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National Stock Number:
6650-00-891-9850
Federal Supply Class:
6650
National Item Identification Number:
008919850
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:
| 8587318 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -0.314 INCHES AND 1.667 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 1.667 INCHES AND -0.574 INCHES | | ABBE CONSTANT | 36.600 AND 54.900 | | AXIAL THICKNESS | 0.106 INCHES NOMINAL AND 0.279 INCHES NOMINAL | | BACK FOCAL LENGTH | 3.791 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.250 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.385 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 0.834 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | -2.583 INCHES | | FSC APPLICATION DATA | TELESCOPE,PANORAMIC,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INDIVIDUAL LENS STYLE | DOUBLE CONCAVE AND DOUBLE CONVEX | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6170 NOMINAL |
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