How to design a telecentric lens

Date:2019-08-20 Author: Click:

The telecentric lens is designed to eliminate the difference in magnification caused by the inconsistent distance between the measured object (or CCD chip) and the lens. The design principle of telecentric lens classification is as follows:

1. Object-side telecentric optical path design principle and function:

Telecentric lens

The convergence center of the principal ray of the object side parallel to the optical axis is located at the image side infinity, which is called the object-centric telecentric optical path. Its function is: it can eliminate the reading error caused by the inaccurate focus of the object.

2. Principle and function of Xiangfang Yuanxin optical path design:

The center of convergence of the principal rays of the image side parallel to the optical axis is located at the object side infinity, which is called: the telecentric optical path of the image side. Its function is: it can eliminate the measurement error introduced by the in-focus of the image side.

3. Design principle and function of telecentric optical path on both sides:

Combined the dual effects of object-side / image-side telecentricity. Mainly used in the field of visual measurement inspection.

Dehong telecentric lens is a high-precision lens designed to make full use of optical imaging characteristics and fully consider the effect of light in imaging. At present, it has been widely used in the field of machine vision precision measurement and high-precision detection.