NSN 6650-00-503-7657

Part Details | OPTICAL INSTRUMENT LENS

6650-00-503-7657 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: 5037657, 6650-00-503-7657, 00-503-7657, 6650005037657, 005037657

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JAN 01, 196300-503-765721884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

LENS,OPTICAL INSTRU | 6650-00-503-7657, 005037657
Cross Reference | NSN 6650-00-503-7657
Part Number Cage Code Manufacturer
503765719200US ARMY ARDEC RDECOM
Technical Data | NSN 6650-00-503-7657
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 DOUBLE CONVEX AND MENISCUS DIVERGING
DIAMETER0.561 INCHES NOMINAL
AXIAL THICKNESS0.124 INCHES NOMINAL AND 0.053 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.177 INCHES NOMINAL
COMPOUND LENS EDGE THICKNESS0.146 INCHES NOMINAL
ELEMENT LEFT SURFACE RADIUS1.449 INCHES
ELEMENT RIGHT SURFACE RADIUS0.967 INCHES
EQUIVALENT FOCAL LENGTH2.362 INCHES
BACK FOCAL LENGTH2.276 INCHES
REFRACTION INDEX1.5170 NOMINAL AND 1.6490 NOMINAL
ABBE CONSTANTB64.500$$B33.700
FSC APPLICATION DATATELESCOPE,MI,INTEGRATED WITH FIRE CONTROL EQUIPMENT