GB972151A - A system for deriving two different electric signals by scanning both fluorescent and phosphorescent markings provided within a common scanning area - Google Patents
A system for deriving two different electric signals by scanning both fluorescent and phosphorescent markings provided within a common scanning areaInfo
- Publication number
- GB972151A GB972151A GB14355/62A GB1435562A GB972151A GB 972151 A GB972151 A GB 972151A GB 14355/62 A GB14355/62 A GB 14355/62A GB 1435562 A GB1435562 A GB 1435562A GB 972151 A GB972151 A GB 972151A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluorescent
- phosphorescent
- marks
- photo
- deriving
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 230000005855 radiation Effects 0.000 abstract 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6408—Fluorescence; Phosphorescence with measurement of decay time, time resolved fluorescence
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C3/00—Sorting according to destination
- B07C3/10—Apparatus characterised by the means used for detection ofthe destination
- B07C3/14—Apparatus characterised by the means used for detection ofthe destination using light-responsive detecting means
Landscapes
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Sorting Of Articles (AREA)
Abstract
972,151. Distinguishing fluorescence and phosphorescence photo-electrically. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. April 13, 1962 [April 15, 1961], No. 14355/62. Heading G1A. [Also in Division G4] A photo-electric system for deriving two different signals from phosphorescent and fluorescent markings within a common area, uses as a distinguishing criterion the rate at which the intensity of secondary light emission increases. A letter 1, Fig. 5, bearing fluorescent and phosphorescent marks 3, 4 is traversed past a slot 6. Ultraviolet light from a mercury vapour lamp 7 passes through filters 12 to strike the marks 3, 4, producing secondary radiation which passes through a filter 13 to a photo-cell 8. The radiation detector pulses are of the Form 17, Fig. 8a, for fluorescent marks and 18 for phosphorescent marks. These pulses are differentiated to give a signal as shown in Fig. 8b and clipped at a level Us to produce pulses indicative of the fluorescent markings only In a modification, the speed of the letter and the size of slot 6 are so chosen with respect to the properties of the fluorescent and phosphorescent material that the peak of the phosphorescent pulse 22 Fig. 9a is less than that of the fluorescent pulse. The differentiator may then be omitted. In a further modification the differentiator is replaced by an integrator.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET0019989 | 1961-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB972151A true GB972151A (en) | 1964-10-07 |
Family
ID=7549521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14355/62A Expired GB972151A (en) | 1961-04-15 | 1962-04-13 | A system for deriving two different electric signals by scanning both fluorescent and phosphorescent markings provided within a common scanning area |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3180988A (en) |
| DE (1) | DE1449107B1 (en) |
| GB (1) | GB972151A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2217833A (en) * | 1988-04-30 | 1989-11-01 | Cranfield Inst Of Tech | Registration mark detection system |
| GB2240947A (en) * | 1990-02-20 | 1991-08-21 | Aco Electronics Limited | Authentification of documents with luminescent security features |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3483388A (en) * | 1964-09-02 | 1969-12-09 | Burroughs Corp | Apparatus for generating signals indicative of the persistence characteristics of substances made radiant by energizing radiation |
| US3395284A (en) * | 1964-09-23 | 1968-07-30 | Interchem Corp | Device for selectively sensing recorded information |
| US3390268A (en) * | 1965-09-30 | 1968-06-25 | Trw Inc | Electrical apparatus for simulating the optical stimulation of a medium and computing characteristic life-times of said medium |
| US3486006A (en) * | 1966-02-09 | 1969-12-23 | American Cyanamid Co | Coded ink recording and reading |
| US3604941A (en) * | 1969-11-18 | 1971-09-14 | Harris Intertype Corp | System for sensing indicia on moving members |
| ES8203280A1 (en) * | 1980-05-30 | 1982-04-01 | Gao Ges Automation Org | Paper security with authenticity mark of luminescent material and method for the authentication thereof. |
| US4983817A (en) * | 1989-03-01 | 1991-01-08 | Battelle Memorial Institute | Background compensating bar code readers |
| DE3942932A1 (en) * | 1989-12-23 | 1991-06-27 | Licentia Gmbh | METHOD FOR DISTRIBUTING PACKAGES O. AE. |
| EP0700980B1 (en) | 1994-03-17 | 1999-11-17 | Hitachi Maxell, Ltd. | PHOSPHOR, PHOSPHOR COMPOSITION and FLUORESCENT MARK CARRIER |
| DE19651101A1 (en) | 1996-12-09 | 1998-06-10 | Giesecke & Devrient Gmbh | Device and method for the detection of fluorescent and phosphorescent light |
| DE10113268B4 (en) * | 2001-03-16 | 2021-06-24 | Bundesdruckerei Gmbh | Sensor for the authentication of security features on value and / or security documents |
| DE102010014912A1 (en) * | 2010-04-14 | 2011-10-20 | Giesecke & Devrient Gmbh | Sensor for checking value documents |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2609928A (en) * | 1946-12-31 | 1952-09-09 | Doust James Frederick | Apparatus for sorting postal packets |
| US2704634A (en) * | 1949-06-04 | 1955-03-22 | Rauch | |
| US2742631A (en) * | 1954-05-27 | 1956-04-17 | Rca Corp | Method and apparatus for recording and transmitting information using phosphors |
| US2975966A (en) * | 1956-04-09 | 1961-03-21 | Burroughs Corp | Coded document reader |
| DE1158734B (en) * | 1960-10-29 | 1963-12-05 | Telefunken Patent | Method and device for sorting recording media such as in particular mail |
| US3027830A (en) * | 1961-01-19 | 1962-04-03 | Pitney Bowes Inc | Recognition apparatus |
-
1961
- 1961-04-15 DE DE19611449107 patent/DE1449107B1/en active Pending
-
1962
- 1962-04-09 US US186257A patent/US3180988A/en not_active Expired - Lifetime
- 1962-04-13 GB GB14355/62A patent/GB972151A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2217833A (en) * | 1988-04-30 | 1989-11-01 | Cranfield Inst Of Tech | Registration mark detection system |
| GB2240947A (en) * | 1990-02-20 | 1991-08-21 | Aco Electronics Limited | Authentification of documents with luminescent security features |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1449107B1 (en) | 1969-09-04 |
| US3180988A (en) | 1965-04-27 |
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