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• OPC-40100-2 – OPC UA for Machine Vision - Part 2: Asset Management and Condition Monitoring
  9.7 ILensType ObjectType Definition
  HasProperty Variable Resolution 0:Double 0:PropertyType O 2:Maintenance 0:HasProperty Variable BackFocalLength 0:Double 0:PropertyType O 2:Maintenance 0:HasProperty Variable MinimumWorkingDistance 0:Double 0:PropertyType ... light passing through the lens is focused and is given in millimeters. The BackFocalLength property is the distance from the vertex of the last optical surface of the system