Concave test glass
R23 spherical concave test glass
Part details
Material :
Manufacturing process :
precision optics polishing
Dimensions:
D21.85mm, height 20mm
Shape :
Plano concave bloc. R23 +/-0.02mm concave radius of curvature.
0.02 concentricity & perpendicularity
Flatness : Lambda/2
Optical treatment :
None
Usage :
Test glass for interferometric control of lens radius of curvature.
