1.71 Ma lens a Single Vision HMC Optical
Zambiri Zopanga
Malo Ochokera: | Jiangsu | Dzina la Brand: | BORIS |
Nambala Yachitsanzo: | High Index Lens | Zida zamagalasi: | KR |
Masomphenya: | Masomphenya Amodzi | Filimu Yophimba: | HC/HMC/SHMC |
Mtundu wa Magalasi: | White (m'nyumba) | Mtundu Wopaka: | Green/Blue |
Mlozera: | 1.71 | Specific Gravity: | 1.38 |
Chitsimikizo: | CE/ISO9001 | Mtengo wa Abbe: | 37 |
Diameter: | 75/70/65 mm | Kupanga: | Zam'mlengalenga |
Mlozera wa lens umatanthawuza index of refraction (yomwe imadziwika kuti refractive index) ya zinthu zama lens pazovala zamaso. Ndi nambala yoyezera pang'ono yomwe imafotokoza momwe zinthuzo zimapindirira kuwala. Kuwala kowala kumatengera momwe kuwala komweko kumadutsa mu lens.
Zida zamagalasi zimayikidwa pa index yawo ya refractive. Refractive index iyi ndi chiŵerengero cha liwiro la kuwala pamene imayenda mumlengalenga kupita ku liwiro la kuwala pamene ikudutsa mu lens. Ndi chisonyezo cha kuchuluka kwa kuwala komwe kumapindika pamene ikuyenda kudzera mu lens. Kuwala kumatsukidwa, kapena kupindika, kutsogolo kwa disolo, ndiyenonso pamene ikutuluka mu lens. Chinthu chonyezimira chimapindika kwambiri, kotero kuti sichifunikanso kuti chikhale chofanana ndi chinthu chochepa kwambiri. Chifukwa chake mandala amatha kukhala ochepa, komanso opepuka.
Mau oyamba a Zopanga
Ndi magalasi am'maso okhazikika, pakati pa magalasiwo ndi owonda ndipo m'mbali zakunja zimakhala zokulirapo kuti ziwongolere kusinthika zomwe zimapangitsa kuti magalasi olembedwa azigwira ntchito! Ma lens apamwamba amakhala ndi index yotsika kwambiri kuposa ma lens wamba, zomwe zikutanthauza kuti safunikira kukhala okhuthala mozungulira m'mphepete kuti agwire bwino ntchito.
Ma lens apamwamba kwambiri amatanthauza kuti mandala omwewo amatha kukhala ochepa komanso opepuka. Izi zimalola magalasi anu kukhala apamwamba komanso omasuka momwe mungathere. Magalasi apamwamba kwambiri amakhala opindulitsa makamaka ngati muli ndi magalasi amphamvu olembera kuti muwone pafupi, kuyang'ana patali, kapena astigmatism. Komabe, ngakhale iwo omwe ali ndi magalasi ocheperako amatha kupindula ndi ma lens apamwamba.
1.71 ndi chinthu chotsutsa. Nthawi zambiri, kuchuluka kwa refractive index kumachepetsa nambala ya Abbe. Nambala ya 1.67 Abbe ndi 32, 1.74 ndi 33, ndipo 1.71 ikhoza kuchita 37. Kulimbana ndi kupambana kumapambana. Nambala ya Abbe ndi yokwera, kubalalitsidwa kumakhala kochepa, komwe kumamveka momveka bwino.1.67 ndi yotsika mtengo kwambiri kuposa 1.74, koma ndi yochuluka kwambiri ponena za kutalika. 1.74 ndiyoonda, koma mtengo wake ndi wokwera kwambiri, nthawi yapakati ndi yayikulu. Anzanu ambiri amatha kusankha 1.67 pa chikwama chawo. Ndipo 1.71 imadzaza kusiyana kumeneku.