Spike-free optoelectronic amplifier having a multiplexer at all times being electrically separated from the output of a switch device
AssigneeSteinheil Optronik GmbH
InventorGerhard Krause
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Abstract
A optoelectronic circuit arrangement, for instance for thermal viewing equipment, comprises a plurality of independent photodetector elements, whose signals are combined by multiplexers. The multiplexer output is connected with the common input of a switched integrator, which applies integrated signals to an output switch device, steps being taken to ensure that the multiplexer is at all times electrically separated from the output of the output switch device. For this purpose the integrator has at least one channel with three electronic switching members which in a cyclic sequence perform the operations of "integration", "output of integral value to output" and "erase integral value".
Claims17
An optoelectronic circuit arrangement, comprising a plurality of independent photodetector elements and multiplexer means for combining signals from said photodetector elements, characterized by a switched integrator, means for connecting an output of the multiplexer means with a common input of said switched integrator, which is adapted to apply the integrated signal to an electronic output circuit device, and by means to ensure that the multiplexer is electrically separated from the output of the output switch at all times.
A spike-free optoelectronic amplifier comprising:
- a plurality of independent photodetectors for converting optical signals to electrical signals;
- a multiplexer connected to said photodetectors for combining said electrical signals;
- and
- a switched integrator connected to an output of said multiplexer for converting a spike or surge generated by said multiplexer into an offset potential thereby ensuring that said multiplexer is separated from a subsequent electrical circuit in terms of said spike or surge.
Dependencies are inferred from the claim text.