1 March 2001 Measuring the illumination angle of a flatbed scanner
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Optical Engineering, 40(3), (2001). doi:10.1117/1.1347030
Abstract
Flatbed scanners are increasingly used for scientific applications in which accurate determination of the scanner's illumination angle is often needed. A measurement method based on a dual-photodiode arrangement is proposed and demonstrated. The measurements obtained from experimental verification are found to be repeatable. The technique is also fast and easy to implement.
Tuck Wah Ng, Armita Tajuddin, "Measuring the illumination angle of a flatbed scanner," Optical Engineering 40(3), (1 March 2001). http://dx.doi.org/10.1117/1.1347030
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KEYWORDS
Scanners

Photodiodes

Illumination engineering

Linear filtering

Oscilloscopes

Commercial off the shelf technology

Light sources

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