US 9,429,762 B2Granted

Security device

AssigneeDe La Rue International Limited

InventorsBrian William Holmes, Lawrence George Commander

Life of this patent

Estimating the term…

Loading patent…

Abstract

A lenticular device includes an array of lenticular focusing elements located over a corresponding array of pairs of image strips such that, in a first viewing direction, a first image strip from each pair is viewed by respective ones of the lenticular focusing elements and, in a second viewing direction, different from the first, a second image strip from each pair is viewed by respective ones of the lenticular focusing elements, One of each pair of image strips has portions defining a first image in a first color and a second image in a second color respectively, and the other of each pair of image strips has portions defining the first image in the second color and the second image in the first color respectively, whereby on tilting the device, a color switch is observed between the first and second images.

Claims48

Dependent claims

A security device having a lenticular device, comprising:

a first image strip pair having a first and second image strip;
a second image strip pair having a third and fourth image strip;
a first portion of a first image in a first colour and a first portion of a second image in a second colour located in the first image strip;
a second portion of the first image in the first colour and a second portion of the second image in the second colour located in the third image strip;
a first portion of the first image in the second colour and a first portion of the second image in the first colour located in the second image strip;
a second portion of the first image in the second colour and a second portion of the second image in the first colour located in the fourth image strip;
a first lenticular focusing element located over the first image strip pair;
a second lenticular focusing element located over the second image strip pair;
wherein:
the first and third image strips are different from each other;
the second and fourth image strips are different from each other;
in a first viewing direction, the first and third image strips are viewed by the first and second lenticular focusing elements, the first image is viewed in the first colour, and the second image is viewed in the second colour;
and
in a second viewing direction, the second and fourth image strips are viewed by the first and second lenticular focusing elements, the first image is viewed in the second colour, and the second image is viewed in the first colour.

11 more elements

A security device having a lenticular device, comprising:

a first strip pair having a first and. second strip;
a second strip pair having a third and fourth strip;
a first portion of an opaque version of a first image and a first portion of a transparent version of a second image located in the first strip;
a second portion of the opaque version of the first image and a second portion of the transparent version of the second image located in the third strip;
a first portion of a transparent version of the first image and a first portion of an opaque version of the second image located in the second strip;
a second portion of the transparent version of the first image and a second portion of the opaque version of the second image located in the fourth strip;
a first lenticular focusing element located over the first strip pair;
a second lenticular focusing element located over the second strip pair;
wherein:
the first and third strips are different from each other;
the second and fourth strips are different from each other;
in a first viewing direction, the first and third strips are viewed by the first and second lenticular focusing elements, the first image is opaque, and the second image is transparent:
and
in a second viewing direction, the second and fourth strips are viewed by the first and second lenticular focusing elements, the first image is transparent, and the second image is opaque.

11 more elements

A method of manufacturing a security device, the method comprising providing a first and second lenticular focusing element on one side of a transparent substrate;

and providing a first and second pair of image strips on the other side of the transparent substrate, the image strips and lenticular focusing elements defining a lenticular device, comprising:
the first image strip pair having a first and second image strip;
the second image strip pair having a third and fourth image strip;
a first portion of a first image in a first colour and a first portion of a second image in a second colour located in the first image strip;
a second portion of the first image in the first colour and a second portion of the second image in the second colour located in the third image strip;
a first portion of the first image in the second colour and a first portion of the second image in the first colour located in the second image strip;
a second portion of the first image in the second colour and a second portion of the second image in the first colour located in the fourth image strip;
the first lenticular focusing element located over the first image strip pair;
the second lenticular focusing element located over the second image strip pair;
wherein:
the first and third image strips are different from each other;
the second and fourth image strips are different from each other;
in a first viewing direction, the first and third image strips are viewed by the first and second lenticular focusing elements, the first image is viewed in the first colour, and the second image is viewed in the second colour;
and
in a second viewing direction, the second and fourth image strips are viewed by the first and second lenticular focusing elements, the first image is viewed in the second colour, and the second image is viewed in the first colour.

12 more elements

A method of manufacturing a security device, the method comprising providing a first and second lenticular focusing element on one side of a transparent substrate;

and providing a first and second pair of strips on the other side of the transparent substrate, the strips and lenticular focusing elements defining a lenticular device, comprising:
the first pair having a first and second strip;
the second strip pair having a third and fourth strip;
a first portion of an opaque version of a first image and a first portion of a transparent version of the second image located in the first strip;
a second portion of the opaque version of the first image and a second portion of the transparent version of the second image located in the third strip;
a first portion of a transparent version of the first image and a first portion of an opaque version of the second image located in the second strip;
a second portion of the transparent version of the first image and a second portion of the opaque version of the second image located in the fourth strip;
a first lenticular focusing element located over the first strip pair;
a second lenticular focusing element located over the second strip pair;
wherein:
the first and third strips are different from each other;
the second and fourth strips are different from each other;
in a first viewing direction, the first and third strips are viewed by the first and second lenticular focusing elements, the first image is opaque, and the second image is transparent;
and
in a second viewing direction, the second and fourth strips are viewed by the first and second lenticular focusing elements, the first image is transparent, and the second image is opaque.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/500,495Filed 27 Oct 2010 · us provisional application
Priority: GB 0919112.330 Oct 2009
Published: US 2012/0268598 A125 Oct 2012
Granted: 30 Aug 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

G02B 30/27
Of the autostereoscopic type: involving lenticular arrays
B42D 25/21
Characterised by a particular use or purpose: for multiple purposes
B42D 25/29
Characterised by a particular use or purpose: securities; Bank notes
B42D 25/324
Identification or security features, e.g. for preventing forgery: reliefs