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Saturday, March 28, 2020

TechInsights Finds Sony ToF Sensor Inside iPad Pro LiDAR, iFixit Tests LiDAR Operation

TechInsights twits first info from Apple iPad Pro 2020 teardown, saying that LiDAR sensor is made by Sony.

Update: TechInsights fixed a typo in the original twit. The spatial resolution is 0.03MP, 10x lower than initially reported.

"TechInsights has begun the teardown process of #Apple iPad Pro (Model A2068). Our early findings indicate a 4.18 mm x 4.30 mm (18.0 mm²) #Sony ToF sensor with 0.03 MP resolution & 10 µm pitch pixels within the #LiDAR system. Our analysis continues with in-depth reports to follow."


iFixIt publishes a teardown video showing that LiDAR IR illumination pattern is less dense than a FaceID one:


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16 comments:

  1. AnonymousMarch 28, 2020 at 6:52 PM

    Is the pattern static? Terrible resolution.
    High fps sensor and tablet motion can improve that, but still surprising.

    ReplyDelete
    Replies
    1. Vladimir KoifmanMarch 28, 2020 at 7:05 PM

      It appears static from the video.

      Delete
    2. MPMarch 28, 2020 at 7:28 PM

      The only way to avoid multi path error in tof is by projecting modulated sparse rays.

      Delete
    3. Vladimir KoifmanMarch 28, 2020 at 7:39 PM

      Or scanning

      Delete
    4. AnonymousMarch 28, 2020 at 7:44 PM

      maybe the camera is not fast enough to capture the fact that pattern is scanning

      Delete
  2. AnonymousMarch 28, 2020 at 7:59 PM

    The die size does not match up with resolution if it is a 10um pixel. Assuming 4:3 format and if it is truly 0.3MP then 640 x 480...with 10um pixel, it will not fit in a die size of 4.18 mm x 4.30 mm

    ReplyDelete
  3. AnonymousMarch 28, 2020 at 8:12 PM

    0.3MP with 10µm pixel size. Even with square sensor like 550X550 pixels gives an array side of 5.5X 5.5mm
    Reported figures of 4.18 X 4.3 mm seem pretty much Strange (either the resolution or the pixel size are not correct)

    ReplyDelete
  4. AnonymousMarch 28, 2020 at 10:22 PM

    0.03 Mpixels probably. The rest of the space is ToF readout, which we all know requires tons of digital memory.

    ReplyDelete
  5. AnonymousMarch 30, 2020 at 5:39 AM

    I have seen videos where the 3D meshing works great outdoors too. How does this ToF system work so well outdoors?

    ReplyDelete
  6. AnonymousMarch 30, 2020 at 12:10 PM

    Any information on the transmitter elements?

    ReplyDelete
  7. MPMarch 30, 2020 at 3:32 PM

    The meshing is not that good... old kinectFusion looked same or better.

    ReplyDelete
  8. AnonymousMarch 31, 2020 at 7:45 AM

    LiDAR "Scanner" means that you have to scan by your hand because the spots are so sparse?

    ReplyDelete
    Replies
    1. AnonymousApril 6, 2020 at 1:19 PM

      The number of emitter array does not fit with projected dot number. So, it seems to be scanning anyway...

      Delete
    2. AnonymousApril 7, 2020 at 1:20 AM

      How can you tell it's scanning? I think it's only measuring the distance to those dots.

      Delete
    3. Vladimir KoifmanApril 7, 2020 at 8:49 AM

      This is not him. The word "scanner" comes straight from Apple marketing:

      https://image-sensors-world.blogspot.com/2020/03/apple-releases-its-first-product-with.html

      Delete
  9. MPApril 8, 2020 at 1:34 AM

    the vcsel array is duplicated using a DOE. if it does scan it must be very high speed because the points look static on the video. maybe due to aliasing.

    ReplyDelete

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