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National Stock Number:
6650-00-828-6552
Federal Supply Class:
6650
National Item Identification Number:
008286552
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:
| 10512966 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | 3.390 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 3.390 INCHES | | ABBE CONSTANT | 29.300 AND 57.200 | | BACK FOCAL LENGTH | 5.429 INCHES | | AXIAL THICKNESS | 0.200 INCHES NOMINAL AND 0.700 INCHES NOMINAL | | COMPOUND LENS EDGE THICKNESS | 0.625 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.900 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 2.435 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 5.354 INCHES | | FSC APPLICATION DATA | TELESCOPE,ELBOW T175E2 AND T176E3 INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INDIVIDUAL LENS STYLE | PLANO-CONCAVE AND DOUBLE CONVEX | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.7200 NOMINAL AND 1.6109 NOMINAL |
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