RU2000100333A - DEVICE FOR RECOGNITION OF OPTICAL DIFFRACTION METHODS - Google Patents
DEVICE FOR RECOGNITION OF OPTICAL DIFFRACTION METHODSInfo
- Publication number
- RU2000100333A RU2000100333A RU2000100333/09A RU2000100333A RU2000100333A RU 2000100333 A RU2000100333 A RU 2000100333A RU 2000100333/09 A RU2000100333/09 A RU 2000100333/09A RU 2000100333 A RU2000100333 A RU 2000100333A RU 2000100333 A RU2000100333 A RU 2000100333A
- Authority
- RU
- Russia
- Prior art keywords
- light source
- light
- photodetectors
- beams
- plane
- Prior art date
Links
- 230000003287 optical Effects 0.000 title claims 22
- 239000000758 substrate Substances 0.000 claims 6
- 210000001747 Pupil Anatomy 0.000 claims 5
- 230000000875 corresponding Effects 0.000 claims 2
- 230000004907 flux Effects 0.000 claims 2
- 230000000051 modifying Effects 0.000 claims 2
- 230000001105 regulatory Effects 0.000 claims 1
Claims (1)
отличающееся тем, что выходной зрачок (33) источника света (1) находится в удаленной от плоскости считывания (25) фокальной плоскости (8') создающего сходящиеся пучки элемента (2 и 53) с большой апертурой, который расположен между источником света (1) и плоскостью считывания (25) и который служит для создания параллельного пучка лучей (10), освещающих плоскость считывания (25) из конуса пучка (9), выходящего из выходного зрачка (33); между метками (11) и фотодетекторами (5,5', 6,6') располагается элемент (2), создающий сходящиеся пучки, который приспособлен для фокусировки параллельных световых пучков (15,16,16'), дифрагировавших на метках (11) и отраженных на подложке (3,24) соответственно на действующие поверхности (12,12') фотодетекторов (5,6 и 5',6'), где действующая поверхность располагается на фокальной поверхности (8' и 45 и 46) элемента, создающего сходящиеся пучки (2), фотодетекторы (5,5',6,6') приспособлены для получения электрических сигналов S1 и S2, соответственно, пропорциональных интенсивности дифрагировавших световых пучков (15 и 16), падающих на действующие поверхности (12 и 12'), и вычислительный блок (17) приспособлен для формирования выходных сигналов X, Y от каждой пары электрических сигналов S1, S2 и, по меньшей мере, для вычисления относительных разностей RD=(X-Y):(X+Y) от выходных сигналов X, Y каждой пары фотодетекторов (А-А', а-а', В-В', b-b', C-C', c-c', D-D', d-d') и для идентификации элемента защиты (4) с помощью вычисленных относительных разностей RD.1. Device for the simultaneous automatic recognition of optical diffraction marks (11) of the security element (4) on a substrate (3; 24) located in the read plane (25), having a light source (1) for illuminating with light (10), at least , a given wavelength λ on the reading plane (25) of at least three pairs of photodetectors (A-A ', a-a', B-B ', b-b', C-C ', c-c', D-D ', d-d'), each of which contains two photodetectors (5.5 ', 6.6'), which are located symmetrically with respect to the optical axis (7), which determine the diffraction plane (100,101,102,103) and which They are adapted for converting light beams (15,16,16 '), diffracted on the marks (11) or reflected on the substrate (3, 24), respectively, into pairs of photodetectors (5.5', 6, 6 '); and a computing unit (17) for computing signals S1, S2,
characterized in that the exit pupil (33) of the light source (1) is located in a focal plane (8 ') remote from the reading plane (25) which creates converging beams of the element (2 and 53) with a large aperture, which is located between the light source (1) and a reading plane (25) and which serves to create a parallel beam of rays (10) illuminating the reading plane (25) from the cone of the beam (9) emerging from the exit pupil (33); between the marks (11) and photodetectors (5.5 ', 6.6') there is an element (2) that creates converging beams, which is adapted for focusing parallel light beams (15.16.16 ') diffracted on the marks (11) and reflected on the substrate (3.24) respectively on the active surfaces (12.12 ') of the photodetectors (5.6 and 5', 6 '), where the active surface is located on the focal surface (8' and 45 and 46) of the element that creates converging beams (2), photodetectors (5.5 ', 6.6') are adapted to receive electrical signals S1 and S2, respectively, proportional to the intensity diffracted light beams (15 and 16) incident on the acting surfaces (12 and 12 '), and the computing unit (17) is adapted to generate output signals X, Y from each pair of electrical signals S1, S2, and at least for calculating the relative differences RD = (XY) :( X + Y) from the output signals X, Y of each pair of photodetectors (A-A ', a-a', B-B ', b-b', C-C ', c -c ', D-D', d-d ') and to identify the security element (4) using the calculated relative differences RD.
