GB2117133A - Holographic identification and/or security device - Google Patents

Holographic identification and/or security device Download PDF

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Publication number
GB2117133A
GB2117133A GB08307308A GB8307308A GB2117133A GB 2117133 A GB2117133 A GB 2117133A GB 08307308 A GB08307308 A GB 08307308A GB 8307308 A GB8307308 A GB 8307308A GB 2117133 A GB2117133 A GB 2117133A
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GB
United Kingdom
Prior art keywords
hologram
images
holograms
security device
identification
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.)
Withdrawn
Application number
GB08307308A
Other versions
GB8307308D0 (en
Inventor
Jeffrey Blyth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08307308A priority Critical patent/GB2117133A/en
Publication of GB8307308D0 publication Critical patent/GB8307308D0/en
Publication of GB2117133A publication Critical patent/GB2117133A/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/0402—Recording geometries or arrangements
    • G03H1/041—Optical element in the object space affecting the object beam, not otherwise provided for
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/16—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Holo Graphy (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

An identification and/or security device comprising or incorporating a hologram which has a plurality of images at least one, some or all of which are images of other holograms, thereby to render the hologram substantially non-reproducible.

Description

SPECIFICATION Improvements in identification devices This invention relates generally to identification devices, and in particular to devices such as identification and/or security cards, labels, tags and like devices which are offered or presented for examination to identify a person and/or object with whom the device is associated, e.g. the card holder, or are displayed to obviate counterfeiting.
Identification cards are well known, both for visual and machine inspection. In the latter case it is relatively easy to build codes into the card, which codes may not be visually apparent, to enable the machine to verify only an authentic card, and it can readily be made extremely difficult to force a card which will deceive the machine.
However, identification cards for visual inspection by the human eye to verify the holder can more readily be forged, because it is difficult to incorporate into the card a unique feature which, although readily apparent to the eye, is not readily reproducible.
It is an object of this invention to provide an identification and/or security device which substantially overcomes the above-described problem.
According to the present invention, there is provided an identification and/or security device which incorporates a hologram having at least one holographic image which is an image of at least part of another hologram.
Preferably, the hologram has two or more holographic images, at least one, some or all of which are images of at least parts of other holograms.
Thus, the hologram may have a plurality of images comprised by a mixture of images of real objects and of other holograms or of parts of other holograms cut into various shapes.
Preferably, the hologram is a hologram visible from the front by reflection of incident natural light. However, in this case, the hologram may also be light transmissive so as simultaneously to expose to view an image such as a photograph carried by a second film behind the hologram. The two films can be adhered together, e.g., by wetting one or both emulsions with water or a hydrophilic chemical.
It is also practical to seal or even encapsulate the hologram (and second film when provided) in a sealed at least partially transparent cover.
The basic hologram employed in the invention is, as mentioned above, preferably one visible by reflection, which as used herein is employed in the conventional context applicable to holography, wherein images are seen by light returned from the hologram to the same side thereof from which the light is incident, although it will be understood that the "reflected" images are in fact produced by a special case of diffraction. Such hologram can be produced by a monochromatic laser. Normally, a hologram to be viewed by reflection has a coating of black paint applied to its back surface; the hologram of this invention can have such black paint coating omitted so as to render the hologram light transmissive, even though, at the same time, the hologram image or images are visible by reflection in natural light.In this connection, although the ability to inspect the security device in natural light is essential, the images will also readily be apparent in any artificial or other "white" or non-monochromatic light Further security may be imparted by colouring the hologram, for example by deformation of the film emulsion thereof, as described in my copending Patent Application No. . A hologram which is multi-coloured, especially with colours gradually shading from one colour into another, is virtually nonreproducible in itself.The hologram of this invention is also extremely difficult to reproduce either by direct copying, because then the images at differing depths tend to interfere with one another, or by reproducing the basic combination of objects for image production on a fresh film, because these objects must include at least one object itself consisting of a hologram or part thereof. It will therefore be apparent that a complex combination of real objects and objects in the form of pieces cut from other holograms is virtually non-reproducible.
When the present invention is used in combination with the invention of my abovementioned application, security against copying, forgery, reproduction and counterfeiting is ensured to the greatest possible extent.
A particular example of identification and/or security device in accordance with the invention will now be described by way of example.
This device comprises a light-transmissive hologram and behind it and adhered thereto by wetting of the film emulsions, a photograph of the holder of the device.
The hologram can be a multi-colour hologram and presents a plurality of images, say at least four, which may be all the same, two or more the same, or all different. Some or all of the images are images of holograms or parts of larger holograms cut into various shapes. A preferred hologram has images which are a combination of images of real objects, selected for difficulty of duplication, and cut pieces of other holograms.
When reflective holograms are used as objects for production of images in the hologram of this invention, the colour of the object holograms matches the wavelength of the laser light used for production of the hologram of the invention, e.g. if red laser light is used the object holograms will be seen as a red colour when viewed in white light The colours and images of the hologram are visible when the card is inspected in natural light reflected from the hologram. In addition, of course, the colours and images will generally be readily visible when the card is inspected in artificial or any other "white" light. The less diffused the light, the clearer the images will be. At the same time, because the hologram is unblacked at the back and is therefore rendered light transmissive, the photograph at the back will be seen simultaneously when the device is inspected.
The present invention can also be practised with a hologram of the kind in which the images are seen by viewing through the hologram rather than reflection from it. Such a hologram, although slightly easier to reproduce, will still provide a very secure identification device when the objects used for production of the holographic images include parts or pieces of other holograms.
Although the use of a specially coloured hologram is not essential, when it is employed it can be produced by any of the methods specified in my above-mentioned copending patent application.
It will be appreciated that it is not essential for the film adhered to the back of the hologram to be a photograph. The backing film can hold any distinctive image, and this can also be selected to interfere with the hologram images to minimise risk of optical reproduction of the composite device.

