Hamamatsu Photonics has introduced a CMOS linear image sensor designed specifically for spectrometry applications; the S10121 to S10124 series. Each pixel on the sensor acts as a self-containing photodiode offering variable integration time, so the integration time is shortened if the pixel is bright and lengthened if it is dim.
Along with a large saturation output charge on each pixel, using this function to lengthen the integration time of certain pixels makes it possible to effectively detect weak spectral signals. This is very useful in spectroscopy applications where light levels vary across the sample spectrum.
The series offers much smoother response in the UV region than conventional CMOS detectors whilst still offering high UV sensitivity. In addition to the features above, wide dynamic range and excellent linearity continue to be achieved, thus making the S10121 to S10124 series a suitable solution for spectroscopy applications.