NSN 6650-00-546-9641

Part Details | OPTICAL INSTRUMENT LENS

6650-00-546-9641 An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see WINDOW, OPTICAL INSTRUMENT. Excludes RETICLE, OPTICAL INSTRUMENT.

Alternate Parts: 6650005469641, 8200149, 6650-00-546-9641, 00-546-9641, 6650005469641, 005469641

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JAN 01, 196300-546-964121884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

LENS,OPTICAL INSTRU | 6650-00-546-9641, 005469641
Cross Reference | NSN 6650-00-546-9641
Part Number Cage Code Manufacturer
6650005469641A00AME.C.A ETABLISSEMENT CENTRALDESAPPROVISIONNEMENTS DES FORCES
820014919200US ARMY ARDEC RDECOM
Technical Data | NSN 6650-00-546-9641
Characteristic Specifications
MATERIAL GLASS OPTICAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE
COMPOUND LENS STYLE DOUBLET
INDIVIDUAL LENS STYLE MENISCUS DIVERGING AND DOUBLE CONVEX
DIAMETER1.400 INCHES NOMINAL
AXIAL THICKNESS0.142 INCHES NOMINAL AND 0.236 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.378 INCHES NOMINAL
COMPOUND LENS EDGE THICKNESS0.333 INCHES NOMINAL
ELEMENT LEFT SURFACE RADIUS6.164 INCHES
ELEMENT RIGHT SURFACE RADIUS2.572 INCHES
EQUIVALENT FOCAL LENGTH13.189 INCHES
BACK FOCAL LENGTH13.192 INCHES
FRONT FOCAL LENGTH12.814 INCHES
REFRACTION INDEX1.5230 NOMINAL
ABBE CONSTANT1.605
FSC APPLICATION DATARANGE FINDER,INTEGRATED WITH FIRE CONTROL EQUIP