6540-01-375-4089 LENS BLANK,OPHTHALMIC,BIFOCAL,SE Index 6540-01-375-4091 LENS BLANK,OPHTHALMIC,SPHERE,SEM

National Stock Number:
6540-01-375-4090

Federal Supply Class:
6540

National Item Identification Number:
013754090

Description:
LENS BLANK,OPHTHALMIC,SPHERE,SEM

Detail:
A TRANSPARENT MOLDED OPTICAL ELEMENT HAVING EQUAL SPHERICAL DIOPTER CURVATURES, AN APPROXIMATE SIZE AND SHAPE, AND HAS BEEN GROUND AND POLISHED TO A FINISHED CURVATURE ON ONE SURFACE ONLY.


Manufacturer Information:
0.50BC,SPHERE,CR-39,71MM3N062DISPENSERS OPTICAL SERVICE CORP
P0.50 BC0G0R3SILOR OPTICAL OF FLORIDA INC


Techincal Specification:
BASE CURVE DIOPTER0.50 PLUS NOMINAL
CROSS CURVE DIOPTER0.50 PLUS NOMINAL
CROSS-SECTIONAL SHAPE STYLESPHERE
DIAMETER71.0 MILLIMETERS NOMINAL
HEIGHT71.0 MILLIMETERS NOMINAL
LIGHT TRANSMISSIONUNTINTED
PART NAME ASSIGNED BY CONTROLLING AGENCYLENS BLANK OPHTHALMIC SPHERE SEMIFINISHED PLASTIC +0.5 +0.5 +0.5
MATERIALPLASTIC SINGLE VISION
SPECIAL FEATURESCR-39; DIOPTER BASE CURVE; UNCUT
SPHERE CURVE OUTSIDE DIOPTER0.50 PLUS NOMINAL
STYLE DESIGNATORROUND-RECTANGULAR WITH ROUNDED CORNERS
WIDTH71.0 MILLIMETERS NOMINAL
THICKNESS12.0 MILLIMETERS NOMINAL


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