Plastiki zvinhu uye jekiseni molding ndiyo hwaro hweminiaturized lenses. Chimiro chepurasitiki lens chinosanganisira lens zvinhu, lens barrel, lens mount, spacer, shading sheet, pressure ring material, nezvimwe.

Kune akati wandei marudzi ezvishandiso zvemalenzi epurasitiki lenzi, ese ari epurasitiki (yakakwira molecular polymer). Iwo ma<em>thermoplastic, mapurasitiki anopfava ova epurasitiki kana adziyirwa, anoomesa kana atonhodzwa, uye anopfava kana apiswa zvakare. Shanduko yemuviri inoburitsa shanduko inodzoreka pakati pemvura uye yakasimba nyika uchishandisa kudziyisa nekutonhodza. Zvimwe zvinhu zvakagadzirwa kare uye zvimwe zvitsva. Mamwe mapurasitiki ekushandisa-chinangwa, uye zvimwe zvinhu zvinonyanya kugadzirwa optical plastiki zvinhu, izvo zvinonyanya kushandiswa mune mamwe minda yemaziso.

Mukugadzirwa kwemaziso, tinogona kuona mamakisi emakambani akasiyana siyana, akadai seEP8000, K26R, APL5015, OKP-1 zvichingodaro. Iwo ese ndeeimwe mhando yemidziyo yepurasitiki, uye anotevera marudzi akajairika, uye isu tichaarongedza zvichienderana nekuonekwa kwavo nguva:

Malenzi epurasitiki

• l PMMA/Akriliki:Poly (methyl methacrylate), polymethyl methacrylate (plexiglass, acrylic). Nekuda kwemutengo wayo wakachipa, kutapurirana kwepamusoro, uye kusimba kwemagetsi, PMMA ndiyo inonyanya kutsiva girazi muhupenyu. Mazhinji epurasitiki akajeka anogadzirwa nePMMA, senge mahwendefa akajeka, zvipunu zvinoonekera, uye ma LED madiki. lenzi nezvimwe. PMMA yakagadzirwa-zhinji kubva kuma1930s.
• PS:Polystyrene, polystyrene, haina ruvara uye yakajeka thermoplastic, pamwe nepurasitiki yeinjiniya, iyo yakatanga kugadzirwa kwakawanda muma1930s. Mazhinji emabhokisi efuro machena uye mabhokisi emasikati akajairika muhupenyu hwedu anogadzirwa nePS zvinhu.
• PC:Polycarbonate, polycarbonate, zvakare isina ruvara uye yakajeka amorphous thermoplastic, uye zvakare ipurasitiki-yechinangwa. Yakanga yakangogadzirwa muma1960s. Iko kupikisa kwemaitiro ePC zvinhu zvakanaka kwazvo, zvikumbiro zvakajairika zvinosanganisira mabhakiti emvura, magogi, nezvimwe.
• l COP & COC:Cyclic olefin Polymer (COP), Cyclic olefin polymer; Cyclic olefin copolymer (COC) Cyclic olefin copolymer, is amorphous transparent polymer material ine mhete, ine carbon-carbon double bond mumhete Ma cyclic hydrocarbons anogadzirwa kubva ku cyclic olefin monomers ne self-polymerization (COP) kana copolymerization (COC). ) nemamwe mamorekuru (akadai se ethylene). Hunhu hweCOP neCOC hwakada kufanana. Nyaya iyi ichangobuda. Payakatanga kugadzirwa, yainyanya kutariswa kune mamwe maapplication ane hukama. Iye zvino inoshandiswa zvakanyanya mufirimu, optical lens, kuratidza, mishonga (packaging bottle) maindasitiri. COP yakapedza kugadzirwa kwemaindasitiri kunosvika 1990, uye COC yakapedza kugadzirwa kwemaindasitiri pamberi pa2000.
• l O-PET:Optical polyester optical polyester fiber, O-PET yakatengeswa muOsaka muma2010.

Kana tichiongorora optical material, isu tinonyanya kunetseka nezvavo optical uye mechanical properties.

