NSN 6540-01-310-4965
Part Details | SEMIFINISHED BIFOCAL OPHTHALMIC LENS BLANK
6540-01-310-4965 A transparent optical element consisting of a major blank and a bifocal segment. The blank and segment have been pressed in a glass mold to an approximate size and shape, and are ground and polished to a finished diopter curvature on one surface only.
Alternate Parts: A89E197, 8961925, 89-6-19-25, P6.25 BC P3.00 ADD, 6540-01-310-4965, 01-310-4965, 6540013104965, 013104965
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 65 | NOV 04, 1989 | 01-310-4965 | 30300 ( LENS BLANK, OPHTHALMIC, BIFOCAL, SEMIFINISHED ) |
REFERENCE DRAWINGS & PICTURES
SPHERE
ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT
Cross Reference | NSN 6540-01-310-4965
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| A89E197 | 66732 | DEPARTMENT OF THE ARMYU S ARMY MEDICAL MATERIAL AGENCY |
| 89-6-19-25 | 66732 | DEPARTMENT OF THE ARMYU S ARMY MEDICAL MATERIAL AGENCY |
| P6.25 BC P3.00 ADD | 0FWW0 | ICARE INDUSTRIES INC |
Technical Data | NSN 6540-01-310-4965
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT |
| DIAMETER | 66.0 MILLIMETERS NOMINAL |
| THICKNESS | 7.5 MILLIMETERS NOMINAL |
| READING SEGMENT DIAMETER | 25.0 MILLIMETERS NOMINAL |
| READING SEGMENT HEIGHT | 17.500 INCHES NOMINAL |
| MATERIAL AND LOCATION | PLASTIC OVERALL |
| LIGHT TRANSMISSION | UNTINTED |
| CROSS-SECTIONAL SHAPE STYLE | SPHERE |
| BASE CURVE DIOPTER | 6.25 PLUS NOMINAL |
| ADDITIONAL POWER RATING IN DIOPTERS | 3.000 BIFOCAL |
| SPECIAL FEATURES | FLAT TOP; CR-39; SEGMENT POSITIONED 5 MM BELOW AND 5 MM IN FROM GEOMETRIC CENTER FOR RIGHT AND LEFT LENSES (PORM 2 MM) |