NSN 6540-01-375-8459
Part Details | SEMIFINISHED BIFOCAL OPHTHALMIC LENS BLANK
6540-01-375-8459 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: P4.50 BC, P1.50 ADD 35 FT, 6540-01-375-8459, 01-375-8459, 6540013758459, 013758459
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 65 | MAY 23, 1993 | 01-375-8459 | 30300 ( LENS BLANK, OPHTHALMIC, BIFOCAL, SEMIFINISHED ) |
REFERENCE DRAWINGS & PICTURES
SPHERE
ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT
Cross Reference | NSN 6540-01-375-8459
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| P4.50 BC, P1.50 ADD 35 FT | 0G0R3 | SILOR OPTICAL OF FLORIDA INC |
Technical Data | NSN 6540-01-375-8459
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT |
| DIAMETER | 71.0 MILLIMETERS NOMINAL |
| THICKNESS | 11.0 MILLIMETERS NOMINAL |
| READING SEGMENT DIAMETER | 35.0 MILLIMETERS NOMINAL |
| READING SEGMENT HEIGHT | 22.0 MILLIMETERS NOMINAL |
| MATERIAL AND LOCATION | PLASTIC OVERALL |
| LIGHT TRANSMISSION | UNTINTED |
| CROSS-SECTIONAL SHAPE STYLE | SPHERE |
| BASE CURVE DIOPTER | 4.50 PLUS NOMINAL |
| ADDITIONAL POWER RATING IN DIOPTERS | 1.500 BIFOCAL |
| SPECIAL FEATURES | CR-39; CONVEX |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTHALMIC BIFOCAL SEMIFINISHED PLAS +4.5 1.5DIOPTERS |
