Multilayer element comprising microlenses

Details Multilayer element comprising microlenses Multilayer element comprising microlenses

2007-06-23

2010-10-05

Choi, William C (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

C359S620000

Reexamination Certificate

active

07808710

ABSTRACT:
Described is a multilayer body for representing microimages provided with gray value gradations or color gradations. The multilayer body has a transparent first layer in which a plurality of microlenses are shaped, and a second layer (61) which is arranged beneath the first layer and has a plurality of microimages. The microlenses are arranged in accordance with a microlens raster. The second layer has a plurality of microimage regions (61b) arranged in accordance with a microimage region raster whose raster width is <300 μm. Within each microimage region two or more of the microimages (61mathrough61mc) arranged in a microimage raster respectively differ from each other, wherein the raster spacings of the microlens raster and the microimage raster differ from each other by less than 10%. The microimages have regions with a gray value or a color value. Also disclosed is a process for the production of the multilayer body.

REFERENCES:
patent: 5712731 (1998-01-01), Drinkwater et al.
patent: 7333268 (2008-02-01), Steenblik et al.
patent: 2008/0160226 (2008-07-01), Kaule et al.
patent: 102005028162 (2006-12-01), None
patent: WO 01/39138 (2001-05-01), None
patent: WO 2005/052650 (2005-06-01), None
patent: WO 2005/106601 (2005-11-01), None

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