Advanced Photonix APX-Si0080E 8mm2 Eye Response Detector is a silicon PIN photodiode detector. The device, combined with a wide bandwidth, is designed to simulate the spectral response of the human eye. The Advanced Photonix APX-Si0080E 8mm2 eye response detector is available in a hermetic TO-5 Can package, ideal for photometry, radiometry, and film color processing.