Optical Coating

Optical Coating

An optical coating idanho rakatetepa kana zvidimbu zvezvinhu zvakaiswa pane optical element, senge lenzi kana girazi, inoshandura nzira iyo iyo optical element inoratidza uye kutumira chiedza.Imwe yemhando ye optical coating ndeye anti-reflective coating, iyo inoderedza zvisingadiwi kuratidzwa kubva kumusoro, inowanzoshandiswa pamagirazi emaziso uye kamera lenses.Imwe mhando ndeye yakanyanyisa kuratidzira, iyo inogona kushandiswa kugadzira magirazi anoratidza kupfuura 99.99% yechiedza.Zvimwe zvakaomesesa zvekupfeka zvemaziso zvinoratidza kutarisisa kwepamusoro pane mamwe wavelengths uye antireflection pamarenji akareba anobvumira kugadzirwa kwe dichroic nhete-firimu mafirita.

Coating Type

Reflection vs. Wavelength Curves at Normal Incidence for Aluminium (Al), Silver (Ag), uye Gold (Au) Metal Mirrors

Iwo akareruka optical coatings akatetepa simbi akaturikidzana, senge aruminiyamu, anoiswa pagirazi substrate kuumba girazi pamusoro, maitiro anonzi silvering.Simbi inoshandiswa inosarudza girazi rinoratidzira zvinhu;aruminiyamu ndiyo yakachipa yakachipa uye yakajairika coating, ichipa inokwana 88% -92% kuratidza mune inooneka spectrum.Kunyanya kudhura isirivha, iyo ine 95% -99% reflectance kunyange mu infrared kure, asi yakaderedza reflectance (<90%) munzvimbo yebhuruu uye ultraviolet spectral.Iyo inodhura zvakanyanya igoridhe, iyo yakazara infrared.Inopa zvakanakisa (98% -99%) kuratidza, asi kushoma kuratidza pamawavelengths isingasviki 550 nm, zvichikonzera ruvara rwegoridhe rwakasiyana.

Nekudzora ukobvu uye kuwanda kwesimbi yekuputira, kuratidza kunogona kuderedzwa uye kufambiswa kwepamusoro kunowedzera, zvichikonzera hafu-sirivheri girazi.Aya dzimwe nguva anoshandiswa se "nzira imwe chete magirazi".

Imwe mhando huru yeoptical coating ndeye dielectric coating (kureva, kushandiswa kwezvinhu zvine ma indices akasiyana erefractive se substrate).Iwo ane akatetepa akaturikidzana emidziyo, senge magnesium fluoride, calcium fluoride, uye akasiyana simbi oxides, ayo anoiswa pane optical substrates.Nekunyatsosarudza iyo chaiyo kuumbwa, ukobvu uye nhamba yeaya maturu, iyo inotaridza uye transmittance yejasi inogona kugadziridzwa kuti ibudise chero chinhu chaunoda.Iyo inoratidzira coefficient yepasi inogona kuderedzwa pazasi 0.2%, zvichikonzera anti-reflective (AR) coating.Kusiyana neizvi, nepamusoro-reflection (HR) machira, iyo reflectivity inogona kuwedzerwa kusvika kupfuura 99.99%.Chiyero chekuratidzira chinogonawo kugadziridzwa kune chaiyo kukosha, semuenzaniso, kugadzira girazi rinoratidza 90% mune mamwe wavelength siyana uye inotumira 10% yechiedza chinowira pairi.Magirazi akadaro anowanzo shandiswa sezvinobuda couplers mune danda splitters uye lasers.Neimwe nzira, iyo yekupfeka inogona kugadzirwa kuitira kuti girazi riratidze chete rakamanikana bhendi rewavelengths, richigadzira optical sefa.

Iko kushandiswa kwakasiyana-siyana kwedielectric coatings kwakonzera kushandiswa kwavo mune dzakawanda zvesainzi optical zviridzwa senge lasers, optical microscopes, refractor telescopes, uye interferometers, pamwe nemidziyo yevatengi yakadai sebinoculars, magirazi emaziso, uye mafoto lenzi.

Dielectric layers dzimwe nguva inoshandiswa pamusoro pemafirimu esimbi kuti ipe chidziviriro (senge silicon dioxide paaluminium), kana kuwedzera kutaridzika kwefirimu resimbi.Metal uye dielectric musanganiswa anoshandiswawo kugadzira machira epamusoro asingagone kugadzirwa chero imwe nzira.Muenzaniso nderinodaidzwa kuti "girazi rakakwana", iro rinoratidza kutarisisa kwepamusoro (asi kusina kukwana) nekunzwa kuderera kusingaite kune wavelength, kona, uye polarization.