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National Stock Number: 6650-00-789-4015
Federal Supply Class: 6650
National Item Identification Number: 007894015
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.
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Manufacturer Information:
8566941 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
ELEMENT RIGHT SURFACE RADIUS | 1.270 INCHES | ELEMENT LEFT SURFACE RADIUS | 1.270 INCHES | ABBE CONSTANT | 59.600 | AXIAL THICKNESS | 0.118 INCHES MINIMUM AND 0.134 INCHES MAXIMUM | BACK FOCAL LENGTH | 2.369 INCHES | DIAMETER | 0.942 INCHES MINIMUM AND 0.945 INCHES MAXIMUM | EQUIVALENT FOCAL LENGTH | 2.452 INCHES | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, GRADE B, TYPE 518-596 MIL SPEC SINGLE MATERIAL RESPONSE | MATERIAL | GLASS OPTICAL | REFRACTION INDEX | 1.5180 NOMINAL | SINGLE LENS STYLE | PLANO-CONVEX | SPECIAL FEATURES | FRONT AND BACK SURFACES COATED WITH MAGNESIUM FLUORIDE |
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