1. Lens ya PC ndi chiyani?
PC ndikuchita bwino kwa mapulasitiki a uinjiniya wa thermoplastic, ndi mapulasitiki asanu aumisiri mkati mwa kuwonekera bwino kwa chinthucho, komanso m'zaka zaposachedwa kukula kwachangu kwa mapulasitiki aukadaulo wamba.Pakali pano, amagwiritsidwa ntchito kwambiri mu optics, zamagetsi, zomangamanga, magalimoto, zaumoyo ndi zina, makamaka popanga magalasi a maso.

2. N’chifukwa chiyani amatchedwa magalasi a mlengalenga?
POLYCARBONATE(PC) ndi zinthu zopangidwa ndi asayansi kuti apange zida zowunikira zakuthambo kuti zigwirizane ndi malo apadera amlengalenga, motero amadziwika kuti ma lens amlengalenga.

3. Ubwino wake ndi chiyani?
Zinthu za PC zili ndi ubwino wowonjezera-woonda kwambiri, wowala kwambiri, kukana kugunda kwakukulu, chitetezo cha UV ndi kuwala kwabwino, chimagwiritsidwa ntchito kwambiri muzinthu zamakono zamapulasitiki, zimakhala zokhazikika komanso zopanda magetsi, choncho mawonekedwewa ndi otakasuka kwambiri, ndipo amapangidwa ndi magalasi a PC omwe ali ndi ubwino pamwambapa, makamaka oyenerera chiwerengero chapamwamba, amavala tcheru ku magalasi aang'ono a zaka zapakati pa anthu achikulire ku United States. 3 ayenera kuvala magalasi a PC.
Magalasi a utomoni wamba ndi zinthu zolimba zotentha, ndiye kuti, zopangira zake ndi zamadzimadzi, zimatenthedwa kupanga magalasi olimba.Chidutswa cha PC ndi zinthu za thermoplastic, ndiye kuti, zopangirazo zimakhala zolimba, zikatenthedwa, zimapangidwira ma disolo, kotero kuti mandalawa azikhala ndi mapindikidwe otenthedwa, osayenerera chinyezi chambiri komanso nthawi zotentha.Lens ya PC imakhala yolimba kwambiri, yosasweka (2cm itha kugwiritsidwa ntchito ngati galasi loletsa zipolopolo), motero amatchedwanso mandala achitetezo.Kukoka kwapadera kumangokhala 2 magalamu pa cubic centimita imodzi, zomwe zimapangitsa kuti ikhale yopepuka kwambiri yomwe imagwiritsidwa ntchito pamagalasi.Wopanga ma lens a PC ndiye Esilu wotsogola padziko lonse lapansi, zabwino zake zimawonekera mu chithandizo cha lens aspheric komanso kuumitsa chithandizo.
Ma lens apa PC amapangidwa ndi ma lens a polycarbonate, ndipo ma lens wamba (CR-39) ali ndi kusiyana kofunikira!PC amadziwika kuti galasi zipolopolo, kotero magalasi PC kutsatira makhalidwe abwino a zipangizo wapamwamba kukana mphamvu, ndipo chifukwa mkulu refractive index ndi kulemera kuwala, kuchepetsa kwambiri kulemera kwa mandala, pali ubwino zambiri monga: 100% UV chitetezo, 3-5 zaka sadzakhala chikasu.Ngati palibe vuto pochita izi, kulemera kwake ndi 37% kupepuka kuposa pepala wamba la utomoni, ndipo kukana kwamphamvu kumafika nthawi 12 za utomoni wamba!

4. Mbiri yamagalasi a PC
Mu 1957,
Kampani yaku America GE(General Electric) idatsogola pakupanga pulasitiki ya PC(polycarbonate), ndikutcha Lexan.Kampani yaku Germany Bayer idatsata ndi pulasitiki yawo ya PC Makrolen.
M'zaka za m'ma 1960
Zaka za zana lachiwiri zinatha.PPG idasintha zida za CR-39 kuchokera ku gulu lankhondo kupanga magalasi kuti azigwiritsidwa ntchito wamba.
M'zaka za m'ma 1970
Kumayambiriro kwa zaka za m'ma 1970, odwala anayamba kulandira magalasi a CR-39.
Mu 1973,
85% magalasi agalasi ndi 15% CR-39 magalasi.
Mu 1978,
Pogwiritsa ntchito ntchito zankhondo ndi zakuthambo, Gentex anayamba kugwiritsa ntchito PC kupanga magalasi otetezera.
Mu 1979,
M'mayiko otukuka, zinthu za lens zimasinthidwa kuchoka pagalasi kupita ku CR-39 resin.Kuthetsa ulamuliro wazaka pafupifupi 600 wa mandala agalasi.
Mu 1985,
Vision-Ease Lenses Inc. idayambitsa kuyambitsa magalasi a PC.
Mu 1991,
Transitions, Inc. imatulutsa m'badwo woyamba wa magalasi osintha mitundu.
Mu 1994,
Ma lens a PC amakhala 10% pamsika waku US.
Mu 1995,
The polarizing PC lens anabadwa.
Mu 2002,
Ma lens a PC amakhala 35% pamsika waku US, pomwe magalasi amagalasi amakhala osakwana 3%