GB1388131A - Reader mechanism - Google Patents
Reader mechanismInfo
- Publication number
- GB1388131A GB1388131A GB1233572A GB1233572A GB1388131A GB 1388131 A GB1388131 A GB 1388131A GB 1233572 A GB1233572 A GB 1233572A GB 1233572 A GB1233572 A GB 1233572A GB 1388131 A GB1388131 A GB 1388131A
- Authority
- GB
- United Kingdom
- Prior art keywords
- characters
- diaphragm
- light
- focus region
- lens
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
- G06K7/10871—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels randomly oriented data-fields, code-marks therefore, e.g. concentric circles-code
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Artificial Intelligence (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Character Input (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Image Input (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
1388131 Optical character reader ZELLWEGER USTER Ltd 16 March 1972 [22 March 1971] 12335/72 Heading G4M In an optical character reader of the kind where characters are optically scanned, the character being located within a predetermined depth of focus region T defined by a reference plane 6 and two outer planes 6<SP>1</SP> and 6<SP>11</SP>, and the reflected light is passed through a collecting lens 20 to a photo-cell 23, a diaphragm 26 is provided at the focal plane of the collecting lens, the diaphragm having an aperture 27 of a size such that the flux of the light beam reaching the photo-cell is independent of the position of the scanned character within the depth of focus region. Light from, e.g. a helium gas laser, is passed via a lens and mirror system to a rotating mirror scanner. The resulting scanning beam 11<SP>111</SP> is passed via a cylinder lens 17 to a gap between two conveyers (represented by rollers 2B, 2D), across which articles bearing characters are transported. The characters may be in the form of concentric circles or bars. The diaphragm compensates for variations in position of the characters within the depth of focus region by intercepting excess light.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH424171A CH537057A (en) | 1971-03-22 | 1971-03-22 | Reading device for optically recognizable characters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1388131A true GB1388131A (en) | 1975-03-26 |
Family
ID=4272428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1233572A Expired GB1388131A (en) | 1971-03-22 | 1972-03-16 | Reader mechanism |
Country Status (10)
Country | Link |
---|---|
US (1) | US3758783A (en) |
BE (1) | BE780725A (en) |
CA (1) | CA956033A (en) |
CH (1) | CH537057A (en) |
DE (1) | DE2200093C3 (en) |
FR (1) | FR2131405A5 (en) |
GB (1) | GB1388131A (en) |
NL (1) | NL7200754A (en) |
SE (1) | SE389934B (en) |
ZA (1) | ZA721585B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246653A (en) * | 1990-08-03 | 1992-02-05 | Symbol Technologies Inc | Light emitting diode scanner |
US5268564A (en) * | 1990-08-03 | 1993-12-07 | Symbol Technologies, Inc. | Bar code scanner actuated by detection of scanner motion |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4025761A (en) * | 1975-04-16 | 1977-05-24 | Schiller Industries, Inc. | Optical system for code symbol scanners |
US4034230A (en) * | 1975-10-24 | 1977-07-05 | Bulova Watch Company, Inc. | Electro-optical bar-code scanning unit |
US4064390A (en) * | 1976-04-19 | 1977-12-20 | Spectra-Physics, Inc. | Method and apparatus for reading coded labels |
US4745631A (en) * | 1982-12-27 | 1988-05-17 | North American Philips Corp. | Flying spot generator |
US4603262A (en) * | 1983-08-22 | 1986-07-29 | Optel Systems Inc. | Optical device for detecting coded symbols |
US4692603A (en) * | 1985-04-01 | 1987-09-08 | Cauzin Systems, Incorporated | Optical reader for printed bit-encoded data and method of reading same |
WO1987006016A1 (en) * | 1986-04-04 | 1987-10-08 | Eastman Kodak Company | Scanning apparatus |
US5027424A (en) * | 1986-08-29 | 1991-06-25 | Asahi Kogaku Kogyo K.K. | Image reader |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2976361A (en) * | 1956-04-12 | 1961-03-21 | Faximile Inc | Continuous scanner with warped mirror |
US3443072A (en) * | 1964-12-10 | 1969-05-06 | Abex Corp | Object identification systems |
GB1280678A (en) * | 1968-06-27 | 1972-07-05 | Rca Corp | Article designator |
-
1971
- 1971-03-22 CH CH424171A patent/CH537057A/en not_active IP Right Cessation
-
1972
- 1972-01-03 DE DE2200093A patent/DE2200093C3/en not_active Expired
- 1972-01-19 NL NL7200754A patent/NL7200754A/xx unknown
- 1972-01-28 US US00221706A patent/US3758783A/en not_active Expired - Lifetime
- 1972-02-23 CA CA135,365A patent/CA956033A/en not_active Expired
- 1972-02-23 SE SE7202235A patent/SE389934B/en unknown
- 1972-03-08 FR FR7208002A patent/FR2131405A5/fr not_active Expired
- 1972-03-08 ZA ZA721585A patent/ZA721585B/en unknown
- 1972-03-15 BE BE780725A patent/BE780725A/en unknown
- 1972-03-16 GB GB1233572A patent/GB1388131A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2246653A (en) * | 1990-08-03 | 1992-02-05 | Symbol Technologies Inc | Light emitting diode scanner |
US5268564A (en) * | 1990-08-03 | 1993-12-07 | Symbol Technologies, Inc. | Bar code scanner actuated by detection of scanner motion |
GB2246653B (en) * | 1990-08-03 | 1995-02-15 | Symbol Technologies Inc | Method of operating a bar code scanner |
Also Published As
Publication number | Publication date |
---|---|
NL7200754A (en) | 1972-09-26 |
US3758783A (en) | 1973-09-11 |
BE780725A (en) | 1972-07-03 |
DE2200093A1 (en) | 1972-10-05 |
DE2200093B2 (en) | 1977-11-10 |
DE2200093C3 (en) | 1978-06-29 |
CH537057A (en) | 1973-05-15 |
CA956033A (en) | 1974-10-08 |
ZA721585B (en) | 1972-11-29 |
FR2131405A5 (en) | 1972-11-10 |
SE389934B (en) | 1976-11-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |