WO2001050081A2 - Dispositif d'eclairage pour eclairer un objet plat, par stries - Google Patents

Dispositif d'eclairage pour eclairer un objet plat, par stries Download PDF

Info

Publication number
WO2001050081A2
WO2001050081A2 PCT/EP2001/000008 EP0100008W WO0150081A2 WO 2001050081 A2 WO2001050081 A2 WO 2001050081A2 EP 0100008 W EP0100008 W EP 0100008W WO 0150081 A2 WO0150081 A2 WO 0150081A2
Authority
WO
WIPO (PCT)
Prior art keywords
mirror
lighting device
optical axis
segment
mirror segment
Prior art date
Application number
PCT/EP2001/000008
Other languages
German (de)
English (en)
Other versions
WO2001050081A3 (fr
Inventor
Bernd Wunderer
Original Assignee
Giesecke & Devrient 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 Giesecke & Devrient Gmbh filed Critical Giesecke & Devrient Gmbh
Priority to AU23713/01A priority Critical patent/AU2371301A/en
Publication of WO2001050081A2 publication Critical patent/WO2001050081A2/fr
Publication of WO2001050081A3 publication Critical patent/WO2001050081A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
    • H04N1/0285—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array in combination with at least one reflector which is in fixed relation to the light source
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/121—Apparatus characterised by sensor details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
    • H04N1/0286—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array in combination with a light integrating, concentrating or defusing cavity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
    • H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
    • H04N1/0287—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array using a tubular lamp or a combination of such lamps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/12—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanning

Definitions

  • Lighting device for illuminating a flat area
  • the invention relates to a lighting device for illuminating a flat object in the form of a strip, the principle of which can also be used for point or circular lighting.
  • the strip-shaped lighting of an object takes place, for. B. in document scanners which are used for testing sheet-shaped objects, e.g. Banknotes are used.
  • a scanner is described for example in WO 96/36021.
  • the image is recorded by a CCD sensor.
  • the receiving sensor being either a CCD sensor or a photodiode array.
  • Reflected light radiation or transmitted light radiation is recorded by means of photodetector lines from the object illuminated in strips.
  • a contact image sensor e.g. H. with a 1: 1 image
  • the reflected light reaches, for example, a photodetector line or a CCD sensor, which generates digital signals for further processing.
  • the illuminating light in the illumination area for example maximum permissible variation of the light intensity in the longitudinal and width directions of the illuminating strip and minimal variation when the distance of the object changes.
  • These requirements are reflected in the structure of the lighting device.
  • the structure should also meet other requirements, such as a small construction volume, high luminous efficacy, large manufacturing tolerances etc.
  • the efficiency of the lighting system is particularly important to optimize.
  • the known lighting devices can be used in any lighting which uses linear light sources (LED lines, fluorescent lamps, etc.).
  • FIG. 8 shows a perspective, schematic partial illustration of an illumination device 2 for a document scanner for imaging a surface of a bank note BN in strips.
  • the bank note BN is guided past a gap 200 of a housing G of the lighting device 2 in the direction of the arrow.
  • the gap 200 extends in the Y direction of a three-dimensional Cartesian coordinate system.
  • the direction of transport of the bank note BN corresponds to the Z direction.
  • the housing G of the lighting device 2 there are either an essentially linear light source L or (as described in WO 96/36021) a plurality of essentially point-shaped light sources in a mirror arrangement 5 functioning as a reflector 5.
  • the entire arrangement is symmetrical to an optical axis OA.
  • the entire arrangement has a substantially constant cross section along the Y axis.
  • the optical axis OA which is present as a line in two-dimensional cross section, becomes a plane.
  • the gap 200 is located symmetrically to this plane in the front of the housing G.
  • the light bundled by the light source L via the mirror arrangement 5 falls concentratedly through the gap 200 in a strip shape onto the side of the bank note BN which is hidden in FIG.
  • the light reflected from the banknote is detected by a strip-shaped sensor 100 (for example a CCD sensor) accommodated in the housing G, as described in WO 96/36021, through an opening and converted into digital image signals which can be processed further.
  • a strip-shaped sensor 100 for example a CCD sensor
  • the lighting strip in the gap 200 is illustrated in an enlarged representation in FIG. 9.
  • the bank note BN is guided past the gap 200 of the housing G, although the position of the bank note in front of the gap 200 is subject to fluctuations in the direction of the X axis despite suitable guiding means.
  • the illuminated area can therefore be viewed as a volume V with the edge dimensions L, B and T.
  • the bank note BN moves through this volume V in the direction of the arrow, with unevenness of the bank note BN leading to the distance of the bank note BN or one side of the bank note BN from the illumination device being subject to fluctuations within the depth T of the volume V.
  • Requirements for the light distribution and orientation in the volume V shown in FIG. 8 within the gap 200 of the lighting device include good homogeneity over the entire length L, a Defined brightness distribution over the gap width B and an intensity that is as constant as possible over the depth T.
  • Usual lighting devices e.g. B. WO 96/36021, of the type in question have a - in two-dimensional cross-section - symmetrical to the optical axis mirror arrangement with two cross-sections essentially elliptical mirrors. Because of this mirror geometry, the known lighting devices are particularly low in efficiency when the angles at which the light strikes the object must be at a minimum distance from the normal. In order for the intensity distribution to be as homogeneous as possible, in particular in the direction of the optical axis (in the depth T according to FIG. 9), strict manufacturing tolerances must be observed in the manufacture and arrangement of the mirrors. The same applies to the linear or rod-shaped light source. Controlling reflections and stray light is particularly difficult. In order to avoid these undesirable disturbances, the light source or light sources and mirrors should be largely covered from the point of view of the object plane to be illuminated. The light source or light sources are usually covered by an aperture, which is formed in FIG. 8 by the sensor 100 there.
  • the light source itself is covered from the perspective of the object plane.
  • the aperture of the light source is initially limited. If the lighting device is viewed in two-dimensional cross-section, the "aperture” or the “aperture angle” is the angle at which light rays emanating from the light source - directly or indirectly - reach the object plane. In the case of a conventional rod-shaped fluorescent lamp, for example, the light is emitted by the lamp at an angle of 360 ° (2 ⁇ ). The aperture should therefore be as close as possible to this value of 360 °.
  • the invention is based on the object of specifying an illumination device for the strip-shaped illumination of a flat object which, with a small size and good light output, permits largely reflex-free illumination of the object.
  • the invention is based on an illumination device for illuminating a flat object in strip form
  • this lighting device has a substantially constant cross section in planes oriented at right angles to the line, and - In cross-section is symmetrical to an optical axis which is substantially perpendicular to the strip to be illuminated, this lighting device being characterized in that
  • the mirror arrangement symmetrical to the optical axis on each side of the optical axis consists of several mirror segments, at least some of which directly adjoin one another, and
  • mirror segments are optimized with numerical methods in such a way that they have a predetermined profile of brightness in the direction transverse to the stripe and the smallest possible depth variation.
  • the segmentation of the mirror arrangement in sections allows the individual requirements detailed above to be met, and the entirety of the requirements can be optimized.
  • This design according to the invention makes it possible in particular to make the lighting device compatible with existing systems, in particular to meet the requirements for light distribution in the illuminated gap (strip) in such a way that they are at least as good as in the known lighting devices of a comparable type
  • the segmentation of the mirror arrangement according to the invention enables a geometric adaptation as well as the achievement of a brightness which is at least as great in the illuminated strip as in the known arrangement.
  • the intensity distribution in the direction of the optical axis can also be made more uniform by segmenting the mirror arrangement.
  • the angle of incidence for the light beams in the object plane should be greater than a minimum value. This requirement can also be met by segmenting the mirror Achieve an arrangement.
  • the segmentation of the mirror arrangement also makes it possible to provide relatively large radii of curvature for the individual mirror segments and, in particular, to select different directions and imaging properties for the individual sub-bundles.
  • the "circular cylinder” In the direction of the object plane, the "circular cylinder” is followed by a section with one or more segments which are essentially elliptical in cross section. These segments therefore use properties of the already known elliptical arrangement in order to design the beam path in such a way that an area free of light rays is located in the center thereof.
  • the “elliptical” section of the mirror arrangement particularly preferably comprises at least two partial mirror segments. Each partial mirror segment reflects directly from the light source or indirectly from the "cylinder". light beams in the form of a convergent or divergent light beam.
  • This deflecting mirror segment is essentially a hyperbola.
  • the deflecting mirror segment thus deflects the light beams coming from the first of the two partial mirror segments and forms a divergent light beam bundle from a convergent light beam bundle (or vice versa), so that the light beam bundle coming from the second partial mirror segment converts in the object plane from each side divergent and a convergent light beam overlap.
  • the dependence of the intensity in the direction of the optical axis (dependence on distance) can be kept within the required limits.
  • all of the mirror segments adjoin one another in the lighting device according to the invention without gaps.
  • the deflecting mirror segments not only serve to reduce the distance dependency mentioned above by converting a convergent light beam into a divergent light beam (or vice versa), but also with the help of the deflecting mirror segment the requirement to meet the light at an angle to hit the object level, which corresponds to a minimum value. Since the respective deflecting mirror segment from the optical axis naturally has the greatest distance from all the mirror segments and, moreover, is also closest to the object plane, the light beam bundles directed by the deflecting mirror segments onto the object plane can form a large angle with the optical axis.
  • the segmentation of the mirror arrangement ensures that the individual partial light beams leave a large area in the vicinity of the optical axis.
  • the individual mirror segments can be designed in such a way that the above-mentioned aperture in the area free of light rays in the vicinity of the optical axis coincides exactly at its outer edges with the innermost light rays that pass this edge of the aperture , This means that the space available within the mirror arrangement for the partial light beam can be optimally used and / or that the light supplied by the light source is used optimally.
  • the individual mirror segments can be numerically calculated and manufactured using methods familiar to a person skilled in the art with the aid of programs developed for this purpose. All mirror segments, whether they have a circular arc, elliptical or hyperbolic cross-section, can be approximated by polynomials, with sixth-order polynomials already providing sufficient accuracy.
  • the individual parameters can be gradually optimized by segmenting the mirror arrangement. Relatively generous tolerances are possible, which simplifies production.
  • All available lighting systems are suitable for viewing the object in remission as well as in transmission. In remission they serve to observe scattered reflected light and to avoid specular reflections. In transmission, depending on the aperture of the imaging optics, they act as slit-shaped "dark field" lighting. An object only becomes visible due to its refraction or scattering of light.
  • FIG. 1 shows a schematic two-dimensional sectional view of a lighting device according to a first embodiment of the invention
  • FIG. 2 shows a schematic illustration of the embodiment according to FIG. 1 with partially illustrated courses of partial light beam bundles
  • FIG. 3 shows a sketch to illustrate the production of a segmented mirror arrangement according to the invention
  • FIG. 4 shows the beam path of a further embodiment of an illumination device according to the invention.
  • Figure 5 shows the beam path of a mirror arrangement of yet another embodiment of the lighting device according to the invention.
  • FIG. 6 shows a schematic representation of a mirror arrangement which is suitable for a digitized representation of the coordinates of the mirror arrangement for production on a numerically controlled machine
  • FIG. 7 shows the beam path of a mirror arrangement of another embodiment of the lighting device according to the invention.
  • FIG. 8 shows a perspective, partially sectioned illustration of an illumination device with an object to be illuminated in the form of a strip
  • FIG. 9 shows a perspective illustration of an imaginary lighting volume corresponding to the arrangement according to FIG. 8.
  • FIG. 1 shows a two-dimensional sectional view of the mirror arrangement 5, shown generally and schematically in FIG. 7, in its position with respect to the optical axis OA and the bank note BN to be illuminated in strips.
  • the mirror arrangement 5 shown in FIG. 1 (apart from a possible section) has a substantially constant cross section along the Y- Axis.
  • the lighting device 2 also includes a lamp L shown here in a dot shape and an aperture B.
  • a sensor 100 arranged thereon can detect the illuminated side of the bank note BN.
  • the sensor 100 can z. B. be designed as a contact sensor ( Figure 1: 1) or have a different imaging ratio.
  • the mirror arrangement S is symmetrical with respect to the optical axis OA, that is to say in a three-dimensional arrangement the mirror arrangement S is symmetrical with respect to a plane of symmetry defined by the optical axis OA.
  • the mirror arrangement S contains three segments S1, S2 and S3.
  • the segment S1 is - on each side of the optical axis OA - a mirror segment with an arcuate cross section, also referred to here as a "cylinder".
  • the coil S1 of the lamp L which is ideally to be assumed to be point-like, is mapped onto itself.
  • the mirror segment S2 is divided into a first partial mirror segment S21 and a second partial mirror segment S22.
  • the two partial mirror segments each have an essentially elliptical cross section, but the cross sections are different from one another.
  • the second partial mirror segment S22 is followed by a deflecting mirror segment S3, which is essentially hyperbolic in cross section. All mirror segments S1, S2 and S3 are directly adjacent to one another, the same applies to the two partial mirror segments S21 and S22.
  • Figure 2 illustrates the beam path in the lighting device 2 according to the first embodiment of the invention.
  • the two-dimensional nalen cross section to a point idealized light source L gives light directly on the two partial mirror segments S21 and S22, also indirectly via the mirror segment Sl on these partial mirror segments S21 and S22.
  • the partial mirror segments S21 and S22 Due to the shape of the partial mirror segments S21 and S22, convergent light beams are reflected from these segments.
  • the convergent light beam coming from the partial mirror segment S21 is reflected by the deflecting mirror segment S3 in the form of a divergent light beam.
  • a converging and a diverging beam of light beams overlap on both sides of the optical axis OA. This leads to a more uniform distribution of the intensity in the direction of the optical axis OA (depth T in FIG. 8).
  • an optical system with desired imaging properties can be attached, which, for. B. for a contact image sensor ( Figure 1: 1) or for other imaging conditions, depending on the sensor 100 used. It can be seen from the beam path shown that this is made possible because this area is free of radiation from the light source L.
  • FIG. 3 schematically shows how a segmented mirror arrangement, as shown in FIGS. 1 and 2, can be obtained from a body K, for example by milling.
  • the first mirror segment S1 is defined by a part of a circle with the radius Rl.
  • the first partial mirror section of elliptical cross section is formed by a part of an ellipse E21.
  • the second partial mirror segment S22 is defined by a partial area of an ellipse E22.
  • the deflecting mirror segment S3 is defined by part of a hyperbola H3. Planning, simulation and production of such a mirror arrangement are easily possible with currently common numerical aids.
  • a coordinate system can be used to represent the individual coordinates, as is shown schematically in FIG.
  • the area to the left of the aperture B free of light rays can also be defined with the help of the coordinates for the aperture B and the light source L.
  • a dotted line in FIG. 6 indicates that the Light rays coming from the light source L still strike the object-side edge of the mirror segment S22, but no longer on the edge of the deflecting mirror segment S3 lying to the side of the light source.
  • the dashed line in FIG. 6 shows that the reflected light beam coming from the left-most edge of the first partial mirror segment S21 just falls on the right-most edge of the deflecting mirror segment S3. This makes it clear that as few reflections as possible take place in this mirror arrangement, that there is maximum use of space, and that the available light from the light source L is optimally used.
  • FIG. 4 shows an embodiment of a mirror arrangement of the lighting device according to the invention which is more favorable with regard to the utilization of the light source and less favorable with regard to the impingement bundles.
  • a first mirror segment S101 (one on each side of the optical axis OA) is formed by an elliptical segment. This is immediately followed by a second elliptical partial mirror segment S121 and flat or hyperbolic partial mirror segment S122.
  • the mirror segment S121 reflects the light rays coming directly from the light source L as a convergent light beam onto the object plane of a bank note BN.
  • the partial mirror segment S122 reflects the convergent light beam from the mirror segment S101 that strikes it in the form of a likewise convergent light beam.
  • S101 and S122 can also be designed so that they generate a divergent bundle.
  • the used light source aperture of this arrangement is greater than 270 °.
  • FIG. 5 shows a still further modification of a mirror arrangement of an illumination device according to the invention.
  • the mirror segment S1 is a "cylinder", similar to the exemplary embodiment according to FIG. 1.
  • the adjoining elliptical partial mirror segment S221 is oriented in such a way that the converging light beam reflected by it intersects with the corresponding light beam from the other side of the optical axis OA, in order from the deflecting mirror segment S203 as a divergent light beam onto the object plane to be directed.
  • the course of the light beam, which is reflected by the second partial mirror segment S222, corresponds essentially to the beam path according to FIG. 2, which starts from the partial mirror segment S22.
  • FIG. 7 shows another modification of a mirror arrangement of an illumination device according to the invention.
  • a mirror segment Sl such as. B. in Figures 1 and 5, was omitted.
  • the bundle generated by Sll is initially deflected only slightly and converges relatively strongly.
  • S21 makes this bundle divergent and directs it onto the gap to be illuminated.
  • the generated by S12 Bundles first cross over and also converge.
  • the S22 segments redirect and reduce divergence.
  • Panels can be attached to the locations indicated by Bl, B2 and B3. This embodiment is preferable if the angles of incidence have to be chosen even larger.
  • Aperture angle mapped onto the surface Depending on the light path, losses result from one, two or three reflections.
  • the illuminated area could e.g. be the entry opening of a light guide. Except for shadowing caused by the mounting of a real lamp, which in principle can be minimized by constructive expenditure, and the described reflection losses, the system has the maximum theoretically possible efficiency.
  • a slight modification of the structure also makes it possible to generate a parallel light beam instead of the convergent one. This gives you the ideal headlight.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un dispositif d'éclairage permettant d'éclairer un objet plat (BN), par stries, qui contient un système de miroirs, disposé en section transversale, symétriquement à un axe optique (OA) et composé de plusieurs segments de miroir (S1,S2,S22,S3) se jouxtant mutuellement successivement. La segmentation du système de miroirs permet d'éviter des interférences indésirables dues aux reflets et à la lumière diffusée, de réduire la dépendance de l'intensité lumineuse dans le plan d'objet, à distance de l'objet, ainsi que la profondeur hors tout de l'ensemble du système.
PCT/EP2001/000008 2000-01-03 2001-01-02 Dispositif d'eclairage pour eclairer un objet plat, par stries WO2001050081A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU23713/01A AU2371301A (en) 2000-01-03 2001-01-02 Illumination device for the strip-wise illumination of a flat article

