Many versions of the light source has been made over the years.
Over time, it gets more robust, of smaller cross-section, more efficient and runs cooler.
About Light Source construction
- LEDs are arranged to provide 360 degree light
- LEDs have 80 >CRI
- LEDs efficiency is >120 lumens / watt (for older lamps) and >160 lm/watt newer designs
- LEDs correlated color temperature (CCT) is <2700 K (older design) 2200K is the new default