Fitilun mota gabaɗaya sun ƙunshi sassa uku: kwan fitila, mai nuna haske da madubin da ya dace (magudin astigmatism).
1. kwan fitila
Kwalaben da ake amfani da su a fitilun mota sune kwalaben incandescent, kwalaben tungsten na halogen, sabbin kwalaben baka masu haske da sauransu.
(1) Kwan fitila mai ƙonewa: an yi filament ɗinsa da wayar tungsten (tungsten yana da wurin narkewa mai yawa da haske mai ƙarfi). A lokacin ƙera shi, domin ƙara tsawon rayuwar kwan fitila, ana cika kwan fitila da iskar gas mara ƙonewa (nitrogen da cakuda iskar gas mara ƙonewa). Wannan zai iya rage fitar da iskar tungsten, ƙara zafin filament, da kuma haɓaka ingancin haske. Hasken da ke fitowa daga kwan fitila mai ƙonewa yana da launin rawaya.
(2) Fitilar halide ta Tungsten: Ana saka fitilar hasken Tungsten halide a cikin iskar gas mara aiki cikin wani abu mai kama da halide (kamar iodine, chlorine, fluorine, bromine, da sauransu), ta amfani da ƙa'idar sake amfani da tungsten halide, wato, tungsten mai iskar gas da ke fitowa daga filament ɗin yana amsawa da halogen don samar da halide mai kama da tungsten mai canzawa, wanda ke yaɗuwa zuwa yankin zafi mai yawa kusa da filament ɗin, kuma zafi ya ruɓe shi, don haka tungsten ya koma filament ɗin. Halogen da aka saki yana ci gaba da yaɗuwa da shiga cikin sake zagayowar na gaba, don haka zagayowar ta ci gaba, ta haka yana hana ƙafewar tungsten da kuma yin baƙi a kwan fitila. Girman kwan fitilar halogen na Tungsten ƙarami ne, harsashin kwan fitila an yi shi ne da gilashin quartz mai juriyar zafi mai yawa da ƙarfin injina mai yawa, a ƙarƙashin irin wannan ƙarfin, hasken fitilar halogen na tungsten ya ninka fitilar incandescent sau 1.5, kuma tsawon rayuwarta ya ninka sau 2 zuwa 3.
(3) Sabon fitilar baka mai haske sosai: Wannan fitilar ba ta da filament na gargajiya a cikin kwan fitila. Madadin haka, ana sanya electrodes guda biyu a cikin bututun quartz. Ana cika bututun da xenon da karafa masu kama da juna (ko halides na ƙarfe), kuma idan akwai isasshen ƙarfin baka akan electrode (5000 ~ 12000V), iskar gas ɗin tana fara yin ionize da kuma gudanar da wutar lantarki. Kwayoyin iskar gas suna cikin yanayi mai daɗi kuma suna fara fitar da haske saboda canjin matakin kuzari na electrons. Bayan 0.1s, ƙaramin adadin tururin mercury yana ƙafe tsakanin electrodes, kuma ana canja wutar lantarki nan da nan zuwa fitar da tururin mercury, sannan a canja shi zuwa fitilar halide bayan zafin ya tashi. Bayan hasken ya kai yanayin aiki na yau da kullun na kwan fitila, ƙarfin kula da fitar da baka yana da ƙasa sosai (kimanin 35w), don haka ana iya adana 40% na makamashin lantarki.
