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National Stock Number:
6650-00-503-3906
Federal Supply Class:
6650
National Item Identification Number:
005033906
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:
| 5033906 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| ABBE CONSTANT | 33.700 AND 64.500 | | AXIAL THICKNESS | 0.252 INCHES NOMINAL AND 0.108 INCHES NOMINAL | | BACK FOCAL LENGTH | 4.532 INCHES OR 4.728 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.267 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.360 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.220 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 4.790 INCHES OR 4.800 INCHES | | FSC APPLICATION DATA | TELESCOPE,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5170 MINIMUM AND 1.6490 MAXIMUM |
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