Girazi rekudzivirira kupenya rinogara richiiswa mungoro. Rine girazi rakakosha uye madiode maviri anodzivirira kupenya uye electronic controller. Electronic controller inogamuchira chiedza chemberi nechiratidzo chechiedza chekumashure chinotumirwa nephotosensitive diode. Kana chiedza chakavhenekerwa chikapenya pagirazi remukati, kana chiedza chekumashure chakakura kupfuura chiedza chepamberi, electronic controller inoburitsa voltage kune conductive layer. Voltage iri paconductive layer inochinja ruvara rweelectrochemical layer yegirazi. Voltage yakakwira, ruvara rweelectrochemical layer rwakasviba. Panguva ino, kunyangwe chiedza chereverse girazi chakasimba, anti-glare iri mukati mereverse girazi inoonekwa kumaziso emutyairi icharatidza chiedza chakasviba, kwete chinopenya.
