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National Stock Number:
6540-00-890-1052
Federal Supply Class:
6540
National Item Identification Number:
008901052
Description:
LENS BLANK,OPHTHALMIC,COMPOUND,S
Detail:
A TRANSPARENT MOLDED OPTICAL ELEMENT HAVING A SPHERICAL DIOPTER BASE CURVE AND A CYLINDRICAL DIOPTER CROSS CURVE, AN APPROXIMATE SIZE AND SHAPE, AND HAS BEEN GROUND AND POLISHED TO A FINISHED CURVATURE ON ONE SURFACE ONLY.
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Manufacturer Information:
| MILL16991 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| BASE CURVE DIOPTER | 6.50 PLUS NOMINAL | | CROSS-SECTIONAL SHAPE STYLE | SPHEROCYLINDER COMPOUND | | CYLINDER CURVE OUTSIDE DIOPTER | 4.75 PLUS MAXIMUM | | DIAMETER | 57.0 MILLIMETERS MINIMUM AND 62.0 MILLIMETERS MAXIMUM | | HEIGHT | 54.0 MILLIMETERS MINIMUM AND 60.0 MILLIMETERS MAXIMUM | | LIGHT TRANSMISSION | UNTINTED | | MATERIAL | GLASS SODA-LIME SINGLE VISION | | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND C CLASS | | PART NAME ASSIGNED BY CONTROLLING AGENCY | LENS BLANK OPHTH COMPOUND SEMIFINISHED GLASS +6.5 +4.75 DIOPTERS | | WIDTH | 54.0 MILLIMETERS MINIMUM AND 60.0 MILLIMETERS MAXIMUM | | STYLE DESIGNATOR | ROUND-RECTANGULAR WITH ROUNDED CORNERS | | THICKNESS | 7.0 MILLIMETERS NOMINAL |
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