FR2411421A1 - OPTICAL PRESENCE DETECTOR - Google Patents

OPTICAL PRESENCE DETECTOR

Info

Publication number
FR2411421A1
FR2411421A1 FR7834327A FR7834327A FR2411421A1 FR 2411421 A1 FR2411421 A1 FR 2411421A1 FR 7834327 A FR7834327 A FR 7834327A FR 7834327 A FR7834327 A FR 7834327A FR 2411421 A1 FR2411421 A1 FR 2411421A1
Authority
FR
France
Prior art keywords
optical
presence detector
detection
diffused
reflected
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.)
Withdrawn
Application number
FR7834327A
Other languages
French (fr)
Inventor
Philippe Roussel
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.)
Lasag AG
Original Assignee
Lasag AG
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 Lasag AG filed Critical Lasag AG
Publication of FR2411421A1 publication Critical patent/FR2411421A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4813—Housing arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/04—Systems determining the presence of a target

Abstract

DETECTEUR DE PRESENCE OPTIQUE A REFLEXION DIRECTE. IL COMPREND UN ENSEMBLE OPTIQUE POUR L'EMISSION DE RAYONS LUMINEUX SUR UN OBJET, UN ENSEMBLE OPTIQUE POUR LA RECEPTION DES RAYONS LUMINEUX DIFFUSES ET REFLECHIS PAR L'OBJET ET UNE ELECTRONIQUE DE COMMANDE DE L'EMISSION LUMINEUSE ET DE DETECTION DES RAYONS DIFFUSES ET REFLECHIS; LES CHEMINS OPTIQUES DES DEUX ENSEMBLES OPTIQUES ETANT PARALLELES A ET SYMETRIQUES PAR RAPPORT A L'AXE D'UN COTE D'UNE LENTILLE DE CONVERGENCE COMMUNE AUX DEUX CHEMINS OPTIQUES. DETECTION DE PETITS OBJETS A UNE CERTAINE DISTANCE.DIRECT REFLECTION OPTICAL PRESENCE DETECTOR. IT INCLUDES AN OPTICAL ASSEMBLY FOR THE EMISSION OF LIGHT RAYS ON AN OBJECT, AN OPTICAL ASSEMBLY FOR THE RECEPTION OF LIGHT RAYS DIFFUSED AND REFLECTED BY THE OBJECT AND AN ELECTRONIC CONTROL OF THE LIGHT EMISSION AND DETECTION OF THE DIFFUSED AND REFLECTED RAYS ; THE OPTICAL PATHS OF THE TWO OPTICAL SETS BEING PARALLEL TO AND SYMMETRICAL WITH RESPECT TO THE AXIS OF A SIDE OF A CONVERGENCE LENS COMMON TO THE TWO OPTICAL PATHS. DETECTION OF SMALL OBJECTS AT A CERTAIN DISTANCE.

FR7834327A 1977-12-06 1978-12-06 OPTICAL PRESENCE DETECTOR Withdrawn FR2411421A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1488277A CH621001A5 (en) 1977-12-06 1977-12-06

Publications (1)

Publication Number Publication Date
FR2411421A1 true FR2411421A1 (en) 1979-07-06

Family

ID=4404534

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834327A Withdrawn FR2411421A1 (en) 1977-12-06 1978-12-06 OPTICAL PRESENCE DETECTOR

Country Status (4)

Country Link
CH (1) CH621001A5 (en)
DE (1) DE2852153A1 (en)
FR (1) FR2411421A1 (en)
GB (1) GB2013330B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554244A1 (en) * 1983-10-27 1985-05-03 Commissariat Energie Atomique Back-scattered radiation proximity detector for use especially in remote handling or robotics and associated processing system
FR2694457A1 (en) * 1992-07-31 1994-02-04 Chebbi Brahim Semiconductor laser for the detection of light radiation, process for obtaining a photosensitive detector, and application of such a laser to the detection of light radiation.

