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National Stock Number:
6650-00-073-8841
Federal Supply Class:
6650
National Item Identification Number:
000738841
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:
| 8626210 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | 3.127 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 2.410 INCHES | | ABBE CONSTANT | 64.500 AND 33.800 | | AXIAL THICKNESS | 0.349 INCHES MINIMUM AND 0.369 INCHES MAXIMUM AND 0.092 INCHES MINIMUM AND 0.112 INCHES MAXIMUM | | BACK FOCAL LENGTH | 5.312 INCHES | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.441 INCHES MINIMUM AND 0.481 INCHES MAXIMUM | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.237 INCHES MINIMUM AND 1.243 INCHES MAXIMUM | | EQUIVALENT FOCAL LENGTH | 5.569 INCHES | | FSC APPLICATION DATA | TELESCOPE PANORAMIC M113 | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,CLASS 1,GRADE C,TYPE 517-645 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,CLASS 1,GRADE C,TYPE 649-338 MIL SPEC 2ND MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5170 NOMINAL AND 1.6490 NOMINAL |
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