In the new energy lithium battery industry, there will be pole ear folding and pole ear dislocation in the detection stage, so it is necessary to detect the defects and measure the size of the defects.
As the dislocation depth is more than 10mm, ordinary lens cannot meet the requirements. To this end, Chiopt specially developed ultra depth of field autofocus telephoto lens for lithium battery industry to meet the testing requirements.
In order to deal with the polar ear detection, CHIOPT proposed the application scheme of autofocus FA lens and telecentric lens.
However, autofocus FA lens can meet the requirements of depth of field through electric focus. Due to the disparity of FA lens, the composite image magnification is inconsistent, so size measurement cannot be carried out.
Telecentric lens takes pictures with consistent magnification, without parallax, but the depth of field is not enough to meet the requirements of detection.
There is also a liquid lens that can drive the liquid lens to focus, meet the depth of field requirements, and take pictures at the same rate, which can be synthesized and analyzed, but the cost is high.
Based on the above review scheme, CHIOPT customized development of autofocus telecentric lens for customers. , super depth of field 22mm can achieve fast and accurate focusing inside the lens,
because it is a telecentric lens, it can also ensure constant magnification.
This ultra depth of field autofocus telephoto lens compares to other solutions have the advantages below:
1. Cost effective
2. Widely used, except new energy lithium battery industry can also be applied to other industries
3. It can quickly realize focusing and accurate measurement for objects with large height differences
4. Accurate measurement can be achieved by fusion of multiple pictures for objects with inclined surfaces