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National Stock Number:
6650-00-382-1958
Federal Supply Class:
6650
National Item Identification Number:
003821958
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:
| LD172600PC23 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | LD172600PC23 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| ABBE CONSTANT | 57.400 AND 36.600 | | BACK FOCAL LENGTH | 18.424 INCHES | | AXIAL THICKNESS | 0.394 INCHES NOMINAL | | COMPOUND LENS EDGE THICKNESS | 0.746 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.787 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 2.598 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 18.905 INCHES | | FRONT FOCAL LENGTH | 18.890 INCHES | | FSC APPLICATION DATA | FIRE CONTROL,PERISCOPE MK30 MOD 2 | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING | | MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5724 NOMINAL AND 1.6168 NOMINAL |
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