1) Taw qhia rau Infrared Optics
Infrared Optics yog siv los sau, ua kom pom tseeb lossis sib txuas lub teeb nyob rau hauv lub wavelength ntawm 760 thiab 14,000 nm. Qhov no ntawm IR hluav taws xob tau muab faib ua plaub qhov sib txawv spectral:
| Nyob ze Infrared Range (NIR) | 700-900 nm |
| Short-Wave Infrared ntau yam (SWIR) | 900-2300 nm |
| Mid-Wave Infrared Range (MWIR) | 3000-5000 nm |
| Ntev-Wave Infrared Range (LWIR) | 8000-14000 nm |
2) Short-Wave Infrared (SWIR)
SWIR daim ntaub ntawv npog qhov ntau ntawm 900 txog 2300 nm. Tsis zoo li MWIR thiab LWIR lub teeb uas tawm ntawm qhov khoom nws tus kheej, SWIR zoo li pom lub teeb hauv qhov kev nkag siab tias photons tau cuam tshuam los yog nqus los ntawm ib qho khoom, yog li muab qhov sib txawv tsim nyog rau kev daws teeb meem siab. Lub teeb pom kev zoo xws li ambient pib lub teeb thiab keeb kwm yav dhau radiance (aka nightglow) yog cov emitters ntawm SWIR thiab xa cov teeb pom kev zoo rau sab nraum zoov thaum hmo ntuj.
Ntau daim ntawv thov uas muaj teeb meem lossis tsis tuaj yeem ua tau siv lub teeb pom kev zoo yog siv tau SWIR. Thaum ua duab hauv SWIR, dej vapor, hluav taws kub hnyiab, pos huab, thiab qee yam khoom xws li silicon yog pob tshab. Tsis tas li ntawd, cov xim uas tshwm sim yuav luag zoo tib yam hauv qhov pom yuav yooj yim sib txawv siv SWIR.
SWIR imaging yog siv rau ntau lub hom phiaj xws li lub rooj tsavxwm hluav taws xob thiab kev tshuaj xyuas lub hnub ci, tsim kev tshuaj xyuas, txheeb xyuas thiab txheeb xyuas, kev soj ntsuam, kev tiv thaiv cuav, kev tswj xyuas cov txheej txheem thiab lwm yam.
3) Mid-Wave Infrared (MWIR)
MWIR systems ua haujlwm hauv 3 txog 5 micron ntau yam. Thaum txiav txim siab ntawm MWIR thiab LWIR systems, ib tug yuav tsum coj ntau yam rau hauv tus account. Ua ntej, lub hauv paus atmospheric constituent xws li av noo thiab pos huab yuav tsum raug xam tias yog. MWIR systems tsis tshua muaj kev cuam tshuam los ntawm cov av noo dua LWIR systems, yog li lawv zoo tshaj rau cov ntawv thov xws li kev soj ntsuam ntawm ntug dej hiav txwv, kev soj ntsuam hauv nkoj lossis kev tiv thaiv chaw nres nkoj.
MWIR muaj ntau dua atmospheric kis tshaj LWIR nyob rau hauv feem ntau huab cua. Yog li ntawd, MWIR feem ntau yog qhov zoo dua rau cov ntawv thov kev soj ntsuam ntev ntev tshaj li 10 km deb ntawm cov khoom.
Ntxiv mus, MWIR kuj yog ib qho kev xaiv zoo dua yog tias koj xav ntes cov khoom kub xws li tsheb, dav hlau lossis cuaj luaj. Nyob rau hauv daim duab hauv qab no ib tug tuaj yeem pom tias cov pa taws kub hnyiab tau pom ntau dua hauv MWIR dua li hauv LWIR.
4) Ntev-yoj Infrared (LWIR)
LWIR systems ua haujlwm nyob rau hauv 8 txog 14 micron ntau yam. Lawv nyiam rau cov ntawv thov nrog cov khoom nyob ze ntawm chav tsev kub. LWIR koob yees duab tsis tshua muaj kev cuam tshuam los ntawm lub hnub thiab yog li zoo dua rau kev ua haujlwm sab nraum zoov. Lawv feem ntau uncooled systems siv Focal Plane Array microbolometers, txawm hais tias txias LWIR koob yees duab kuj muaj thiab lawv siv Mercury Cadmium Tellurium (MCT) detectors. Hauv qhov sib piv, feem ntau ntawm MWIR koob yees duab yuav tsum tau ua kom txias, siv cov kua nitrogen los yog Stirling lub voj voog txias.
