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Lens Measurement Instrument

Photonics Spectra
Mar 2010
Optikos CorporationRequest Info
 
Optikos Corp. has introduced the LensCheck lens measurement instrument for production and prototype lens qualification. It features high-resolution USB motorized stages, 12-bit real-time video output and integrated glass scale encoders, providing accurate and efficient measurements in a compact, portable system. Coupled with proprietary and patented VideoMTF image analysis software, the system enables real-time modulation transfer function (MTF) testing, measurement and analysis. Features include a 50-mm clear-aperture refractive collimator, an eight-position manual target and filter wheels, and a self-centering lens holder. Besides on/off-axis MTF, it also measures effective focal length and f number, back focal length, astigmatism, field curvature, distortion, transmission and relative illumination.


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GLOSSARY
astigmatism
A lens aberration that results in the tangential and sagittal image planes being separated axially.  
distortion
A general term referring to the situation in which an image is not a true-to-scale reproduction of an object. The term also is used to connote the temporal alteration of the signal's waveform shape. There are many types of distortion. See also anamorphic distortion; curvilinear distortion; keystone distortion; panoramic distortion; perspective distortion; radial distortion; stereoscopic distortion; tangential distortion; wide-angle distortion.
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