6650-00-155-1756 PRISM,OPTICAL INSTRUMENT Index 1240-00-155-1758 LENS

National Stock Number:
6650-00-155-1757

Federal Supply Class:
6650

National Item Identification Number:
001551757

Description:
LENS,OPTICAL INSTRUMENT

Detail:
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.


Manufacturer Information:
178697PC810001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
278697PC810001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
ELEMENT LEFT SURFACE RADIUS-1.031 INCHES AND 2.574 INCHES
ELEMENT RIGHT SURFACE RADIUS-1.031 INCHES AND -6.023 INCHES
ABBE CONSTANT57.400 AND 36.600
AXIAL THICKNESS0.216 INCHES NOMINAL AND 0.082 INCHES NOMINAL
BACK FOCAL LENGTH3.444 INCHES
COMPOUND LENS EDGE THICKNESS0.279 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.299 INCHES NOMINAL
COMPOUND LENS STYLEDOUBLET
DIAMETER0.630 INCHES NOMINAL
EQUIVALENT FOCAL LENGTH3.586 INCHES
FRONT FOCAL LENGTH3.539 INCHES
FSC APPLICATION DATAFIRE CONTROL,RANGE FINDER MK 15 MOD 4
INDIVIDUAL LENS STYLEDOUBLE CONVEX AND MENISCUS DIVERGING
MATERIAL DOCUMENT AND CLASSIFICATIONJAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALGLASS OPTICAL
REFRACTION INDEX1.5720 NOMINAL AND 1.6170 NOMINAL


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