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National Stock Number:
6650-00-903-6670
Federal Supply Class:
6650
National Item Identification Number:
009036670
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:
| 8216005 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -4.701 INCHES AND 2.370 INCHES | | ELEMENT RIGHT SURFACE RADIUS | -2.370 INCHES AND 2.370 INCHES | | ABBE CONSTANT | 29.300 AND 60.300 | | AXIAL THICKNESS | 0.122 INCHES NOMINAL AND 0.750 INCHES NOMINAL | | BACK FOCAL LENGTH | 10.198 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.687 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.872 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 2.370 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 10.812 INCHES | | FRONT FOCAL LENGTH | 9.326 INCHES | | FSC APPLICATION DATA | PERISCOPE,XM44 | | INDIVIDUAL LENS STYLE | DOUBLE 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 1.6200 NOMINAL |
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