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US-20260126563-A1 - OPTICAL FILTER BASED ON LIGHT-MATTER COUPLING IN QUANTUM-CONFINED CAVITY SPACES

US20260126563A1US 20260126563 A1US20260126563 A1US 20260126563A1US-20260126563-A1

Abstract

An optical filter may include a layer structure comprising a plurality of layers stacked in a thickness direction of the layer structure and including: a plurality of nano-photonic layers formed of a nano-photonic material with icosahedral or dodecahedral symmetry, and at least one substrate layer formed of an optically transparent material, wherein one of the at least one substrate layer is positioned between two of the plurality nano-photonic layers in the thickness direction of the layer structure.

Inventors

  • Djuro Koruga

Assignees

  • Fieldpiont (Cyprus) Limited

Dates

Publication Date
20260507
Application Date
20250807

Claims (20)

  1. 1 . An optical filter based on light-matter coupling in quantum-confined cavity spaces comprising a layer structure comprising a plurality of layers stacked in a thickness direction of the layer structure and including: a plurality of nano-photonic layers formed of a nano-photonic material with icosahedral or dodecahedral symmetry, and at least one substrate layer formed of an optically transparent material, wherein one of the at least one substrate layer is positioned between two of the plurality nano-photonic layers in the thickness direction of the layer structure and its thickness I satisfies the following condition: λ 2 ⁢ π ⁢ l > 1 , wherein λ is a wavelength of visible incident light.
  2. 2 . The optical filter of claim 1 , wherein the nano-photonic material comprises fullerene molecules.
  3. 3 . The optical filter of claim 2 , wherein the nano-photonic material comprises C 60 fullerene molecules.
  4. 4 . The optical filter of claim 1 , wherein the at least one substrate has a thickness in a range from 5-30 nm.
  5. 5 . The optical filter of claim 1 , wherein at least one of the plurality of nano-photonic layers has a thickness in a range from 3-10 nm.
  6. 6 . The optical filter of claim 1 , wherein the at least one substrate layer is free of nano-photonic material.
  7. 7 . The optical filter of claim 1 , wherein at least one of the plurality of nano-photonic layers is free of the optically transparent material of the at least one substrate layer.
  8. 8 . The optical filter of claim 1 , wherein the layer structure includes a plurality of substrate layers.
  9. 9 . The optical filter of claim 8 , wherein the plurality of substrate layers and the plurality of nano-photonic layers are alternately arranged in the thickness direction of the layer structure.
  10. 10 . The optical filter of claim 8 , wherein at least two of the plurality of substrate layers have mutually different refractive indices.
  11. 11 . The optical filter of claim 8 , wherein at least two of the plurality of substrate layers have mutually different dimensions in the thickness direction of the layer structure.
  12. 12 . The optical filter of claim 1 , further comprising a carrier supporting the layer structure.
  13. 13 . The optical filter of claim 12 , wherein the carrier is made of an optically transparent material and is configured as a carrier layer stacked on the layer structure.
  14. 14 . The optical filter of claim 13 , wherein the carrier is configured as a lens.
  15. 15 . The optical filter of claim 13 , wherein the carrier includes nano-photonic material.
  16. 16 . Spectacles comprising an optical filter of claim 1 .
  17. 17 . A therapeutic lamp, comprising a light source and an optical filter of claim 1 .
  18. 18 . The therapeutic lamp of claim 17 , further comprising a polarizer positioned on a light path between the light source and the optical filter and configured to polarize light emitted by the light source.
  19. 19 . The therapeutic lamp of claim 18 , wherein the polarizer is configured as a linear polarizer configured to convert incident light into linearly polarized light.
