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National Stock Number:
6650-00-382-0924
Federal Supply Class:
6650
National Item Identification Number:
003820924
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:
| 220588PC8 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | G8840PC8 | 34993 | KEUFFEL AND ESSER CO LSE OPNS |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -154.0 MILLIMETERS AND 18.9 MILLIMETERS | | ELEMENT RIGHT SURFACE RADIUS | -18.9 MILLIMETERS AND 47.6 MILLIMETERS | | ABBE CONSTANT | 36.800 AND 51.200 | | BACK FOCAL LENGTH | 87.500 CENTIMETERS | | AXIAL THICKNESS | 2.0 MILLIMETERS NOMINAL AND 4.0 MILLIMETERS NOMINAL | | COMPOUND LENS EDGE THICKNESS | 5.0 MILLIMETERS NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | COMPOUND LENS OVERALL AXIAL THICKNESS | 6.0 MILLIMETERS NOMINAL | | DIAMETER | 17.0 MILLIMETERS NOMINAL | | EQUIVALENT FOCAL LENGTH | 87.480 CENTIMETERS | | FRONT FOCAL LENGTH | 84.560 CENTIMETERS | | INDIVIDUAL LENS STYLE | DOUBLE CONCAVE AND DOUBLE CONVEX | | MATERIAL | BARIUM FLINT GLASS | | REFRACTION INDEX | 1.6158 NOMINAL AND 1.5408 NOMINAL |
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