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National Stock Number:
6650-00-491-0277
Federal Supply Class:
6650
National Item Identification Number:
004910277
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:
| 11151161 | 07076 | LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN SIMULATION TRAINING & SUPPORT | | 11151161 | 16331 | LOCKHEED MARTIN CORPORATION | | 11151161 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 11151161 | 52940 | FJW INDUSTRIES INC |
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Techincal Specification:
| ELEMENT RIGHT SURFACE RADIUS | -6.925 INCHES AND 19.078 INCHES | | ELEMENT LEFT SURFACE RADIUS | 9.092 INCHES | | ABBE CONSTANT | 59.600 AND 29.500 | | BACK FOCAL LENGTH | 14.730 INCHES | | AXIAL THICKNESS | 0.384 INCHES NOMINAL AND 0.192 INCHES NOMINAL | | COMPOUND LENS EDGE THICKNESS | 0.410 INCHES NOMINAL | | COMPOUND LENS OVERALL AXIAL THICKNESS | 0.576 INCHES NOMINAL | | COMPOUND LENS STYLE | DOUBLET | | EQUIVALENT FOCAL LENGTH | 15.000 INCHES | | FRONT FOCAL LENGTH | 14.900 INCHES | | INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,GRADE A,TYPE 523-596 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,GRADE A,TYPE 717-295 MIL SPEC 2ND MATERIAL RESPONSE | | MATERIAL | GLASS OPTICAL | | REFRACTION INDEX | 1.5230 NOMINAL AND 1.7170 NOMINAL |
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