Kodi nsanja ya granite optical ingapeze bwanji kukhazikika kwa angular kwa 0.01μrad?

Mu ntchito zoyesera zolondola kwambiri komanso kupanga zinthu zapamwamba kwambiri, kukhazikika kwa angular pamlingo wa 0.01μrad ndi chizindikiro chofunikira. Mapulatifomu a granite optical, okhala ndi zinthu zawo komanso mgwirizano waukadaulo, akhala chonyamulira chachikulu chokwaniritsa kulondola kwambiri.

Ubwino wa zipangizo umakhazikitsa maziko olimba. Granite, monga mwala wa igneous womwe umapangidwa ndi geology kwa zaka mazana ambiri, imadziwika chifukwa cha kuchuluka kwake kochepa kwambiri kwa kutentha, komwe ndi theka lokha la chitsulo ndi gawo limodzi mwa magawo anayi la aluminiyamu. Kutentha kukasintha ndi 1℃, gawo la granite la mita imodzi lalitali limakula ndi ma micrometer 6 okha, pomwe gawo la aluminiyamu limakula ndi ma micrometer 23. Izi zimapewa kupatuka kwa angular komwe kumachitika chifukwa cha kusintha kwa kutentha. Pakadali pano, magwiridwe ake abwino kwambiri oletsa kugwedezeka amatha kuchepetsa kugwedezeka kwakunja mwachangu, kusunga nsanjayo kukhala yosasunthika ndikuchepetsa kusokonezeka ndi zigawo za kuwala.

Kapangidwe kolondola ka kapangidwe kake kamawonjezera kulimba. Pulatifomu ya granite optical, pambuyo pa kapangidwe ka makina okonzedwa bwino, yawonjezera kulimba kwake ndipo imatha kukana kusintha kwa katundu. Kulondola kwake pokonza pamwamba kumafika pamlingo wapamwamba kwambiri mumakampani. Potengera kulondola kwa 00-level komwe kumakwaniritsa muyezo wa GB4987-85 mwachitsanzo, kulekerera kwa flatness ndi 2×(1 + d/1000)μm (d ndi kutalika kopingasa), komwe kumapereka chizindikiro chokhazikika kwambiri cha zida zowunikira.

Kulinganiza kwamphamvu kumachitika kudzera mu mgwirizano waukadaulo. Ikakhala ndi makina apamwamba odzipatula ogwedezeka monga ma air springs kapena maginito levitation, nsanja ya granite imatha kusiyanitsa kugwedezeka kwa ma frequency otsika komanso okwera. Powonjezeredwa ndi zida zoyezera zolondola kwambiri monga laser interferometers, kusintha kwa Angle kumayang'aniridwa nthawi yeniyeni. Kupatuka kukapitirira malire a 0.01μrad, makina owongolera mayankho nthawi yomweyo amayendetsa njira yowongolera bwino kuti atsimikizire kuti nsanjayo nthawi zonse imakhala yolondola kwambiri komanso yokhazikika.

Kuyambira pa mfundo yaikulu ya zinthuzo mpaka mphamvu yaukadaulo, nsanja ya granite optical, yokhala ndi kukhazikika kwa kutentha, kukana kugwedezeka ndi ubwino wokonza molondola monga maziko ake, kuphatikiza ndi ukadaulo wanzeru wowongolera, yadutsa bwino malire olondola a 0.01μrad ndipo imagwiritsidwa ntchito kwambiri m'magawo apamwamba monga photolithography, kuwona zakuthambo ndi kuyeza kwa laser, kulimbikitsa kafukufuku ndi kupanga ma optics olondola kwambiri kufika pamlingo watsopano.