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National Stock Number:
6650-00-683-9128
Federal Supply Class:
6650
National Item Identification Number:
006839128
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:
| 8598954 | 19200 | US ARMY ARDEC RDECOM | | MIL013830 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| ELEMENT RIGHT SURFACE RADIUS | 1.511 INCHES | | ELEMENT LEFT SURFACE RADIUS | 2.326 INCHES | | ABBE CONSTANT | 57.400 AND 30.900 | | AXIAL THICKNESS | 0.233 INCHES NOMINAL AND 0.107 INCHES NOMINAL | | BACK FOCAL LENGTH | 3.335 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.218 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.340 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.100 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 3.500 INCHES | | FSC APPLICATION DATA | SIGHT,INFINITY,M44C,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5722 NOMINAL AND 1.6890 NOMINAL |
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