1240-00-796-9950 WINDOW,OPTICAL INSTRUMENT Index 1240-00-796-9952 SCALE

National Stock Number:
6650-00-796-9951

Federal Supply Class:
6650

National Item Identification Number:
007969951

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:
157553010001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER


Techincal Specification:
ELEMENT LEFT SURFACE RADIUS13.0 MILLIMETERS
ELEMENT RIGHT SURFACE RADIUS0.0 MILLIMETERS
ABBE CONSTANT64.500
AXIAL THICKNESS4.5 MILLIMETERS NOMINAL
BACK FOCAL LENGTH2.213 CENTIMETERS
DIAMETER16.5 MILLIMETERS NOMINAL
EQUIVALENT FOCAL LENGTH2.510 CENTIMETERS
FRONT FOCAL LENGTH2.510 CENTIMETERS
MATERIALGLASS OPTICAL
REFRACTION INDEX1.5170 NOMINAL
SINGLE LENS STYLEPLANO-CONVEX
SPECIAL FEATURESGLASS OPTICAL SURFACES TO BE COATED WITH REFLECTION REDUCING FILM


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