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
Oldest -obsolete- BulbsOldest -obsolete- Bulbs
Older lighting elementOlder lighting element
Older lighting sourceOlder lighting source