"lighting source" is a correct and usable term in written English.
For example, you could write the sentence "The scientists used a special lighting source to study the fish."
There were four apartments on each floor, and the building didn't provide its tenants with heat, a lighting source, or running water — just a pump in the back yard and four outhouses.
The earliest effective motion-picture lighting source was natural daylight, which meant that films at first had to be photographed outdoors, on open-roof stages, or in glass-enclosed studios.
In 1893 William was attending a meeting on electricity in Chicago, and in his absence she continued her husband's experiments with the electric arc, which was then used as a lighting source in arc lamps.
No matter where she moves, light glints off Bergman's hair, eyes and teeth, as if invisible fireflies were hovering to provide a perpetual personal lighting source, except it somehow doesn't look staged or corny.
I came from below stairs with Colin Blakely, who held a lantern to light O'Toole, Michael Redgrave, Rosemary Harris et al. I was supposed to cover the lamp when actors passed in front, so the lighting source wouldn't be seen.
Solid-state light emitting diodes (LEDs) are emerging as an energy efficient alternative lighting source in controlled environments.
This paper reports on the thermal analysis and improvement of the light emitting diode (LED) module as a lighting source.
