Yuav ua li cas calibrate ib polarization microscope?
Nyob rau hauv kev xyaum, cov kev taw qhia ntawm kev co ntawm lub sab sauv thiab sab polarizing tsom iav ntawm polarizing microscope yuav tsum yog orthogonal rau ib leeg, los yog nyob rau hauv sab hnub tuaj-sab hnub poob thiab sab qaum teb-sab qab teb cov lus qhia, txhua tus nyob rau hauv txoj kab nrog tus ntoo khaub lig filament ntawm lub eyepiece nyob rau hauv ob qho tib si. cov lus qhia transverse thiab longitudinal. Qee lub sij hawm tsuas yog ib qho qis polarizer yog siv rau kev soj ntsuam, thiab cov kev taw qhia ntawm kev vibration ntawm lub polarizer qis yuav tsum tau txiav txim siab, yog li tus polarizer yuav tsum tau kho thaum lub sij hawm ua hauj lwm.
(1) Kev tshuaj xyuas ntawm cov eyepiece cross filament
Feem ntau xyuas seb lub eyepiece cross filament yog orthogonal, thiab seb nws puas yog raws li cov kev taw qhia ntawm kev co ntawm lub sab sauv thiab sab polarizers, thiab nyob rau tib lub sij hawm, xaiv ib daim ntawm dub mica nrog ib tug tiav kev daws teeb meem ncej, txav mus rau qhov chaw. ntawm lub eyepiece cross filament, tso qhov kev daws teeb meem sib npaug mus rau ib qho ntawm cov ntoo khaub lig filaments thiab nco ntsoov cov naj npawb ntawm cov nplais ntawm lub rooj nqa khoom, tom qab ntawd tig lub rooj tsiaj kom qhov kev daws teeb meem yog sib npaug rau lwm cov ntoo khaub lig filament, thiab sau cia. Tus naj npawb ntawm cov nplais ntawm lub rooj nqa khoom, thiab qhov sib txawv ntawm ob qhov ntsuas yog 90 degree, uas qhia tau hais tias tus ntoo khaub lig filaments yog orthogonal. Qhov sib txawv ntawm ob qhov ntsuas yog 90 degree, qhia tias tus ntoo khaub lig filaments yog orthogonal.
(2) Kev txiav txim siab thiab kho qhov kev taw qhia ntawm kev vibration ntawm qis polarizer
Feem ntau, dub mica yog siv los xyuas cov kev taw qhia ntawm kev vibration ntawm qis polarizer, qhov no yog vim cov mica dub yog cov pob tshab pob tshab dav dav, uas yog cov yam ntxwv ntawm ib lub teeb polarized. Ua ntej pom ib qho kev daws teeb meem thiab meej dub mica, txav mus rau hauv nruab nrab ntawm tus ntoo khaub lig filament ntawm lub qhov muag, tso lub polarizer sab saud, tig lub rooj nqa khoom rau ib lub lis piam thiab saib xyuas qhov kev hloov ntawm cov xim ntawm cov mica dub, vim tias qhov dub mica absorbs lub teeb vibration nyob rau hauv cov kev taw qhia ntawm kev daws teeb meem * muaj zog *, yog li ua rau cov xim dub mica kom ncav cuag * tob * thaum cov kev taw qhia ntawm kev daws slit yog cov kev taw qhia ntawm kev vibration ntawm lub polarizer qis.
(3) Kho ntawm orthogonality ntawm sab sauv thiab sab polarizers
Tom qab cov kev taw qhia ntawm lub qis polariser raug kho, tshem tawm daim ntawv, thawb lub sab sauv polariser thiab saib seb lub teb ntawm saib yog dub kiag li, piv txwv li seb nws yog nyob rau hauv ib tug extinction xeev. Yog tias nws yog tag nrho cov xim dub, nws qhia tau hais tias cov kev taw qhia kev co ntawm sab sauv thiab sab polarisers yog orthogonal rau ib leeg. Txwv tsis pub, lub sab sauv polariser yuav tsum raug kho, piv txwv li tig lub sab sauv polariser kom thaj tsam ntawm qhov pom mus txog qhov tsaus ntuj tshaj plaws. Thaum tig, nres ntsia hlau ntawm lub polarizer sab sauv yuav tsum tau xoob ua ntej, thiab tom qab ntawd nruj tom qab kho.
