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National Stock Number:
6650-00-864-2942
Federal Supply Class:
6650
National Item Identification Number:
008642942
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:
| 7660504 | 03829 | GENERAL SCIENTIFIC CORP | | 7660504 | 19200 | US ARMY ARDEC RDECOM | | 7660504 | 94809 | PLUMMER PRECISION OPTICS CO |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | -1.589 INCHES AND 1.244 INCHES | | ABBE CONSTANT | 57.400 AND 30.900 | | AXIAL THICKNESS | 0.364 INCHES NOMINAL AND 0.121 INCHES NOMINAL | | BACK FOCAL LENGTH | 2.192 INCHES | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.465 INCHES MINIMUM AND 0.505 INCHES MAXIMUM | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 0.997 INCHES MINIMUM AND 1.000 INCHES MAXIMUM | | EQUIVALENT FOCAL LENGTH | 2.534 INCHES | | FSC APPLICATION DATA | TELESCOPE,PANORAMIC | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,GRADE C,TYPE 689-309 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,GRADE C,TYPE 573-574 MIL SPEC 2ND MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5730 NOMINAL AND 1.6890 NOMINAL | | SPECIAL FEATURES | PLANO EDGE CHAMFERED 0.020 INCH AT 45 DEGREES |
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