05/02/2018 imaging characterization of ultra-wide field ar ...williams, d. r. (2003). subjective...
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MAJORRESULTS:• Lenshadconsistentperformanceoutuntil87deg.• Asexpected,thelensperformedworseattheedgesofthe
fieldthantowardsthemiddle.• Duetoconstraintsofthemountofthelens,no
informationwasavailablefrom87-120deg.whichcouldhaveinformedtothedecayoftheresolution.
GOAL/OBJECTIVE:Todesignanapplication-specific,field-varyingresolutionclassificationofthefisheyecameralensforuseinaVR/ARvideostreamingsystem.
TEST:RotatedthelensaroundL-shapedtargetandconductedslantededgeMTFtestsatvariouspointsinthefield.RecordresolutiondataacrosstheentireFOVatspecificlocationsinequallyweightedcirclesaroundthefield.• Took11rhorotationmeasurementsattheanglesacross8
symmetricalthetarotationsevery45°.• Total:88totalmeasurements.
Participants:BarryMagenya (ProjectCoordinator),MikeBrunsman (CustomerLiaison),MitchSoufleris (Scribe),AaronMichalko (FacultyAdvisor);Customer:RaptorVisionLLC
Imaging Characterization of Ultra-Wide Field AR/VR Lenses
05/02/2018
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FrontandBackviewsoffinaltestset-up(above).
r1 0r2 45r3 54r4 75r5 87r6 120
Diagramofmeasurementsacrossfieldandanglesatwhichmeasurementswillbetaken
(below).
Fromlefttoright:Entaniya fisheyelenswith280°fieldofview,Pixelink PL-E533CUcameraandcircuitboardandsensor.
Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/OPT310.html
APPLICATION:MATLABVIStoolcapabilitiesinclude• ProducearetinalimageusingZernikecoefficientsfromapatient.• Accountsforapodization oftheeyetomimictheStiles-Crawfordeffect
attheretina.• ProduceapolychromaticPSFusedtoproduceanRGBimage.• Accountsforthetoric natureofthecorneabyallowingtheuseofan
elliptical-pupilfunction.• ProvidesimagequalitymetricsincludingtheVisualStrehl Ratio.• ComputesanABCDmatrixbasedontheDiazpapertofindthe
effectivefocallengthofthecrystallinegradientindexoftheeye.
References:Abraham,Chandler.“ABeginner'sGuideto(CIE)Colorimetry–ColorandImaging–Medium.”Medium,AugmentingHumanity,10Sept.2016,medium.com/hipster-color-science/a-beginners-guide-to-colorimetry-401f1830b65a.Campbell,F.W.,&Green,D.G.(1965).Opticalandretinalfactorsaectingvisualresolution.JournalofPhysiology,181,576-593.Gobbi,PierGiorgio.“ModelingtheOpticalandVisualPerformanceoftheHumanEye”,SPIEPress.2013Huang,Yanqiao.“HumanLensModelingandBiometricMeasurementTechnique.”DepartmentofBiomedicalEngineering,UniversityofRochester.2008.http://hdl.handle.net/1802/6275Iskander,D.Robert,etal.“ObjectiveRefractionfromMonochromaticWavefrontAberrationsviaZernikePowerPolynomials.”OphthalmicandPhysiologicalOptics,vol.27,no.3,2007,pp.245–255.,doi:10.1111/j.1475-1313.2007.00473.x.J.A.Díaz,“ABCDmatrixofthehumanlensgradient-indexprole:applicabilityofthecalculationmethods,”Appl.Opt.47,195–205(2008).APOPAI0003-6935http://dx.doi.org/10.1364/AO.47.000195KresimirMatkovic.ToneMappingTechniquesandColorImageDierenceinGlobalIllumination.2003L.N.Thibosetal,"Accuracyandprecisionofobjectiverefractionfromwavefrontaberrations,"JournalofVision,vol.4,(4),pp.329,2004.Lindbloom,BruceJustin.“RGB/XYZMatrices.”BruceLindbloom'sWebsite,7Apr.2017,www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html.Schwiegerling,Jim."Scalingpseudo-Zernikeexpansioncoecientstodierentpupilsizes,"Opt.Lett.36,3076-3078(2011)StuartRussellandPeterNorvig.2009.ArticialIntelligence:AModernApproach(3rded.).PrenticeHallPress,UpperSaddleRiver,NJ,USA.Watson,AndrewB.“ComputingHumanOpticalPointSpreadFunctions.”JournalofVision,TheAssociationforResearchinVisionandOphthalmology,1Feb.2015,jov.arvojournals.org/article.aspx?articleid=2213266.Williams,D.R.(2003).Subjectiveimagequalitymetricsfromthewaveaberration.Paperpresentedatthe4thInternationalCongressofWavefrontSensingandAberration-FreeRefractiveCorrection,SanFrancisco,CA.
