Contact image sensor

Scanner unit with CIS. A: assembled, B: disassembled; 1: housing, 2: light conductor, 3: lenses, 4: chip with two RGB-LEDs, 5: CIS

Contact Image Sensors (CIS) are image sensors used in flatbed scanners almost in direct contact with the object to be scanned. CCDs, often used for this application, use mirrors to bounce light to a stationary sensor. CISs are much smaller than CCDs, use typically a tenth as much power, and are particularly suitable for low power and portable applications, often powered over USB.

单词	Contact image sensor
释义	Contact image sensor 英语百科 Contact image sensor Contact Image Sensors (CIS) are image sensors used in flatbed scanners almost in direct contact with the object to be scanned. CCDs, often used for this application, use mirrors to bounce light to a stationary sensor. CISs are much smaller than CCDs, use typically a tenth as much power, and are particularly suitable for low power and portable applications, often powered over USB.
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