Mataki na biyu: Menene Fiber optic spectrometer, kuma ta yaya kuke zabar tsaga da fiber da ya dace?
Fiber optic spectrometers a halin yanzu suna wakiltar babban aji na spectrometers.Wannan nau'in spectrometer yana ba da damar watsa siginar gani ta hanyar kebul na fiber optic, galibi ana kiransa jumper fiber optic, wanda ke sauƙaƙe haɓakar sassauci da dacewa a cikin bincike na gani da daidaita tsarin.Ya bambanta da na al'ada manyan na'urori na dakin gwaje-gwaje sanye take da tsayin tsayin daka yawanci kama daga 300mm zuwa 600mm da yin amfani da gratings na sikandire, fiber optic spectrometers suna amfani da kafaffen gratings, suna kawar da buƙatar injin juyawa.Matsakaicin tsayin waɗannan na'urori yawanci suna cikin kewayon 200mm, ko kuma suna iya zama ma gajarta, zuwa 30mm ko 50mm.Waɗannan kayan aikin suna da ƙanƙanta sosai kuma ana kiran su da ƙananan filaye na gani na fiber optic.
Ƙananan Fiber Spectrometer
Karamin na'urar duban gani na fiber optic ya fi shahara a masana'antu saboda ƙaƙƙarfan sa, ingancin farashi, ƙarfin ganowa da sauri, da sassauƙa na ban mamaki.Karamin ma'aunin gani na fiber na gani yawanci ya ƙunshi tsagewa, madubi mai kaɗawa, grating, mai gano CCD/CMOS, da keɓaɓɓen kewayawar tuƙi.Ana haɗa shi da software na kwamfuta mai ɗaukar hoto (PC) ta hanyar kebul na USB ko kebul na serial don kammala tarin bayanan bakan gizo.
Tsarin Fiber optic spectrometer
Fiber optic spectrometer sanye take da adaftar dubawar fiber, yana ba da amintaccen haɗi don fiber na gani.SMA-905 fiber musaya ana amfani da a mafi fiber optic spectrometers duk da haka wasu aikace-aikace bukatar FC/PC ko maras misali fiber musaya, kamar 10mm diamita cylindrical Multi-core fiber interface.
SMA905 fiber interface (baki), FC / PC fiber interface (rawaya).Akwai ramin akan FC/PC dubawa don sakawa.
Siginar gani, bayan wucewa ta fiber na gani, za ta fara bi ta hanyar tsagewar gani.Ƙananan spectrometers yawanci suna amfani da slits marasa daidaitacce, inda aka kayyade faɗin tsaga.Ganin cewa, JINSP fiber optic spectrometer yana ba da daidaitattun nisa na 10μm, 25μm, 50μm, 100μm, da 200μm a cikin ƙayyadaddun bayanai daban-daban, kuma ana samun gyare-gyare bisa ga buƙatun mai amfani.
Canji a cikin faɗin tsaga na iya yin tasiri ga jujjuyawar haske da ƙudurin gani yawanci, waɗannan sigogi biyu suna nuna alaƙar ciniki.Ƙunƙarar girman tsaga, mafi girman ƙudurin gani, duk da cewa ana kashe raƙuman haske.Yana da mahimmanci a lura cewa faɗaɗa tsaga don ƙara yawan juzu'in haske yana da iyaka ko maras tushe.Hakazalika, rage tsaga yana da iyaka akan ƙudurin da ake iya cimmawa.Masu amfani dole ne su tantance kuma zaɓi tsaga mai dacewa daidai da ainihin buƙatun su, kamar ba da fifiko ga jujjuyawar haske ko ƙudurin gani.Dangane da wannan, takaddun fasaha da aka bayar don JINSP fiber optic spectrometers sun haɗa da cikakken tebur da ke daidaita faɗuwar tsaga tare da matakan ƙuduri masu dacewa, suna aiki azaman mahimman tunani ga masu amfani.
