The difference between a bi-telecentric lens and a telecentric lens

Date:2016-07-27 Author: Click:

Bi-telecentric and telecentric lenses

Image side lens

For the telecentric lens on the image side, by placing an aperture stop on the object-side focal plane, the main light on the image side is parallel to the optical axis, so that although the installation position of the CCD chip is changed, the size of the projection image on the CCD chip is not changed.

Object lens

The object-side telecentric lens is to place the aperture stop on the image-side focal plane of the optical system. When the aperture stop is placed on the image-side focal plane, even if the object distance is changed, the image distance is changed, but the image height and There is no change, ie the measured object size does not change. Object-side telecentric lenses are used for industrial precision measurement with minimal distortion and high performance can achieve distortion-free.

双远心镜头

Bilateral telecentric lenses combine the advantages of the above two telecentric lenses. In industrial image processing, only object-side telecentric lenses are generally used. Occasionally there are telecentric lenses on both sides.

Dehong Telecentric Lens Industrial Lens Industrial Light Source Double Telecentric Lens