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National Stock Number:
6650-00-300-6596
Federal Supply Class:
6650
National Item Identification Number:
003006596
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:
| 7633297 | 11934 | SEILER INSTRUMENT AND MANUFACTURING COMPANY, INCORPORATED | | 7633297 | 19200 | US ARMY ARDEC RDECOM | | 7633297 | 34870 | FJW OPTICAL SYSTEMS, INC |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -2.148 INCHES AND 1.478 INCHES | | ELEMENT RIGHT SURFACE RADIUS | -2.148 INCHES | | ABBE CONSTANT | 57.400 AND 30.900 | | AXIAL THICKNESS | 0.425 INCHES NOMINAL AND 0.140 INCHES NOMINAL | | BACK FOCAL LENGTH | 2.560 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.404 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.565 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.340 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 2.952 INCHES | | FSC APPLICATION DATA | TELESCOPE,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INDIVIDUAL LENS STYLE | PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6890 NOMINAL |
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