  20. 20 . The therapeutic lamp of claim 19 , wherein the polarizer comprises or is configured as a Brewster polarizer.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. patent application Ser. No. 17/595,615, filed on Nov. 19, 2021, which is a US National Stage entry of International Application PCT/EP2019/065365, filed on Jun. 12, 2019; the above applications are incorporated by reference in their entirety. TECHNICAL FIELD Various embodiments relate generally to optical filters as well as to spectacles and hyperlight devices including optical filters. Further embodiments relate to optical lenses, room lighting means, street lighting means, laptop foils, mobile phones, vehicle glazing (cars and trucks), aircraft glazing, windows in general such as building windows, and toys, respectively including optical filters. BACKGROUND Light therapy has gained significant importance in the past few years, in particular in the therapy of—but not limited to—skin diseases. In this field, it is generally recognized that the therapeutic effect is closely related to the characteristics of the light used for therapy including not only the wavelength range of the light but also characteristics related to the spatial distribution of the photons depending on, e.g. the angular momentum. The influence on the therapeutic effect of these characteristics has become the subject of intense research in the past years. Examples of developments in this field are disclosed inter alia in US 2008/286453 A1 and WO 2017/211420 A1. Further aspects related to the present disclosure can be found in: U.S. Pat. No. 5,640,705; Andreani, C. L, “Exciton-Polaritons in Bulk Semiconductors and in Confined Electron and Photon Systems”, p. 37-82, 2014 in book Eds. Auffeves. A et al, “Strong Light-matter coupling: From atoms to solid-state systems”, Word Scientific, ISBN 978-981-4460-34-7; Carusotto, I. and Ciuti, C., “Quantum fluids of light”, arXiv: 1205.6500v3, 17 Oct. 2012; Castelletto, S, at al.: “A silicon carbide room temperature single-photon source”, Nature Materials, 13, 151-156, 2014; Del Negro, et. al. “Light transport trough the band-edge states of Fibonacci quasicrystals, Physical Review Letters, 90 (5): 055501 Jan. 4, 2003; Kavokin, A. V. et al., “Microcavities”, Oxford University Press, Oxford, 2017; Lounis, B., and Moerner, W. E. “Single potons on demand from a single molecule at room temperature”, Nature, 407:491-493, 2000; Koruga, Dj., “Hyperpolarized light”: Fundamentals of nanobiomedical photonics”, Zepter Book World, Belgrade 2018; Michler, P., et al., “Quantum correlation among photons from a single quantum dot at room temperature”, Nature, 406:968-970, 2000; Moradi A., “Electromagnetic wave propagation in a random distribution of C60 molecules”, Physics of Plasmas 21,104508, 2014; WO 9604958 A1; and WO 9604959 A1. The efficient conversion of light emitted by conventional light sources employed for light therapy into light with predetermined characteristics such as a predetermined spatial distribution of the photons depending on their angular momenta is of huge importance for a highly efficient light therapy. SUMMARY According to the present invention, an optical filter is provided. The optical filter may include a layer structure comprising a plurality of layers stacked in a thickness direction of the layer structure and including: a plurality of nano-photonic layers formed of a nano-photonic material with icosahedral or dodecahedral symmetry, and at least one substrate layer formed of an optically transparent material, wherein the at least one substrate layer is positioned between two of the plurality nano-photonic layers in the thickness direction of the layer structure. BRIEF DESCRIPTION OF THE DRAWINGS In the drawings, like reference characters generally refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the invention. In the following description, various embodiments of the invention will be described with reference to the following drawings, in which: FIG. 1 is a schematic drawing illustrating the main characteristics of hyperlight; FIG. 2 shows three rotational states of a C60 molecule; FIG. 3 schematically illustrates different interaction mechanisms of light with a C60 molecule as a 0D cavity; FIG. 4a is a graph showing the power spectra of a photon, of an exciton, and of a polariton as a function of an effective coupling strength; FIG. 4b is a graph showing the power spectra of a photon, of an exciton, and of polaritons as a function of momentum; FIG. 5 is a schematic drawing illustrating an optical filter according to an exemplary embodiment of the present disclosure; FIG. 6 illustrates the influence of a 2D cavity according to the present disclosure on the polarization states of incident light on the basis of a Poincaré sphere; FIG. 7 is a schematic drawing illustrating an optical filter according to another exemplary embodiment of the present disclosure; FIG. 8 is a schematic drawin