Sohle seo u hlokang ho se tseba mabapi le nako e fetileng, ea hajoale le ea bokamoso ba stereolithography

Vat photopolymerization, haholo-holo laser stereolithography kapa SL/SLA, e bile theknoloji ea pele ea khatiso ea 3D 'marakeng. Chuck Hull o ile a e qapa ka 1984, a e fa tokelo ea molao ka 1986, 'me a theha 3D Systems. Ts'ebetso e sebelisa lebone la laser ho etsa polymerize sesebelisoa sa photoactive monomer ka vat. Likarolo tsa photopolymerized (phekotsoe) li khomarela poleiti ea mohaho e eang holimo kapa tlaase ho itšetlehile ka hardware, e lumellang likarolo tse latellanang ho theha. Sistimi ea SLA le eona e ka hlahisa likarolo tse nyane haholo le tse nepahetseng li sebelisa bophara bo bonyenyane ba laser, ts'ebetsong e tsejoang ka hore ke SLA e nyane kapa µSLA. Li ka boela tsa hlahisa likarolo tse kholo haholo li sebelisa bophara bo boholoanyane ba sepakapaka le linako tse telele tsa tlhahiso, ka har'a li-volumes tsa kaho tse fetang li-cubic metres tse peli.

Mochine oa khatiso oa SLA-1 Stereolithography (SLA), mochine oa pele oa khoebo oa 3D, o ile oa hlahisoa ke 3D Systems ka 1987.

Ho na le mefuta e mengata ea theknoloji ea vat photopolymerization e fumanehang kajeno. Ea pele e ileng ea hlaha ka mor'a SLA e ne e le DLP (Digital Light Processing), e entsoeng ke Texas Instruments 'me ea tlisoa 'marakeng ka 1987. Ho e-na le ho sebelisa lebone la laser bakeng sa photopolymerization, theknoloji ea DLP e sebelisa mochine oa leseli la digital (o tšoanang le mochine o tloaelehileng oa TV). Sena se etsa hore e be kapele ho feta SLA, kaha e ka etsa photopolymerize lera kaofela la ntho hang-hang (e bitsoang "planar"). Leha ho le joalo, boleng ba likarolo bo itšetlehile ka qeto ea projector le ho fokotseha ha boholo bo ntse bo eketseha.

Joalo ka extrusion ea lintho tse bonahalang, stereolithography e ile ea fumaneha haholoanyane ka ho fumaneha ha lits'ebetso tse theko e tlase. Mekhoa ea pele ea theko e tlaase e ne e itšetlehile ka mekhoa ea pele ea SLA le DLP. Leha ho le joalo, lilemong tsa morao tjena, ho hlahile moloko o mocha oa lisebelisoa tse theko e tlaase haholo, tse thehiloeng mehloling ea leseli la LED / LCD. Phetoho e latelang ea vat photopolymerization e tsejoa e le "continuous" kapa "layerless" photopolymerization, eo hangata e thehiloeng ho moralo oa DLP. Ts'ebetso tsena li sebelisa lera, hangata oksijene, ho etsa hore litefiso tsa tlhahiso e potlakileng le tse tsoelang pele. Patent ea mofuta ona oa stereolithography e qalile ho ngolisoa ka 2006 ke EnvisionTEC, k'hamphani ea DLP e seng e rehiloe lebitso la ETEC, kamora ho nkuoa ha eona ke Desktop Metal. Leha ho le joalo, Carbon, k'hamphani e thehiloeng ho Silicon Valley, e bile eona ea pele ea ho rekisa theknoloji ena ka 2016 'me e se e itlhomme pele e le moetapele' marakeng. Theknoloji ea Carbon, e tsejoang ka hore ke DLS (Digital Light Synthesis), e fana ka litekanyetso tse phahameng haholo tsa tlhahiso le bokhoni ba ho hlahisa likarolo tse nang le lisebelisoa tse tšoarellang tsa lebasetere, tse kopanyang li-thermoset le li-photopolymers. Lik'hamphani tse ling, tse kang 3D Systems (Figure 4), Origin (eo hona joale e leng karolo ea Stratasys), LuxCreo, Carima, le ba bang, le bona ba hlahisitse theknoloji e tšoanang 'marakeng.