RFID-transponder and device having an RFID-transponder as well as a method of making an antenna for an RFID-transponder

• US 8,519,849 B2
• Filed: 01/12/2009
• Issued: 08/27/2013
• Est. Priority Date: 07/11/2006
• Status: Expired due to Fees

• Current Assignee: Carl Zeiss Vision GMBH (Carl-Zeiss-Stiftung)
• Original Assignee: Carl Zeiss Vision GMBH (Carl-Zeiss-Stiftung)
• Inventors: Ross-Messemer, Martin
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US12/318,875
• Publication Number:
  US 20090212953A1
• Time in Patent Office: 1,688 Days
• Field of Search: 340/572.1, 340/572.5, 340/572.7, 340/572.8, 340/572.9, 340/571, 340/539.1, 340/539.11, 340/573.1, 340/573.11, 340/10.1, 235/491, 235/492, 235/375, 235/380, 235/487, 252/500, 252/511, 252/512, 438/795, 349/152, 349204-206
• US Class Current: 340/572.7
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02C 7/02 Lenses; Lens systems ; Methods of designing lenses
• CPC Class Codes: G06K 19/07749 the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
• CPC Class Codes: G06K 19/07762 the adhering arrangement making the record carrier wearable, e.g. having the form of a ring, watch, glove or bracelet record carriers for insertion in the human body for medical purposes A61B90/00; record carriers adapted for attachment to animals A01K11/00
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 1/273 Adaptation for carrying or wearing by persons or animals
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Abstract

The invention relates to an RFID-transponder, an optical element (150) with an RFID-transponder and an antenna (110) for an RFID-transponder. According to the invention, the antenna (110) is constructed to be optically transparent. The invention additionally relates to a method for producing an antenna (110) for an RFID-transponder. The inventive method for producing an antenna (110) of an RFID-transponder is characterized by the following method steps: a) providing an object (150) having a surface to be equipped with the RFID-transponder, b) application of a transparent conductive coating to the surface, c) lithographic structuring of the transparent conductive coating in order to form the antenna (110).

Claims

1. An article comprising:

a body defining an optical surface for performing an optical function or having an optical characteristic;

an RFID-transponder having an antenna arranged on said optical surface;

said antenna being optically transparent for visible light and being configured so as to be invisible to a user of the article; and

,

said body being a lens or a mirror.

2. The article of claim 1, wherein said antenna comprises a transparent, electrically conductive, coating.

3. The article of claim 2, wherein said antenna is a transparent, electrically conductive coating.

4. The article of claim 2, wherein said coating can be applied lithographically.

5. The article of claim 2, wherein said coating is an electrically conducting insulator or a semiconductor in dependence upon a doping thereof.

6. The article of claim 5, wherein said coating is a transparent conductive oxide (TCO).

7. The article of claim 2, wherein said coating comprises a transparent conductive oxide (TCO).

8. The article of claim 7, wherein said transparent conductive oxide (TCO) comprises at least one of the following:

tin oxide (SnO;

F;

FTO, SnO;

Sb;

ATO);

indium tin oxide (In₂O₃;

Sn;

ITO);

zinc oxide (Zno;

Al;

AZO);

cadmium stannate (Cd₂SnO₄, Cd₂SnO₃;

CTO);

cadmium oxide (Cdo);

cadmium indium oxide (CdInO₂);

copper aluminum oxide (CuAlO₂); and

, silver antimony oxide (AgSbO₃).

9. The article of claim 8, wherein said optical characteristic is at least one of the following:

absorption capacity;

transparency;

reflection capacity;

refraction behavior; and

, diffraction behavior of an incident ray in a predetermined spectral range.

10. The article of claim 1, wherein said article is one of the following:

a magnifier;

a camera objective;

spectacles;

an object carrier;

or, a head mounted display.

11. A method for making an antenna of an RFID-transponder on the optical surface of an article, the method comprising the steps of:

providing an item to be provided with said RFID-transponder and said item having a surface;

applying a transparent, conductive coating to said surface; and

,

lithographically structuring said transparent, conductive coating to the shape of said antenna configured to be optically transparent for visible light and to be invisible to a user of the article; and

,

wherein said surface is defined by lens or a mirror.

12. An optical device comprising:

a lens or mirror for performing an optical function and defining an optical surface;

an RFID-transponder;

an antenna having a predetermined shape and being connected to said transponder; and

,

said antenna being configured as a lithographically structured transparent conductive coating applied to said optical surface to have said shape and be optically transparent for visible light and to be invisible to a user of the optical device.

13. An optical device comprising;

a lens or mirror for performing an optical function and defining an optical surface;

an RFID-transponder;

an antenna having a predetermined shape and being connected to said transponder;

said antenna being configured as a lithographically structured transparent conductive coating applied to said optical surface to have said shape and being configured so as to be invisible to a user of the optical device; and

said coating being a transparent conductive oxide (TCO).