Lens Modeling | Fairchild CAM/CMOS-2K.LS instruction

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 C• 31 of 42

Image 31

Fairchild CAM/CMOS-2K.LS user manual Lens Modeling

Contents

OWL Camera Series CAM/CMOS-2K.LS EMC EMC Conformance Terminology CAM/CMOS-2K.LS Line Scan Camera Rev B Fairchild Imaging, Inc Table of Contents Camera Link Introduction TroubleshootingHandling Instructions Product Support Usability Camera HighlightsDescription Programmability Full Spectrum of Applications Camera Specification RDI and Mrdi Performance Specification Link Thermal Considerations RDI and Mrdi Responsivity Curve Image Sensor Page Connectors, Pinouts, and Cables Installation OverviewCamera Hardware Interface Camera Pin # Frame Grabber Pin # Channel Link Signal Power Supply Hirose Receptacle LED Indicator Status LampBack View of CAM/CMOS 2K.LS Camera Control CommandsQuick Start with the Camera LinkTM Interface You must cover lens when performing this operation SSM LED Command Definition Summary Camera Command Summary GSN Four Modes for Synchronizing with the CAM/CMOS 2K.LS Summary of CAM/CMOS-2K.LS Modes Line Start End 1 -- Mode 1 Freerunning 2 -- Mode 2 ExSync Synchronization ExSync Camera Input LineValid Camera Output ElectShutter CAM/CMOS-2K.LS Synchronization Timing Values Mechanical and Optical Guidance Camera Dimensions and Mounting Facilities Lens Mount Extender Tube LensingPage Page Light Sources LensesPositioning Accuracy of the Sensor Chip in the Camera Illumination Lens Modeling Preventing ESD Damage Cleaning the Sensor WindowHandling Instructions Electrostatic Discharge Other Areas You Should Check TroubleshootingCheck the Obvious Things Out First Use the Camera Control Interface to Perform Checks Horizontal Lines or Patterns in Output Data Clocking/Output SignalsNo Output Or Non Specification Output Everything Seems To Be Working, But No Image Product Support Camera LinkTM Introduction Channel Link is a Widely-Used Signaling Method Camera Control Signals Video Data SignalsCommunication Port Assignments PowerFor More Information on CameraLinkTM Figure A.1 Channel Link Operation Camera Link Connections -- the MDR 26-Pin ConnectorPage Page Figure A.4 Camera Link Cable