Lo ntsiab muag yog tsim raws li txoj cai ntawm kev tshem tawm lub teeb. Lub lens yog cov khoom siv kho qhov muag uas ua los ntawm cov pob tshab zoo xws li iav, siv lead ua, lossis cov zoo li. Lo ntsiab muag yog qhov refractor uas nws qhov chaw zoo nkauj yog ob qhov chaw kheej kheej (qhov chaw kheej kheej), los sis thaj chaw kheej kheej (ib feem ntawm kheej kheej nto) ntawm lub cev pob tshab. Nws muaj cov duab tiag tiag thiab cov duab virtual. Cov lo ntsiab muag feem ntau tau muab faib ua ob hom dav: convex lo ntsiab muag thiab concave lo ntsiab muag. Lub hauv nruab nrab yog tuab tshaj qhov ntug ntu, uas yog hu ua lub khob convex, uas muaj peb hom convex, convex, convex thiab concave; lub hauv nruab nrab yog thinner dua li lub ntug qhov, uas yog hu ua concave lens, tiaj tiaj concave, convex thiab concave. Cov lenses LED feem ntau yog lub iav lo ntsiab muag, vim tias silicone tiv taus qhov kub thiab txias (thiab tseem tuaj yeem ua kom zoo), yog li nws feem ntau ntim ncaj qha rau ntawm cov LED nti. Feem ntau, cov iav lo ntsiab muag me me hauv daim duab thiab muaj txoj kab uas hla ntawm 3-10 hli. Thiab LED lo ntsiab muag feem ntau muaj feem xyuam nrog LED, uas pab txhim kho lub teeb pom kev zoo ntawm LED, thiab cov khoos phis tawm hluav taws xob LED teeb uas hloov lub tshav pob hluav taws xob faib ntawm LED, uas yog, ze rau LED, pab txhawm rau txhim kho lub teeb ci ntsa iab hloov ua haujlwm ntawm LED, Lub kaw lus kho qhov muag uas hloov pauv chaw tua hluav taws xob ntawm LED. Lub zog loj LED lens / tsom iav yog siv rau kev sau thiab coj teeb ntawm high-power LED txias lub teeb khoom. Lub siab-zog LED lens tsim lub teeb faib hluav taws xob nkhaus raws li lub kaum sab xis ntawm qhov sib txawv ntawm LED, thiab ua rau muaj kev cuam tshuam kho qhov muag kom txo lub teeb poob thiab txhim kho lub teeb ci (thiab teeb teeb tsa aspherical optical lens). Cov hauv qab no tsom mus rau theem nrab concentrating siab zog LED teeb ntawm PMMA cov khoom. a), los ntawm kev faib cov khoom
1, silicone lens a, vim tias silicone yog qhov kub tiv thaiv (tseem tuaj yeem ua kom zoo), yog li nws feem ntau ntim ncaj qha rau ntawm LED nti. b. Cov iav silicone dav dav yog me me hauv qhov ntim thiab muaj txoj kab uas hla ntawm 3-10 hli.
2, PMMA lens a, kho qhov muag qib PMMA (polymethyl methacrylate, feem ntau hu ua: acrylic). b, cov ntaub ntawv yas, qhov zoo: cov khoom lag luam ntau lawm (tuaj yeem ua tiav los ntawm kev txhaj tshuaj molding, extrusion); siab transmittance (93% nkag mus rau ntawm 3mm tuab); qhov tsis zoo: qhov kub tsis tuaj yeem siab tshaj 80 ° (qhov kub deformation kub 92 degrees).
3, PC lens a, kho qhov muag qib cov khoom siv Polycarbonate (xa mus rau PC) polycarbonate. b. Cov ntaub ntawv yas, qhov zoo: cov khoom lag luam ntau lawm (tuaj yeem ua tiav los ntawm kev txhaj tshuaj molding, extrusion); lub teeb xa hluav taws xob hloov qis dua me ntsis (qhov sib nkag tau yog li ntawm 89% ntawm 3 hli tuab); qhov tsis zoo: qhov ntsuas kub tsis tuaj yeem tshaj 110 ° (qhov kub tsis txaus distortion 135) degree).
4, iav tsom iav kho qhov muag cov khoom iav, qhov zoo: qhov sib kis siab tshaj (97% nkag mus rau ntawm 3mm tuab), siab kub ua hauj; qhov tsis zoo: cov ntim loj, lub cev nyhav, cov qauv zoo ib yam, tsis yooj yim, cov khoom lag luam loj yog qhov nyuaj kom ua tiav, kev tsim khoom qis, kev siv nyiaj siab, thiab lwm yam. Cov.
Tsis tas li ntawd, qhov tsis zoo ntawm iav piv rau PMMA thiab PC cov ntaub ntawv muaj kev puas yooj yim dua, thiab yuav tsum muaj kev tshawb fawb ntau dua thiab kev tshawb nrhiav. Hauv cov txheej txheem txhim kho uas tuaj yeem pom tau tam sim no, cov yam ntxwv tsis zoo-tsis yooj yim ntawm lub iav tsuas yog tuaj yeem txhim kho los ntawm txheej txheej lossis kho mob, txawm hais tias tom qab cov kev kho mob no hloov pauv ntawm lub khob iav yuav raug txo, tab sis nws tseem yuav loj dua uas ntawm qhov zoo tib yam kho qhov muag yas lens. Yog li qhov kev cia siab ntawm cov iav lo ntsiab muag yuav tseem dav dua.
