Princeton Instruments and Acton Research Princeton Instruments the leading manufacturers of high-performance cooled CCD, EMCCD, ICCD and InGaAs detectors for imaging, spectroscopy and x-ray detection and industrial imaging. Our cooled CCD cameras outperform other imaging technologies in terms of image quality, noise, and dynamic range. Acton Research has a 40-year history of innovative design and manufacture of multi grating, multi port single, double and triple spectrographs, monochromators and spectroscopy accessories for research and industry.