Opto-Electronics


Integrated CMOS linear image sensors

18 April 2007 Opto-Electronics

Hamamatsu Photonics offers a range of surface mount CMOS linear image sensors for high volume, automated assembly applications. The new S10226 has 1024 pixels on a 7,8 μm pitch with 125 μm pixel height. Each pixel has an aspect ratio of 16:1, which Hamamatsu says facilitates 16 times more light collection area compared to conventional 'linear' CCDs used in consumer type scanners and barcode readers. This provides the user with greater sensitivity with no increase in cost.

The new CMOS arrays incorporate 1024 individual photodiode elements with buffer amplifier, digital shift register (multiplexor) and signal processing circuit (correlated double-sampling noise reduction circuit) all on the same monolithic silicon chip. The new CMOS devices also provide all the necessary clock generation functions on chip, enabling easier system design and implementation compared to traditional CCD technology.

The new S10226 is suited for applications such as in-line product inspection, portable spectrometers, industrial process control, colour monitoring, angle measurement, medical diagnostics, distance and displacement measurement, optical encoders, blood analysers, optical scanners, point of care diagnostics, automotive sensing, water pollution analysers and many more.



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