NSN 6540-00-890-1038

Part Details | SEMIFINISHED COMPOUND OPHTHALMIC LENS BLANK

6540-00-890-1038 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.

Alternate Parts: MILL16991, 6540-00-890-1038, 00-890-1038, 6540008901038, 008901038

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
65JAN 01, 196200-890-103830302 ( LENS BLANK, OPHTHALMIC, COMPOUND, SEMIFINISHED )
REFERENCE DRAWINGS & PICTURES

SPHEROCYLINDER COMPOUND

ROUND-RECTANGULAR WITH ROUNDED CORNERS

Cross Reference | NSN 6540-00-890-1038
Part Number Cage Code Manufacturer
MILL1699181349MILITARY SPECIFICATIONSPROMULGATED BY MILITARY
Technical Data | NSN 6540-00-890-1038
Characteristic Specifications
STYLE DESIGNATOR ROUND-RECTANGULAR WITH ROUNDED CORNERS
DIAMETER57.0 MILLIMETERS MINIMUM AND 62.0 MILLIMETERS MAXIMUM
WIDTH54.0 MILLIMETERS MINIMUM AND 60.0 MILLIMETERS MAXIMUM
HEIGHT54.0 MILLIMETERS MINIMUM AND 60.0 MILLIMETERS MAXIMUM
THICKNESS5.5 MILLIMETERS NOMINAL
MATERIAL AND LOCATION GLASS, SODA-LIME SINGLE VISION
LIGHT TRANSMISSION UNTINTED
CROSS-SECTIONAL SHAPE STYLE SPHEROCYLINDER COMPOUND
BASE CURVE DIOPTER6.50 PLUS NOMINAL
CYLINDER CURVE OUTSIDE DIOPTER1.25 PLUS MAXIMUM
NONDEFINITIVE SPEC/STD DATA1 TYPE AND C CLASS
PART NAME ASSIGNED BY CONTROLLING AGENCYLENS BLANK OPHTH COMPOUND SEMIFINISHED GLASS +6.5 +1.25 DIOPTERS