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National Stock Number:
6650-00-382-1715
Federal Supply Class:
6650
National Item Identification Number:
003821715
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:
| 944640 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -1.297 INCHES AND 2.674 INCHES | | ELEMENT RIGHT SURFACE RADIUS | -1.297 INCHES AND -4.898 INCHES | | ABBE CONSTANT | 58.800 AND 29.300 | | BACK FOCAL LENGTH | 3.073 INCHES | | AXIAL THICKNESS | 0.437 INCHES NOMINAL AND 0.118 INCHES NOMINAL | | COMPOUND LENS EDGE THICKNESS | 0.334 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.555 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.732 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 3.302 INCHES | | FRONT FOCAL LENGTH | 3.180 INCHES | | FSC APPLICATION DATA | 1. FIRE CONTROL,TELESCOPE,MK97 MOD 1 | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6110 NOMINAL AND 1.7200 NOMINAL |
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