Targets Calculator

4-bar target

Collimator's Focal Length inches mm

Calculate the bar width (inches and mm) from a known collimator focal length and a specific spatial frequency value (cy/mrad)

Spatial Frequency cy/mrad

Bar Width (t)

0.002(inches) 0.05(inches)

Calculate the spatial frequency value (cy/mrad) from a known collimator focal length and a specific bar width (inches)

Bar Width (t) inches mm

Spatial Frequency

30.05(cy/mrad)

Standard feature tolerance is 5 % for target features equal or larger than 0.0012 " 30 µm), and 20 % for target features smaller than 0.0012 " 30 µm ). Tighter tolerances are available upon request.
Please refer to collimator's datasheets for more technical information or Contact CI Systems

Collimator's Focal Length inches mm

Calculate the pinhole diameter from a known collimator focal length and a specific angular size of pinhole (mrad)

Angular size of pinhole mrad

Pinhole diameter (d)

0.002(inches) 0.05(inches)

Calculate the angular size of a pinhole target from a known collimator focal length and a specific pinhole diameter (inches)

Pinhole diameter (d) inches mm

Angular size of pinhole

30.05 (mrad)

Standard feature tolerance is 5 % for target features equal or larger than 0.0012 " 30 µm), and 20 % for target features smaller than 0.0012 " 30 µm ). Tighter tolerances are available upon request.
Please refer to collimator's datasheets for more technical information or Contact CI Systems