康耐视 In-Sight 7000 系列视觉系统（技术手册）.pdf
TechnicalBulletin:In-Sight7000SeriesM12Lens
Configurationwithf6Aperture
Author:SamanthaFrost
Published:May29,2013
Revision:1.1
CognexCorporation
TechnicalBulletin
Overview
TheintegratedIn-Sight7000seriesvisionsystemswillbeginshippingwithanf6apertureM12lensonJune
10th2013.Thisisanenhancementoverthef2apertureM12lensonallintegratedvisionsystems.Thisnew
lenswillprovideenhanceddepthoffieldandprovideimprovedfocusretentionunderconditionsofmachine
vibrationforallmachinevisionapplications.However,LightIntensityorExposureadjustmentsmaybe
necessarytoaccommodatethelenssincetheapertureissmaller.
Benefits
Thebenefitsofthenewlensinclude:
•Enhanceddepthoffieldforlargerstaticfocalrange.
•Improvedfocusretentionunderconditionsofmachinevibration.
•MoregranularityinsettingLightIntensity.Forexample:Thef2lens–imagesaturationwas
reachedwithLightIntensitybetween10-30setting.Whereaswiththef6lens,imagesaturation
wasreachedat80-100setting.
Changestocurrentsystems
Duetothesmallerapertureofthef6lenses,customerswithacurrentinstallbaseofintegratedIn-Sight7000
seriesvisionsystemswillneedtoadjustLightIntensityorExposuretoachieveequivalentimagebrightness
withthenewlenses.Itisalsorecommendedthattheapplicationtoolsandcalibration(ifany)bere-runto
verifythecurrentlight/lenssettingofthemachinevisionsystem.
2
LightIntensityAdjustments
Belowisasamplingofimagebrightnesswithawhitelight,setexposure,andvaryingLightIntensityvalues
setforeachlens.Ahistogramwastakenatthecenterpointoftheimageandtheimagebrightnesswas
notedforeachLightIntensityvalueofeachlens.Alargersamplingofvaluescanbefoundinchartform
belowintheImageBrightnessvs.LightIntensitySettingssectionofthiste