Aerosol-generating system and device having a waveguide arrangement for authenticating aerosol-generating articles
An aerosol-generating system comprises an aerosol-generating article having an indicium arranged on an outer surface thereof and an aerosol-generating device usable with the article. The aerosol-generating device includes a cavity, a heater, and an optical reader system. The cavity has an opening accessible at the outer body part and is configured to receive a consumable article comprising an indicium arranged on the article. The optical reader system includes at least one waveguide that has an incoupling surface, an outcoupling surface, and a detector. The waveguide is configured to illuminate the indicium in the cavity with a light beam and to transmit a reflected light beam provided by the indicium to the detector ( 30 ) of the optical reader system. A related method for authenticating a consumable article is also provided.
1 . An aerosol-generating system comprising:
an aerosol generating article extending along a longitudinal axis and comprising at least one indicium containing information about the article arranged on a surface thereof, and
an aerosol-generating device comprising:
a cavity having an opening configured to receive the aerosol generating article,
a heater arranged about the cavity to heat said aerosol generating article after insertion thereof in the cavity,
an optical reader system comprising at least one optical detector,
a power supply unit, and
a control unit configured to control at least the heater and the optical reader system,
wherein said optical reader system is configured to illuminate said indicium in said cavity with a light beam, said optical reader system including at least one waveguide having an incoupling surface and an outcoupling surface, said waveguide being configured to transmit at least a reflected light beam from said indicium to said outcoupling surface to outcouple said reflected light beam to said at least one optical detector, and
wherein said optical detector is located a distance away from the heater and is configured to be maintained at a temperature lower than 100° C. during operation of the heater.
2 . The aerosol-generating system according to claim 1 , wherein an incoupling structure is arranged at the incoupling surface.
3 . The aerosol-generating system according to claim 2 , wherein an outcoupling structure is arranged at the outcoupling surface.
4 . The aerosol-generating system according to claim 3 , wherein at least a portion of said incoupling structure and/or said outcoupling structure is selected from the group consisting of: a diffractive structure, a flat or curved wedged portion of the waveguide, an array of microprisms, a hologram layer, a metasurface, an electrostatic addressable micromirror or microshutter array, a lens, and a mirror.
5 . The aerosol-generating device system according to claim 4 , wherein said incoupling structure and/or said outcoupling structure is configured for focusing and/or deviating, in at least one plane, a light beam incident on said incoupling structure and/or said outcoupling structure.
6 . The aerosol-generating system according to claim 3 , wherein said incoupling structure and/or said outcoupling structure is an achromatic structure providing the same incoupling and outcoupling efficiency, respectively, and/or focusing in a spectral band of at least 50 nm.
7 . The aerosol-generating system according to claim 3 , wherein said incoupling structure and/or said outcoupling structure has a focal length equal or greater than a length of the waveguide.
8 . The aerosol-generating system according to claim 3 , wherein said incoupling structure and/or said outcoupling structure has a focal length smaller than a length of the waveguide, and wherein focusing structures are arranged on at least one side of the waveguide, said focusing structures being configured as relay structures to transmit an image from at least a portion of said indicium to the outcoupling surface or out of the waveguide to a distance from the output surface.
9 . The aerosol-generating system according to claim 1 , wherein said waveguide is an optical fiber or an optical fiber bundle.
10 . The aerosol-generating system according to according to claim 1 , wherein said waveguide is a flat optical waveguide.
11 . The aerosol-generating system according to claim 1 , wherein an optical focusing element is arranged between said cavity and said incoupling surface.
12 . The aerosol-generating system according to claim 11 , wherein said optical focusing element is monolithically integrated into or onto said waveguide.
13 . The aerosol-generating system according to claim 1 , wherein at least a portion of said waveguide is configured to transmit light, provided by an emitter, to said indicium.
14 . The aerosol-generating system according to claim 1 , wherein at least a portion of said waveguide is realized on at least one of surface of the heater.
15 . The aerosol-generating system according to claim 1 , wherein at least one optical filter is arranged between said outcoupling surface and said detector, and/or between said cavity and said incoupling surface.
16 . The aerosol-generating system according to claim 1 , wherein an optical spectrometer is arranged between said outcoupling surface and said detector.
17 . A method for authenticating a consumable article using the aerosol-generating system according to claim 1 , comprising the steps of:
inserting at least a portion of the aerosol generating article comprising the indicium in the cavity of the aerosol generating device,
illuminating the indicium on the surface of the aerosol generating article with the light beam and collecting the reflected light beam from the indicium through the waveguide and guiding said reflected light beam to the optical detector of the optical reader system,
authenticating the aerosol generating article, via the control unit, by computing information contained in the reflected light impinging on the optical detector.
18 . The method according to claim 17 , further comprising a step of commanding the heater with the control unit based on the information computed in the authentication step.
19 . An aerosol-generating system comprising:
an aerosol generating article extending along a longitudinal axis and comprising at least one indicium containing information about the article arranged on a surface thereof, and
an aerosol-generating device comprising:
a cavity having an opening configured to receive the aerosol generating article,
a heater arranged about the cavity to heat said aerosol generating article after insertion thereof in the cavity,
an optical reader system comprising at least one optical detector,
a power supply unit, and
a control unit configured to control at least the heater and the optical reader system,
wherein said optical reader system is configured to illuminate said indicium in said cavity with a light beam, said optical reader system including at least one waveguide having an incoupling surface and an outcoupling surface, said waveguide being configured to transmit at least a reflected light beam from said indicium to said outcoupling surface to outcouple said reflected light beam to said at least one optical detector, and
wherein a portion of the waveguide has stable optical properties up to about 300° C.
20 . An aerosol-generating system comprising:
an aerosol generating article extending along a longitudinal axis and comprising at least one indicium containing information about the article arranged on a surface thereof, and
an aerosol-generating device comprising:
a cavity having an opening configured to receive the aerosol generating article,
a heater arranged about the cavity to heat said aerosol generating article after insertion thereof in the cavity,
an optical reader system comprising at least one optical detector,
a power supply unit, and
a control unit configured to control at least the heater and the optical reader system,
wherein said optical reader system is configured to illuminate said indicium in said cavity with a light beam, said optical reader system including at least one waveguide having an incoupling surface and an outcoupling surface, said waveguide being configured to transmit at least a reflected light beam from said indicium to said outcoupling surface to outcouple said reflected light beam to said at least one optical detector, and
wherein said waveguide has a flexible portion.