Title:
無作為に配向した部分面を有する光識別子
Document Type and Number:
Japanese Patent JP2008524689
Kind Code:
A
Abstract:
The invention relates to an optical identifier (30) for generating an identification signal in response to an incident radiation beam (12), and to a corresponding method. In order to provide an optical identifier (30) which can be produced by a simplified process and which has nevertheless a sufficient or even improved stability against environmental interferences it is proposed that said identifier comprises a carrier layer (32), at least partially transparent to said radiation beam (12), having a first scattering face (34) comprising a plurality of randomly oriented partial faces for scattering at least a part of said radiation beam (12), wherein said identification signal is formed by a scattered part of said radiation beam (12). Further, a device comprising said identifier, and a reading apparatus for identifying the identifier are proposed.
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Inventors:
Ofei, Will
Tuils, Pimtay
Scoric, borris
Akermans, Antonius Haem
Tuils, Pimtay
Scoric, borris
Akermans, Antonius Haem
Application Number:
JP2007546262A
Publication Date:
July 10, 2008
Filing Date:
December 12, 2005
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G06K19/10; B42D15/10; G06K7/12; G06K17/00
Domestic Patent References:
| JP2003531404A | 2003-10-21 | |||
| JPH10287075A | 1998-10-27 | |||
| JP2004171109A | 2004-06-17 | |||
| JPH0740691A | 1995-02-10 | |||
| JP2003262724A | 2003-09-19 | |||
| JPH10214020A | 1998-08-11 | |||
| JPH0761178A | 1995-03-07 |
Foreign References:
| US6584214B1 | 2003-06-24 | |||
| WO2004097730A1 | 2004-11-11 |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito