NSN 6650-00-119-3966

Part Details | OPTICAL INSTRUMENT LENS

6650-00-119-3966 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: 8644284, 6650-00-119-3966, 00-119-3966, 6650001193966, 001193966

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66OCT 18, 196800-119-396621884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

LENS,OPTICAL INSTRU | 6650-00-119-3966, 001193966
Cross Reference | NSN 6650-00-119-3966
Part Number Cage Code Manufacturer
864428419200US ARMY ARDEC RDECOM
Technical Data | NSN 6650-00-119-3966
Characteristic Specifications
COMPOUND LENS STYLE DOUBLET
INDIVIDUAL LENS STYLE DOUBLE CONCAVE AND DOUBLE CONVEX
DIAMETER3.097 INCHES MINIMUM AND 3.100 INCHES MAXIMUM
AXIAL THICKNESS0.297 INCHES MINIMUM AND 0.317 INCHES MAXIMUM AND 0.705 INCHES MINIMUM AND 0.725 INCHES MAXIMUM
COMPOUND LENS OVERALL AXIAL THICKNESS1.002 INCHES MINIMUM AND 1.042 INCHES MAXIMUM
ELEMENT LEFT SURFACE RADIUS143.191 MILLIMETERS
ELEMENT RIGHT SURFACE RADIUS6.256 INCHES
EQUIVALENT FOCAL LENGTH16.560 INCHES
BACK FOCAL LENGTH15.807 INCHES
REFRACTION INDEX1.6490 NOMINAL AND 1.5880 NOMINAL
ABBE CONSTANTB33.800$$B53.400
SPECIAL FEATURESFRONT AND BACK SURFACES COATED WITH MAGNESIUM FLUORIDE
FSC APPLICATION DATACOLLIMATOR