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Forum IKEA filament type LED buld - unveal the individual LEDs
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Related

IKEA filament type LED buld - unveal the individual LEDs

Jan Cumps
Jan Cumps over 2 years ago

I bought a TRÅDFRI LED lamp a while ago. It's the type that looks like a traditional lamp, with a filament.

image

image: IKEA

When you look at the lamp (switched on or off) you can't see the individual LEDs. But the fumed glass lampshade that I have put it in, reflects the light, and you can see the individual little LEDs in the reflection with the naked eye:

image

I took the photo with the lowest possible exposure. Here's normal exposure:

image

As usual, the photo does not show what I really see :). So hard to photograph light and achieve the actual WYSIWYG.

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  • Gough Lui
    Gough Lui over 2 years ago +3
    Some bulbs can be dimmed, which would make spotting them easier ... I've only got linear filament bulbs - e.g. https://goughlui.com/2022/09/04/quick-review-lenovo-smart-filament-bulb-g95-e27-806lm-se…
  • genebren
    genebren over 2 years ago +2
    LED filaments are being used a lot these days. I have found that if I take control of the intensity range on my phone, I can capture an image the is not saturated on the highest intensity. Then I can use…
  • shabaz
    shabaz over 2 years ago +1
    LED filaments are cool : ) Some look better than traditional tungsten looked like : ) Interesting how the shade reflection helped with the photo. Maybe there's some polarization or something going on…
  • genebren
    genebren over 2 years ago

    LED filaments are being used a lot these days.  I have found that if I take control of the intensity range on my phone, I can capture an image the is not saturated on the highest intensity.  Then I can use an image processor package (I use ImageJ) to threshold the the image and create a visible separation between the bright pixel, enough to expose the slight gaps in the LED filament.

    Still, cool light and fixture.

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  • Gough Lui
    Gough Lui over 2 years ago

    Some bulbs can be dimmed, which would make spotting them easier ...

    I've only got linear filament bulbs - e.g. https://goughlui.com/2022/09/04/quick-review-lenovo-smart-filament-bulb-g95-e27-806lm-se-14bea/

    The LEDs in mine seem to be staggered.

    - Gough

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  • shabaz
    shabaz over 2 years ago

    LED filaments are cool : ) Some look better than traditional tungsten looked like : )

    Interesting how the shade reflection helped with the photo. Maybe there's some polarization or something going on.

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