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National Stock Number:
6540-01-375-4088
Federal Supply Class:
6540
National Item Identification Number:
013754088
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.
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Manufacturer Information:
| P8.50 BC, P2.50 ADD 35 F. T. | 0G0R3 | SILOR OPTICAL OF FLORIDA INC |
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Techincal Specification:
| ADDITIONAL POWER RATING IN DIOPTERS | 2.500 BIFOCAL | | BASE CURVE DIOPTER | 8.50 PLUS NOMINAL | | DIAMETER | 71.0 MILLIMETERS NOMINAL | | LIGHT TRANSMISSION | UNTINTED | | MATERIAL | PLASTIC BIFOCAL | | PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTHALMIC BIFOCAL SEMIFINISHED PLAS +8.5 CR-39 71MM | | READING SEGMENT DIAMETER | 35.0 MILLIMETERS NOMINAL | | READING SEGMENT HEIGHT | 22.0 MILLIMETERS NOMINAL | | SPECIAL FEATURES | CR-39; CONVEX | | STYLE DESIGNATOR | ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT | | THICKNESS | 9.0 MILLIMETERS NOMINAL |
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