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National Stock Number:
6650-00-964-9277
Federal Supply Class:
6650
National Item Identification Number:
009649277
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:
| 8626473 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | 1.851 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 2.731 INCHES | | ABBE CONSTANT | 60.300 AND 29.300 | | BACK FOCAL LENGTH | 3.095 INCHES | | AXIAL THICKNESS | 0.700 INCHES NOMINAL AND 0.126 INCHES NOMINAL | | COMPOUND LENS EDGE THICKNESS | 0.250 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.826 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 2.069 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 3.715 INCHES | | FRONT FOCAL LENGTH | 2.269 INCHES | | FSC APPLICATION DATA | TELESCOPE INTEGRATED WITH FIRE CONTROL EQUIP | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND DOUBLE CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 2.2690 NOMINAL AND 1.6200 NOMINAL |
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