Light emission characteristics of a white light source are often expressed by a "color temperature" and is measured in K (Kelvin). If you have been exposed to indoor or studio photography you will know that a 5000K lamp will get you close to natural daylight.
Office and a classroom environment often have similarities as they are places where a lot of reading and evaluation of physical items are required. It has been proven that light sources nearer to daylight give higher contrast on printed matter and therefore make it easier to read longer with less fatigue.
Many organizations arbitrarily chose 4100K because a bright white fluorescent tube has about that color temperature, this has to do with the phosphors that convert UV light from the gas discharge tube into visible light and happens to be that 4100K producing phosphors are the lowest cost to produce for the fluorescent tube manufacturers, it also helps GE and others to create a specification that produces sort of dirty white light and is outside the real daylight spectrum.
ome lighting engineers go so far as to say that daylight is acceptable lighting but if a light can produce daylight it is not acceptable as it is more than 4100K - well a child could tell you that is plain wrong.
There is however a reason for standardizing on a color temperature and that is consistent look! If more than one fixture is in an area and there were different color temperatures in use it will look inconsistent both looking at the lights and on the illuminated target area.
Therefore it is more appropriate to apply the rule that if you are changing technologies you should do this for the whole area. Also mixing 4100K LED and 4100K fluorescent is not going to work well as the LED lights will remain at that color temperature for a long time while the fluorescents will change their color temperature significantly with use.
LED phosphors generally perform better at 5000K and today's 5000..5200K LED packages have very well balanced color spectrums making them appear almost like daylight, a good light for almost any task.
Rex LED bulb color temperature, 3000K. 4000K& nbsp; 6000k.
The color temperature of OSRAM headlamp is 3900k, 4200k. 5000K. 5500k. 6000K
The color temperature of Philips's headlights is mainly 6000K. There are also 6200k. Among them, 6000K sells the most,
Philips HID xenon lamp color temperature, 4300k. 4500k. 5000K. 6000K
Philips color temperature adjustable living room ceiling lamp color temperature adjustment range is 2700k. 4000K. 5000K. 6500k
This paper summarizes the outdoor LED spotlight lighting, considering the rain and fog, the highest color temperature is 6000K. It is suitable, almost no blue light and purple light, blue light and purple light, causing irreversible damage to the eyes.