| GENERAL CHARACTERISTICS ITEM DESCRIPTION | OPTICAL GLASS JAN-G-174; LENS SET WITH FOUR LENSES; LENSE 1 AND 4 DOUBLE CONVEX,13.0 MM DIA,AXIAL THICKNESS 3.9 MM,REFRACTION INDEX 1.5170 NOMINAL,ABBE CONSTANT 64.500; LENSE 2 DOUBLE CONCAVE,13.0 MM DIA,AXIAL THICKNESS 1.5 MM,REFRACTION INDEX 1.6170 NOMINAL,ABBE CONSTANT 55.000; LENSE 3 MENISCUS,13.0 MM DIA,AXIAL THICKNESS 5.0 MM,REFRACTION INDEX 1.6170 NOMINAL,ABBE CONSTANT 36.600; OVERALL AXIAL THICKNESS 14.3 MM,ELEMENT LEFT SURFACE RADIUS 24.8,18.4 AND 13.6 MM,ELEMENT RIGHT SURFACE RADIUS 13.6,18.4 AND 24.8 MM; LENSE 1 BEVELED 0.7 MM 45 DEG,LENSE 4 BEVELED 0.5 MM 45 DEG |