6. Устройство по п.4, отличающееся тем, что источник света (1) приспособлен для переключения между заданными значениями длин волн λ′1,λ′2 длины волны λ светового излучения, излучаемого источником света (1).5. The device according to claim 4, characterized in that the light source (1) is adapted to emit polychromatic light with two values of wavelengths λ 1 and λ 2 .
6. The device according to claim 4, characterized in that the light source (1) is adapted to switch between predetermined wavelengths λ ′ 1 , λ ′ 2 of the wavelength λ of the light radiation emitted by the light source (1).
a) блок обработки данных (21) с памятью (22) для всех стандартных значений,
b) устройство формирования сигнала суммы X+Y из всех пар выходных сигналов Х и Y,
c) тестирующие устройства для сравнения всех сигналов суммы X+Y с набором значений, сохраненных в памяти (22) первого заданного диапазона S и нижней предельной величины U, и всех относительных разностей RD со значениями верхней предельной величины L заданных разрешенных диапазонов N и Р, которые сохраняются в памяти (22),
d) блок для формирования результата работы Z всех тестирующих устройств, который представляет элемент защиты (4), и
e) блок для распознавания элемента защиты (4) путем сравнения полученного результата Z с дополнительными стандартными значениями KS из памяти (22).9. The device according to claim 1, characterized in that the computing unit (17) further includes:
a) data processing unit (21) with memory (22) for all standard values,
b) a device for generating a signal of the sum of X + Y from all pairs of output signals X and Y,
c) testing devices for comparing all signals of the sum X + Y with the set of values stored in the memory (22) of the first given range S and the lower limit value U, and all relative differences RD with the values of the upper limit value L of the given allowed ranges N and P, which are stored in memory (22),
d) a unit for generating the result of the operation Z of all testing devices that represents the security element (4), and
e) a unit for recognizing the security element (4) by comparing the obtained result Z with additional standard values KS from the memory (22).
отличающееся тем, что выходной зрачок (33) источника света (1) находится в удаленной от плоскости считывания (25) фокальной плоскости (8') создающего сходящиеся пучки элемента (2 и 53) с большой апертурой, который расположен между источником света (1) и плоскостью считывания (25) и который служит для создания параллельного пучка лучей (10), освещающих плоскость считывания (25) из конуса пучка (9), выходящего из выходного зрачка (33), между метками (11) и фотодетекторами (5,5',6,6',50) располагается элемент (2), создающий сходящиеся пучки, который приспособлен для фокусировки параллельных световых пучков (15,16,16'), дифрагировавших на метках (11) и отраженных на подложке (3,24), соответственно, на действующие поверхности (12,12')фотодетекторов (5,6,5', 6', 50), где действующая поверхность располагается в фокальной плоскости (8' и 45 и 46) элемента, создающего сходящиеся пучки (2), вычислительный блок (17) приспособлен для считывания электрических сигналов S1, S2 фотодетекторов (5,5', 6,6',50) и для распознавания оптического изображения, которое получается при освещении оптических меток (11) в фокальной плоскости (8' и 45 и 46), где вычисление производится по следующим этапам:
a) сравнение оптического изображения, снятого фотодетекторами (5,5', 6,6', 50) со стандартными изображениями, сохраняемыми в памяти (22), по меньшей мере, с тремя парами точек концентрации интенсивности, симметричных по отношению к оптической оси (7 и 43) элемента (2), создающего сходящиеся пучки,
b) объединение пар выходных сигналов Х и Y соответствующих фотодетекторов (5,5',6,6',50) с парами точек концентрации интенсивности в стандартном изображении, где выходные сигналы Х и Y соответствуют сигналам S1 и S2 в соответствующих точках концентрации интенсивности в оптическом изображении дифрагировавших световых пучков (15,16,16'), где каждая пара выходных сигналов Х и Y создается одной из оптических меток 11 с заданными параметрами решетки, и
с) вычисление относительных разностей RD=(X-Y):(X+Y) из выходных сигналов X, Y каждой пары сигналов (А-А', а-а', В-В', b-b', C-C', c-c', D-D', d-d'); и
вычислительный блок (17) приспособлен для идентификации элемента защиты (4) с помощью вычисленных относительных разностей RD.10. Device for the simultaneous automatic recognition of optical diffraction marks (11) of the security element (4) on a substrate (3; 24) located in the reading plane (25), having a light source (1) for illuminating with light (10), at least , of a given wavelength λ on the reading plane (25) of photodetectors (5.5 ', 6.6', 50) for converting light beams (15.16.16 ') diffracted on the marks (11) and reflected on the substrate (3 , 24), respectively, into the electrical signals S1, S2, proportional to the intensities of the reflected light beams (15,16,16 '), and the calculator the first unit (17) for calculating the signals S1, S2,
