Image Science Ltd
Image Science designs and manufactures optical test equipment for assessing the quality of visible and infra-red lenses.
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Modulation Transfer Function (MTF)
Phase Transfer Function (PTF)
Effective Focal Length (EFL)
Flange Focal Length (FFL)
Field Curvature
Distortion
Vignetting
Astigmatism
Chromatic Aberration
Field of View (FOV)
Absolute Transmission
Encircled Energy and Ensquared Energy