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National Stock Number:
6650-00-393-0318
Federal Supply Class:
6650
National Item Identification Number:
003930318
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:
| 11733408 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -7.353 INCHES AND 7.353 INCHES | | ABBE CONSTANT | 44.300 | | BACK FOCAL LENGTH | -6.026 INCHES | | AXIAL THICKNESS | 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM | | DIAMETER | 3.527 INCHES MINIMUM AND 3.530 INCHES MAXIMUM | | EQUIVALENT FOCAL LENGTH | -5.963 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6130 NOMINAL | | SINGLE LENS STYLE | DOUBLE CONCAVE |
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