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Optical Charts
thermoMETER TIM 8 / thermoIMAGER TIM 40
Fig. 2 Dependency between field of view (FOV) and distance
HFOV
Horizontal enlargement of the total measuring at object level
VFOV
Vertical enlargement of the total measuring at object level
IFOV
Size at the single pixel at object level
DFOV
Diagonal dimension of the total measuring field at object level
MFOV
Recommended, smallest measured object size of 3 x 3 Pixel (thermoIMAGER TIM 40) and 2 x 2
(thermoMETER TIM 8), not shown in the drawing above
The following tables with examples showing what spot sizes and pixel sizes will be reached in which distance.
For individual configuration there are different lenses available. Wide angle lenses have a radial distortion due
to their large opening angle; the software TIM Connect has an algorithm which corrects this distortion. As an
alternative to the tables below, the optics calculator can also be used. You will find the latest software at:
https://www.micro-epsilon.com/temperature-sensors/thermoIMAGER/optics/