Security device

G - Physics – 06 – K

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G06K 19/08 (2006.01) G03H 1/28 (2006.01) G06K 19/16 (2006.01)

Patent

CA 2090436

2090436 9204692 PCTABS00011 A security device comprises first and second diffractive structures contained within a surface relief structure. The structures are such that the device responds to illumination (2) at a first, visible wavelength to generate a first, visible pattern while any pattern generated by the second structure is not substantially visible at that wavelength, and the device responds to illumination (12) at a second wavelength substantially different from the first wavelength to generate a second pattern suitable for machine reading while any pattern generated by the first structure is substantially suppressed relative to the machine readable pattern at that wavelength.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Security device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Security device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security device will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1964685

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.