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National Stock Number:
6650-00-531-6357
Federal Supply Class:
6650
National Item Identification Number:
005316357
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:
| 5316357 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | 3.255 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 1.503 INCHES | | ABBE CONSTANT | 36.600 AND 64.500 | | AXIAL THICKNESS | 0.064 INCHES NOMINAL AND 0.579 INCHES NOMINAL | | BACK FOCAL LENGTH | 8.944 INCHES | | COMPOUND LENS EDGE THICKNESS | 0.542 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.633 INCHES MINIMUM AND 0.653 INCHES MAXIMUM | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 1.424 INCHES MINIMUM AND 1.427 INCHES MAXIMUM | | EQUIVALENT FOCAL LENGTH | 8.090 INCHES | | FSC APPLICATION DATA | TELESCOPE BC M65 | | INDIVIDUAL LENS STYLE | DOUBLE CONCAVE AND DOUBLE CONVEX | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,CLASS 1,GRADE C,TYPE 617-366 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,CLASS 1,GRADE C,TYPE 517-645 MIL SPEC 2ND MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.6170 MINIMUM AND 1.5170 MINIMUM | | SPECIAL FEATURES | REFLECTION REDUCING TREATMENT ON FRONT SURFACE,JAN-M-621 |
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