Blue-light-blocking glasses have filters that block blue light waves given off by any light source -- the sun, screens, lightbulbs, etc.

Source: https://www.cnet.com/health/personal-care/best-blue-light-blocking-glasses/

He said many farmers were transitioning from incandescent light bulbs to LED and fluorescent bulbs without realising that the incandescent bulb’s primary function was not for providing a light source but was typically used as a heat source.

Source: https://jamaica-gleaner.com/article/lead-stories/20230813/farmers-worry-ban-incandescent-bulbs-will-impact-operations

His lightsaber provides a color light source that illuminates the inked art piece with hues of green.

Source: https://comicbook.com/comics/news/covrprice-top-10-comic-books-rising-value-last-week-spider-boy-high-republic-secret-wars/

On the other hand, the Flashlight must be picked up from a fallen comrade and is a better light source, but it also uses batteries.

Source: https://gamerant.com/sons-of-the-forest-how-get-night-vision-goggles/

The calibration and testing platform of the sun sensor includes a solar simulation light source, high-precision 2-axis turntable, and servo controller.

Source: https://phys.org/news/2023-05-deep-neural-network-based-quadrant-analog.html