| CPC G07D 7/128 (2013.01) [B42D 25/00 (2014.10); B42D 25/21 (2014.10); B42D 25/29 (2014.10); B42D 25/30 (2014.10); B42D 25/324 (2014.10); B42D 25/342 (2014.10); B42D 25/351 (2014.10); B42D 25/355 (2014.10); B42D 25/373 (2014.10); B42D 25/378 (2014.10); B42D 25/425 (2014.10); B42D 25/435 (2014.10); B42D 25/445 (2014.10); B42D 25/45 (2014.10); G01N 21/4738 (2013.01); G01N 21/55 (2013.01); G02B 3/005 (2013.01); G02B 3/0056 (2013.01); G02B 5/0278 (2013.01); G02B 5/0284 (2013.01); B42D 25/23 (2014.10); B42D 25/24 (2014.10); B42D 25/28 (2014.10); B42D 25/328 (2014.10); G01N 2201/063 (2013.01)] | 20 Claims |
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1. An optical device comprising:
at least one array of lenses;
a plurality of first and second segments having a length extending along a first axis, the plurality of first and second segments disposed under the at least one array of lenses, the first segments corresponding to portions of a first icon and a first background, wherein upon tilting the first and second segments about the first axis at a first viewing angle, the at least one array of lenses presents the first icon for viewing, wherein upon tilting the first and second segments about the first axis at a second viewing angle different from the first viewing angle, the at least one array of lenses does not present the first icon for viewing; and
a plurality of third and fourth segments having a length extending along a second axis different from the first axis, the plurality of third and fourth segments disposed under the at least one array of lenses, the third segments corresponding to portions of a second icon and a second background, wherein upon tilting the third and fourth segments about the second axis at third viewing angle, the at least one array of lenses presents the second icon for viewing, wherein upon tilting the third and fourth segments about the second axis at a fourth viewing angle different from the third viewing angle, the at least one array of lenses does not present the second icon for viewing.
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