Emikhakheni yokuhlolwa kokukhanya okunembile kanye nokukhiqizwa okuphezulu, ukuzinza kwe-angular ezingeni le-0.01μrad kuyinkomba ebalulekile. Amapulatifomu okukhanya e-granite, anezakhiwo zawo ezibonakalayo kanye nokusebenzisana kwezobuchwepheshe, abe yinkampani eyinhloko yokufeza ukunemba okuphezulu kakhulu.
Izinzuzo zezinto zokwakha zibeka isisekelo esiqinile. I-granite, njengedwala eliyi-igneous elakhiwe yi-geology eminyakeni engamakhulu ezigidi, idume nge-coefficient yayo ephansi kakhulu yokwanda kokushisa, okuyingxenye yensimbi kanye nengxenye yesine ye-aluminium. Lapho izinga lokushisa lishintsha ngo-1℃, ingxenye ye-granite eyimitha eli-1 ubude ikhula ngama-micrometer ayi-6 kuphela, kuyilapho ingxenye ye-aluminium ikhula ngama-micrometer angama-23. Lokhu kugwema ngempumelelo ukuphambuka kwe-angular okubangelwa ukuguqulwa kokushisa. Okwamanje, ukusebenza kwayo okuhle kakhulu kokuncibilikisa kunganciphisa ngokushesha ukudlidliza kwangaphandle, kugcine ipulatifomu isesimweni esingaguquki futhi kunciphise ukuphazamiseka kwezingxenye ze-optical.
Umklamo wesakhiwo oqondile uthuthukisa ukuqina. Ipulatifomu ye-granite optical, ngemuva komklamo wesakhiwo esenziwe ngomshini olungiselelwe, ithuthukise kakhulu ukuqina futhi ingamelana ngempumelelo nokuguquguquka komthwalo. Ukunemba kwayo kokucubungula ubuso kufinyelela ezingeni eliphezulu embonini. Uma sithatha ukunemba kwezinga le-00 okuhlangabezana nezindinganiso ze-GB4987-85 njengesibonelo, ukubekezelelana kokuthamba kungama-2×(1 + d/1000)μm kuphela (u-d ubude obuqondile), okunikeza ireferensi yokufaka ethamba kakhulu yemishini ye-optical.
Ukulinganiswa okunamandla kufezwa ngokubambisana kwezobuchwepheshe. Uma ifakwe izinhlelo zokuhlukanisa ukudlidliza ezithuthukisiwe njengeziphethu zomoya noma i-magnetic levitation, ipulatifomu ye-granite ingahlukanisa ukudlidliza okunemvamisa ephansi kanye nemvamisa ephezulu. Ingezwe yimishini yokulinganisa enembile kakhulu njenge-laser interferometers, izinguquko ze-Angle ziqashwa ngesikhathi sangempela. Uma ukuphambuka kudlula umkhawulo we-0.01μrad, uhlelo lokulawula impendulo lushayela ngokushesha indlela yokulungisa kahle ukuqinisekisa ukuthi ipulatifomu ihlala isesimweni sokunemba okuphezulu nesizinzile.
Kusukela engqikithini yezinto ezibonakalayo kuya ekuthuthukisweni kobuchwepheshe, ipulatifomu ye-granite optical, enokuqina kokushisa, ukumelana nokudlidliza kanye nezinzuzo zokucubungula ngokunemba njengengqikithi yayo, kuhlanganiswe nobuchwepheshe bokulawula obuhlakaniphile, idlule ngempumelelo emkhawulweni wokunemba ongu-0.01μrad futhi isetshenziswa kabanzi emikhakheni esezingeni eliphezulu njenge-photolithography, ukubuka kwezinkanyezi kanye nokulinganisa nge-laser, okukhuthaza ucwaningo kanye nokukhiqizwa kwama-optics anembile kakhulu kuya ekuphakameni okusha.
Isikhathi sokuthunyelwe: Meyi-23-2025