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MTF measurements on real time for performance analysis of electro-optical systems

The need of methods and tools that assist in determining the performance of optical systems is actually increasing. One 
of the most used methods to perform analysis of optical systems is to measure the Modulation Transfer Function (MTF). 
The MTF represents a direct and quantitative verification of the image quality. This paper presents the implementation of 
the software, in order to calculate the MTF of electro-optical systems. The software was used for calculating the MTF of 
Digital Fundus Camera, Thermal Imager and Ophthalmologic Surgery Microscope. The MTF information aids the 
analysis of alignment and measurement of optical quality, and also defines the limit resolution of optical systems. The 
results obtained with the Fundus Camera and Thermal Imager was compared with the theoretical values. For the 
Microscope, the results were compared with MTF measured of Microscope Zeiss model, which is the quality standard of 
ophthalmological microscope.