基于近红外光的人工流产手术系统设计

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1、万方数据硕士学位论文infraredregionof700～1300nm．Inthenear-infraredlight，duetobloodabsorbanceofthenear-infraredlightislowerthanthevisiblelight，near-infraredlightintensityofthelighttransmittedthroughthebloodisrelativelymorethanvisible，thetransmittedlightintensitythatCMOScame

2、raisreceivingisrelativelymore，CMOScameraimagingisverybetter．TodonearinfraredlightsimulationexperimentsinabloodenvironmenttoverifytheCMOScameraiswithbetterresolutionunderconditionsofnear-infraredlightconditionsthanvisiblelight．Thevisiblelight、850nm、940nminfraredL

3、EDwereselecteddirectlyasthemainwavelighting．ThreecuveResfilledofbloodwereselected，thesizeofthreecuvetteswithdifferentopticalpath(O．3mm，0．5mm，lmm)representthethicknessofblood．Throughingthebloodof0．3mmthickness，CMOScameracandistinguishlinespacingof1mmunderthecondi

4、tionofvisiblelight，buttheimagingresultisbad；At850nm、940nminfraredlightconditions，CMOScandistinguishlinespacingof0．5mm，theimagingeffectisgood．Throughingthebloodof0．5mmthickness，CMOScameracannotdistinguishlinespacingof1mmundertheconditionofvisiblelight，SOtheimagin

5、gresultisbad；At850nm、940aminfraredlightconditions，CMOScandistinguishlinespacingoflmm，theimagingeffectisworse．Throughingthebloodof1mmthickness，CMOScameracannotdistinguishlinespacingof1mmundertheconditionofvisiblelightand850nm、940nminfraredlightconditions，SOtheima

6、gingresultisworst．ExperimentsaboveprovedthatCMOScameracanpenetratethroughthebloodof0．3mmthicknessundertheconditionofinfraredlighting．andimagingeffectwasbetterthanvisiblelight．ThespectralrangeoftheCMOSimagesensoris350"～100nm，thepeakresponsewavelengthisnear700nm，a

7、ndtheCMOSimagesensorhasitsowncut-offwavelength．WithinfraredwavelengthincreasestheresponsivityandquantumefficiencyofCMOSsensorsarechanged，thiswillhavecertaineffectsonimaging．Therefore，undertheconditionofimagingthroughblood，areasonablechoiceofthewavelengthoftheinf

8、raredlightbecomesthekey．So，weneeddothefollowingexperimentstofurtherdeterminethebestinfraredwavelengths．万方数据ABSTRACTAtungstenhalogenlightsource(wavelengthrange360～2000