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National Stock Number:
6650-00-518-5191
Federal Supply Class:
6650
National Item Identification Number:
005185191
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:
| 5185191 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | 0.638 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 0.480 INCHES | | ABBE CONSTANT | 59.900 AND 36.600 | | AXIAL THICKNESS | 0.354 INCHES NOMINAL AND 0.055 INCHES NOMINAL | | BACK FOCAL LENGTH | 0.901 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.291 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.409 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 0.689 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 1.160 INCHES | | FSC APPLICATION DATA | BINOCULAR,FIRE CONTROL | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE D MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5410 NOMINAL AND 1.6170 NOMINAL |
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