Scanners & camera

2D flatbed scanner

Document on glass bed

1/4

A hard-copy document is placed face down onto a clear glass panel.
A bright light source (such as a xenon lamp or bright white LED) illuminates the underside of the page.

Legend

	Glass bed Document face down
	Light & mirrors Illuminates line
	Moving head Scans along document
	Lens Focuses light
	CCD array Light → charge
	ADC & Output Charge → binary / OCR

Coming soon

Extra practice and notes will live here.