Testing requirements

Test the LOGO parts surface scratches, impurities, 12 kinds of defects such as bruising category.

the difficulty of the Project

Ordinary camera resolution limit cannot meet the shooting accuracy, ordinary lens distortion will cause image distortion produce software misjudgment, image aperture must be strictly controlled, satisfy the reflective light flaw from the Angle of gray scale effect.

The solution

Use BT series double telecentric lens.

Application advantages

Low distortion, distortion, generally less than 0.1%, for 1/20 of the normal lens.

High resolution, even with small pixel image sensor can also generate high resolution images, CFT is (The contrast transfer function) 70 lp/mm > 30%.

Application development

In view of the mining as demand for high detail resolution (optical transfer function at a fixed rate within the limit of diffraction),image distortion of quantitative control as requirement (0.1%), the ambient light control in a fixed range( fixed aperture, fixed value F ).These three inspection application, BT series double telecentric lens can be one-time perfect solution.

Author：BTOS Editor