Lub tswv yim ntawm lub teeb yuav tsum nkag siab kom nkag siab txog lub tswv yim ntawm kev pom kev hmo ntuj. Lub teeb yoj lub zog yog inversely proportional rau nws wavelength; qhov siab dua lub zog, qhov luv lub wavelength. Lub zog ntawm lub teeb pom kev yog muab faib ua liab thiab violet, nrog violet muaj qhov siab tshaj plaws thiab liab muaj qhov qis tshaj. Lub infrared spectrum nyob ib sab ntawm lub teeb pom kev zoo. Muaj ntau ntau pawg rau infrared:
Nyob ze infrared (ze R)—Nyob ze infrared muaj lub wavelength ntau ntawm 0.7–1.3 microns thiab yog ib daim ntawv ntawm lub teeb uas nyob ze rau pom lub teeb (1 micron yog sib npaug rau ib kaum txhiab ntawm ib 'meter').
Mid-Infrared (Mid-IR) - Qhov nruab nrab-infrared muaj qhov sib txawv ntawm 1.3 txog 3 microns. Ntau cov khoom siv hluav taws xob, suav nrog cov chaw taws teeb tswj, siv cov thev naus laus zis ze-infrared thiab nruab nrab-infrared.
Thermal Infrared (Thermal IR): Nrog lub wavelength ntawm 3-30 microns, thermal infrared ua rau feem ntau ntawm cov infrared spectrum. Vim tias thermal infrared yog tawm los ntawm cov khoom es tsis yog qhov cuam tshuam los ntawm lawv, nws txawv ntawm ob hom ntawm infrared. Ib qho kev hloov hauv ib qho khoom atom ua rau nws tsim lub teeb infrared.
