yeutterg

Bumping this thread, did anyone try it? I'm looking for a 2700k 400 lumen incandescent replacement. Flicker-free is crucial...at least as good as incandescent if not better. @yeutterg bulb looks worth a try.

I see it was measured here on LightBulb database:

However, it unfortunately failed this Redditors strict formula, which has some decent basis for its criteria. It states:

Acceptable [maximum] modulation percentage = 0.0025 * PWM Hertz

In this case, the bulb has 120Hz and 1% flicker depth:

0.0025 * 120Hz = 0.3%

We cannot exceed 0.3% flicker. 1% > 0.3% so the bulb does not pass this criteria -- albeit its not too far off. If the bulb can get a higher flicker rate it would definitely be safe.

@yeutterg said that someone in the pro-incandescent community believes that the lack of IR in LEDs is to be blamed. See his posts on the subject at this link.

Yesterday I entered a meeting room with LED overhead lighting to make a phone call. I kept only one raw of lamps on, away from me, and it was okay. Then I stupidly walked around and spent a few minutes right under the LEDs and afterwards I got neck tension and feeling of sand in my eyes. Neither swimming reverted the situation, when it normally soothes my symptoms. They lasted until the day after. It does not sound possible, I know, but that is the way it is for me.

I was wondering if that somehow relates to what @yeutterg was saying in posts of a few months ago.

Even then, some still claim to get pain with very good LED sources, which may apply to you. We don't know why this is. Some suspect the lack of IR, but it hasn't been studied enough yet to say definitively.
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Take a look at the research of Alexander Wunsch. A number of people in the pro-incandescent community are advocates for his work.