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10000029A DE10000029A1 (de) 2000-01-03 2000-01-03 Beleuchtungsvorrichtung zum streifenförmigen Beleuchten eines flächigen Objekts
DE10000029.0 2000-01-03

Publications (2)

Publication Number Publication Date
WO2001050081A2 true WO2001050081A2 (fr) 2001-07-12
WO2001050081A3 WO2001050081A3 (fr) 2002-04-18

Family

ID=7626686

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/000008 WO2001050081A2 (fr) 2000-01-03 2001-01-02 Dispositif d'eclairage pour eclairer un objet plat, par stries

Country Status (3)

Country Link
AU (1) AU2371301A (fr)
DE (1) DE10000029A1 (fr)
WO (1) WO2001050081A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7600898B2 (en) 2003-09-10 2009-10-13 Giesecke & Devrient Gmbh Illuminating device for linearly illuminating a flat object

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011096411A1 (fr) * 2010-02-05 2011-08-11 株式会社 東芝 Dispositif d'éclairage et dispositif de lecture d'images équipé du dispositif d'éclairage
EP3465170B1 (fr) * 2016-05-30 2024-01-24 Bobst Mex Sa Poste de contrôle de qualité pour une machine de traitement d'éléments en feuilles ayant une unité d'éclairage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996036021A1 (fr) 1995-05-11 1996-11-14 Giesecke & Devrient Gmbh Dispositif et procede pour le controle d'objets sous forme de feuilles tels que des billets de banque ou des titres

