Isibani esikhanyayo siwuhlobo lomthombo wokukhanya kagesi okwenza umqhubi ashise futhi akhanye ngemva kokuba ugesi ugeleza kuwo. Isibani esikhanyayo siwumthombo wokukhanya kagesi owenziwe ngokwesimiso sokukhanya okushisa. Uhlobo olulula lwesibani esikhanyayo ukudlulisa ugesi owanele ngentambo ukuze sikhanye, kodwa isibani esikhanyayo sizohlala isikhathi esifushane.
Umehluko omkhulu phakathi kwama-halogen bulbs nama-incandescent bulbs ukuthi igobolondo lengilazi lesibani se-halogen ligcwele igesi ethile ye-halogen elemental (ngokuvamile i-iodine noma i-bromine), esebenza kanje: Njengoba i-filament ishisa, ama-athomu e-tungsten ayashiswa bese ehambela odongeni lwe-glass tube. Njengoba esondela odongeni lwe-glass tube, i-tungsten vapor ipholiswa cishe ku-800℃ futhi ihlangana nama-athomu e-halogen ukwakha i-tungsten halide (i-tungsten iodide noma i-tungsten bromide). I-tungsten halide iyaqhubeka nokuhamba iye enkabeni ye-glass tube, ibuyela ku-oxidized filament. Ngenxa yokuthi i-tungsten halide iyinhlanganisela engazinzile kakhulu, iyashiswa futhi ihlanganiswe kabusha ibe yi-halogen vapor kanye ne-tungsten, ebekwa ku-filament ukuze ilungise ukuhwamuka. Ngale nqubo yokuvuselela, impilo yesevisi ye-filament ayigcini nje ngokwandiswa kakhulu (cishe izikhathi ezine kunesibani se-incandescent), kodwa futhi ngoba i-filament ingasebenza ekushiseni okuphezulu, ngaleyo ndlela ithole ukukhanya okuphezulu, izinga lokushisa eliphezulu lombala kanye nokusebenza kahle okuphezulu kokukhanya.
Ikhwalithi kanye nokusebenza kwezibani zezimoto nezibani kubaluleke kakhulu ekuphepheni kwezimoto, izwe lethu lakha amazinga kazwelonke ngokwezindinganiso ze-European ECE ngo-1984, futhi ukutholakala kokusebenza kokusabalalisa ukukhanya kwezibani kungenye yezinto ezibaluleke kakhulu phakathi kwazo.