LWIR systems pom muaj ntau yam kev siv xws li kev tshuaj xyuas lub tsev thiab kev tsim kho vaj tse, kev kuaj xyuas qhov tsis xws luag, kuaj roj thiab lwm yam. LWIR cov koob yees duab tau ua lub luag haujlwm tseem ceeb thaum lub sijhawm COVID-19 kis thoob qhov txhia chaw vim lawv tso cai rau ntsuas ntsuas lub cev ceev thiab raug.
5) IR Substrates Xaiv Phau Ntawv Qhia
IR cov ntaub ntawv muaj cov khoom sib txawv uas tso cai rau lawv ua tau zoo nyob rau hauv infrared spectrum. IR Fused Silica, Germanium, Silicon, Sapphire, thiab Zinc Sulfide / Selenide, txhua tus muaj zog rau kev siv infrared.
Zinc Selenide (ZnSe)
Zinc selenide yog lub teeb daj, cov khoom sib xyaw uas muaj zinc thiab selenium. Nws yog tsim los ntawm synthesis ntawm Zinc vapor thiab H2 Se gas, ua raws li cov nplooj ntawv ntawm graphite substrate. Nws yog lub npe hu rau nws tus nqi qis thiab uas tso cai rau kev siv zoo rau CO2 lasers.
| Optimum Transmission Range | Ideal Applications |
| 0.6 - 16 m | CO2 lasers thiab thermometry thiab spectroscopy, lo ntsiab muag, qhov rais, thiab FLIR systems |
Germanium (zeeg)
Germanium muaj qhov tsaus grey smoky zoo li nrog lub ntsej muag refractive ntawm 4.024 nrog qhov muag tsis pom kev tawg. Nws muaj qhov ntom ntom ntom ntom nrog Knoop Hardness (kg / mm2): 780.00 tso cai rau nws ua tau zoo rau thaj chaw kho qhov muag hauv cov xwm txheej rugged.
| Optimum Transmission Range | Ideal Applications |
| 2-16 m² | LWIR - MWIR Thermal imaging (thaum AR coated), rugged optical xwm txheej |
Silicon (S)
Silicon muaj xiav-grey tsos nrog lub siab thermal muaj peev xwm ua rau nws zoo tagnrho rau laser iav thiab silicon wafers rau kev lag luam semiconductor. Nws muaj qhov cuam tshuam qhov ntsuas ntawm 3.42. Silicon Cheebtsam yog siv nyob rau hauv cov khoom siv hluav taws xob yog vim nws cov hluav taws xob tam sim no tuaj yeem dhau ntawm silicon conductors sai dua piv rau lwm cov conductors, nws tsis ntom dua Ge lossis ZnSe. AR txheej yog pom zoo rau feem ntau daim ntawv thov.
| Optimum Transmission Range | Ideal Applications |
| 1.2-8 m | MWIR, NIR imaging, IR spectroscopy, MWIR detection systems |
Zinc sulfide (ZnS)
Zinc Sulfide yog ib qho kev xaiv zoo tshaj plaws rau infrared sensors nws kis tau zoo nyob rau hauv IR thiab pom spectrum. Nws feem ntau yog ib qho kev xaiv zoo dua lwm cov ntaub ntawv IR.
| Optimum Transmission Range | Ideal Applications |
| 0.6-18 hli | LWIR - MWIR, pom thiab nruab nrab-yoj lossis ntev-yoj infrared sensors |
Koj qhov kev xaiv ntawm substrate thiab anti-reflection txheej yuav nyob ntawm seb qhov wavelength xav tau kev xa tawm hauv koj daim ntawv thov. Piv txwv li, yog tias koj tab tom xa IR teeb hauv MWIR ntau, germanium yuav yog qhov kev xaiv zoo. Rau NIR daim ntawv thov, sapphire tej zaum yuav zoo tagnrho.
