Image-formed object and method for producing the same

Details Image-formed object and method for producing the same Image-formed object and method for producing the same

2009-03-31

2010-06-01

Amari, Alessandro (Department: 2872)

Optical: systems and elements

Holographic system or element

Authentication

C359S900000

Reexamination Certificate

active

07729027

ABSTRACT:
The present invention provides an image-formed object having security property improved, in which, even in the case where the image-formed object comprises a plurality of optical diffraction structures, the presence of each optical diffraction structure is hardly recognized.An image-formed object comprises a background region where an optical diffraction structure for background focusing a predetermined design as a hologram image at a predetermined image-formation distance, and at least one inset region provided so as to be inset in the background region, wherein, in the inset region, an optical diffraction structure for inset focusing a hologram image of the same design and color as the hologram image of the optical diffraction structure for background is formed at an image-formation distance different from the image-formation distance of the optical diffraction structure for background.

REFERENCES:
patent: 4629282 (1986-12-01), McGrew
patent: 4717221 (1988-01-01), McGrew
patent: 2004/0196516 (2004-10-01), Petersen et al.

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