NSN 6540-00-890-1052
Part Details | SEMIFINISHED COMPOUND OPHTHALMIC LENS BLANK
6540-00-890-1052 A transparent molded optical element having a spherical diopter base curve and a cylindrical diopter cross curve, an approximate size and shape, and has been ground and polished to a finished curvature on one surface only.
Alternate Parts: MILL16991, 6540-00-890-1052, 00-890-1052, 6540008901052, 008901052
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 65 | JAN 01, 1963 | 00-890-1052 | 30302 ( LENS BLANK, OPHTHALMIC, COMPOUND, SEMIFINISHED ) |
REFERENCE DRAWINGS & PICTURES
SPHEROCYLINDER COMPOUND
ROUND-RECTANGULAR WITH ROUNDED CORNERS
Cross Reference | NSN 6540-00-890-1052
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| MILL16991 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
Technical Data | NSN 6540-00-890-1052
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | ROUND-RECTANGULAR WITH ROUNDED CORNERS |
| DIAMETER | 57.0 MILLIMETERS MINIMUM AND 62.0 MILLIMETERS MAXIMUM |
| WIDTH | 54.0 MILLIMETERS MINIMUM AND 60.0 MILLIMETERS MAXIMUM |
| HEIGHT | 54.0 MILLIMETERS MINIMUM AND 60.0 MILLIMETERS MAXIMUM |
| THICKNESS | 7.0 MILLIMETERS NOMINAL |
| MATERIAL AND LOCATION | GLASS, SODA-LIME SINGLE VISION |
| LIGHT TRANSMISSION | UNTINTED |
| CROSS-SECTIONAL SHAPE STYLE | SPHEROCYLINDER COMPOUND |
| BASE CURVE DIOPTER | 6.50 PLUS NOMINAL |
| CYLINDER CURVE OUTSIDE DIOPTER | 4.75 PLUS MAXIMUM |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND C CLASS |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTH COMPOUND SEMIFINISHED GLASS +6.5 +4.75 DIOPTERS |