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National Stock Number:
6650-00-789-4016
Federal Supply Class:
6650
National Item Identification Number:
007894016
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:
| 8566943 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT RIGHT SURFACE RADIUS | 24.877 INCHES | | ELEMENT LEFT SURFACE RADIUS | 5.239 INCHES | | ABBE CONSTANT | 64.500 | | AXIAL THICKNESS | 0.366 INCHES MINIMUM AND 0.382 INCHES MAXIMUM | | BACK FOCAL LENGTH | 12.444 INCHES | | DIAMETER | 2.299 INCHES MINIMUM AND 2.302 INCHES MAXIMUM | | EQUIVALENT FOCAL LENGTH | 12.754 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, GRADE B, TYPE 517-645 MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5170 NOMINAL | | SINGLE LENS STYLE | MENISCUS DIVERGING |
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