Industrial lenses are well specialized, what is the difference between telecentric lenses and FA lenses?

FA Industrial LensThe closer the overall target object is to the screen (shorter working distance), the bigger the image made. When using a normal screen for size inspection, there are the following problems:

1) the magnification is different because the object being inspected is not in the same inspection plane;

2) the lens aberration is large;

3) parallax, that is, when the object distance is increased, the magnification of the object is changed;

4) the screen is not high resolution;

5) Uncertainty in the edge area of the picture due to the graphic characteristics of the visual effect light. Uncertainty in the edges due to the influence of unreasonable light.

The Telecentric Lens can effectively solve the above problems of the ordinary picture, and there is no judgment error of this nature, so the Telecentric Lens can be used in high-precision testing, metrology and measurement. Telecentric lens (Telecentric), mainly for the correction of the traditional industrial lens parallax and design, it can be in a certain range of object distance, so that the magnification of the image will not change, which is not in the same object surface of the measured object is a very important application. Telecentric lens due to its unique parallel optical path design has been favored for machine vision applications that require high lens aberration. Telecentric lenses are high-end industrial lenses that typically have superior image quality and are particularly well suited for dimensional inspection.