OPTICAL LENS
P/N 5316908
NSN 6650 00 531 6908
MFG US ARMY
 
NEW GOV SURPLUS
SUPPLIER CAGE CODE 03EF7
 
ITEM NAME:   LENS,OPTICAL INSTRU
DEFINITION:  An unmounted, transparent, color free lens which may be treated with a
             low reflection coating to increase light transmission. Includes single
             and compound elements. For items having two plane parallel surfaces,
             see WINDOW, OPTICAL INSTRUMENT. Excludes RETICLE, OPTICAL INSTRUMENT.
            
 
CHARACTERISTIC                          VALUE
DIAMETER                                2.255 INCHES NOMINAL                              
AXIAL THICKNESS                         0.393 INCHES NOMINAL AND 0.277 INCHES NOMINAL    
COMPOUND LENS OVERALL AXIAL             0.670 INCHES NOMINAL                             
THICKNESS                                                                                 
EQUIVALENT FOCAL LENGTH                 14.130 INCHES                                    
BACK FOCAL LENGTH                       13.744 INCHES                                    
REFRACTION INDEX                        1.5170 NOMINAL AND 1.6170 NOMINAL                
ABBE CONSTANT                           64.500 AND 36.600                                
COMPOUND LENS STYLE                     DOUBLET                                          
INDIVIDUAL LENS STYLE                   DOUBLE CONVEX AND MENISCUS                       
ELEMENT LEFT SURFACE RADIUS             -6.082 MILLIMETERS AND 7.390 MILLIMETERS         
ELEMENT RIGHT SURFACE                   -35.390 MILLIMETERS AND -6.082 MILLIMETERS       
RADIUS                                                                                   
MATERIAL                                GLASS, OPTICAL, MIL-G-174, GRADE C, TYPE 517-645 
DESIGN CONTROL REFERENCE                5316908                                           
THE MANUFACTURERS DATA                  19200