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

• US 20090212953A1
• Filed: 01/12/2009
• Published: 08/27/2009
• Est. Priority Date: 07/11/2006
• Status: Active Grant

• Current Assignee: Carl Zeiss Vision GMBH (Carl-Zeiss-Stiftung)
• Original Assignee: Carl Zeiss Vision GMBH (Carl-Zeiss-Stiftung)
• Inventors: Ross-Messemer, Martin
• Granted Patent: US 8,519,849 B2
• Time in Patent Office: Days
• US Class Current: 340/572.700
• 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 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 RFID-transponder comprising an antenna configured to be optically transparent.

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

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

4. The RFID-transponder of claim 2, wherein said coating can be applied lithographically.

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

6. The RFID-transponder of claim 2, wherein said coating comprises a transparent conductive oxide (TCO).

7. The RFID-transponder of claim 5, wherein said coating is a transparent conductive oxide (TCO).

8. The RFID-transponder of claim 6, 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);

(CuAlO₂); and

, silver antimony oxide (AgSbO₃).

9. A device comprising:

a body defining an optical surface whereon at least one of the following is pertinent;

an optical appearance;

an optical function; and

, an optical characteristic;

an RFID-transponder being arranged on said optical surface; and

,

said RFID-transponder including an antenna configured to be optically transparent.

10. The device of claim 9, 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.

11. The device of claim 9, wherein said body is one of the following:

a planar-parallel glass plate;

a lens;

or, a mirror.

12. The device of claim 9, wherein said device is one of the following:

a magnifier;

a camera objective;

spectacles;

an object carrier;

or, a head mounted display.

13. A method for making an antenna for an RFID-transponder 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.

14. An antenna for an RFID-transponder, the antenna comprising an optically transparent coating.

15. The antenna of claim 14, wherein said coating is electrically conductive.

16. The antenna of claim 15, wherein said coating is an electrically conducting insulator or a semiconductor in dependence upon a doping thereof.

17. The antenna of claim 15, wherein said coating comprises a transparent conductive oxide (TCO).

18. The antenna of claim 17, wherein said coating is a transparent conductive oxide (TCO).

19. The antenna of claim 17, 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);

(CuAlO₂); and

, silver antimony oxide (AgSbO₃).