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Are there any 'industrial' applications for the printed holograms? I'm thinking of these as a type of metamaterial and wondering if this provides some type of

by jcims 6y ago

Are there any 'industrial' applications for the printed holograms? I'm thinking of these as a type of metamaterial and wondering if this provides some type of novel filtering and/or polarizing capability that doesn't exist today. Also given how this is constructed it seems like it might be possible to create holographic geometries that aren't possible with the traditional method of creating them.

Const-me 6y ago
It depends on resolution of the printer and other specs, but potentially, this might help with R&D in areas like this: https://en.wikipedia.org/wiki/Photonic_metamaterial https://en.wikipedia.org/wiki/Photonic_metamaterial
- hologram-paul 6y ago
  Definitely could be part of R&D for novel holographic optical elements for VR and AR headsets, and even solar cells and how they more efficiently use light to create electricity.
hologram-paul 6y ago
One of the big industrial applications is for Holographic Optical Elements (HOE). Holograms can direct light like a mirrors, color filters, or act as several optical lenses combined into one thin holographic version.
- TheRealSteel 6y ago
  That's really interesting! I don't know anything about holograms, or about optics (I'm currently implementing code that takes advantage of OpenCV's camera calibration and don't even know some of the basics). But I've read recently that some companies are trying to make better cameras (for phones etc) by making a meta-lens -- a single, flat lens with a highly detailed surface that can do the job that currently requires multiple curved lenses. Do holograms have anything in common with surfaces like that? If HOEs can direct light like several optical lenses combined into one, with a reflective enough surface, could holograms theoretically be used as some type of reflective (rather than refractive) lens like that for a smartphone (etc) camera? Can they reflect all wavelengths of visible light like you would need? Is anyone doing work in this area now? There are even periscopic cameras in phones today - could we one day have a high quality camera in a slim device with one or two reflective lenses and no refractive element at all? What's the difference like between something like LitiHolo and a machine required to make an HOE? What are the main relevant spec measures? I'm not sure if holograms have some equivalent of resolution, or similar.
  - hologram-paul 6y ago
    Holographic Optical Elements certainly have potential for applications like this, and the 3D Hologram Printer could be a great tool for simple prototyping and quick iterative testing. Recently, Maimone et al at Oculus/Facebook Reality Labs used our hologram film to make a design for a thinner VR headset using pancake lenses incorporating holograms: https://research.fb.com/wp-content/uploads/2020/06/Holographic-Optics-for-Thin-and-Lightweight-Virtual-Reality.pdf https://research.fb.com/wp-content/uploads/2020/06/Holograph...
    - TheRealSteel 6y ago
      Interesting! One of my first thoughts was use in an AR headset, which has a particular use-case for a reflective, rather than refractive, lens.
      - hologram-paul 6y ago
        Yes, there are definite applications for Holographic Optical Elements in this area. We are hoping that access to a 3D Hologram Printer will make development in this area even more accelerated. Thanks.

by jcims 6y ago

Const-me 6y ago

It depends on resolution of the printer and other specs, but potentially, this might help with R&D in areas like this: https://en.wikipedia.org/wiki/Photonic_metamaterial https://en.wikipedia.org/wiki/Photonic_metamaterial

hologram-paul 6y ago
Definitely could be part of R&D for novel holographic optical elements for VR and AR headsets, and even solar cells and how they more efficiently use light to create electricity.

hologram-paul 6y ago

One of the big industrial applications is for Holographic Optical Elements (HOE). Holograms can direct light like a mirrors, color filters, or act as several optical lenses combined into one thin holographic version.

TheRealSteel 6y ago
That's really interesting! I don't know anything about holograms, or about optics (I'm currently implementing code that takes advantage of OpenCV's camera calibration and don't even know some of the basics). But I've read recently that some companies are trying to make better cameras (for phones etc) by making a meta-lens -- a single, flat lens with a highly detailed surface that can do the job that currently requires multiple curved lenses. Do holograms have anything in common with surfaces like that? If HOEs can direct light like several optical lenses combined into one, with a reflective enough surface, could holograms theoretically be used as some type of reflective (rather than refractive) lens like that for a smartphone (etc) camera? Can they reflect all wavelengths of visible light like you would need? Is anyone doing work in this area now? There are even periscopic cameras in phones today - could we one day have a high quality camera in a slim device with one or two reflective lenses and no refractive element at all? What's the difference like between something like LitiHolo and a machine required to make an HOE? What are the main relevant spec measures? I'm not sure if holograms have some equivalent of resolution, or similar.
- hologram-paul 6y ago
  Holographic Optical Elements certainly have potential for applications like this, and the 3D Hologram Printer could be a great tool for simple prototyping and quick iterative testing. Recently, Maimone et al at Oculus/Facebook Reality Labs used our hologram film to make a design for a thinner VR headset using pancake lenses incorporating holograms: https://research.fb.com/wp-content/uploads/2020/06/Holographic-Optics-for-Thin-and-Lightweight-Virtual-Reality.pdf https://research.fb.com/wp-content/uploads/2020/06/Holograph...
  - TheRealSteel 6y ago
    Interesting! One of my first thoughts was use in an AR headset, which has a particular use-case for a reflective, rather than refractive, lens.
    - hologram-paul 6y ago
      Yes, there are definite applications for Holographic Optical Elements in this area. We are hoping that access to a 3D Hologram Printer will make development in this area even more accelerated. Thanks.