characterized in that the exit pupil (33) of the light source (1) is located in a focal plane (8 ') remote from the reading plane (25) which creates converging beams of the element (2 and 53) with a large aperture, which is located between the light source (1) and a reading plane (25) and which serves to create a parallel beam of rays (10) illuminating the reading plane (25) from the cone of the beam (9) emerging from the exit pupil (33) between the marks (11) and photo detectors (5.5 ', 6,6', 50) there is an element (2) that creates converging beams, which is adapted for foci arrays of parallel light beams (15.16.16 '), diffracted on the marks (11) and reflected on the substrate (3.24), respectively, on the acting surfaces (12.12') of photodetectors (5.6.5 ', 6 ', 50), where the active surface is located in the focal plane (8' and 45 and 46) of the element creating convergent beams (2), the computing unit (17) is adapted to read electrical signals S1, S2 of photodetectors (5.5 ', 6 , 6 ', 50) and for recognition of the optical image, which is obtained by illuminating the optical marks (11) in the focal plane (8' and 45 and 46), where it is calculated It is carried out in the following stages:
a) comparing the optical image captured by photodetectors (5.5 ', 6.6', 50) with standard images stored in memory (22) with at least three pairs of intensity concentration points symmetric with respect to the optical axis ( 7 and 43) of the element (2) creating convergent beams,
b) combining the pairs of output signals X and Y of the corresponding photodetectors (5.5 ', 6.6', 50) with pairs of intensity concentration points in the standard image, where the output signals X and Y correspond to signals S1 and S2 at the corresponding intensity concentration points in optical image of diffracted light beams (15,16,16 '), where each pair of output signals X and Y is created by one of the optical labels 11 with the specified lattice parameters, and
c) the calculation of the relative differences RD = (XY) :( X + Y) from the output signals X, Y of each pair of signals (A-A ', a-a', B-B ', b-b', C-C ' , c-c ', D-D', d-d '); and
the computing unit (17) is adapted to identify the security element (4) using the calculated relative differences RD.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01367/97A CH693693A5 (en) | 1997-06-06 | 1997-06-06 | An apparatus for detecting optical diffraction markings. |
CH1367/97 | 1997-06-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2000100333A true RU2000100333A (en) | 2001-12-10 |
RU2208248C2 RU2208248C2 (en) | 2003-07-10 |
Family
ID=4208768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2000100333/09A RU2208248C2 (en) | 1997-06-06 | 1998-06-03 | Device for identifying optical diffraction labels |
Country Status (14)
Country | Link |
---|---|
US (1) | US6365907B1 (en) |
EP (1) | EP0986795B1 (en) |
JP (1) | JP4094068B2 (en) |
KR (1) | KR100403420B1 (en) |
CN (1) | CN1179300C (en) |
AT (1) | ATE230868T1 (en) |
AU (1) | AU738610B2 (en) |
CA (1) | CA2297890C (en) |
CH (1) | CH693693A5 (en) |
DE (1) | DE59806870D1 (en) |
ES (1) | ES2190593T3 (en) |
HK (1) | HK1027651A1 (en) |
RU (1) | RU2208248C2 (en) |
WO (1) | WO1998055963A1 (en) |
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-
1997
- 1997-06-06 CH CH01367/97A patent/CH693693A5/en not_active IP Right Cessation
-
1998
- 1998-06-03 CN CNB988074184A patent/CN1179300C/en not_active Expired - Fee Related
- 1998-06-03 DE DE59806870T patent/DE59806870D1/en not_active Expired - Lifetime
- 1998-06-03 WO PCT/EP1998/003302 patent/WO1998055963A1/en active IP Right Grant
- 1998-06-03 AT AT98929414T patent/ATE230868T1/en active
- 1998-06-03 RU RU2000100333/09A patent/RU2208248C2/en not_active IP Right Cessation
- 1998-06-03 US US09/445,319 patent/US6365907B1/en not_active Expired - Lifetime
- 1998-06-03 EP EP98929414A patent/EP0986795B1/en not_active Expired - Lifetime
- 1998-06-03 KR KR10-1999-7011512A patent/KR100403420B1/en not_active IP Right Cessation
- 1998-06-03 AU AU79180/98A patent/AU738610B2/en not_active Ceased
- 1998-06-03 ES ES98929414T patent/ES2190593T3/en not_active Expired - Lifetime
- 1998-06-03 CA CA002297890A patent/CA2297890C/en not_active Expired - Fee Related
- 1998-06-03 JP JP50149599A patent/JP4094068B2/en not_active Expired - Fee Related
-
2000
- 2000-08-15 HK HK00105091A patent/HK1027651A1/en not_active IP Right Cessation
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