Maƙarƙashiyar tazara
Teburin Kwatancen Tsaga-Resolution
Masu amfani, yayin da suke kafa tsarin sitiriyo, suna buƙatar zaɓar filaye masu dacewa don karɓa da watsa sigina zuwa matsayin tsagewar sitirori.Ana buƙatar sigogi masu mahimmanci guda uku don yin la'akari lokacin zabar filaye masu gani.Siga na farko shine core diamita, wanda yake samuwa a cikin kewayon yiwuwa ciki har da 5μm, 50μm, 105μm, 200μm, 400μm, 600μm, har ma ya fi girma diamita fiye da 1mm.Yana da mahimmanci a lura cewa ƙara girman diamita na iya haɓaka ƙarfin da aka karɓa a gaban ƙarshen fiber na gani.Koyaya, nisa na tsaga da tsayin mai gano CCD/CMOS yana iyakance siginar gani da na'urar zata iya karba.Don haka, haɓaka diamita na asali ba lallai ba ne ya inganta hankali.Masu amfani yakamata su zaɓi madaidaicin diamita mai dacewa dangane da ainihin tsarin tsarin.Don B&W Tek's spectrometers ta amfani da masu gano CMOS na layi a cikin samfura kamar SR50C da SR75C, tare da tsarin tsaga 50μm, ana ba da shawarar yin amfani da fiber na gani mai mahimmanci na 200μm don karɓar sigina.Don spectrometers tare da masu gano CCD na yanki na ciki a cikin samfura kamar SR100B da SR100Z, yana iya dacewa don yin la'akari da filaye masu kauri, kamar 400μm ko 600μm, don karɓar sigina.
Daban-daban na gani fiber diamita
Sigina na fiber optic haɗe zuwa tsaga
Bangare na biyu shine kewayon tsayin aiki da kayan filaye na gani.Kayan fiber na gani yawanci sun haɗa da High-OH (high hydroxyl), Low-OH (ƙananan hydroxyl), da fibers masu jurewa UV.Daban-daban kayan suna da nau'ikan watsawa daban-daban.Ana amfani da filaye masu ƙarfi-OH a cikin kewayon haske na ultraviolet / bayyane (UV/VIS), yayin da ƙananan-OH fibers ana amfani da su a cikin kewayon infrared na kusa (NIR).Don kewayon ultraviolet, ya kamata a yi la'akari da filaye masu tsayayya da UV na musamman.Ya kamata masu amfani su zaɓi fiber na gani da ya dace dangane da tsawon aikin su.
Bangare na uku shine ƙimar buɗaɗɗen lamba (NA) na filaye masu gani.Saboda ƙa'idodin fitar da filaye na gani, hasken da aka fitar daga ƙarshen fiber ɗin yana cikin kewayon kewayon kusurwa, wanda ke da ƙimar NA.Zaɓuɓɓukan gani masu yawa gabaɗaya suna da ƙimar NA na 0.1, 0.22, 0.39, da 0.5 azaman zaɓuɓɓuka gama gari.Ɗaukar mafi yawan 0.22 NA a matsayin misali, yana nufin cewa diamita na fiber bayan 50 mm yana da kusan 22 mm, kuma bayan 100 mm, diamita shine 44 mm.Lokacin zayyana na'urar sikirin, masana'antun yawanci suna la'akari da dacewa da ƙimar fiber na gani na NA kamar yadda zai yiwu don tabbatar da iyakar ƙarfin liyafar.Bugu da ƙari, ƙimar NA fiber na gani yana da alaƙa da haɗar ruwan tabarau a ƙarshen ƙarshen fiber ɗin.Hakanan ya kamata a daidaita ƙimar NA na ruwan tabarau kamar yadda zai yiwu ga ƙimar NA fiber don guje wa asarar sigina.
Ƙimar NA fiber na gani yana ƙayyade kusurwar banbance-banbance na katako mai gani
Lokacin da aka yi amfani da filaye na gani tare da ruwan tabarau ko madubai masu kama da juna, ƙimar NA ya kamata a daidaita daidai da yadda zai yiwu don kauce wa asarar makamashi.
Fiber optic spectrometers suna karɓar haske a kusurwoyi da aka ƙaddara ta ƙimar NA su (Numerical Aperture).Za a yi amfani da siginar abin da ya faru gabaɗaya idan NA na hasken abin da ya faru bai kai ko daidai da wancan na'urar ba.Rashin makamashi yana faruwa lokacin da NA na hasken abin da ya faru ya fi NA na spectrometer girma.Baya ga watsa fiber optic, ana iya amfani da haɗin haɗin kai na gani kyauta don tattara siginar haske.Wannan ya haɗa da haɗa haske mai kama da juna zuwa tsaga ta amfani da ruwan tabarau.Lokacin amfani da hanyoyin gani na sarari kyauta, yana da mahimmanci a zaɓi ruwan tabarau masu dacewa tare da ƙimar NA daidai da na sikirin, yayin da kuma tabbatar da cewa tsagawar sikirin yana sanya shi a ma'aunin ruwan tabarau don cimma matsakaicin saurin haske.
Haɗin kai na gani kyauta
Lokacin aikawa: Dec-13-2023