1 March 2001 Measuring the illumination angle of a flatbed scanner
Tuck Wah Ng, Armita Tajuddin
Author Affiliations +
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.
©(2001) Society of Photo-Optical Instrumentation Engineers (SPIE)
Tuck Wah Ng and Armita Tajuddin "Measuring the illumination angle of a flatbed scanner," Optical Engineering 40(3), (1 March 2001). https://doi.org/10.1117/1.1347030
Published: 1 March 2001
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Cited by 1 scholarly publication.
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KEYWORDS
Scanners

Photodiodes

Illumination engineering

Linear filtering

Oscilloscopes

Commercial off the shelf technology

Light sources

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