Security Holograms

A method of recording a holographic image onto holographic recording film, said holographic image comprising a hologram of a three-dimensional (3D) object in conjunction with a multi-channel holographic image, the method comprising:

• forming a holographic recording stack by:
• positioning said holographic recording film over a multichannel image generation device;
• positioning at least one three-dimensional (3D) object or hologram of a 3D object under said multichannel image generation device;
• and
• providing a transparent window in said multichannel image generation device in a region above said at least one object;
• and then recording said holographic image in said holographic recording film by illuminating said stack through said holographic recording film with a laser light of at least one wavelength.

A structure for recording a security hologram in holographic recording film, said holographic image comprising a hologram of a three-dimensional (3D) object in conjunction with a multi-channel holographic image, said structure forming a stack comprising:

• said holographic recording film;
• a multichannel image generation device under said holographic recording film;
• at least one 3D object or hologram of a 3D object under said multichannel image generation device;
• and
• wherein at least a portion of said multichannel image generation device is substantially transparent or absent in a region above said at least one object.