GOAL:Todevelopadigitalvisualizationimagesimulation(VIS)tooltosimulatehowapatient’seyeswillperforminaroutineeyeexam.
OBJECTIVE:VIStoolwillaidinprovidingaccurateprescriptionsforeyecarewhilereducingthetime,cost,andhumanerrorcurrentlyassociatedwiththecommonexamroutine.
Improved Method of Estimating Required Vision Correction05/04/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/vision-FinalDDD.pdf
Participants:AliHashim (ProjectCoordinator),DiegoMartinez(CustomerLiaison),PerryWang(DocumentHandler),Weidi Liu (Scribe),Dr.JenniferHunter(FacultyAdvisor);Customer:DigitEyez
PSFfoundusingperfectlenswasmodeledwithhard-codedZernikecoefficientsusingCodeV(left)andusingMATLABVIStool(right)toconfirmconsistencyoftheVIStool.BothPSFsareinvertedduetonegativemagnification.
MAJORRESULTS:• Designandbuildaninitialstaticprototype.• Futureplansincludeintegratingamechanical
componentthatwillallowforrotationtoimageatmultipleangles,findingafluidforthefluoroscopyprocedure,anddesigningaswitchprogramtoallowformoreeffectiveimaging.
GOAL:Todesignanearinfrared(NIR)imagingsystemprototypethatcanbeusedinsurgicalsimulationstoaccuratelyreplicatethecurrenttechnologyofx-rays.
OBJECTIVE:Thisprojectwillallowsurgeonstoperformpracticesurgeriesinasaferenvironmentandcouldleadtoahigherrateofsuccess.
TEST:Testedtheprototype'sperformancemetrics:• MTFmeasurementtotesttheresolutionquality.• Spotdiagramstotesttheoff-axisquality.
Also,conductedasamplematerialstudytoanalyzetheeffectofsolutionsinvaryingconcentrationsandtheperformancewithvaryingsettings.
Safe Near-Infrared Surgical Trainer for Urologists05/06/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/trainer-DDDTeamTrainerFINAL.pdf
Participants:KatieArmstrong(ProjectCoordinator),NoraLane(CustomerLiaison),Chih-Hsuan Tsao(DocumentHandler),JosephKelly(Scribe),Dr.GregSchmidt(FacultyAdvisor)
Customer:URUrology/Dr.AhmedGhazi
Opticaldesignoftheprototypesetup(above).
Bartargetandneedleinbetweentwolayersof40%Dimethylsulfoxidesamplewithskinlayerontop(right).
Schematicsoftheopticalprojection.Note:Agratingisprojectedontotheimageplane(below).
MAJORRESULTS:• Presentedaverticallyalignedprototypesystemtoshow
proofofconcept.• Capturedanimageandmanuallyranitthroughprogramto
producea3Dmodelwiththequantitativedatafortheheight,lengthandwidthofthebump.
GOAL:ToimproveaccuracyoftheskintestwithPurifiedProteinDerivative(PPD),thecurrentmeasuringmethodforLatentTuberculosis,viaannovelopticsystemthatwouldcalculatethesurfacetopographyoftheblebafterinjection,andprovideavolumemeasurement.
OBJECTIVE: Toeliminatesubjectivity/amountofhumanerrorassociatedwiththecurrenttest.
TEST:DevelopedaMATLABprogramtoperformFouriertransform,andphaseunwrappingontheimages.Numericaldatawasextractedfromtheshiftsofthelinepatternwhichiscalculatestheheightandwidthofthereactionbump.
Also,conductedin-vivoimagetestingonaraisedskinmoleunderdifferentcolorLEDlighttovalidatetheirdesignandtesttheMATLABcodeprocessing.
Optical Metrology of Skin Bumps in Tuberculosis Testing05/06/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/TBFinalDDD.pdf
Participants:SzeWah Lee(ProjectCoordinator),RebeccaSilver(CustomerLiaison),CocoYang(DocumentHandler),MadilynBeckman(Scribe),YiWenFan(CodingExpert),AndrewBerger(FacultyAdvisor)
Customer:RNTorres
Finalpresentedsystemsetup(above).
