Interpretation of the line scan lens MTF curve

Introduction: MTF is an acronym for Modulation Transfer Function. It is one of the ways to describe the performance of the lens. The MTF curve can be used to judge the ability of the lens to restore contrast. This article introduces the interpretation of the MTF curve of the line scan lens.


MTF is an acronym for Modulation Transfer Function. It is one of the ways to describe the performance of the lens. The MTF curve can be used to judge the ability of the lens to restore contrast. This article introduces the interpretation of the MTF curve of the line scan lens.


camera lens

I. Introduction to MTF curve:


MTF is an acronym for Modulation Transfer Function. It is one of the ways to describe the performance of the lens. The MTF curve can be used to judge the ability of the lens to restore contrast.


The MTF curve can reflect the comprehensive performance of a lens. Basically, for any lens, as the line pairs gradually increase (which can be simply understood as the precision of precision measurement gradually increases), the contrast is gradually decreasing , So the MTF curve we usually see is a line that gradually drops down.


1) The following information can be obtained from the MTF curve:


A. Image surface size supported by the lens;


B, the pixel size supported by the lens;


C, imaging consistency of the center and edge of the lens.


2) The MTF curve of the same lens is different under different apertures and different magnifications.


3) Relationship between MTF curve and MTH curve:


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