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Incandescent daylight Bulb Mitochondriak® Warm Spectrum E27 - Vintage ST64 40W
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Product detailed description
Incandescent Warm Spectrum E27 Bulb Mitochondriak® - natural light with a high proportion of infrared spectrum
Our incandescent (Vintage) E27 bulb Mitochondriak® is based on classic tungsten filament technology, which creates a continuous light spectrum with a high proportion of infrared radiation.
Compared to modern LED sources, it offers a significantly warmer amber character, minimal blue light component, and a more natural visual impression.
It is especially suitable for people who spend a lot of time at a computer, monitor, or in interiors dominated by LED lighting and want to enjoy a more pleasant light supplement during the day.
The bulb is intended as supplementary interior lighting, not as the main light source.
We don't guess, we measure. We measured the bulb in a dark room with two certified spectrometers at 50 cm and set it beside the sun and an ordinary white LED. Its spectrum is continuous like sunlight and reaches deep into the infrared, which an ordinary LED lacks.
- Colour temperature: 1,965 K, as warm as sunset light
- Colour rendering: Ra 96, red tones R9 86–89 (ordinary white LED: Ra 82, R9 7)
- Infrared share 700–900 nm: 79 % of the energy the instrument sees
- By Planck's law, 98 % of the filament's energy lies above 780 nm (sunlight at ground level 43 %)
Our chart ends at 900 nm. That is the instrument's limit, not the bulb's. We switch the classic bulb on during the day indoors; in the evening, red light takes over.
Technical data: E27 base, ST64 shape (Vintage), 40 W, 120 lm, AC 220–240 V, dimmable, lifespan 2,500 hours. All parameters are listed in the Specification tab.
We have enough blue light indoors. But what about infrared?
Incandescent technology produces a continuous light spectrum, which naturally resembles thermal radiation.
The tungsten filament used emits a smooth continuous spectrum of light that extends from the visible range deep into the infrared spectrum.
The result is a softer and more natural visual impression, which can serve as a lighting supplement especially in environments where you spend a lot of time in front of monitors and screens.
We switch the classic bulb on indoors during the day; in the evening, red light takes over.
If you're interested in why incandescent bulbs can be interesting even for daytime use, read our article Incandescent bulbs during the day - a simple biohack for better vision.
How to use the Mitochondriak® incandescent bulb
Simply insert the bulb into a lamp or fixture with an E27 base, suitable for this type and wattage of bulb.
It is ideal to use it as supplementary lighting in a space where you want to create a more natural light addition.
Practical use is especially during the day around monitors, screens, and work zones where artificial LED lighting dominates.
- Use as a supplement to standard lighting
- Suitable for office, living room, or relaxation zone
- Can be combined with a lampshade for a softer effect
This bulb is not intended as a main light source, but as a supplementary design and functional lighting element.
Additional parameters
| Category: | Indoor lighting solutions |
|---|---|
| Warranty: | 2 years |
| Weight: | 0.1 kg |
| EAN: | 0726529982671 |
| Model: | Incandescent bulb Mitochondriak® Warm Spectrum E27, Vintage ST64 40 W |
| ? Spectrum: | continuous from 380 nm, reaching deep into the infrared (filament ~2,100 K, peak ~1,370 nm) |
| ? Colour temperature (measured): | 1,965–1,986 K |
| ? Colour rendering Ra (measured): | 96 (R9 red tones 86–89) |
| ? Infrared share 700–900 nm (measured): | 79 % of energy within 380–900 nm |
| ? Flicker (measured): | flicker index 0.02 – smooth light of a glowing filament |
| ? Energy above 780 nm (calculated, Planck): | 98 % (sunlight at ground level 43 %) |
| ? Comparison with an ordinary white LED (measured): | blue below 500 nm 1.5 % (LED 20 %), Ra 96 (LED 82), R9 86–89 (LED 7) |
| ? Base: | E27 (standard screw) |
| ? Glass shape: | ST64 (Vintage) |
| ? Power: | 40 W |
| Voltage: | AC 220–240 V, 50/60 Hz |
| ? Luminous flux: | 120 lm |
| ? Illuminance (measured): | 120–123 lx at 50 cm |
| ? CIE 1931 chromaticity (measured): | x 0.535 / y 0.419 |
| Dimming: | yes |
| Lifespan: | 2,500 hours |
| ? Intended use: | indoors during the day – adds the long wavelengths an ordinary LED lacks |
| ? Measurement: | Mitochondriak Lab, 21 Oct 2026, 2 spectrometers, 50 cm, dark room |
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Brand Mitochondriak® offer LED devices for RED, NIR and UV light therapy, stylish blue light blocking glasses & safe indoor blue light free lighting solutions, suitable even for children, which protects your sleep, performance and circadian rhythm! We also offer stylish barefoot grounded shoes for better reconnecting with nature in our modern world!
Mitochondriak® mission is to support your mitochondria, health, sleep, energy and performance. We are leader in light therapy. Make our light enviroment better together.