References: 1.Mathematic Theory: Tavares, Paulo J., and Mario A. Vaz. “Linear Calibration Procedure for the Phase- to-Height Relationship in Phase Measurement Profilometry.” Optics Communications, vol. 274, no. 2, 2007, pp. 307–314. 2007.02.038. 2. Polarizer Theory: Anderson, R. Rox. “Polarized Light Examination and Photography of the Skin.” JAMA Internal Medicine, American Medical Association, 1 July 1991. 3.Camera: https://www.theimagingsource.com/products/industrial-cameras/firewire-400-monochrome/dmk31bf03/ 4.Collimating Lens: https://www.edmundoptics.com/optics/optical-lenses/double-convex-dcx-spherical-singlet-lenses/15mm-dia.-x-20mm-fl-uncoated-double-convex-lens/ 5.Doublet: https://www.edmundoptics.com/optics/optical-lenses/double-convex-dcx-spherical-singlet-lenses/15mm- dia.-x-20mm-fl-uncoated-double-convex-lens/
MAJORRESULTS:Designeda“invisibleglass”prototypeandwasabletodemonstratetothepublic.
Futureideasincludethepotentialofaddinglasersandcolorforincreasedentertainmentasafinalizedexhibit.
GOAL:Tocreatean“invisibleglass”prototypeexhibitfortheRochesterMuseum&ScienceCenterasaproofofconcept.
OBJECTIVES:TocommemorateKatherineBlodgett’sworkonantireflectivecoatingsandtobeanentertainingandeducationalexhibittothegeneralpublicofallages.
CONCEPT:Creationof“invisibleglass”exhibit• Developmethodforpreventingthetwoliquidsfrom
mixingwhentheglasspieceisusedconsistentlyoveralargeperiodoftimewithpotentialforce.
• Testvariousrefractiveindicestodeterminewhatrefractiveindicessatisfactorilycausestheglasspiecetobecome“invisible.”
• Tocreateacaptionforthedisplaythatoffersasimpleyetinformativeexplanationoftheprocessesathand.
“Invisible Glass” Museum Prototype Exhibit05/04/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/rmsc-DDD_Museum_Final.pdf
Participants:HaleyKnapp(ProjectCoordinator),Zilong Li(CustomerLiaison),StephenChess(DocumentHandler,Scribe),DuncanMoore(FacultyAdvisor)Customer:RochesterMuseum&ScienceCenter
References:1.Whelan,M.,andDr.EdwinReilly.“KatharineBurrBlodgett.”KatharineBurrBlodgett- EngineeringHallofFame,EdisonTechCenter,2014,www.edisontechcenter.org/Blodgett.html.2.“IrvingLangmuirandKatharineBurrBlodgett.”ChemicalHeritageFoundation,30Oct.2015,www.chemheritage.org/historical-profile/irving-langmuir-and-katharine-burr- blodgett.3.Majewski,Janice.“SmithsonianGuidelinesforAccessibleExhibitionDesign.”SmithsonianInstitution,SmithsonianAccessibilityProgram,www.si.edu/Accessibility/SGAED#page_21.4.Nave,R.“RefractionofLight.”RefractionofLight,GeorgiaStateUniversity,hyperphysics.phy-astr.gsu.edu/hbase/geoopt/refr.html.
DemonstrationoftheMATLABreconstructiontool(left).
MAJORRESULTS:• Developedareconstructionalgorithmsforanimported
imageatdifferentdefocuspositionstakenfromtheplenoptic systeminZEMAX.
• Futureworkincludescreatinganalgorithmtocharacterizethesystemdesign,generatingthePSFforimageswithchangingf/#,pixelsize,orotherinputs,andupdatingthescripttodeterminetheboundsofthereconstruction.
GOALS:• Topresentatradestudyofaplenoptic systemwith
regardtomicrolens dimensions,sensortype,andimagespacef/#.
• ToprovidetheimagereconstructiontoolstoimplementNavitar’s plenoptic lenssystem.
CONCEPT:Aplenoptic imagingreliesonasetofmicrolensesinfrontofthesensor.Eachsetofpixelsbehindthemicrolenses makesupamicrolens array.
