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GB916825A - A photoelectric barrier - Google Patents

A photoelectric barrier

Info

Publication number
GB916825A
GB916825A GB2048/61A GB204861A GB916825A GB 916825 A GB916825 A GB 916825A GB 2048/61 A GB2048/61 A GB 2048/61A GB 204861 A GB204861 A GB 204861A GB 916825 A GB916825 A GB 916825A
Authority
GB
United Kingdom
Prior art keywords
photo
cylinder
light
lens
jan
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
GB2048/61A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB916825A publication Critical patent/GB916825A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/12—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine
    • F16P3/14—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact
    • F16P3/144—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body with means, e.g. feelers, which in case of the presence of a body part of a person in or near the danger zone influence the control or operation of the machine the means being photocells or other devices sensitive without mechanical contact using light grids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

916,825. Photo-electric machinery guards. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. Jan. 18, 1961 [Jan. 19, 1960], No. 2048/61. Class 80 (4). In a photo-electric barrier comprising a light source 1 and at least one light-sensitive element 12, particularly for protecting a press, the source 1 comprises a fluorescent or filament tubular lamp surrounded by a cylinder 2 having one or more helical light passages 8 therein, the cylinder 2 being rotated by a motor 3 and being positioned adjacent a slit diaphragm 6 and cylindrical lens 7 so that as the cylinder 2 rotates one or more traversing beams of light emerge from the lens 7 to form a light curtain and are directed on to the element 12 by a lens 9, slit diaphragm 10 and collimating mirror 11. The passages 8 may be provided by helical slits in the wall of an opaque cylinder or by foil wrapped around a transparent cylinder. The element 12 may comprise a photo-electric cell, a photo-diode or a photo-transistor, and may control a switch or warning apparatus.
GB2048/61A 1960-01-19 1961-01-18 A photoelectric barrier Expired GB916825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH38414A DE1239962B (en) 1960-01-19 1960-01-19 Photoelectric barrier consisting of light transmitter and light receiver of relatively large width

Publications (1)

Publication Number Publication Date
GB916825A true GB916825A (en) 1963-01-30

Family

ID=7153626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2048/61A Expired GB916825A (en) 1960-01-19 1961-01-18 A photoelectric barrier

Country Status (4)

Country Link
BE (1) BE599266A (en)
CH (1) CH391896A (en)
DE (1) DE1239962B (en)
GB (1) GB916825A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283709B (en) * 1961-10-13 1968-11-21 Licentia Gmbh Photoelectric barrier that monitors an area and works with pulsed light

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE693940C (en) * 1939-05-25 1940-07-22 Siemens App Interference modulator for modulating light beams
DE886708C (en) * 1943-05-11 1953-08-17 Siemens Ag Arrangement for controlling the light of a gas discharge lamp
US2486029A (en) * 1946-12-10 1949-10-25 Pitometer Log Corp Electric motor follow-up apparatus
DE1057681B (en) * 1955-01-03 1959-05-21 Ibm Deutschland Arrangement for recording a curve divided into sections
DE1062794B (en) * 1956-01-12 1959-08-06 Askania Werke Ag Device for recording functions on tape-shaped command carriers and for their reproduction

Also Published As

Publication number Publication date
CH391896A (en) 1965-05-15
BE599266A (en) 1961-05-16
DE1239962B (en) 1967-05-03

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