Silly question alert! Warm white (not yellow) LED bulb

D

Din

Level D
Silly question I know, still thought of asking.
Was a great fan of 'too much light' but I realised it actually cause eye strain. I feel warm white light is soothing and comfortable.
Tried to buy those and got PHILIPS 5-watt LED bulb (warm white). But I see it is yellow actually.
Reading more on it, turned out that, the colour temperature of the bulb is 3000 Kelvin, which falls on the yellow side of the spectrum.
4000 to 6000 Kelvin bulbs falls on the warm white category?
Those are available online? Any particular brand/model to check for (online/offline)?
Also, the colour temperature near to 10,000K (as they call natural light) is more comfortable/less strain to eyes?
 
Get phillips scene switch light, which has 3 color modes, 6500k, 4000k, 3000k. What you need I think is 4000k.

3000k is very yellow.

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Din said:
Silly question I know, still thought of asking.
Was a great fan of 'too much light' but I realised it actually cause eye strain. I feel warm white light is soothing and comfortable.
Tried to buy those and got PHILIPS 5-watt LED bulb (warm white). But I see it is yellow actually.
Reading more on it, turned out that, the colour temperature of the bulb is 3000 Kelvin, which falls on the yellow side of the spectrum.
4000 to 6000 Kelvin bulbs falls on the warm white category?
Those are available online? Any particular brand/model to check for (online/offline)?
Also, the colour temperature near to 10,000K (as they call natural light) is more comfortable/less strain to eyes?
Click to expand...
Just got these Osram LED lights https://www.amazon.in/gp/aw/d/B08F9MKBCM 4000k 10w LEDs, they advertise 120 lumens/watts, so probably aren't driving the individual LEDs very hard, and will likely last longer. The light itself is very soothing and they claim >80Ra (CRI). All this however means they're on the expensive side, 600Rs per pair, but in my opinion worth it.

If you want some cheaper options, these https://www.amazon.in/gp/aw/d/B0CDL8DW2Y?psc=1 10w 4000k from Philips are also a good choice.
 
Din said:
Silly question I know, still thought of asking.
Was a great fan of 'too much light' but I realised it actually cause eye strain. I feel warm white light is soothing and comfortable.
Tried to buy those and got PHILIPS 5-watt LED bulb (warm white). But I see it is yellow actually.
Reading more on it, turned out that, the colour temperature of the bulb is 3000 Kelvin, which falls on the yellow side of the spectrum.
4000 to 6000 Kelvin bulbs falls on the warm white category?
Those are available online? Any particular brand/model to check for (online/offline)?
Also, the colour temperature near to 10,000K (as they call natural light) is more comfortable/less strain to eyes?
Click to expand...
4000K is called as natural white in Indian lamp terminology. You can easily buy it in big cities but in bigger lighting stores.

10000k would be blindingly Blue. It is not natural white. It would be very uncomfortable.
 
Thank you for the info. Mainly on the colour temperature and the range. That makes sense. Will sure search for 4000K, should be available in Cochin. Will also check online.
 
Hello, 20+yrs experience in lighting here.

Warmwhite appears very yellow if cri of fixture is imbalanced.

Ideally Lighting needs to mimic natural sunlight, by following the circadian rhythm.

Moreover, Indoor lighting perception of Color temperature is very different from outdoor perception.

Cri should be highest possible. 90+ minimum and 95+ if viable.

If budget is a constraint, one should ensure:
Anti-Glare Value: UGR<19 (Most important, because it determines Glare)
Color temperature : 3000k - 4000k
Color rendering index: Cri 90+
This can be achieved by proper placement and direction of the light fixture in respect to the eyes and the object. Any light fixture's light should not hit the eyes. It should always hit objects and bounce off to our eyes in a subtle way.

No glare should come, like light coming from windows bouncing from different walls and surfaces, becomes a very soft bright glow. So lighting with honeycomb filters, anti-glare properties like UGR less than 19 is recommended.

This helps our brain to be most productive, helps us remove any kind of overstimulation.

At any budget, even 500rs, proper placement, direction of light fixture (with right properties) can solve many issues.

One can DM me or put here a sketch of
Human, Book, Light source and i can guide.
Also matters what time of day you usually read more.
 
Last edited:
sato1986 said:
Hello, 20+yrs experience in lighting here.

Warmwhite appears very yellow if cri of fixture is imbalanced.

Ideally Lighting needs to mimic natural sunlight, by following the circadian rhythm.

Moreover, Indoor lighting perception of Color temperature is very different from outdoor perception.

Cri should be highest possible. 90+ minimum and 95+ if viable.

If budget is a constraint, one should ensure:
Anti-Glare Value: UGR<19 (Most important, because it determines Glare)
Color temperature : 3000k - 4000k
Color rendering index: Cri 90+
This can be achieved by proper placement and direction of the light fixture in respect to the eyes and the object. Any light fixture's light should not hit the eyes. It should always hit objects and bounce off to our eyes in a subtle way.

No glare should come, like light coming from windows bouncing from different walls and surfaces, becomes a very soft bright glow. So lighting with honeycomb filters, anti-glare properties like UGR less than 19 is recommended.

This helps our brain to be most productive, helps us remove any kind of overstimulation.

At any budget, even 500rs, proper placement, direction of light fixture (with right properties) can solve many issues.

One can DM me or put here a sketch of
Human, Book, Light source and i can guide.
Also matters what time of day you usually read more.
Click to expand...
WOW! That is some info. Thank you. Will read more on it and will message.
 
sato1986 said:
Hello, 20+yrs experience in lighting here.

Warmwhite appears very yellow if cri of fixture is imbalanced.

Ideally Lighting needs to mimic natural sunlight, by following the circadian rhythm.

Moreover, Indoor lighting perception of Color temperature is very different from outdoor perception.

Cri should be highest possible. 90+ minimum and 95+ if viable.

If budget is a constraint, one should ensure:
Anti-Glare Value: UGR<19 (Most important, because it determines Glare)
Color temperature : 3000k - 4000k
Color rendering index: Cri 90+
This can be achieved by proper placement and direction of the light fixture in respect to the eyes and the object. Any light fixture's light should not hit the eyes. It should always hit objects and bounce off to our eyes in a subtle way.

No glare should come, like light coming from windows bouncing from different walls and surfaces, becomes a very soft bright glow. So lighting with honeycomb filters, anti-glare properties like UGR less than 19 is recommended.

This helps our brain to be most productive, helps us remove any kind of overstimulation.

At any budget, even 500rs, proper placement, direction of light fixture (with right properties) can solve many issues.

One can DM me or put here a sketch of
Human, Book, Light source and i can guide.
Also matters what time of day you usually read more.
Click to expand...
did all these things possible for/with just Rs.500/- LED Bulb or Tube, without investing more and more in surrounding/accessories to get such effects?
if not than Murgi Se Masala Mehenga type situation arise.
 
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