Themicrolens arrayprovidesadirectionalitycomponentoflight,whichallowsreconstructionoftheimagetodifferentdefocusdepths.However,thereisalossinresolutionthatreconstructstheimagemustaveragesoutamicrolens arraytobeonepixel.
Methodology for Processing Plenoptic System Images05/04/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/pleno-DDDFinal- TeamPleno.pdf
Participants:WenZhou(ProjectCoordinator),StephenWatson(CustomerLiaison),Xiaojing Huang(DocumentHandler),Weichen Yao(Scribe),Dr.ScottCarney(FacultyAdvisor)
Customer:Navitar
Threemonolithicfreeformtelescopedesigns(below).
MAJORRESULTS:• Concludedtheshapeandqualitativepropertiesofthe
focusspots(asshownabove)werestronglycorrelatedandsupportedtheproposedMSFmodel.
• Confirmedtheproposedmodelwithempiricalthrough-focusspotmeasurements.
• Addressedthetolerancing andsensitivityanalysis.
GOAL:TounderstandandmodelhowMid-SpatialFrequency(MSF)erroraffectsthemonolithictelescopes.
PROGRESS:(1) Developmodelthataccuratelysimulatestheeffect
MSFerrorhasonasystem’simagingperformance.(2) Verifythemodelusingempiricalmeasurementsfor
confirmation.(3) ApplytheMSFmodeltotheStage3telescopedesign
toperformsensitivityanalysisandtolerancing.
Modeling Mid-Spatial Frequency Roughness in Freeform Optics
05/06/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/monolith-TeamMonolith_DDD_RevFinal.pdf
Participants:DavidHenryLippman (ProjectCoordinator),KevinKuyk (CustomerLiaison),Wooyoun Kim(DocumentHandler),MatthewPage(Scribe),Dr.JannickRolland(FacultyAdvisor)
Customer:Optimax Systems
References:Tamkin,JohnM.,andTomD.Milster."EffectsofStructuredMid-SpatialFrequencySurfaceErrorsonImagePerformance."AppliedOptics ,vol.49,no.33,2010,pp.6522.Tamkin,JohnM.,WilliamJ.Dallas,andTomD.Milster."TheoryofPoint-SpreadFunctionArtifactsduetoStructuredMid-SpatialFrequencySurfaceErrors."AppliedOptics ,vol.49,no.25,2010,pp.4814.Tamkin,JohnM.,TomD.Milster,andWilliamDallas."TheoryofModulationTransferFunctionArtifactsduetoMid-Spatial-FrequencyErrorsanditsApplicationtoOpticalTolerancing."AppliedOptics ,vol.49,no.25,2010,pp.4825.Rogers,JohnR.SlopeErrorTolerancesforOpticalSurfaces,vol.10316,SPIE,2007,doi:10.1117/12.725057.H.Aryan,C.J.Evans,andT.J.Suleski,"OntheUseofISO10110-8forSpecificationofOpticalSurfaceswithMid-SpatialFrequencyErrors,"inOpticalDesignandFabrication2017(Freeform,IODC,OFT) ,OSATechnicalDigest(online)(OpticalSocietyofAmerica,2017),paperOW4B.2.JasonA.Shultz,Hamidreza Aryan,JosephD.Owen,MatthewA.Davies,andThomasJ.Suleski.“Impactsofsub-aperturemanufacturingtechniquesontheperformanceoffreeformoptics.”
Comparisonofmodeledandmeasuredimagespotsthrough-focusfortheStage1design.Allspotsareonthesamerelativespatialscalebutnotthesamerelativeintensityscale.BothpossesstheexpectedMSFsignatures(above).
MAJORRESULTS:• Inthefinalsystemset-up,awhiteLEDsourceisshinedtoa
mirrorthatistitled45° fromthez-axis.Thelightthenreflectstothesample,adielectricthinfilmonaSiO2wafer,thenbacktothemirror.Finally,thelightisreflectedtoanaperture,throughasinglelensandintoanRBGcamera.
• AcompleteMATLABalgorithmmatchesthereconstructedreflectanceforthe15filmsonthetrainingsampleand61thicknesssamplestoadatabaseoffilmthicknesses.
GOAL:Todevelopandproduceadual- anglecameraimagingsystemfordeterminingdielectricthinfilmthicknessintheRITMicroelectronicsCleanroomLab.
Reference:[1]Kruschwitz,JenniferDT,andRoyS.Berns."Dual-angle,spectralreconstructionimagingmethodforthedeterminationofdielectricthin-filmthickness."Opticsletters42.15(2017):3032-3035.
