Iilensi zamehlo ziba ngqindilili kwaye zincinci; Iilensi zeFresnel zibhityile kwaye zikhulu ngobukhulu.
Umgaqo weFresnel lens yingcali yefiziksi yaseFransi uAugustine. Yaqanjwa nguAugustinFresnel, eyaguqula iilensi ezingqukuva kunye ne-aspherical zibe ziilensi ezikhanyayo nezicekethekileyo zokumila kweplani ukuze kuphunyezwe isiphumo esifanayo sokubona. Emva koko, inani elikhulu leebhendi ze-optical zacutshungulwa kumgangatho ocwangcisiweyo ngokulungiswa kwe-ultra-precision, kwaye iqela ngalinye lidlale indima yelensi ezimeleyo. Ilensi yeFresnel yeyona ndlela ilungileyo yokubona ilensi enkulu, ecaba kunye nebhityileyo.
Ukwenziwa kweelensi zeFeist Fresnel, ngakumbi iilensi zobungakanani obukhulu, kubandakanya ukulinganisa uyilo lwamehlo, itekhnoloji yokuvelisa echanekileyo, izixhobo zepolymer kunye nenkqubo yokubumba echanekileyo. I-Fresnel lens inokusetyenziswa ngokubanzi ekukhanyeni, ukuhamba, uphando lwezenzululwazi kunye nokunye.
I-Fresnel lens yimo yepleyiti ecaba ebonisa kwaye igxininise imitha. Ngokusebenzisa lo mgaqo kunye neteknoloji yokudibanisa, singakwazi ukuguqula i-paraboloid, i-ellipsoid kunye ne-high order surface optical lens yayo nayiphi na i-aperture ibe yimo yendiza, ukuze siqonde ukudibanisa i-Fresnel lens yayo nayiphi na isayizi, kwaye sihlolisise ukusetyenziswa kwamandla elanga kunye nesibonisi esikhulu (njenge-guizhou Tianyan 500-meter aperture radio telescope).
Itekhnoloji kaMosaic engapheliyo yeFresnel lens ingasetyenziswa ukusuka kwiimitha ezininzi, ukuya kumakhulu eemitha, nakweyiphi na isayizi enkulu. I-Guizhou Tianjia i-parabolic reflection surface enobubanzi beemitha ezingama-500 inokusebenzisa le teknoloji kaMosaic ukulinganisa umphezulu weparabolic kunye neflethi yeFresnel lens, enciphisa ubunzima bokucubungula kwaye kulula ukuyifaka kunye nokulungelelanisa.
Ixesha lokuposa: Dec-24-2021
