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National Stock Number:
6650-00-692-1528
Federal Supply Class:
6650
National Item Identification Number:
006921528
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:
| 8270608 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT RIGHT SURFACE RADIUS | 3.481 INCHES | | ELEMENT LEFT SURFACE RADIUS | 1.391 INCHES | | ABBE CONSTANT | 58.800 | | AXIAL THICKNESS | 0.190 INCHES NOMINAL | | BACK FOCAL LENGTH | 1.566 INCHES | | DIAMETER | 1.063 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 1.651 INCHES | | FSC APPLICATION DATA | SIGHT PERISCOPE M28,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6110 NOMINAL | | SINGLE LENS STYLE | DOUBLE CONVEX |
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