Optical space monitoring apparatus comprising light guiding fibers transmitting light through the space to be monitored

Abstract

An apparatus for optically monitoring a space, the apparatus including light guiding fibers for transmitting received radiation to a sensor device. The light inlets are arranged in an array while the sensors are arranged in a row which is read out in parallel fashion.

We claim: 
     
       1. An optical space monitoring apparatus comprising a first set of light guiding fibers and a second set of light guiding fibers, each light guiding fiber having a light inlet and a light outlet the light inlets of said first and second sets of light guiding fibers being arranged in a common array, the light outlets of said first set of light guiding fibers being connected to a first light sensor row, and the light outlets of said second set of light guiding fibers being connected to a second light sensor row with an optical dispersion element being disposed between said second fiber light outlets and the associated light sensor row, and the sensors of said first and second light sensor rows being read out in parallel. 
     
     
       2. An optical space monitoring apparatus disposed on a flue gas channel defined by a first wall portion and a second wall portion opposite said first wall portion, the apparatus comprising a first set of light guiding fibers having a light inlet and a light outlet, a second set of light guiding fibers having a light inlet and a light outlet, a third set of light guiding fibers having a light inlet and a light outlet, a fourth set of light guiding fibers having a light inlet and a light outlet, the light inlets of said first and third sets being connected to light source means, the light inlets of said second set being mounted in an array configuration in said first wall portion, the light inlets of said fourth set being mounted in an array configuration in said second wall portion, the light outlets of said first set being mounted in said first wall portion opposite the light inlets of said fourth set, the light outlets of said third set being mounted in said second wall portion opposite the light inlets of said second set, the light outlets of said second set being connected to a first light sensor row, the light outlets of said fourth set being connected to a second light sensor row, the sensors of said first and second light sensor rows being read out in parallel.