|
|
|
National Stock Number:
6540-01-375-0109
Federal Supply Class:
6540
National Item Identification Number:
013750109
Description:
LENS BLANK,OPHTHALMIC,BIFOCAL,SE
Detail:
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.
|
Manufacturer Information:
| P6.50 BC, P1.75 ADD | 0G0R3 | SILOR OPTICAL OF FLORIDA INC |
|
Techincal Specification:
| READING SEGMENT HEIGHT | 22.0 MILLIMETERS NOMINAL | | READING SEGMENT DIAMETER | 35.0 MILLIMETERS NOMINAL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTHALMIC BIFOCAL SEMIFINISHED PLAS +6.5 CR-39 71MM | | STYLE DESIGNATOR | ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT | | LIGHT TRANSMISSION | UNTINTED | | DIAMETER | 71.0 MILLIMETERS NOMINAL | | ADDITIONAL POWER RATING IN DIOPTERS | 1.750 BIFOCAL | | THICKNESS | 9.0 MILLIMETERS NOMINAL | | MATERIAL AND LOCATION | PLASTIC BIFOCAL | | SPECIAL FEATURES | CR-39; CONVEX | | BASE CURVE DIOPTER | 6.50 PLUS NOMINAL |
|
|