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National Stock Number:
6650-01-091-1989
Federal Supply Class:
6650
National Item Identification Number:
010911989
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:
| 12266744 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| AXIAL THICKNESS | 0.425 INCHES MINIMUM AND 0.433 INCHES MAXIMUM | | BACK FOCAL LENGTH | 6.849 INCHES | | DIAMETER | 3.157 INCHES MINIMUM AND 3.158 INCHES MAXIMUM | | ELEMENT LEFT SURFACE RADIUS | 4.249 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 4.249 INCHES | | EQUIVALENT FOCAL LENGTH | 6.849 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE B, TYPE 620-603 MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | SINGLE LENS STYLE | PLANO-CONVEX |
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