GB1529022A - Light barrier - Google Patents
Light barrierInfo
- Publication number
- GB1529022A GB1529022A GB1704176A GB1704176A GB1529022A GB 1529022 A GB1529022 A GB 1529022A GB 1704176 A GB1704176 A GB 1704176A GB 1704176 A GB1704176 A GB 1704176A GB 1529022 A GB1529022 A GB 1529022A
- Authority
- GB
- United Kingdom
- Prior art keywords
- retroreflector
- light barrier
- light
- april
- source
- 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
Links
Classifications
-
- 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
- G01V8/14—Detecting, e.g. by using light barriers using one transmitter and one receiver using reflectors
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/18—Automatic stop motions
- D03D51/20—Warp stop motions
- D03D51/28—Warp stop motions electrical
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Lenses (AREA)
- Treatment Of Fiber Materials (AREA)
- Knitting Machines (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
1529022 Light barrier ERWIN SICK GmbH OPTIK-ELEKTRONIK 27 April 1976 [28 April 1975] 17041/76 Heading G1A In a light barrier designed to detect snapped warp threads 17 a retroreflector 11 is used in conjunction with a source-receiver unit 16, 26. The retroreflector has a spherically corrected convergent lens positioned at the centre of curvature of a concave reflector. A current of air 18 is directed upwards to blow any loose threads into the beam 12. The retroreflector is made sufficiently broader than the beam 12 to ensure that the beam is always reflected back should the weaving machine cause the various optical components to vibrate. The light source may be a laser Fig. 2 (not shown). The detector may be associated with light diffusers such as ground glass screens or crossed lenticular screens.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752518828 DE2518828C3 (en) | 1975-04-28 | 1975-04-28 | Photoelectric barrier |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1529022A true GB1529022A (en) | 1978-10-18 |
Family
ID=5945190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1704176A Expired GB1529022A (en) | 1975-04-28 | 1976-04-27 | Light barrier |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH595617A5 (en) |
DE (1) | DE2518828C3 (en) |
FR (1) | FR2309938A1 (en) |
GB (1) | GB1529022A (en) |
IT (1) | IT1059619B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2124365A (en) * | 1982-07-28 | 1984-02-15 | Gen Electric | Optical inspection system and method |
EP1503226A3 (en) * | 2003-08-01 | 2007-03-28 | Leuze electronic GmbH + Co KG | Optical sensor |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5160850A (en) * | 1991-01-14 | 1992-11-03 | Walter J. Spirig | Light beam interrupt detection apparatus for use in a vibrating environment |
DE4242550C2 (en) * | 1991-12-21 | 1995-08-24 | Hirschmann Richard Gmbh Co | Device for monitoring a closure element |
DE4237807A1 (en) * | 1992-11-05 | 1994-05-11 | Lutz J Koch | Procedure for determining an evaluation figure for the degradation of foam |
DE19622495C2 (en) * | 1996-06-05 | 2003-12-18 | Ifm Electronic Gmbh | Thread detection device |
DE19626187C2 (en) * | 1996-06-29 | 2000-02-10 | Zumbach Electronic Ag | Method and arrangement for the detection of objects |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE952155C (en) * | 1954-05-23 | 1956-11-08 | Erwin Sick | Photoelectric barrier |
DE1228967B (en) * | 1964-08-14 | 1966-11-17 | Dr Hans Richter | Photoelectric barrier with reflector |
US3628030A (en) * | 1970-10-15 | 1971-12-14 | Appalachian Electronics Instr | Broken end detection system for warpers utilizing novel optical system |
FR2115621A5 (en) * | 1970-11-26 | 1972-07-07 | Appalachian Electronic Instr | Detecting broken ends in a moving warp of - threads |
-
1975
- 1975-04-28 DE DE19752518828 patent/DE2518828C3/en not_active Expired
-
1976
- 1976-04-02 CH CH410676A patent/CH595617A5/xx not_active IP Right Cessation
- 1976-04-08 IT IT2209376A patent/IT1059619B/en active
- 1976-04-23 FR FR7612007A patent/FR2309938A1/en not_active Withdrawn
- 1976-04-27 GB GB1704176A patent/GB1529022A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2124365A (en) * | 1982-07-28 | 1984-02-15 | Gen Electric | Optical inspection system and method |
EP1503226A3 (en) * | 2003-08-01 | 2007-03-28 | Leuze electronic GmbH + Co KG | Optical sensor |
Also Published As
Publication number | Publication date |
---|---|
DE2518828A1 (en) | 1976-11-04 |
DE2518828B2 (en) | 1978-05-11 |
IT1059619B (en) | 1982-06-21 |
CH595617A5 (en) | 1978-02-15 |
DE2518828C3 (en) | 1979-01-11 |
FR2309938A1 (en) | 1976-11-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |