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CYLINDRICAL LENS

Photonics Spectra
Dec 2008
Avantes BVRequest Info
 
Avantes.jpgAvantes BV has designed a cylindrical lens for its AvaSpec-128 spectrometer detector that combines increased sensitivity with a high-speed detector array (full 128-pixel spectrum in 60 μs). Suitable for in-line process control applications, the lens focuses light onto the detector array, which has a pixel height of 63.5 μm. Applications include color measurement, fruit sorting and water detection, where absorption signals can be found in the 900- to 1100-nm range.


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GLOSSARY
cylindrical lens
A lens having at least one surface that is formed like a portion of a cylinder. Cylindrical lenses are used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching a point of light into a line.
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