Kwicandelo lokwenziwa kwezixhobo ze-optical, ukuchaneka kweelensi kumisela ngokuthe ngqo umgangatho wemifanekiso. Ukususela kwiiteleskopu zeenkwenkwezi ukuya kwizixhobo ezincinci, ukusuka kwiikhamera eziphezulu ukuya kumatshini we-photolithography ochanekileyo, ukusebenza okugqwesileyo kwesixhobo ngasinye se-optical kuxhomekeke kwinkxaso yeelensi ezichanekileyo. Izixhobo ze-granite ngokuchanekileyo, ezineempawu zazo ezingenakuthelekiswa nanto, ziba sisitshixo sokwenza amaqonga okusila iilensi ezichanekileyo, ziqhubela phambili ukuveliswa kwezixhobo ze-optical kwinqanaba elitsha lokuchaneka.
Iingenelo zendalo zezixhobo zokuchaneka kwegranite
I-Granite yadalwa ngeenkqubo zejoloji kwiminyaka engamakhulu ezigidi kwaye ineempawu zomzimba ezikhethekileyo, nto leyo eyenza ukuba ibe yinto efanelekileyo yokwakha amaqonga okusila iilensi achanekileyo. Okokuqala, i-coefficient yokwandiswa kobushushu be-granite iphantsi kakhulu, idla ngokuqala kwi-5 ukuya kwi-7×10⁻⁶/℃, kwaye ayichaphazeleki kukutshintshatshintsha kobushushu bendalo. Ngexesha lenkqubo yokusila ilensi, ubushushu obuveliswa kukusebenza kwezixhobo okanye utshintsho kubushushu bendalo abuyi kubangela ukuguquka okukhulu kweqonga lokusila le-granite, ngaloo ndlela kuqinisekiswa ukuba ukuchaneka kobukhulu beelensi kuhlala kuzinzile kuyo yonke inkqubo yokusila kwaye kuthintelwe ukuphambuka kwe-curvature yeelensi okubangelwa kukwanda kobushushu kunye nokucutheka.
Okwesibini, igranite inamandla amahle kakhulu okunciphisa ukungcangcazela. Ukusila ilensi ye-optical kufuna indawo yokucubungula ezinzileyo kakhulu. Nokuba kukungcangcazela okuncinci kunokubangela iziphene kumphezulu welensi. Igranite inokufunxa ngempumelelo amandla okungcangcazela angaphandle, inciphise ukuphazamiseka kokungcangcazela ngexesha lenkqubo yokusila, yehlise ubukhulu bokungcangcazela ngama-60% ukuya kuma-80%, iqinisekise indawo echanekileyo phakathi kwesixhobo sokusila kunye nelensi, kwaye incede ekufezekiseni ukuthamba okuphezulu kakhulu kumphezulu welensi.
Ukongeza, i-granite inobunzima obuphezulu kunye nokumelana nokuguguleka okunamandla, kunye nobunzima be-Mohs obuyi-6 ukuya kwi-7. Kwimisebenzi yokusila ilensi yexesha elide neliphezulu, amaqonga okusila i-granite awagugi, anokuhlala egcina ukuchaneka okuzinzileyo, andise ubomi benkonzo yezixhobo, kwaye anciphise iindleko zokulungisa.
Itekhnoloji yokucubungula ngokuchanekileyo amaqonga okugaya i-granite
Ukuze kusetyenziswe ngokupheleleyo iingenelo zokusebenza kwegranite, iqonga lokusila ilensi elichanekileyo lisebenzisa iinkqubo zobuchwepheshe eziphambili ngexesha lenkqubo yokuvelisa. Ngokusebenzisa ubuchwepheshe bokusila nokupolisha obuchanekileyo kakhulu, ubucaba bomphezulu weqonga legranite bunokulawulwa ngaphakathi kwe-±0.002mm/m, kwaye uburhabaxa bomphezulu bunokufikelela kwinqanaba le-nanometer. Lo mgangatho womphezulu ochanekileyo kakhulu ubonelela ngomphezulu ochanekileyo wokubhekisa kwilensi, ukuqinisekisa ukuba izixhobo zokusila zinokucubungula iilensi ngokulinganayo nangokuzinzileyo.
Okwangoku, kwinkqubo yoyilo kunye nokuveliswa kweqonga lokusila legranite, izakhiwo ezichanekileyo zoomatshini kunye neenkqubo zokuhamba ziyadityaniswa. Umzekelo, ngokuhlanganisa iireli zesikhokelo ezibhabhayo ngomoya ezichanekileyo kunye neenkqubo ze-servo motor drive, izixhobo zokusila zinokufikelela kwintshukumo egudileyo nechanekileyo eqongeni, kunye nokuchaneka kokubeka intshukumo ye-±0.005mm. Olu lawulo lokushukuma oluchanekileyo, kunye nokuzinza kweqonga legranite, lunokuhlangabezana neemfuno zokusila zeendawo ezigobileyo ezintsonkothileyo kwiintlobo ezahlukeneyo zeelensi. Nokuba ziilensi ezigobileyo, iilensi ezijijekileyo, okanye iilensi ze-aspheric, ukucutshungulwa okuchanekileyo kunokufezekiswa.
Ixabiso leshishini lezixhobo zokuchaneka kwegranite
Ixesha leposi: Meyi-07-2025