Thermo-imaging apparatus

Abstract

Abstract 1. Thermal imaging apparatus having optical scanning means (AO) and a detector (DT) with detector elements which are at least approximately arranged in rows and columns, and having at least one summer (SM) and a gate circuit (TR), and having a monitoring circuit (UE) which checks the values of the signals emitted by the detector elements and recognises at least one possible incorrect value of a signal from a defective detector element, whereupon the assigned gates of the gate circuit (TR) are blocked in order to eliminate the incorrect detector element signals, characterised in that the summer (SM) has a plurality of delay elements in order to emit an output signal of the form S1 (t)+S2 (t-T1)+S3 (t-T2)+..., and that the gate circuit (TR) is inserted between the detector elements of the detector (DT) and the inputs of the summer (SM), and that between the summer (SM) and a following evaluating device (VG, NW, DA, M), there is inserted a correcting circuit (KS) which corrects the result of the summer (SM) in dependence upon the information about the defective detector elements supplied by the monitoring circuit (UE).

Inventors

• 👤 Gottfried Tschannen
• 👤 Robert Diamant

Bibliographic Details