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National Stock Number:
6650-00-995-5741
Federal Supply Class:
6650
National Item Identification Number:
009955741
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:
| 10514394 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT RIGHT SURFACE RADIUS | 0.753 INCHES | | ELEMENT LEFT SURFACE RADIUS | 1.732 INCHES | | ABBE CONSTANT | 33.700 AND 64.500 | | AXIAL THICKNESS | 0.063 INCHES NOMINAL AND 0.335 INCHES NOMINAL | | BACK FOCAL LENGTH | 4.991 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.375 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.398 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 0.906 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 4.392 INCHES | | FRONT FOCAL LENGTH | 4.616 INCHES | | FSC APPLICATION DATA | BINOCULAR,XM18 | | INDIVIDUAL LENS STYLE | DOUBLE CONCAVE AND DOUBLE CONVEX | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6490 NOMINAL AND 1.5170 NOMINAL |
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