6650-00-503-0888 PRISM,OPTICAL INSTRUMENT Index 6650-00-542-8518 SPACER,OPTICAL ELEMENT

National Stock Number:
6650-00-507-9256

Federal Supply Class:
6650

National Item Identification Number:
005079256

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:
6650005079256A00AME.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE
820000919200US ARMY ARDEC RDECOM


Techincal Specification:
ELEMENT RIGHT SURFACE RADIUS3.117 INCHES
ELEMENT LEFT SURFACE RADIUS42.390 MILLIMETERS
ABBE CONSTANT58.600 AND 38.000
AXIAL THICKNESS0.202 INCHES NOMINAL AND 0.150 INCHES NOMINAL
BACK FOCAL LENGTH14.932 INCHES
COMPOUND LENS EDGE THICKNESS0.309 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.352 INCHES NOMINAL
COMPOUND LENS STYLEDOUBLET
DIAMETER1.500 INCHES NOMINAL
EQUIVALENT FOCAL LENGTH14.937 INCHES
FSC APPLICATION DATAFINDER,RANGE,T42E1,INTEGRATED WITH FIRE CONTROL EQUIPMENT
INDIVIDUAL LENS STYLEPLANO-CONCAVE AND MENISCUS DIVERGING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-174, CLASS 1, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALGLASS OPTICAL
REFRACTION INDEX1.5230 NOMINAL AND 1.6050 NOMINAL


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