Instrument Lens Diameter Free Aperture EFL Measuring Range
BFL and Radius
MTF
OptiSpheric
Manual Focusing,
automated measurement
3 mm ... 35 mm
optional: 5 mm ... 75 mm
28 mm +5 mm … +250 mm
-5 mm … -250 mm
±5 mm … ±250 mm absolute MTF-Test:
5 mm … 50 mm EFL
OptiSpheric
Auto Focus 500
automated measurement
3 mm ... 35 mm
optional: 5 mm ... 75 mm
28 mm +5 mm … +450 mm
-5 mm … -450 mm
±5 mm … ±490 mm absolute MTF-Test:
5 mm … 50 mm EFL
OptiSpheric
Auto Focus 1000
automated measurement
5 mm ... 75 mm
optional: 3 mm ... 35 mm
48 mm +5 mm … +1000 mm
-5 mm … -1000 mm
±5 mm … ±490 mm absolute MTF-Test:
5 mm … 50 mm EFL
OptiSpheric
Auto Focus 1500
automated measurement
5 mm ... 75 mm
optional: 3 mm ... 35 mm
48 mm +5 mm … +1500 mm
-5 mm … -1200 mm
±5 mm … ±750 mm absolute MTF-Test:
5 mm … 50 mm EFL
OptiSpheric
Auto Focus 2000
automated measurement
5 mm ... 75 mm
optional: 3 mm ... 35 mm
48 mm +5 mm … +2000 mm
-5 mm … -1500 mm
±5 mm … ±1000 mm absolute MTF-Test:
5 mm … 50 mm EFL
System Performance EFL
Resolution: 0.03 % ... 0.2%
Measurement Accuracy* 5 mm ... 25 mm: 0.1 % ... 0.3 %
25 mm ... 500 mm: 0.03 % ... 0.1 %
500 mm ... 1000 mm: 0.05 % ... 0.3 %
Measurement Time Manual focusing: 3 s ... 20 s
Measurement time: mouse click
AutoFocus: First measurement: 5 s ... 8 s
Next measurements: 3 s ... 5 s
System Performance MTF
Test mode OnAxisMTF
manual on automatic Autofocus depending on the model
Wavelength range 400 nm ... 1000 nm
Spatial frequency 0 lp/mm... 500 lp/mm
higher frequencies available on request
MTF-measurement / Slit evaluation
• Repeatability*
• Accuracy*

1 %
2 %
System Performance BFL, FFL and Radius of curvature
Repeatability: 0.02 % ... 0.2 %
Accuracy*: 0.03 % ... 0.3 %
System Performance Centration Errors (as an option)
Repeatability: ±0.1 µm or ±1 arcsec
Accuracy*: ±0.2 µm or ±2 arcsec
Measurement time: 3 s ... 15 s
Measurement range: ±1 mm… ±2000 mm
System Performance Angle Measurement (as an option)
Resolution: 0.01 arcsec
Repeatability*: 0.2 arcsec
Accuracy*: 1 arcsec

* for OptiSpheric® without autofocus: the achieved accuracy and repeatability depends as well on the operator