1240-00-382-0432 WINDOW,OPTICAL INSTRUMENT Index 1240-00-382-0435 SCALE,INDEX

National Stock Number:
6650-00-382-0433

Federal Supply Class:
6650

National Item Identification Number:
003820433

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:
105476PC2210001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
105476PC224L762BAUSCH AND LOMB INC OPTICAL SYSTEMS DIV OPTICAL CENTER
105476PC2253711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
ELEMENT RIGHT SURFACE RADIUS-11.0 MILLIMETERS AND 15.0 MILLIMETERS
ELEMENT LEFT SURFACE RADIUS60.0 MILLIMETERS AND 11.0 MILLIMETERS
ABBE CONSTANT38.500 AND 59.600
AXIAL THICKNESS1.0 MILLIMETERS NOMINAL AND 4.0 MILLIMETERS NOMINAL
BACK FOCAL LENGTH2.727 CENTIMETERS
COMPOUND LENS EDGE THICKNESS4.0 MILLIMETERS NOMINAL
COMPOUND LENS STYLEDOUBLET
COMPOUND LENS OVERALL AXIAL THICKNESS5.0 MILLIMETERS NOMINAL
DIAMETER12.3 MILLIMETERS NOMINAL
EQUIVALENT FOCAL LENGTH2.475 CENTIMETERS
FRONT FOCAL LENGTH2.439 CENTIMETERS
INDIVIDUAL LENS STYLEMENISCUS CONVERGING AND DOUBLE CONVEX
MATERIAL DOCUMENT AND CLASSIFICATIONJAN-G-174 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALGLASS OPTICAL
REFRACTION INDEX1.6160 NOMINAL AND 1.5390 NOMINAL


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