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National Stock Number:
1240-00-763-2697
Federal Supply Class:
1240
National Item Identification Number:
007632697
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:
| 7632697 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | 7.237 INCHES AND 3.188 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 3.188 INCHES AND -31.336 INCHES | | ABBE CONSTANT | 36.600 AND 58.600 | | AXIAL THICKNESS | 0.160 INCHES NOMINAL AND 0.230 INCHES NOMINAL | | BACK FOCAL LENGTH | 14.180 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.344 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.390 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.700 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 13.807 INCHES | | FRONT FOCAL LENGTH | 13.790 INCHES | | FSC APPLICATION DATA | RANGE FINDER,INTEGRATED WITH FIRE CONTROL EQUIP | | INDIVIDUAL LENS STYLE | MENISCUS DIVERGING AND DOUBLE CONVEX | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6170 NOMINAL AND 1.5230 NOMINAL |
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