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National Stock Number:
6650-00-851-7613
Federal Supply Class:
6650
National Item Identification Number:
008517613
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:
| 7660500 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT RIGHT SURFACE RADIUS | 2.487 INCHES | | ELEMENT LEFT SURFACE RADIUS | 4.235 INCHES | | ABBE CONSTANT | 57.400 AND 68.900 | | BACK FOCAL LENGTH | 6.008 INCHES | | AXIAL THICKNESS | 0.179 INCHES NOMINAL AND 0.099 INCHES NOMINAL | | COMPOUND LENS EDGE THICKNESS | 0.228 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.278 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 0.760 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 6.135 INCHES | | FRONT FOCAL LENGTH | 5.730 INCHES | | FSC APPLICATION DATA | TELESCOPE,PANORAMIC,T177,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5725 NOMINAL AND 1.6890 NOMINAL |
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