06-21 2017-12-28 Nokia Technologies Oy An apparatus for sensing electromagnetic radiation
US11024756B2 (en) 2016-06-21 2021-06-01 Nokia Technologies Oy Apparatus for sensing electromagnetic radiation incident substantially perpendicular to the surface of a substrate

Also Published As

Publication number Publication date
NL7112279A (en) 1972-03-27
FR2106761A5 (en) 1972-05-05
DE2144927A1 (en) 1972-03-30
LU63942A1 (en) 1972-07-26
BE772499A (en) 1972-03-13
CH533831A (en) 1973-02-15

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees