Hasken ja da hasken infrared nau'i biyu ne na hasken lantarki wanda ke cikin hasken da ake iya gani da wanda ba a iya gani, bi da bi.
Hasken ja wani nau'in haske ne da ake iya gani wanda yake da tsawon tsayin tsayi da kuma ƙarancin mita idan aka kwatanta da sauran launuka a cikin hasken da ake iya gani. Sau da yawa ana amfani da shi a cikin haske da kuma na'urar sigina, kamar a cikin fitilun tsayawa. A magani, ana amfani da maganin hasken ja don magance cututtuka daban-daban kamar matsalolin fata, ciwon gaɓɓai, da ciwon tsoka.
Hasken infrared, a gefe guda kuma, yana da tsawon tsayi da mita fiye da hasken ja kuma ba a iya gani da idon ɗan adam. Ana amfani da shi a aikace-aikace daban-daban, kamar a cikin na'urorin sarrafawa na nesa, kyamarorin ɗaukar hoto na zafi, da kuma a matsayin tushen zafi a cikin hanyoyin inductrial. A magani, ana amfani da maganin hasken infrared don rage radadi da kuma inganta zagayawar jini.
Hasken ja da hasken infrared suna da halaye na musamman waɗanda ke sa su zama masu amfani a fannoni daban-daban, tun daga haske da sigina zuwa magani da fasaha.