OptiSpheric® AF 500 INV
Lens Diameter (1) 5 mm … 75 mm
EFL, relative MTF: Range +5 mm … +500 mm (3)
EFL, relative MTF: Measurement accuracy (2) 5 mm … 25 mm: 0.1 % … 0.3 %
25 mm ... 500 mm: 0.03 % … 0.1 %
500 mm … 1000 mm: 0.05 % … 0.3 %
EFL, relative MTF: Measurement time First measurement: 5 s … 8 s
Consecutive measurements : 3 s … 5 s
BFL, FFL, Radius: Range +5 mm … +490 mm
BFL, FFL, Radius: Repeatability (2) 0.02 to 0.2 %
BFL, FFL, Radius: Accuracy (2) 0.03 to 0.3 %
MTF up to 150 lp/mm: Range 5 mm … 75 mm EFL
MTF up to 150 lp/mm: Test Mode axial MTF measurement
automatic auto focus
MTF up to 150 lp/mm: Spatial frequency 0 lp/mm … 500 lp/mm
MTF up to 150 lp/mm: Repeatability (2) 1 %
MTF up to 150 lp/mm: Accuracy (2) 2 %
Wavelength 546 nm (4)

(1) Sample holder for other lens diameters upon request
(2) Depending on NA of sample; higher NA reduces accuracy; sample NA should be smaller than NA of the measurement head
(3) Negative measurement range upon request
(4) Other wavelengths (e.g. 480 nm, 658 nm) upon request