| 摘要 |
PURPOSE:To extract the plural space frequency components in the light images projected into a photoelectric element array from the same photoelectric element outputs of said array be using vectoring means and addition means. CONSTITUTION:The photo diodes D1-D8 connected to the 1st switch group 5 constituting a photo diode array 1 are connected to holding circuits 13a-13h via sampling hold circuit 9 and 2nd switch group 11, and further terminals T1-T8 are connected to band-pass filters 19A-19C via vectoring circuits 30A, 30B and common conductors 50A, 50B acting as addition means. As a result of this, the photoelectric outputs i1-i8 outputted from the terminals T1-T9 are converted to vectors by being given with the phases delayed by switching element groups S21-S28, S31-38, S41-48, after and only the space frequency components are outputted from the band-pass filters 19A-19C. |
