NSN 6650-00-078-4092

Part Details | OPTICAL INSTRUMENT LENS

6650-00-078-4092 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: 8620992, 6650-00-078-4092, 00-078-4092, 6650000784092, 000784092

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JAN 01, 196300-078-409221884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

Cross Reference | NSN 6650-00-078-4092
Part Number Cage Code Manufacturer
862099219204ARMY, UNITED STATES DEPARTMENT OFTHE
Technical Data | NSN 6650-00-078-4092
Characteristic Specifications
COMPOUND LENS STYLE DOUBLET
LENGTH1.300 INCHES NOMINAL
DIAMETER1.297 INCHES MINIMUM AND 1.300 INCHES MAXIMUM
AXIAL THICKNESS0.210 INCHES NOMINAL AND 0.300 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.490 INCHES MINIMUM AND 0.530 INCHES MAXIMUM
COMPOUND LENS EDGE THICKNESS0.463 INCHES NOMINAL
ELEMENT LEFT SURFACE RADIUS8.050 INCHES AND 2.799 INCHES
ELEMENT RIGHT SURFACE RADIUS2.799 INCHES AND -10.130 INCHES
EQUIVALENT FOCAL LENGTH10.630 INCHES
FRONT FOCAL LENGTH10.497 INCHES