Daim ntawv thov cov ntxaij lim dej hla cov kab sib txawv spectral hauv kev lag luam kho qhov muag

Kev siv cov lim dej
Daim ntawv thov cov ntxaij lim dej hla ntau cov spectral bands hauv kev lag luam kho qhov muag feem ntau siv lawv lub peev xwm xaiv cov wavelength, ua kom muaj kev ua haujlwm tshwj xeeb los ntawm kev hloov kho lub wavelength, kev siv zog, thiab lwm yam khoom siv kho qhov muag. Cov hauv qab no qhia txog cov kev faib tawm thawj zaug thiab cov xwm txheej hauv qab no:

Kev faib tawm raws li cov yam ntxwv spectral:
1. Long-pass lim (λ > cut-off wavelength)
Hom lim no tso cai rau lub wavelengths ntev dua li qhov kev txiav tawm wavelength kom dhau los ntawm thaum thaiv qhov luv wavelengths. Nws yog feem ntau siv hauv biomedical imaging thiab kev kho mob zoo nkauj. Piv txwv li, fluorescence microscopes siv cov ntxaij lim dej ntev dhau los txhawm rau tshem tawm cov teeb pom kev luv luv.

2. Short-pass lim (λ < txiav tawm wavelength)
Cov lim no xa cov wavelengths luv dua li qhov kev txiav tawm wavelength thiab attenuates ntev wavelengths. Nws pom cov ntawv thov hauv Raman spectroscopy thiab kev soj ntsuam astronomical. Ib qho piv txwv zoo yog IR650 luv-pass lim, uas yog ua haujlwm hauv kev saib xyuas kev ruaj ntseg los tiv thaiv infrared cuam tshuam thaum nruab hnub.

3. Narrowband lim (bandwidth <10 nm)
Narrowband filters yog siv rau kev kuaj pom tseeb hauv thaj chaw xws li LiDAR thiab Raman spectroscopy. Piv txwv li, BP525 nqaim band lim nta lub nruab nrab wavelength ntawm 525 nm, tag nrho dav ntawm ib nrab siab tshaj plaws (FWHM) ntawm tsuas yog 30 nm, thiab lub ncov xa tawm ntau tshaj 90%.

4. Tsis siv neeg lim (stopband bandwidth < 20 nm)
Cov ntxaij lim dej tshwj xeeb yog tsim los txhawm rau cuam tshuam hauv qhov nqaim spectral ntau. Lawv tau siv dav hauv kev tiv thaiv laser thiab bioluminescence imaging. Ib qho piv txwv suav nrog kev siv cov ntxaij lim dej los thaiv 532 nm laser emissions uas yuav ua rau muaj kev phom sij.

Kev faib tawm raws li cov yam ntxwv ua haujlwm:
- Polarizing films
Cov khoom no yog siv los ua kom paub qhov txawv ntawm crystal anisotropy lossis txo qhov cuam tshuam ntawm lub teeb pom kev zoo. Piv txwv li, hlau hlau kab sib chaws polarizers tuaj yeem tiv taus lub zog hluav taws xob laser irradiation thiab tsim nyog siv rau hauv kev tsav tsheb ntawm LiDAR.

- Dichroic tsom iav thiab xim sib cais
Dichroic tsom iav cais tshwj xeeb spectral bands nrog txoj kev hloov pauv siab-piv txwv li, xav txog lub wavelengths hauv qab 450 nm. Spectrophotometers proportionally faib kis tau thiab pom lub teeb, ib tug functionality nquag pom nyob rau hauv multispectral imaging systems.

Core application scenarios:
- Cov khoom siv kho mob: Ophthalmic laser kho thiab dermatological cov cuab yeej xav tau kev tshem tawm cov teeb meem spectral bands.
- Optical sensing: Fluorescence microscopes ntiav cov lim dej kom pom cov fluorescent tshwj xeeb, xws li GFP, yog li txhim kho cov teeb liab-rau-lub suab sib piv.
- Kev saib xyuas kev nyab xeeb: IR-CUT lim teeb thaiv cov hluav taws xob infrared thaum nruab hnub ua haujlwm kom paub meej cov xim luam tawm hauv cov duab ntes.
- Laser thev naus laus zis: Cov ntxaij lim dej tsis siv neeg ua haujlwm los cuam tshuam laser cuam tshuam, nrog rau kev siv dav dav hauv kev tiv thaiv tub rog thiab ntsuas ntsuas ntsuas.