Designing a Passive Lidar Detector Device(www.atredis.com)
82 pointsby speckx2 months ago5 comments
  • MezzoDelCammin2 months ago
    I admit it's a nice experiment, but I guess the title should be "detecting iPhone Lidar".

    Both the 60Hz frequency and 940nm wavelength are fairly specific. There's a whole world of different wavelengths (1550nm is fairly common) and frequencies (up to 1MHz isn't particularly exceptional).

    There's been a whole thread on the topic here:

    https://news.ycombinator.com/item?id=46110395

    • aidenn02 months ago
      Right, I wonder if they considered a pulse-detector with a dichroic filter and a 555?
    • MPSimmons2 months ago
      Agreed, I immediately thought of vehicles, but this is cool too.
  • 2 months ago
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  • vzaliva2 months ago
    If you are sensitive to flashing - do not try to open this link. It is impossible to read because of videos of flashing lights.
    • elric2 months ago
      Makes me wonder about how safe lidar is for humam and animal eyeballs?
      • garbagewoman2 months ago
        The videos are of invisible wavelengths of light transformed into visible light. Why does that make you ponder the safety of the infrared light?
      • estimator72922 months ago
        I have some very bad news for you about the kinds of light emitted by the sun and also your oven
    • BrianGragg2 months ago
      Reader view ftw!
  • 486sx332 months ago
    [dead]
  • _jzlw2 months ago
    [flagged]