ANNEXZEISS List of abbreviations Axioscope 5/7/Vario132 430035-7344-001 03/20186 ANNEX6.1 List of abbreviationsAC Alternating CurrentACR Automatic Component RecognitionAF Width across flatsA-Plan Achromatic objectives with improved flatness of field (ICS optical products)B/BF Bright fieldCCD Charge-coupled DeviceCSA Canadian Standards AssociationC-DIC Differential Interference Contrast in circular polarized lightCGT Cover glass thicknessDF Dark fieldd Diameter (e.g. of filters)DC Direct CurrentDIC Differential Interference ContrastDIN Deutsches Institut für Normung (German Institute for Standardization)EC European CommunityEN Euronorm (European Standard)Ergo Ergonomic/ErgonomicsFL Fluorescencefoc. focusableGW Suitable for glasses wearersHAL Halogen lamp (illuminator)HBO Mercury Vapor Short Arc Lamp for Fluorescence (illuminator)HDMI High Definition Multimedia InterfaceICS Infinity Color-Corrected SystemIEC International Electrotechnical CommissionIP Internal ProtectionISCP Infinity Space Camera PortISO International Organization for StandardizationLED Light Emitting DiodeLM Light Managern D Refractive Index for the D-line (sodium)OSD On-screen displayPCBA Printed Circuit Board Assemblyphot photographic