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8529585D0 (en) * 1985-11-30 1986-01-08 Casswell P H Active infra red detector
GB2188415A (en) * 1986-01-23 1987-09-30 Robert Schooler Golf ball locating device
IT1197930B (en) * 1986-10-29 1988-12-21 Pirelli Accessori Ind OPTICAL SENSOR FOR MEASURING THE DISTANCE BETWEEN TWO ELEMENTS
DE4023704A1 (en) * 1990-07-26 1992-02-06 Agfa Gevaert Ag Reflex light barrier with infrared transmission diode - has filter and comparator stages with receiver circuit clamping when transmission diode inactive
DE4141469C2 (en) * 1991-12-16 1997-07-17 Sick Ag Method for operating an optical sensor arrangement for the detection of objects present in a monitoring area, and such an optical sensor arrangement
DE4203850A1 (en) * 1992-02-10 1993-08-12 Reinhold Ott Detecting movement of doors, windows etc. - using e.g. infrared light source and receiver, with radiation reaching receiver when object is in set position
FR2744838B1 (en) * 1996-02-13 1998-03-27 Schneider Electric Sa BEAM RETURN PHOTOELECTRIC DETECTOR
DE19821112C1 (en) * 1998-05-06 1999-11-18 Visolux Elektronik Gmbh Light reflection sensor for object detection
US6373057B1 (en) * 1998-09-23 2002-04-16 Dickey-John Corporation Infrared reflective article counting/detecting device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037418A (en) * 1958-01-16 1962-06-05 Askania Werke Ag Electro-optical device
FR1531569A (en) * 1967-05-23 1968-07-05 Prec Scient Et Ind Light ray detection device
GB1214148A (en) * 1967-12-12 1970-12-02 Mining & Chemical Products Ltd Device for detecting variations in the surface reflectance of objects
US3898007A (en) * 1971-11-25 1975-08-05 Aga Ab Device for electro-optical distance measurement
FR2290671A1 (en) * 1974-11-07 1976-06-04 Philips Nv CIRCUIT FOR AUTOMATIC LEVEL ADJUSTMENT OF PULSE RADIATION OPTICAL DETECTORS, FOR EXAMPLE FOR MONITORING DEVICES
DE2540665A1 (en) * 1975-09-12 1977-03-17 Bosch Gmbh Robert Optical system for range finding sender:receiver - has infrared LED and focussing optical system preventing collision of vehicles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037418A (en) * 1958-01-16 1962-06-05 Askania Werke Ag Electro-optical device
FR1531569A (en) * 1967-05-23 1968-07-05 Prec Scient Et Ind Light ray detection device
GB1214148A (en) * 1967-12-12 1970-12-02 Mining & Chemical Products Ltd Device for detecting variations in the surface reflectance of objects
US3898007A (en) * 1971-11-25 1975-08-05 Aga Ab Device for electro-optical distance measurement
FR2290671A1 (en) * 1974-11-07 1976-06-04 Philips Nv CIRCUIT FOR AUTOMATIC LEVEL ADJUSTMENT OF PULSE RADIATION OPTICAL DETECTORS, FOR EXAMPLE FOR MONITORING DEVICES
DE2540665A1 (en) * 1975-09-12 1977-03-17 Bosch Gmbh Robert Optical system for range finding sender:receiver - has infrared LED and focussing optical system preventing collision of vehicles

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554244A1 (en) * 1983-10-27 1985-05-03 Commissariat Energie Atomique Back-scattered radiation proximity detector for use especially in remote handling or robotics and associated processing system
FR2694457A1 (en) * 1992-07-31 1994-02-04 Chebbi Brahim Semiconductor laser for the detection of light radiation, process for obtaining a photosensitive detector, and application of such a laser to the detection of light radiation.
EP0583191A1 (en) * 1992-07-31 1994-02-16 Brahim Chebbi Semiconductor laser used as a light detector and its application in an optical detection system

Also Published As

Publication number Publication date
DE2852153A1 (en) 1979-06-07
CH621001A5 (en) 1980-12-31
GB2013330B (en) 1982-06-30
GB2013330A (en) 1979-08-08

Similar Documents

Publication Publication Date Title
FR2411421A1 (en) OPTICAL PRESENCE DETECTOR
US4912316A (en) Detecting apparatus with resinous body
GB2056053A (en) Photoelectric detection of presence/absence by reflection
SE8300514D0 (en) TOUCH POSITION SENSITIVE SURFACE
ES440060A1 (en) Opto-electronic focus detection system
ATE80475T1 (en) REFLECTION TYPE PHOTOELECTRIC SWITCH.
FR2391485A1 (en) OPTO-ELECTRONIC ANALYZER
ATE244901T1 (en) ASPHERICAL - CONICAL CONFORMAL OPTICAL WINDOW
JPS5217817A (en) Light measure device fot the single lens reflex camera
FR2385173A1 (en) DEVICE FOR READING A RECORDING HOLDER REFLECTING OPTICAL RADIATION
JPS6153550A (en) Photoelectric smoke sensor
JPS57210370A (en) Original density detector of image forming device
JPS5651646A (en) Toner concentration sensor
JP2588667Y2 (en) Reflective photo sensor
JPS5722210A (en) Optical device
JPS57123797A (en) Motional feedback type speaker
JPS53107865A (en) Detector of minute undulations
JPS594450U (en) Variable angle colorimeter
JPS5749929A (en) Photometric device of camera
JPS56122910A (en) Range finder
JPS56146109A (en) Photometric device
JPS57211505A (en) Position detector
JPS57132124A (en) Photometric device of single-lens reflex camera
JPS5374455A (en) Light reciving position detector
JPS5497469A (en) Laser speed measuring apparatus

Legal Events

Date Code Title Description
ST Notification of lapse