Isikhwence sokukhanya

Isikhwence sokukhanya siyisikhwence sesiCikizi esisebenzisa umthombo wokukhanya, ngokuvamile i -light-emitting diode (LED), kanye nesihlonga kukhanya, esifana neyaca lama -photodiode, ukuze sihlonge umnyakazo ohlobene nendawo.