Application of Bi-telecentric Lens in Optical Fiber Communication Conductor

Application of Bi-telecentric Lens in Optical Fiber Communication Conductor Detection

 As visual inspection becomes more and more intelligent, the machine belt replaces the traditional human eye for detection and judgment, that is, the machined vision product converts the captured target into an image signal and transmits it to a dedicated image processing system to obtain the captured target. The morphological information is converted into digital signals according to pixel distribution, brightness, color and other information; the image system performs various operations on these signals to extract the characteristics of the target, and then controls the field equipment operations based on the results of the discrimination.

As an imaging device, industrial lenses usually form a complete image acquisition system together with light sources and cameras, so the choice of industrial lenses is restricted by the requirements of the entire system.

Sometimes, when we are doing visual inspection, we will encounter the following problems: unable to detect space objects, unable to control field changes, unable to control image distortion, unable to achieve higher sharpness, large distortion, reflection, etc. When shooting with the lens and light source, the problem cannot be effectively solved, which uses a bi-telecentric lens.

The most important feature of a telecentric lens is that it can overcome perspective errors, and the magnification is the same in the depth of field, and the phenomenon of near and far will not occur. , Large depth of field, zero distortion, no distortion, high contrast and high resolution.

For example, in the detection of chipping, scratches and defects on the surface of a cylindrical optical fiber communication conductor of Φ1 * 4mm, a bi-telecentric lens and light source are used. Compared with the previous detection of the human eye with a magnifying glass under two 40w incandescent lamps, not only the shooting is clear, the detection result is accurate, and the efficiency is improved, which saves the cost of manpower and material resources.