NSN 6650-00-157-4145

Part Details | OPTICAL INSTRUMENT LENS

6650-00-157-4145 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: G8111PC12, 203035PC12, 203035PC12, 6650-00-157-4145, 00-157-4145, 6650001574145, 001574145

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JAN 01, 196300-157-414521884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

LENS,OPTICAL INSTRU | 6650-00-157-4145, 001574145
Cross Reference | NSN 6650-00-157-4145
Part Number Cage Code Manufacturer
G8111PC1274067KEUFFEL AND ESSER CO
203035PC1210001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
203035PC1253711NAVAL SEA SYSTEMS COMMAND
Technical Data | NSN 6650-00-157-4145
Characteristic Specifications
MATERIAL GLASS OPTICAL
COMPOUND LENS STYLE DOUBLET
INDIVIDUAL LENS STYLE DOUBLE CONVEX AND MENISCUS DIVERGING
DIAMETER22.0 MILLIMETERS NOMINAL
AXIAL THICKNESS4.0 MILLIMETERS NOMINAL AND 2.0 MILLIMETERS NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS6.0 MILLIMETERS NOMINAL
COMPOUND LENS EDGE THICKNESS6.0 MILLIMETERS NOMINAL
ELEMENT LEFT SURFACE RADIUS168.1 MILLIMETERS AND -48.9 MILLIMETERS
ELEMENT RIGHT SURFACE RADIUS48.9 MILLIMETERS AND 151.6 MILLIMETERS
EQUIVALENT FOCAL LENGTH19.532 CENTIMETERS
BACK FOCAL LENGTH19.330 CENTIMETERS
FRONT FOCAL LENGTH19.327 CENTIMETERS
REFRACTION INDEX1.6170 NOMINAL AND 1.5185 NOMINAL
ABBE CONSTANTB36.600$$B59.500
END ITEM IDENTIFICATIONRANGEFINDER MK42