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National Stock Number:
6650-00-531-6908
Federal Supply Class:
6650
National Item Identification Number:
005316908
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:
| 5316908 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -6.082 MILLIMETERS AND 7.390 MILLIMETERS | | ELEMENT RIGHT SURFACE RADIUS | -35.390 MILLIMETERS AND -6.082 MILLIMETERS | | ABBE CONSTANT | 64.500 AND 36.600 | | AXIAL THICKNESS | 0.393 INCHES NOMINAL AND 0.277 INCHES NOMINAL | | BACK FOCAL LENGTH | 13.744 INCHES | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.670 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 2.255 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 14.130 INCHES | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, GRADE C, TYPE 517-645 MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5170 NOMINAL AND 1.6170 NOMINAL |
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