Optical pmidziyo

• Refractive Index & Dispersion

Refractive index uye kupararira

Zvinogona kuonekwa kubva muchidimbu ichi dhiyagiramu kuti akasiyana optical epurasitiki zvinhu zvinonyanya kuwira muzvikamu zviviri: rimwe boka rakakwirira refractive index uye yakakwirira dispersion; rimwe boka indekisi yakaderera refractive uye yakaderera dispersion. Tichienzanisa sarudzo yemhando yerefractive index uye kupararira kwegirazi zvinhu, tichaona kuti sarudzo yemhando yerefractive index yezvinhu zvepurasitiki yakamanikana, uye zvese zvemapurasitiki epurasitiki zvine indekisi yakaderera refractive index. Kazhinji kutaura, huwandu hwesarudzo dzemidziyo yepurasitiki idiki, uye kune chete gumi kusvika makumi maviri ezvekutengesa zvinhu mamakisi, ayo anonyanya kudzikamisa rusununguko rwekugadzira optical maererano nezvinhu.

Refractive index inosiyana newavelength: Iyo refractive index ye optical plastiki zvinhu inowedzera newavelength, iyo refractive index inoderera zvishoma, uye iyo yakazara inogadzikana.

Refractive index inoshanduka nekushisa Dn / DT: Chiyero chekushisa che refractive index ye optical plastics ndeye 6 nguva kusvika ku50 yakakura kudarika yegirazi, iyo inokosha yakaipa, iyo inoreva kuti sezvo kutonhora kunowedzera, refractive index inoderera. Semuenzaniso, kune wavelength ye546nm, -20 ° C kusvika 40 ° C, dn / dT kukosha kwezvinhu zvepurasitiki ndeye -8 kusvika -15X10 ^ -5 / ° C, asi zvakasiyana, kukosha kwezvinhu zvegirazi. NBK7 iri 3X10^–6/°C.

• Transmittance

The transmittance

Tichitaura nezvemufananidzo uyu, mapurasitiki akawanda eoptical ane transmittance inopfuura 90% mubhendi rinooneka; ivo zvakare vane yakanaka transmittance kune infrared mabhendi e850nm uye 940nm, ayo akajairika mumagetsi evatengi. Kufambiswa kwezvinhu zvepurasitiki kunodzikirawo kune imwe nhanho nekufamba kwenguva. Chikonzero chikuru ndechekuti purasitiki inobata mirazvo ye ultraviolet muzuva, uye cheni ye molecular inotsemuka kuti iparadze uye kuyambuka-link, zvichikonzera shanduko yemuviri nemakemikari zvinhu. Iyo inonyanya kuoneka macroscopic kuratidzwa ndeye yellowing yepurasitiki zvinhu.

• Stress Birefringence

Lens Refraction

Stress birefringence (Birefringence) inzvimbo yekuona yemidziyo. Iyo refractive index yezvishandiso ine hukama neiyo polarization mamiriro uye kuparadzira kutungamira kwechiitiko mwenje. Zvishandiso zvinoratidzira akasiyana indices erefraction kune akasiyana polarization nyika. Kune mamwe masisitimu, iyi refractive index deviation idiki kwazvo uye haina kukanganisa kukuru pahurongwa, asi kune mamwe masystem akakosha ekuona, kutsauka uku kwakakwana kukonzera kukanganiswa kwakanyanya kwekuita kwehurongwa.

Zvigadzirwa zvepurasitiki pachazvo hazvina anisotropic hunhu, asi jekiseni rekugadzira mapurasitiki rinounza kusagadzikana birefringence. Chikonzero chikuru kushushikana kwakaunzwa panguva yekuumbwa kwejekiseni uye kurongeka kwepurasitiki macromolecules mushure mekutonhora. Kushushikana kunowanzo kutariswa padyo nechiteshi chejekiseni, sezvakaratidzwa mumufananidzo uri pazasi.

Iyo yakajairwa dhizaini uye musimboti wekugadzira ndeyekudzikisa kushushikana kwebirefringence mundege inoshanda, iyo inoda dhizaini inonzwisisika yechimiro chelens, jekiseni mold mold uye maparamendi ekugadzira. Pakati pezvishandiso zvakati wandei, PC zvinhu zvinonyanya kunetsekana birefringence (inenge ka10 yakakura kupfuura PMMA zvinhu), uye COP, COC, uye PMMA zvinhu zvine yakaderera kushushikana birefringence.