Nikon MRDI user manual Lens Modeling

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4.9 Lens Modeling

Several camera companies have included this and like information in their manuals. For reference material it is very useful.

The focal point is the point at which the image of an infinitely distant object is brought to focus. The effective focal length (f’) is the distance from the second principal point to the second focal point. The back focal length (BFL) is the distance from the image side of the lens surface to the second focal point. The object distance (OD) is the distance from the first principal point to the object.

Figure 4.9.1

Fairchild Imaging • CAM/CMOS-2K.LS Line Scan Camera User’s Manual • Rev A • 30 of 41

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Contents OWL Camera Series CAM/CMOS-2K.LS CAM/CMOS-2K.LS Line Scan Camera Rev a Fairchild Imaging, Inc TerminologyTable of Contents Product Support TroubleshootingHandling Instructions Camera Link IntroductionProgrammability Camera HighlightsDescription UsabilityCamera Specification RDI and Mrdi Performance Specification Full Spectrum of ApplicationsThermal Considerations LinkRDI and Mrdi Responsivity Curve Image Sensor Page Installation Overview Connectors, Pinouts, and CablesCamera Hardware Interface Power Supply Camera Pin # Frame Grabber Pin # Channel Link SignalLED Indicator Status Lamp Hirose HR25-7TR-4P ReceptacleBack View of CAM/CMOS 2K.LS Commands Camera ControlQuick Start with the Camera LinkTM Interface You must cover lens when performing this operation SSM LED Camera Command Summary Command Definition SummaryFour Modes for Synchronizing with the CAM/CMOS 2K.LS GSNSummary of CAM/CMOS-2K.LS Modes Line Start End 2 -- Mode 1 Freerunning 3 -- Mode 2 ExSync Synchronization Data Camera Output ElectShutter Synchronization Timing Values CAM/CMOS-2K.LSCamera Dimensions and Mounting Facilities Mechanical and Optical GuidanceLensing Lens Mount Extender TubePage Page Illumination LensesPositioning Accuracy of the Sensor Chip in the Camera Light SourcesLens Modeling Electrostatic Discharge Cleaning the Sensor WindowHandling Instructions Preventing ESD DamageUse the Camera Control Interface to Perform Checks TroubleshootingCheck the Obvious Things Out First Other Areas You Should CheckEverything Seems To Be Working, But No Image Data Clocking/Output SignalsNo Output Or Non Specification Output Horizontal Lines or Patterns in OutputProduct Support Channel Link is a Widely-Used Signaling Method Camera LinkTM IntroductionVideo Data Signals Camera Control SignalsCommunication Power Port AssignmentsFor More Information on CameraLinkTM Camera Link Connections -- the MDR 26-Pin Connector Figure A.1 Channel Link OperationPage Page Figure A.4 Camera Link Cable