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National Stock Number:
6650-00-382-1808
Federal Supply Class:
6650
National Item Identification Number:
003821808
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:
| 248578PC3-4 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | 248578PC3-4 | 53711 | NAVAL SEA SYSTEMS COMMAND | | LD133777ITEM5 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | LD133777ITEM5 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -8.944 INCHES AND 1.970 INCHES | | ELEMENT RIGHT SURFACE RADIUS | -3.228 INCHES AND 1.970 INCHES | | ABBE CONSTANT | 63.500 AND 29.300 | | BACK FOCAL LENGTH | 5.759 INCHES | | AXIAL THICKNESS | 0.098 INCHES NOMINAL AND 0.142 INCHES NOMINAL | | COMPOUND LENS EDGE THICKNESS | 0.320 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.240 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.161 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 5.761 INCHES | | FRONT FOCAL LENGTH | 5.909 INCHES | | INDIVIDUAL LENS STYLE | MENISCUS CONVERGING AND DOUBLE CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5110 NOMINAL AND 1.7200 NOMINAL |
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