Flood Illuminator and Dot Projector in iPhone X

Discussion in 'iPhone' started by svish, Nov 25, 2017.

  1. svish macrumors newbie

    Joined:
    Nov 25, 2017
    #1
    Recently I kept a camera in front of iPhone X and I noticed that the infrared from flood illuminator/dot projector was visible. However I noticed that infrared beam was constantly emitted (was visible through camera) even after the iPhone is unlocked. The beam was visible when the screen is on at all times. I tried with turning off Face Id and attention aware features, but the IR light is visible even then through the camera.

    Is this the way the flood illuminator/dot projector should work or is it some malfunction?

    If the infrared is emitted whenever the display is on and not just during unlocking using Face ID, then will there be any health concerns?
     
  2. C DM macrumors Sandy Bridge

    Joined:
    Oct 17, 2011
    #2
    Perhaps you might be referring to the proximity sensor?
     
  3. svish thread starter macrumors newbie

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    Nov 25, 2017
    #3
    The beam is looking exactly similar to when iPhone is unlocked using Face ID. So I think it is the flood illuminator. Can anyone check whether the same thing is happening.
     
  4. C DM, Nov 25, 2017
    Last edited: Nov 25, 2017

    C DM macrumors Sandy Bridge

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    Oct 17, 2011
    #4
  5. ideal.dreams macrumors 68020

    ideal.dreams

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    Location:
    Ohio
    #5
    I recall recently reading a post on Reddit showing the iPhone X checks for your attention every 2.5 seconds or so. I am unsure why the topic of health concerns comes up so much, you're exposed to much more IR radiation from a second in the sun or lighting a match.
     
  6. svish thread starter macrumors newbie

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    Nov 25, 2017
    #6
    I had seen that thread. But the light is white in colour and not red as specified in the page mentioned. The light is visible in a brightly lit room also and not just in dark environment. One member in that thread has also mentioned the same issue.
    --- Post Merged, Nov 25, 2017 ---
    Attention aware features are turned off but still the IR is visible through the camera.
     
  7. Superrjamz54 macrumors 6502

    Superrjamz54

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    Dec 4, 2015
    #7
    Do you turn the sun off when you go outside?
     
  8. svish thread starter macrumors newbie

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    Nov 25, 2017
    #8
    I want to know whether this is a malfunction of the flood illuminator/ dot projector. Is anyone experiencing this (white light and not red as specified in other threads).
     
  9. j800r macrumors 6502

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    Jan 5, 2011
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    Coventry, West mids, England
    #9
    If your phone is functioning fine you’re worrying too much.
     
  10. GubbyMan macrumors 6502

    GubbyMan

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    Apr 3, 2011
    #10
    Settings -> Display & Brightness -> Auto-Lock -> Never

    Go back to Home Screen and check again with your camera.
    --- Post Merged, Nov 26, 2017 ---
    BTW... Never set the Auto-Lock to Never. Will burn the OLED screen if you forget to turn the screen off and leave the phone for a few hours. The iPhone will stop constantly emitting IR if you change the time to more than 30 seconds.

    Also, don't worry about your health. IR has lower wavelength than visible light and you're constantly being exposed to light that are several orders of magnitude higher than that IR emitter can produce. Your iPhone's display probably emits more light than the flood illuminator.
     
  11. SBruv macrumors 6502a

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    Sep 25, 2008
    #11
    Disregarding the totally incorrect stuff about the IR output, where do you get your info on it stopping when auto is set to more than 30 secs?
     
  12. svish thread starter macrumors newbie

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    Nov 25, 2017
    #12

    Tried changing auto lock but it does not have any impact on the flood illuminator.
     
  13. GubbyMan macrumors 6502

    GubbyMan

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    Apr 3, 2011
    #13
    Don't have a source for IR output so don't trust my word on that. But I recorded a video using the FaceTime camera on my iPhone 5.
     
  14. SBruv macrumors 6502a

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    Sep 25, 2008
    #14
    Okay, so is that the VCSEL or the camera? If it was IR, wouldn’t it be, like, red..?
    --- Post Merged, Nov 26, 2017 ---
    And is that with Attention Awareness on or off?
     
  15. svish thread starter macrumors newbie

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    Nov 25, 2017
    #15
    Tried doing that but the situation is same.However I notice that the beam is not visible when I tried to see it using iPhone 6s. It is visible when I use my Samsung Galaxy S6 edge.
    --- Post Merged, Nov 26, 2017 ---
    I think VCSEL is used for Face ID. Anyway the light that was visible was white rays. If it is the front facing camera, then is there any reason why it should emit the beams when the iPhone is unlocked and is on home screen.

    I had attention aware features turned off.
     
  16. GubbyMan macrumors 6502

    GubbyMan

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    Apr 3, 2011
    #16
    Saying IR is red is like saying Green is Yellow, kinda. :)

    Attention awereness was on but that shouldn’t matter since awareness is when you use Face ID. This is attention detection which is used to not auto lock when you are looking at it.

    You can’t see IR on every camera. Some cameras have IR filters and some sensors can not register wavelength range less than visible red. In my case, I couldn’t use the iPhone 5 main camera so I switched to the front camera instead.

    As I said before. The reason it emitts IR from the flood illuminator is because it always looks for your face so that it can tell when to lock the phone. Your iPhone will not lock if you just look at it even if you do not touch the screen. That’s why the IR is needed.
     
  17. Travelmate2300 macrumors newbie

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    Sep 25, 2018
    #17
    yeah same thing on my iPhone Xs, the sensor light ( flood illuminator I believe) still projects as soon as the phone is active..this means the whole time you're looking at your iphone x even with face ID turned off.
     

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16 November 25, 2017