TASKS:• Finishedcameragammacalibration.• ConductedThicknessesmeasurementonsample
siliconwafersforinitialsystemtestingwithoutalgorithmanalysis.
• Designed,built,andtestedafinalizedsystem.• Developedanalgorithmandtestoncalibration
samples.
Instrument for Precise Measurement of Silicon Dioxide Films
05/05/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/films-Team_Films_Final_DDD.pdf
Participants:YangDeng(ProjectCoordinator),ZhengTan(CustomerLiaison),DianaMagana(DocumentHandler,Scribe),JenniferKruschwitz&ClarkeEastman(FacultyAdvisors);Customer:J.Kruschwitz/RIT
Imagingboardcontainingtheaperture,lens,andcamera(left,up).Twoknobsnexttothemirror
(right,up).Set-upwithoutimaging
board(above).
FinalDesignSet-up(left)andVisibilityPlotofalllabresults(right).
MAJORRESULTS:• Designedasystemtomeasurevisibilityevery10μm and
allowsformeasurementsofthecoherencelengthofvarioussources
• Futureplansincludeinvestigatingartifactsfromthebeamsplitter andaddressingthecompactnessofthedesign.
GOAL:Todesignandassembleaninterferometercapableofmeasuringandreportinginformationregardingthecoherencelengthofalaser.References:[1] Paschotta,Rudiger.“Coherence.”EncyclopediaofLaserPhysicsandTechnology-Coherence,Coherent,Light,SpatialandTemporalCoherence,Monochromaticity,20Feb.2017,www.rp-photonics.com/coherence.html.[2] “PropertiesofLasers.”Worldoflasers.com,6Apr.2015,worldoflasers.com/laserproperties.htm.[3] “7(D.g.).CoherentLight.”AndresRoboticsandScience,www.goodrichscience.com/7-dg-coherent-light.html.[4] Vamivakas,Nick.IntroductiontoWaveOptics.[5] “CoherenceLength.”Wikipedia,WikimediaFoundation,14Mar.2018,en.wikipedia.org/wiki/Coherence_length.[6] “Helium-NeonLasers.”Sam'sLaserFAQ-Helium-NeonLasers,donklipstein.com/laserhen.htm#henmtmhl.[7]CustomerPowerPointPresentation[8]VladimyrosDevrelis,MartinO'Connor,andJesperMunch,"Coherencelengthofsinglelaser
TASKS:• Developedandupdatedaninterferometerprototype.• UsedFREDtomodeltheimpactofdiffractiononthesystem.• Developedasoftwareanalysismethodtocreateaplotofthe
visibilityasafunctionofopticalpathlengthdifferencethroughcalculatingtheimagealongeachlineofthegratingandthoughcalculatingthegratingline.
Instrument for Measurement of Coherence Length of Sources
05/06/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/coherence-Team_Coherence_Final_DDD.pdf
Participants:MaxwellWolfson(ProjectCoordinator),LeiDing(CustomerLiaison),PellegrinoConte(DocumentHandler,Scribe),ThomasBrown(FacultyAdvisor);Customer:ASML
MAJORRESULTS:• Optimizedtheinputpowerat500mWto
increasethesignal.• Recommendedthattoexposethesample
fornomorethan5-6minutestoavoiddamage.
GOAL:TooptimizetheSHGscanningsystemtobetterpredictmetastasisinbreastcancertissue.Themetrictopredictmetastasisistheratiooftheforwardtobackwardratio(F/B)ofscatteredlight.
TEST:• Analyzedthelaserleakageanddarknoisecorrection.• Calculatedthesampledamageathighpowersandover
time.• InvestigatedanHighDynamicRange(HDR)toolboxfor
MATLABtoovercomethedynamicrangelimitations.
