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 ingasetyenziselwa ngokubanzi ukukhanya, ukuhamba, uphando lwezenzululwazi kunye nokunye.
I-Fresnel lens yimo yepleyiti ecaba ebonisa kwaye igxininise imitha. Ukusebenzisa lo mgaqo kunye neteknoloji yokudibanisa, sinokuguqula i-paraboloid, i-ellipsoid kunye ne-high-order surface optical lens yayo nayiphi na i-aperture ibe yimilo yendiza, ukuze siqonde ukuhlukanisa i-Fresnel lens yayo nayiphi na isayizi, kwaye sihlolisise ukusetyenziswa kwamandla elanga kunye nesibonisi esikhulu (esinjalo. njenge guizhou Tianyan iteleskopu yerediyo yokuvula iimitha ezingama-500).
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
