Authentication medium, authenticable substate, authentication medium label, authentication medium transfer sheet, authenticable sheet, and authenticable information recording medium

Authentication medium, authenticable substate, authentication medium label, authentication medium transfer sheet, authenticable sheet, and authenticable information recording medium

  • CN 101,363,930 A
  • Filed: 04/11/2005
  • Published: 02/11/2009
  • Est. Priority Date: 04/14/2004
  • Status: Active Application
First Claim
Patent Images

1. be used to judge the medium of the true and false, it is characterized in that:

  • this medium is to select respectively closing layer by layer of reflection graphic patterns layer and optically diffractive structure layer to form by light, it is to have a layer that one of them light of left circularly polarized light in the reflection incident light or right-circularly polarized light is selected reflexive material that wherein said light is selected the reflection graphic patterns layer, by layer have or not or the thin and thick formation pattern of layer forms.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×