Multi-band tub ceev xwm teeb qhov system
Cov qauv yooj yim thiab lub hauv paus ntsiab lus ntawm ntau lub teeb pom kev zoo
Lub teeb ci ntau lub teeb yog ib qho khoom siv kho qhov muag uas faib cov teeb dawb tawm los ntawm lub teeb ci mus rau hauv cov kab sib txawv los ntawm ib lossis ob pawg ntawm cov xim lim dej, thiab tom qab ntawd tso tawm los ntawm kev qhia lub teeb.Nws tsuas yog muaj tsib ntu: lub teeb ci, lim system, tso zis system, tswj cov khoom siv, thiab txee.(Saib daim duab 1 rau cov qauv).Ntawm lawv, lub teeb ci, lim dej, thiab cov khoom tso tawm yog qhov tseem ceeb ntawm ntau lub teeb ci, uas txiav txim siab qhov ua tau zoo ntawm lub teeb ci.Lub teeb ci feem ntau siv xenon teeb, indium teeb lossis lwm yam hlau halide teeb nrog kev ua haujlwm siab luminous.Cov lim dej feem ntau yog hais txog cov xim lim dej, muaj cov xim zoo tib yam coated xim lim lossis cov khoom zoo band-pass cuam tshuam xim lim.Qhov kev ua tau zoo ntawm qhov tom kawg yog qhov zoo dua li qhov qub, uas feem ntau txo qhov kev txiav tawm bandwidth ntawm cov xim xim, uas yog, lub monochromaticity ntawm cov xim xim tau zoo tuaj.Qhov ib txwm tso zis wavelength kev pab them nqi yog 350 ~ 1000nm, nrog rau feem ntau ntawm cov spectral kab nyob rau hauv lub ntev-yoj ultraviolet, pom lub teeb thiab ze-infrared cheeb tsam.
Kev siv lub hauv paus ntsiab lus ntawm multi-band teeb qhov chaw
1. Fluorescence thiab multi-band teeb qhov chaw
Thaum cov hluav taws xob extranuclear zoo siab thiab dhia mus rau lub xeev zoo siab, cov hluav taws xob hauv lub xeev zoo siab tsis ruaj khov thiab ib txwm dhia rov qab mus rau hauv av nrog lub zog qis dua.Thaum lub sij hawm dhia, lub zog tau txais yuav raug tso tawm nyob rau hauv daim ntawv ntawm photons..Qhov tshwm sim uas ib yam khoom zoo siab rau lub xeev zoo siab tom qab raug irradiated los ntawm ib tug photon ntawm ib tug tej yam wavelength, thiab ces dhia rov qab mus rau ib tug qis zog theem los ntawm tso tawm ib tug photon ntawm lwm yam wavelength.
Nws yog hu ua photoluminescence tshwm sim, thiab lub neej photon feem ntau tso tawm tsawg dua 0.000001 thib ob, uas yog hu ua fluorescence;nruab nrab ntawm 0.0001 thiab 0.1 thib ob, nws yog hu ua phosphorescence.Yog hais tias ib yam khoom muaj peev xwm ua rau nws tus kheej excite thiab tsim fluorescence yam tsis muaj lwm lub teeb excitation, nws tau hais tias cov khoom muaj fluorescence intrinsic.Lwm qhov teeb meem ntawm fluorescence yog los tsim lub teeb tsis muaj wavelengths sib txawv los ntawm cov thawj lub teeb nthwv dej (feem ntau yog luv-yoj excitations los tsim cov nthwv dej ntev) nyob rau hauv lub excitation ntawm ib tug sab nraud lub teeb qhov chaw, thiab macroscopic manifestation yog emit lwm lub teeb xim.Lub teeb ci ntau lub teeb tuaj yeem muab tsis tau tsuas yog lub teeb pom kev rov qab los saib xyuas cov fluorescence, tab sis kuj yog lub teeb ci ntsa iab.
2. Xim sib cais txoj cai
Lub hauv paus ntsiab lus ntawm kev sib cais xim yog qhov yuav tsum tau ua ua ntej rau kev xaiv kom raug ntawm lub wavelength band (xim lub teeb) thiab xim lim ntawm ntau lub teeb ci.txhais tau tias yog xaiv cov ntxoov ntxoo.
Forensic Multiband Light Source Filters
| Txheej txheem | (IAD Hard Txheej) |
| Substrate | Pyrex, Fused silicon |
| FWM | 30 ± 5nm |
| CWL (nm) | 365, 415, 450, 470, 490, 505, CSS510, 530, 555, 570, 590, 610 |
| T avg. | > 80% |
| nqes hav | 50% ~ OD5 <10nm |
| Thaiv | OD = 5-6 @ 200-800nm |
| Qhov Loj (mm) | Φ15, Φ21.2, Φ25, Φ55, thiab lwm yam. |
Cov txheej txheem tsim khoom
