Fitilar Incandescent wani nau'in hasken lantarki ne wanda ke sa mai jagora ya yi zafi da haske bayan wutar lantarki ta ratsa ta. Fitilar Incandescent tushen hasken lantarki ne da aka yi bisa ga ka'idar hasken zafi. Mafi sauƙin nau'in fitilar incandescent shine a wuce isasshen wutar lantarki ta cikin filament don ya sa ta zama mai haske, amma fitilar incandescent za ta yi ɗan gajeren lokaci.
Babban bambanci tsakanin kwararan halogen da kwararan incandescent shine harsashin gilashin fitilar halogen yana cike da wasu iskar halogen elemental (yawanci iodine ko bromine), wanda ke aiki kamar haka: Yayin da filament ɗin ke zafi, ƙwayoyin tungsten suna tururi kuma suna motsawa zuwa bangon bututun gilashi. Yayin da suke kusantar bangon bututun gilashi, tururin tungsten yana sanyaya zuwa kusan 800℃ kuma yana haɗuwa da ƙwayoyin halogen don samar da halide na tungsten (tungsten iodide ko tungsten bromide). Halide na tungsten yana ci gaba da motsawa zuwa tsakiyar bututun gilashi, yana komawa zuwa filament ɗin da aka yi oxidized. Saboda halide na tungsten wani abu ne mai rashin kwanciyar hankali, ana dumama shi kuma an sake haɗa shi zuwa tururin halogen da tungsten, wanda daga nan ake ajiye shi akan filament don rama tururin. Ta hanyar wannan tsarin sake amfani da shi, tsawon rayuwar filament ɗin ba wai kawai yana da tsawo sosai ba (kusan sau 4 na fitilar incandescent), har ma saboda filament ɗin na iya aiki a yanayin zafi mafi girma, don haka yana samun haske mafi girma, zafin launi mafi girma da ingantaccen haske mafi girma.
Inganci da ingancin fitilun mota da fitilun suna da matukar muhimmanci ga tsaron ababen hawa, kasarmu ta tsara ka'idojin kasa bisa ga ka'idojin ECE na Turai a shekarar 1984, kuma gano aikin rarraba haske na fitilun yana daya daga cikin mafi muhimmanci a cikinsu.
