NSN 6650-00-382-1898

Part Details | OPTICAL INSTRUMENT LENS

6650-00-382-1898 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: 3000088, 3000088, 118923PC2XPC3, LD172589GP4, LD172589GP130, 3000088, 6650-00-382-1898, 00-382-1898, 6650003821898, 003821898

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JAN 01, 196300-382-189821884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

Cross Reference | NSN 6650-00-382-1898
Part Number Cage Code Manufacturer
300008852808DUNLIN MANUFACTURING / SKYPENINDUSTRIES INC
300008810001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
118923PC2XPC310001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
LD172589GP410001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
LD172589GP13010001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
300008853711NAVAL SEA SYSTEMS COMMAND
Technical Data | NSN 6650-00-382-1898
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
DIAMETER1.417 INCHES NOMINAL
AXIAL THICKNESS0.276 INCHES NOMINAL AND 0.118 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.394 INCHES NOMINAL
COMPOUND LENS EDGE THICKNESS0.324 INCHES NOMINAL
ELEMENT LEFT SURFACE RADIUS-2.323 INCHES AND 4.507 INCHES
ELEMENT RIGHT SURFACE RADIUS-2.323 INCHES AND -18.915 INCHES
EQUIVALENT FOCAL LENGTH7.147 INCHES
BACK FOCAL LENGTH6.931 INCHES
FRONT FOCAL LENGTH7.113 INCHES
REFRACTION INDEX1.5720 NOMINAL AND 1.6190 NOMINAL
ABBE CONSTANTB57.400$$B36.600
FSC APPLICATION DATAFIRE CONTROL,TELESCOPE,MK 74