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National Stock Number:
6650-00-393-0413
Federal Supply Class:
6650
National Item Identification Number:
003930413
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:
| 11733418 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | 2.359 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 1.557 INCHES | | ABBE CONSTANT | 29.300 | | AXIAL THICKNESS | 0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM | | BACK FOCAL LENGTH | -6.785 INCHES | | DIAMETER | 1.199 INCHES MINIMUM AND 1.202 INCHES MAXIMUM | | EQUIVALENT FOCAL LENGTH | -6.646 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.7200 NOMINAL | | SINGLE LENS STYLE | MENISCUS DIVERGING |
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