Metastatic Cancer Detection with Second Harmonic Imaging
05/06/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/cancer-TeamCancerFinalDDD.pdf
Participants:JordanRabinowitz(ProjectCoordinator),Yuanchao Wang(CustomerLiaison),AvaHurlock(DocumentHandler),JamesEmery(Scribe),WayneKnox(FacultyAdvisor)Customer:Harmonigenic /Dr.RobertHill
ReferencesFrancescoBanterle,AlessandroArtusi,KurtDebattista,andAlanChalmers.AdvancedHighDynamicRangeImaging:TheoryandPractice.AKPeters(CRCPress),Natick,MA,USA,2011.K.Burke,M.Smid,R.P.Dawes,M.A.Timmermans,P.Salzman,C.H.M.canDeurzen,DavidG.Beer,J.A.Foekens,E.Brown.UsingSecondHarmonicGenerationtoPredictPatientOutcomeinSolidTumors.2015,BMCCancer15:929.JuanM.Bueno,FranciscoJ.Avila,PabloArtal,ComparisonofSecondHarmonicMicroscopyimagesofCollaged-basedOcularTissueswith800and1045nm.2017,BiomedicalOpticsVol.8No.11.Pantazis,Periklis etal.“SecondHarmonicGenerating(SHG)Nanoprobes forinVivoImaging.”ProceedingsoftheNationalAcademyofSciencesoftheUnitedStatesofAmerica107.33(2010):14535–14540.PMC.Web.4Feb.2018.Theodossiou T.,G.S.Rapti,V.Hovhannisyan,E.Georgiou,K.Politopoulos,D.Yova,ThermallyInducedIrreversibleConformationalChangesinCollagenProbedbyOpticalSecondHarmonicGenerationandLaser-inducedFluorescence.2002,LasersMedSci 17:34-41.Williams,RebeccaM.,WarrenR.Zipfel,WattW.Webb,2005,InterpretingSecond-HarmonicGenerationImagesofCollagenIFibrils.BiophysicalJournalVol.881377-1386.Xi.Chen,OledNadiarynkh,SergeyPlotnikov,PaulJCampagnola,Secondharmonicgenerationmicroscopyforquantitativeanalysisofcollagenfibrillar structure.2012,NatureAmerica,10.1038/nprot.2012.009.
Fromthegraph,500mWallowsforoptimizedsignalforanextendedperiodoftime(above).
MAJORRESULTS:• Fresnellensshowntohavea
considerablylessattenuationthantheinitialsphericalbiconcavelens.
• However,thelowerattenuationvalueintroducedanartifact:abroadsecondarysignaloccurring~200μsaftertheinitialpeak.
GOALS:(1)Todesignthelenssystemforanimagingprobeusedforinvivo detectionofcancerwithinthethyroid.
(2)To reducethesignalattenuationthatwasaconsequenceofusingabiconcaveplasticlenstofocustheultrasoundsignalbyexploringaFresnellensinthisconfiguration.
TESTS:• DevelopedaninitialdesignbasedonaFresnellens,was
testedinCodeV,andtestedinalabsetting.• LabTest:Bytheemissionofanultrasonicwavefocused
bytheFresnellensontothetransducerarray,whichcapturedasignalpulsethroughtime-gating.
• Updatedthedesignforanewzonesagtoaccountforacleanersignal.
• Testedthesurfacequalitytodemonstratethepotentialinfluenceonthelensperformance.
:
Acoustic Fresnel Lens Design05/05/2018
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Readthefullreport:http://www2.optics.rochester.edu/workgroups/knox/myweb/opt310-311-files/2017/311/acoustic-TeamAcousticFinalDDD.pdf
Participants:RyanSauer(ProjectCoordinator),NancyAguilera(CustomerLiaison),Yichen Gu(DocumentHandler),DanielGraney(Scribe),WayneKnox(FacultyAdvisor);Customer:URMC/Navalgund Rao
References“MEASUREMENTREPORT:3MHzMatrixArrayTransducer”Imasonic.RIT.3July.2017.Francis,Kalloor Josephetal.“CharacterizationofLensBasedPhotoacousticImagingSystem.”Photoacoustics 8(2017):37–47.PMC .Web.18Nov.2017.“Accura 25(SLA)DataSheet.”3DSystems .2017.“Objet30ProSpecificationSheet.”Stratasys .EdenPrairie,MN.2015.Hadimioglu,B,etal.“High-efficiencyFresnelacousticlenses.”XeroxPaloAltoResearchCenter. 1993.Willis,Karl,etal."Printedoptics:3Dprintingofembeddedopticalelementsforinteractivedevices."Proceedingsofthe25thannualACMsymposiumonUserinterfacesoftwareandtechnology .ACM,2012.“MakerBot Replicator5thGenQuickSpecs”RedStack.“PolyJet MaterialsDataSheet.”Stratasys .EdenPrairie,MN.2017.“AcousticTablesofReference.”Ondacorp .2016.
InitialFresnelSignal(left)andUpdatedFresnelSignal(right)