Lwm cov kev qhia tshwj xeeb uas koj xav tau los txiav txim siab hauv koj qhov kev xaiv ntawm infrared optics muaj xws li thermal zog thiab qhov ntsuas ntawm refraction. Cov khoom siv thermal ntawm lub substrate kom paub meej tias nws yuav ua li cas rau cua sov. Feem ntau, cov khoom siv kho qhov muag infrared yuav raug rau qhov kub thiab txias. Qee daim ntawv thov IR kuj tsim kom muaj cua sov ntau. Txhawm rau txiav txim siab seb IR substrate puas tsim nyog rau koj daim ntawv thov koj yuav xav tshuaj xyuas qhov ntsuas gradient thiab coefficient ntawm thermal expansion (CTE). Yog hais tias ib tug muab substrate muaj ib tug siab Performance index gradient, nws yuav muaj suboptimal optical kev ua tau zoo thaum siv nyob rau hauv ib tug thermally volatile chaw. Yog tias nws muaj CTE siab, nws yuav nthuav tawm lossis cog lus ntawm tus nqi siab uas tau txais qhov hloov pauv loj hauv qhov kub thiab txias. Cov ntaub ntawv feem ntau siv nyob rau hauv infrared optics sib txawv nyob rau hauv qhov Performance index ntawm refraction. Germanium, piv txwv li, muaj qhov Performance index ntawm refraction ntawm 4.0003, piv nrog 1.413 rau MgF. Qhov muaj ntawm cov substrates nrog ntau qhov ntsuas ntawm qhov ntsuas ntawm refraction muab ntxiv yooj rau hauv kev tsim qauv. Lub dispersion ntawm ib qho khoom siv IR ntsuas qhov kev hloov pauv ntawm qhov ntsuas ntawm lub wavelength nrog rau lub wavelength nrog rau cov chromatic aberration, los yog kev sib cais ntawm wavelength. Dispersion yog quantified, inversely, nrog tus naj npawb Abbe, uas yog txhais raws li qhov piv ntawm qhov refractive index ntawm d wavelength rho tawm 1, tshaj qhov txawv ntawm qhov Performance index ntawm refraction ntawm f thiab c kab. Yog tias lub substrate muaj tus naj npawb Abbe ntau dua 55, nws tsis tshua muaj kev sib cais thiab peb hu nws cov khoom siv yas. Ntau dispersive substrates nrog Abbe tus lej qis dua 55 yog hu ua flint cov ntaub ntawv.
Infrared Optics Applications
Infrared optics muaj cov ntawv thov hauv ntau qhov chaw, los ntawm lub zog siab CO2 lasers, uas ua haujlwm ntawm 10.6 μm, mus rau hmo ntuj pom kev thermal imaging koob yees duab (MWIR thiab LWIR bands) thiab IR duab. Lawv kuj tseem ceeb hauv spectroscopy, vim tias cov kev hloov pauv siv los txheeb xyuas ntau cov kab hluav taws xob nyob hauv nruab nrab thaj tsam infrared. Peb tsim laser kab optics thiab infrared Cheebtsam uas ua tau zoo nyob rau hauv ib tug dav wavelength ntau yam, thiab peb cov neeg ua hauj lwm muaj peev xwm muab tag nrho cov tsim kev pab txhawb nqa thiab kev sab laj.
Paralight Optics yog siv ntau yam kev ua haujlwm siab heev xws li Tib Point Pob Zeb Diamond tig thiab CNC polishing los tsim cov khoom siv kho qhov muag zoo tshaj plaws los ntawm Silicon, Germanium thiab Zinc Sulfide uas pom cov ntawv thov hauv MWIR thiab LWIR koob yees duab. Peb muaj peev xwm ua tiav qhov tseeb ntawm tsawg dua 0.5 fringes PV thiab roughness nyob rau hauv thaj tsam ntawm tsawg dua 10 nm.
Yog xav paub ntxiv nyob rau hauv-tob specification, thov mus saib pebcatalog opticslos yog xav tiv tauj peb kom paub ntau ntxiv.
Post lub sij hawm: Apr-25-2023
