| 摘要 |
PURPOSE:To obtain stereoscopic information and to selectively change over a plurality of photoelectric converters by dividing output signals from multiple photoelectric converting elements for picking up the forward scene into a plurarity of signal pulses each having a range of level, counting the number of pulses within each range for a predetermined period and comparing the number of pulses with the reference pulses. CONSTITUTION:Numeral nH is defined as a number of pulses having level of higher than T2 issued from counter circuit 29 for divided pulse levels in eachpredetermined interval and numeral nM is defined as a number of pulses having level between T1 and T2. When nH is larger than umber of reference pulses n1. photodetecting elements 27, 28 are passed the signals so as to pass the signals from the photodetecting elements 24-28 for the stereoscopic observa tion and only one band for observing the directly below point. When the number of pulses nMM is smaller than the preset number of reference pulses and the number of pulses nH above level T2 does not arraive at the preset number of reference pulses n1, the output signal from photocells 24-26 for performing multiband observation are allowed to pass from the output signals from photocells 24-28. |
