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National Stock Number:
6650-01-078-7722
Federal Supply Class:
6650
National Item Identification Number:
010787722
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:
| 12285259 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| ELEMENT LEFT SURFACE RADIUS | 6.501 INCHES AND 8.859 INCHES | | ELEMENT RIGHT SURFACE RADIUS | 8.859 INCHES AND 0.000 INCHES | | ABBE CONSTANT | 57.500 AND 31.200 | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.600 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | DIAMETER | 2.498 INCHES NOMINAL | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,CLASS 1,GRADE B,TYPE 573-575 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,CLASS 1,GRADE B,TYPE 689-312 MIL SPEC 2ND MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5730 NOMINAL AND 1.6890 NOMINAL |
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