What is a photoconductive lighting device?

Light-guiding lighting is to collect the outdoor light, refract and transmit it through the light guide tube, and then irradiate it indoors through a diffuser (similar to a lampshade). This system does not belong to lamps. In 2003, the American building code classified it as doors and windows. The advantage of this system is that it can make up for the indoor darkness caused by the inability to open windows or insufficient light in the basement.