Claims (10)

1. An identification and/or security device comprising a hologram having at least one holographic image which is an image of at least part of another hologram.
2. A device according to claim 1, wherein the hologram has two or more holographic images, at least one, some or all of which are images of at least parts of other holograms.
3. A device according to claim 2, wherein the two or more images comprise a mixture of images of real objects and of parts of other holograms.
4. A device according to claim 2 or claim 3, wherein said other holograms or parts thereof are reflective holograms.
5. A device according to any of claims 1 to 4, comprising a hologram of the reflective type.
6. A device according to claim 5, wherein the hologram is also light transmissive to enable viewing of a second security device, such as a photograph, behind it.
7. A device according to claim 6, wherein the second security device is also a film bearing an image, adhered to the back of the hologram.
8. A device according to any of claims 1 to 7, wherein the hologram (and backing when provided) are sealed or encapsulated in an at least partially transparent cover.
9. A device according to any of claims 1 to 8, wherein the hologram is a multi-coloured hologram.
10. An identification and/or security device substantially as hereinbefore described.
GB08307308A 1982-03-18 1983-03-16 Holographic identification and/or security device Withdrawn GB2117133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08307308A GB2117133A (en) 1982-03-18 1983-03-16 Holographic identification and/or security device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8207945 1982-03-18
GB08307308A GB2117133A (en) 1982-03-18 1983-03-16 Holographic identification and/or security device

Publications (2)

Publication Number Publication Date
GB8307308D0 GB8307308D0 (en) 1983-04-20
GB2117133A true GB2117133A (en) 1983-10-05

Family

ID=26282287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08307308A Withdrawn GB2117133A (en) 1982-03-18 1983-03-16 Holographic identification and/or security device

Country Status (1)

Country Link
GB (1) GB2117133A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177852A2 (en) * 1984-10-11 1986-04-16 Holtronic GmbH Method for producing a black and white embossable hologram with white light reconstruction
FR2597220A1 (en) * 1986-04-15 1987-10-16 Sadoun Henry Method for authenticating distinctive signs and signs obtained thereby
WO1993024333A1 (en) * 1992-05-26 1993-12-09 De La Rue Holographics Limited Holographic security device
FR2719687A1 (en) * 1994-05-04 1995-11-10 Hologram Ind Sarl Method for marking products or documents, product thus marked and means for implementing the method and a device for verifying such a product or document.
US6280891B2 (en) 1994-05-04 2001-08-28 Hologram Industries S.A. Multi-layer assembly and method for marking articles and resulting marked articles

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1343924A (en) * 1970-04-23 1974-01-16 Rca Corp Holographic memory system
GB1383470A (en) * 1972-06-26 1974-02-12 Deere & Co Tractor front end construction
GB1358968A (en) * 1971-03-31 1974-07-03 Sanyo Electric Co Information input system using holography
GB1507236A (en) * 1975-10-01 1978-04-12 Id Kort Ab Method of establishing information
GB1527442A (en) * 1975-12-22 1978-10-04 Hoechst Ag Process and apparatus for the manufacture of identification elements and identification elements manufactured accordingly
GB1558364A (en) * 1975-10-14 1979-12-28 Siemens Ag Identity cards

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1343924A (en) * 1970-04-23 1974-01-16 Rca Corp Holographic memory system
GB1358968A (en) * 1971-03-31 1974-07-03 Sanyo Electric Co Information input system using holography
GB1383470A (en) * 1972-06-26 1974-02-12 Deere & Co Tractor front end construction
GB1507236A (en) * 1975-10-01 1978-04-12 Id Kort Ab Method of establishing information
GB1558364A (en) * 1975-10-14 1979-12-28 Siemens Ag Identity cards
GB1527442A (en) * 1975-12-22 1978-10-04 Hoechst Ag Process and apparatus for the manufacture of identification elements and identification elements manufactured accordingly

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0177852A2 (en) * 1984-10-11 1986-04-16 Holtronic GmbH Method for producing a black and white embossable hologram with white light reconstruction
EP0177852A3 (en) * 1984-10-11 1988-03-23 Holtronic GmbH Method for producing a black and white embossable hologram with white light reconstruction
FR2597220A1 (en) * 1986-04-15 1987-10-16 Sadoun Henry Method for authenticating distinctive signs and signs obtained thereby
WO1993024333A1 (en) * 1992-05-26 1993-12-09 De La Rue Holographics Limited Holographic security device
US5694229A (en) * 1992-05-26 1997-12-02 De La Rue Holographics Limited Holographic security device
FR2719687A1 (en) * 1994-05-04 1995-11-10 Hologram Ind Sarl Method for marking products or documents, product thus marked and means for implementing the method and a device for verifying such a product or document.
WO1995030967A1 (en) * 1994-05-04 1995-11-16 Hologram Industries S.A.R.L. Method for marking articles or documents, resulting marked article, system for carrying out the method, and device for checking such an article or document
US6280891B2 (en) 1994-05-04 2001-08-28 Hologram Industries S.A. Multi-layer assembly and method for marking articles and resulting marked articles

Also Published As

Publication number Publication date
GB8307308D0 (en) 1983-04-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)