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National Stock Number:
6650-00-766-0733
Federal Supply Class:
6650
National Item Identification Number:
007660733
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:
| 7660733 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT RIGHT SURFACE RADIUS | 1.705 INCHES | | ELEMENT LEFT SURFACE RADIUS | 3.661 INCHES | | ABBE CONSTANT | 42.500 AND 60.500 | | AXIAL THICKNESS | 0.158 INCHES NOMINAL AND 0.472 INCHES NOMINAL | | BACK FOCAL LENGTH | 12.454 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.562 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.630 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.900 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 13.161 INCHES | | FSC APPLICATION DATA | PERISCOPE,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INDIVIDUAL LENS STYLE | MENISCUS DIVERGING AND MENISCUS CONVERGING | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5725 NOMINAL AND 1.5125 NOMINAL |
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