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1687341U (de) * 1954-07-22 1954-11-18 Erlinger Metallwarenfabrik G M Reflektorleuchte bzw. reflektor fuer stabfoermige lampen, insbesondere fluoreszenzlampen.
CH366406A (fr) * 1960-08-20 1962-12-31 Infranor Sa Projecteur donnant un éclairement pratiquement uniforme sur une surface rectangulaire
DD97938A1 (fr) * 1971-08-18 1973-05-21
US5195814A (en) * 1991-02-15 1993-03-23 Asahi Kogaku Kogyo Kabushiki Kaisha Strobe unit
DE19532877A1 (de) * 1995-09-06 1997-03-13 Giesecke & Devrient Gmbh Vorrichtung zur linienförmigen Beleuchtung von Blattgut, wie z. B. Banknoten oder Wertpapiere
US5921666A (en) * 1997-03-04 1999-07-13 Thomas Lighting Ellipsoidal slot light

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996036021A1 (fr) 1995-05-11 1996-11-14 Giesecke & Devrient Gmbh Dispositif et procede pour le controle d'objets sous forme de feuilles tels que des billets de banque ou des titres

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7600898B2 (en) 2003-09-10 2009-10-13 Giesecke & Devrient Gmbh Illuminating device for linearly illuminating a flat object

Also Published As

Publication number Publication date
AU2371301A (en) 2001-07-16
DE10000029A1 (de) 2001-07-05
WO2001050081A3 (fr) 2002-04-18

Similar Documents

Publication Publication Date Title
EP1655600B1 (fr) Détecteur de fil
DE3212698C2 (fr)
DE69718597T2 (de) Beleuchtungseinrichtung und photographische Kamera
DE10197205T5 (de) Optisches Kopplungssystem
EP0762174B1 (fr) Dispositif d'éclairage linéaire de matériaux sous forme de feuilles comme par exemple des billets de banque ou papiers de valeur
AT15178U1 (de) Optisches Element, sowie Anordnung zur Lichtabgabe
EP3531012B1 (fr) Dispositif d'éclairage pour véhicules automobiles pourvu de guide de lumière allongé
DE112017001072B4 (de) Lichtleiter, Detektor mit Lichtleiter und Ladungsträgerstrahlvorrichtung
DE19752416A1 (de) Verfahren und Vorrichtung zum Kombinieren der Strahlungsleistung einer linearen Anordnung von Strahlenquellen
DE7935901U1 (de) Strahlungsdetektor
DE102012107456A1 (de) Anordnung zur Formung von Laserstrahlung
DE10297565T5 (de) Mapping-Sensor für Halbleiterwaferträger
DE2135698A1 (de) Optisches System insbesondere Projektor
WO2001050081A2 (fr) Dispositif d'eclairage pour eclairer un objet plat, par stries
WO2024012878A1 (fr) Appareil de mesure confocale chromatique de distances
DE3707986C2 (fr)
DE102015213827A1 (de) Vorsatzoptik für eine Signalleuchte einer Kraftfahrzeugbeleuchtungseinrichtung
EP3832194B1 (fr) Système optique permettant d'influencer l'émission lumineuse d'une source lumineuse allongée
DE102021133312A1 (de) Verfahren und systeme für ein adaptives beleuchtungssystem für bildgebungsanwendungen
EP1279988B1 (fr) Appareillage d'illumination laser pour illuminer une partie rectiligne ou une bande
DE102019123515B4 (de) Kraftfahrzeugscheinwerfer mit zwei Projektionslichtmodulen unterschiedlicher Brennweite und gleich breit ausgeleuchteten Lichtaustrittslinsen
EP1335218A1 (fr) Arrangement guide de lumière et dispositif d'illumination avec un tel arrangement
EP1156268B1 (fr) Lampe à guide de lumière avec structure réfractive non uniforme
DE102022129827B3 (de) Optoelektronischer sensor
DE10062454B4 (de) Verfahren und Vorrichtung zur Überlagerung von Strahlenbündeln

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP