Magalasi owoneka ndi okhuthala komanso ochepa; Magalasi a Fresnel ndi ochepa komanso akulu akulu.
Fresnel lens mfundo ndi katswiri wa sayansi ya ku France Augustine. Anapangidwa ndi AugustinFresnel, amene anasintha magalasi ozungulira ndi aspherical kukhala kuwala ndi woonda planar mawonekedwe mandala kuti akwaniritse mawonekedwe ofanana kuwala. Kenaka, magulu ochuluka a kuwala adakonzedwa pamtunda wopangidwa ndi ndondomeko yowonjezereka kwambiri, ndipo gulu lirilonse limasewera gawo la lens lodziimira. Fresnel lens ndiye njira yabwino kwambiri yodziwira lens yayikulu, yosalala komanso yopyapyala.
Kupanga magalasi a Feist Fresnel, makamaka magalasi akulu akulu, kumaphatikizapo kayeseleledwe ka mawonekedwe, ukadaulo wopangidwa mwaluso kwambiri, zida za polima ndi njira yopangira molondola. Magalasi a Fresnel amatha kugwiritsidwa ntchito kwambiri pakuwunikira, kuyenda, kafukufuku wasayansi ndi zina.
Fresnel lens ndi mawonekedwe a mbale yathyathyathya omwe amawunikira ndikuyika cheza. Pogwiritsa ntchito mfundo imeneyi ndi luso splicing, tingathe kusintha paraboloid, ellipsoid ndi apamwamba pamwamba kuwala mandala a kabowo aliyense mu ndege mawonekedwe, kuti tizindikire splicing Fresnel mandala kukula kulikonse, ndi kufufuza ntchito danga mphamvu dzuwa ndi giant reflector (monga monga guizhou Tianyan 500-mita pobowo wailesi telesikopu).
Tekinoloje yopanda malire ya Mose ya mandala a Fresnel imatha kugwiritsidwa ntchito kuchokera pamamita angapo, mpaka mazana a mita, mpaka kukula kulikonse. Guizhou Tianjia parabolic reflection pamwamba ndi m'mimba mwake wa mamita 500 angagwiritse ntchito luso Mose kutsanzira parabolic pamwamba ndi lathyathyathya Fresnel mandala, amene amachepetsa zovuta processing ndi zosavuta kukhazikitsa ndi kusintha.
Nthawi yotumiza: Dec-24-2021
