| 摘要 |
PURPOSE:To simplify a structure and to reduce the size and weight of a device by delaying the outputs of plural sensor elements of respective units through mutually different number of stages of charge transfer means and summing the outputs by an adder. CONSTITUTION:Infrared sensor elements 4-1 placed on a substrate 10 are separately amplified (13a-13d) so as to be used as the 1st-4th channels sequentially from above. The 1st-3rd channels are inputted into charge transfer means 14a'-14c' that are delay means respectively. The means 14a'-14c' are weighted by three-, two- and one-stage charge transfer elements BBDs so as to be transferred and delayed in accordance with clock pulses from clock pulse generating means 50. The outputs O1-O3 from the means 14a-14c and the output O4 from the amplifier 13d are summed by the adder 16 to output an added output signal E0 from a terminal 202 to the main body of an infrared video device. In such a manner, the delay at the means 14a'-14c' is executed surely, while liminating LPF which was essential heretofore and only one kind of clock pulses is sufficient resulting in simplified structure and reduction in costs.
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