NSN 6650-00-531-6357

Part Details | OPTICAL INSTRUMENT LENS

6650-00-531-6357 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: 5316357, 6650-00-531-6357, 00-531-6357, 6650005316357, 005316357

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JAN 01, 196300-531-635721884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

LENS,OPTICAL INSTRU | 6650-00-531-6357, 005316357
Cross Reference | NSN 6650-00-531-6357
Part Number Cage Code Manufacturer
531635719200US ARMY ARDEC RDECOM
Technical Data | NSN 6650-00-531-6357
Characteristic Specifications
COMPOUND LENS STYLE DOUBLET
INDIVIDUAL LENS STYLE DOUBLE CONCAVE AND DOUBLE CONVEX
DIAMETER1.424 INCHES MINIMUM AND 1.427 INCHES MAXIMUM
AXIAL THICKNESS0.064 INCHES NOMINAL AND 0.579 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.633 INCHES MINIMUM AND 0.653 INCHES MAXIMUM
COMPOUND LENS EDGE THICKNESS0.542 INCHES NOMINAL
ELEMENT LEFT SURFACE RADIUS3.255 INCHES
ELEMENT RIGHT SURFACE RADIUS1.503 INCHES
EQUIVALENT FOCAL LENGTH8.090 INCHES
BACK FOCAL LENGTH8.944 INCHES
REFRACTION INDEX1.6170 MINIMUM AND 1.5170 MINIMUM
ABBE CONSTANTB36.600$$B64.500
SPECIAL FEATURESREFLECTION REDUCING TREATMENT ON FRONT SURFACE,JAN-M-621
FSC APPLICATION DATATELESCOPE BC M65