MXPA01012464A - Security device. - Google Patents

Security device.

Info

Publication number
MXPA01012464A
MXPA01012464A MXPA01012464A MXPA01012464A MXPA01012464A MX PA01012464 A MXPA01012464 A MX PA01012464A MX PA01012464 A MXPA01012464 A MX PA01012464A MX PA01012464 A MXPA01012464 A MX PA01012464A MX PA01012464 A MXPA01012464 A MX PA01012464A
Authority
MX
Mexico
Prior art keywords
plane
sections
covert images
image
response
Prior art date
Application number
MXPA01012464A
Other languages
Spanish (es)
Inventor
Brian William Holmes
Kenneth John Drinkwater
Original Assignee
Rue De Int Ltd
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 Rue De Int Ltd filed Critical Rue De Int Ltd
Priority claimed from PCT/GB2000/002081 external-priority patent/WO2000073991A1/en
Publication of MXPA01012464A publication Critical patent/MXPA01012464A/en

Links

Landscapes

  • Holo Graphy (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

A security device comprises a holographic optically variable effect generating structure (1) having at least two discrete sections (2). The sections (2) generate in response to white light illumination (51) an optically variable image (3-5) consisting of at least two defined graphical elements located at or near an image plane either on or adjacent to the plane of the device. In response to coherent illumination (6), the sections generate at least two discrete covert images (7-9), in the form of indicia, whose image planes are located at a distance away from the real plane of the device. The covert images (7-9) are reconstructed at different angles to a normal to a substrate (1) supporting the device such that the covert images are spatially separated on their image plane, the covert images being non-visible under white light illumination.
MXPA01012464A 1999-06-01 2000-05-30 Security device. MXPA01012464A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9912723.5A GB9912723D0 (en) 1999-06-01 1999-06-01 Security device
GBGB9913768.9A GB9913768D0 (en) 1999-06-01 1999-06-14 Security device
PCT/GB2000/002081 WO2000073991A1 (en) 1999-06-01 2000-05-30 Security device

Publications (1)

Publication Number Publication Date
MXPA01012464A true MXPA01012464A (en) 2007-05-18

Family

ID=10854540

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA01012464A MXPA01012464A (en) 1999-06-01 2000-05-30 Security device.

Country Status (5)

Country Link
CO (1) CO5290268A1 (en)
GB (2) GB9912723D0 (en)
MX (1) MXPA01012464A (en)
RU (1) RU2224289C2 (en)
ZA (1) ZA200109698B (en)

Also Published As

Publication number Publication date
RU2224289C2 (en) 2004-02-20
GB9913768D0 (en) 1999-08-11
CO5290268A1 (en) 2003-06-27
GB9912723D0 (en) 1999-08-04
ZA200109698B (en) 2002-11-26

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Legal Events

Date Code Title Description
FA Abandonment or withdrawal