Fig. 4 Measurement field of the infrared camera TIM representing the 23° x 17° lens, dimensions in mm, not to
scale
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 (not shown in the drawing above,
see Fig. 4)
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 TIMConnect has an algorithm which corrects this distortion.
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