5305-00-899-5143 SETSCREW Index 6650-00-899-5145 LENS,OPTICAL INSTRUMENT

National Stock Number:
6650-00-899-5144

Federal Supply Class:
6650

National Item Identification Number:
008995144

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:
858731619200US ARMY ARDEC RDECOM


Techincal Specification:
ELEMENT RIGHT SURFACE RADIUS-2.347 INCHES AND -9.009 INCHES
ELEMENT LEFT SURFACE RADIUS3.049 INCHES AND -2.347 INCHES
ABBE CONSTANT64.500 AND 33.800
AXIAL THICKNESS0.188 INCHES NOMINAL AND 0.094 INCHES NOMINAL
BACK FOCAL LENGTH5.269 INCHES
COMPOUND LENS EDGE THICKNESS0.225 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.282 INCHES NOMINAL
COMPOUND LENS STYLEDOUBLET
DIAMETER0.920 INCHES NOMINAL
EQUIVALENT FOCAL LENGTH-5.418 INCHES
INDIVIDUAL LENS STYLEDOUBLE CONVEX AND MENISCUS DIVERGING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALGLASS OPTICAL
REFRACTION INDEX1.5170 NOMINAL AND 1.6170 NOMINAL


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