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National Stock Number:
6540-01-357-4119
Federal Supply Class:
6540
National Item Identification Number:
013574119
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:
| P10.25 BC, P0.75 ADD | 2M126 | X-CEL OPTICAL COMPANY |
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Techincal Specification:
| ADDITIONAL POWER RATING IN DIOPTERS | 0.750 BIFOCAL | | BASE CURVE DIOPTER | 10.25 PLUS NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | SPHERE | | DIAMETER | 71.0 MILLIMETERS NOMINAL | | LIGHT TRANSMISSION | UNTINTED | | MATERIAL | BARIUM FLINT GLASS BIFOCAL | | MATERIAL | GLASS SODA-LIME SINGLE VISION | | PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTHALMIC BIFOCAL SEMIFINISHED +10.25 0.75BIFOCAL | | READING SEGMENT HEIGHT | 19.0 MILLIMETERS NOMINAL | | READING SEGMENT DIAMETER | 28.0 MILLIMETERS NOMINAL | | SPECIAL FEATURES | CROWN,WHITE; STRAIGHT TOP SEGMENT | | STYLE DESIGNATOR | ROUND WITH STRAIGHT TOP BIFOCAL SEGMENT | | THICKNESS | 8.2 MILLIMETERS NOMINAL |
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