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National Stock Number:
6540-01-382-4565
Federal Supply Class:
6540
National Item Identification Number:
013824565
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:
| PLANO BC, 2.50 ADD, CR-39 | 0G0R3 | SILOR OPTICAL OF FLORIDA INC |
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Techincal Specification:
| ADDITIONAL POWER RATING IN DIOPTERS | 2.500 BIFOCAL | | BASE CURVE DIOPTER | 0.00 PLUS NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | SPHEROCYLINDER COMPOUND | | DIAMETER | 71.0 MILLIMETERS MINIMUM | | LIGHT TRANSMISSION | UNTINTED | | PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTH BIFOCAL SEMIFINISHED PLAS +0.0 2.5DIOPTER PLANO | | MATERIAL | PLASTIC BIFOCAL | | READING SEGMENT DIAMETER | 28.0 MILLIMETERS NOMINAL | | READING SEGMENT HEIGHT | 19.0 MILLIMETERS NOMINAL | | SPECIAL FEATURES | CR-39; PLANO | | STYLE DESIGNATOR | ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT | | THICKNESS | 6.0 MILLIMETERS NOMINAL |
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