NSN 6540-01-310-4961
Part Details | SEMIFINISHED BIFOCAL OPHTHALMIC LENS BLANK
6540-01-310-4961 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: A89E198, 8961924 CS, 89-6-19-24 CS, P8.25 BC P1.00 ADD, 6540-01-310-4961, 01-310-4961, 6540013104961, 013104961
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 65 | NOV 04, 1989 | 01-310-4961 | 30300 ( LENS BLANK, OPHTHALMIC, BIFOCAL, SEMIFINISHED ) |
REFERENCE DRAWINGS & PICTURES
SPHERE
ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT
Cross Reference | NSN 6540-01-310-4961
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| A89E198 | 66732 | DEPARTMENT OF THE ARMYU S ARMY MEDICAL MATERIAL AGENCY |
| 89-6-19-24 CS | 66732 | DEPARTMENT OF THE ARMYU S ARMY MEDICAL MATERIAL AGENCY |
| P8.25 BC P1.00 ADD | 0FWW0 | ICARE INDUSTRIES INC |
Technical Data | NSN 6540-01-310-4961
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT |
| DIAMETER | 66.0 MILLIMETERS NOMINAL |
| THICKNESS | 10.0 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 | 8.25 PLUS NOMINAL |
| ADDITIONAL POWER RATING IN DIOPTERS | 1.000 BIFOCAL |
| SPECIAL FEATURES | FLAT TOP; CR-39; SEGMENT POSITIONED 5 MM BELOW AND 5 MM IN FROM GEOMETRIC ENTER FOR RIGHT AND LEFT LENSES (PORM 2 MM) |