NSN 6650-00-073-8842

Part Details | OPTICAL INSTRUMENT LENS

6650-00-073-8842 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: 8626214, 6650-00-073-8842, 00-073-8842, 6650000738842, 000738842

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JAN 01, 196300-073-884221884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

LENS,OPTICAL INSTRU | 6650-00-073-8842, 000738842
Cross Reference | NSN 6650-00-073-8842
Part Number Cage Code Manufacturer
862621419200US ARMY ARDEC RDECOM
Technical Data | NSN 6650-00-073-8842
Characteristic Specifications
COMPOUND LENS STYLE DOUBLET
INDIVIDUAL LENS STYLE DOUBLE CONVEX AND PLANO-CONCAVE
DIAMETER1.097 INCHES MINIMUM AND 1.103 INCHES MAXIMUM
AXIAL THICKNESS0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM AND 0.092 INCHES MINIMUM AND 0.112 INCHES MAXIMUM
COMPOUND LENS OVERALL AXIAL THICKNESS0.492 INCHES MINIMUM AND 0.532 INCHES MAXIMUM
ELEMENT LEFT SURFACE RADIUS1.262 INCHES
ELEMENT RIGHT SURFACE RADIUS1.806 INCHES
EQUIVALENT FOCAL LENGTH2.901 INCHES
BACK FOCAL LENGTH2.518 INCHES
REFRACTION INDEX1.5170 NOMINAL AND 1.6490 NOMINAL
ABBE CONSTANTB64.500$$B33.800
SPECIAL FEATURESFRONT AND BACK SURFACES COATED WITH MAGNESIUM FLUORIDE
FSC APPLICATION DATATELESCOPE PANORAMIC M113