Magalasi amoto opangidwa ndi polarized, ma visor amagalimoto, magalasi oletsa kuwala kwagalimoto, magalasi otchingira dzuwa, amachepetsa kunyezimira kwa dzuwa, amathandizira kumveketsa bwino m'malo, ndikupewa khungu la chipale chofewa 1919SBT
Kugwiritsa ntchito tsiku ndi tsiku-sunshade polarizer: sinthani kunyezimira kwadzuwa, kunyezimira kwa matabwa apamwamba, kusefa bwino kuwala, kusintha masomphenya, kusefa kuwala kwachindunji, khalani kutali ndi kuwonongeka kwamphamvu kwa kuwala, kuchepetsa malo akhungu a masomphenya, kuchepetsa kuopsa kwa chitetezo, ndikupangitsa kuyendetsa bwino.