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National Stock Number:
6650-00-698-5868
Federal Supply Class:
6650
National Item Identification Number:
006985868
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:
| 7632369 | 14001 | GRAYCO OPTICAL CORP | | 7632369 | 19200 | US ARMY ARDEC RDECOM | | 7632369 | 27777 | L3 TECHNOLOGIES, INC. |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -1.353 INCHES AND 1.960 INCHES | | ELEMENT RIGHT SURFACE RADIUS | -1.353 INCHES AND 1.960 INCHES | | ABBE CONSTANT | 30.900 AND 57.400 | | AXIAL THICKNESS | 0.140 INCHES NOMINAL AND 0.425 INCHES NOMINAL | | BACK FOCAL LENGTH | 2.308 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.253 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.565 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.310 INCHES NOMINAL | | EQUIVALENT FOCAL LENGTH | 2.669 INCHES | | FSC APPLICATION DATA | TELESCOPE | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6890 NOMINAL AND 1.5725 NOMINAL |
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