Txawm hais tias muaj ntau yam khoom siv pom kev hmo ntuj, lawv txhua tus feem ntau muaj cov tshuab kho qhov muag, cov yeeb yaj kiab lossis cov raj qis, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob. Lawm, lub teeb pom kev infrared kuj tseem yuav suav nrog cov cuab yeej siv hluav taws xob hmo ntuj pom kev, uas muaj lub raj duab lossis lub raj qis qis raws li nws "lub siab." Cov duab infrared uas pom tsis tau tuaj yeem hloov mus rau hauv cov duab pom tau siv cov duab hloov cov raj, thiab lub teeb tsis muaj zog uas pom tsis tau rau tib neeg lub qhov muag tuaj yeem pom tau siv cov raj qis qis los ntawm kev nthuav tawm ntau txhiab lossis ntau pua txhiab zaus. .
Lub teeb muaj zog txaus ntshai thaum hmo ntuj pom gadgets vim nws txaus ntshai lub koob yees duab raj thiab lub raj qis. Raws li ib qho piv txwv, lub yees duab tube lub photocathode emits electrons thaum raug lub teeb infrared, thiab cov electrons yog ceev mus rau lub fluorescent screen los ntawm high voltage teb (16-21 kV) thiab lub electron lens, ua rau lub fluorescent screen nrawm. Lub hom phiaj duab tau nthuav tawm kom meej. Cov yeeb yaj kiab yeeb yaj kiab tso tawm ntau cov hluav taws xob ntau lub teeb pom kev zoo nws tau txais, uas ua rau lub vijtsam fluorescent tsim lub teeb pom kev zoo dua thiab tsim cov duab ci dua.In essence, lawv yog proportional. Txawm hais tias saturation yuav tshwm sim thiab lub hom phiaj yuav tsis pom meej yog tias lub teeb sab nraud yog khaus heev, cov electrons tso tawm los ntawm photocathode yuav tsis nce mus rau ib theem. Lub photocathode ntawm lub raj yuav kub hnyiab tau yog tias lub teeb ntau dhau yog dheev pov tseg, uas tiv thaiv cov hluav taws xob tawm thiab, ntawm chav kawm, tiv thaiv tsis pom kev.
Txawm hais tias hmo ntuj pom gadget muaj qee yam kev tiv thaiv glare, nws muaj qhov txwv tsis pub siv thiab yuav tsum tau siv nruj me ntsis raws li cov cai. Muab tso rau ntawm lub hom phiaj lens npog lossis tig tawm lub hwj chim hloov thaum ua haujlwm nrog lub teeb ci lossis thaum ntsuas lub hom phiaj thoob plaws hnub. Kev siv cov cuab yeej pom kev hmo ntuj kom raug tuaj yeem ua rau nws txoj sia nyob ntev thiab tiv thaiv kev puas tsuaj yam tsis xav tau, tso cai rau nws ua rau nws lub peev xwm siab tshaj plaws.
