Application of Bi-telecentric Lenses in High Precision Mechanical Parts

In our daily life, study, and work, as common as mobile phones, computers, televisions and various household appliances, as large as automobiles, these products have been closely related to us and become an inseparable part, with more and more functions, The appearance is getting more and more beautiful, the integration is getting higher and higher, and the parts are getting smaller and smaller, and the corresponding people have higher requirements for their quality. Next, we will introduce the application of bi-telecentric lens in precision measurement in combination with its projects.

Detection requirements
Detecting and measuring the size and contour defects of precision machinery parts.

Project Difficulties
The precision mechanical parts themselves have various irregular longitudinal depths. The general optical system often adopts a multi-station photographing method because the depth of field is not large enough, and the general optical system is affected by the reflection of the corners of the metal parts. Dimensions will cause measurement errors due to corner reflections.

Solution
Use BT series bi-telecentric lens (can be used with TCL series parallel light source for better results).

Precision machinery parts inspection and measurement Precision machinery parts inspection and measurement Precision machinery parts inspection and measurement

The telecentric lens has a distortion of less than 0.1% in the full field of view and an ultra-high CTF, which can ensure that the entire optical system can accurately capture the clear contour of the workpiece without distortion. With high-precision measurement software, high-precision non-contact measurement of the workpiece can be completed, to avoid deviations caused by human factors, and to prevent uncontrollable factors such as scratches and deformations of the workpiece caused by contact measurement tools.