Tsarin hangen nesa na inji yana amfani da gajerun fitilun haske masu ƙarfi don samar da hotuna masu sauri don aikace-aikacen sarrafa bayanai daban-daban.Misali, bel mai motsi mai sauri yana aiwatar da lakabi da sauri da gano lahani ta hanyar tsarin hangen nesa na na'ura.Infrared da LaserLEDAna amfani da fitilun walƙiya a cikin gajeren zango da hangen nesa na injin gano motsi.Tsarin tsaro yana aika da sauri mai sauri, mara fahimtaFilashin LEDdon gano motsi, kamawa da adana hotunan tsaro.

Kalubale ga duk waɗannan tsarin shine samar da mafi girman halin yanzu da ɗan gajeren lokaci (microsecond) kyamarori masu kyamar kyamarori waɗanda za su iya bazuwa na dogon lokaci, kamar 100 ms zuwa fiye da 1 s.Ba abu mai sauƙi ba ne don samar da igiyar filasha filasha na ɗan gajeren lokaci tare da dogon tazara.Lokacin tuki na LED (koLED kirtani) ya tashi zuwa fiye da 1 A kuma LED akan lokaci yana taqaitaccen zuwa 'yan microse seconds, ƙalubalen ya zama mafi wahala.Yawancin direbobin LED waɗanda ke da babban ƙarfin PWM na iya ƙila ba za su iya aiwatar da babban halin yanzu tare da dogon lokacin kashewa da ɗan gajeren lokaci ba tare da rage girman raƙuman murabba'in da ake buƙata don ingantaccen sarrafa hotuna masu sauri ba.