Shallow solution bi-telecentric lens

As a branch of the industrial lens, the bi-telecentric lens is increasingly used in various types of machine vision projects and exerts its unique advantages. These advantages can often uniquely solve many complex and difficult project problems, but because it is not as popular as general industrial lenses, many engineers do not make good use of bi-telecentric lenses when making solutions, and cannot make projects The solution resulted in an efficient and low-cost solution. Below I will combine some practical application cases to analyze and discuss with you, under what circumstances why a bi-telecentric lens is used.

Avoid multi-station settings, simplify the cooperation between stations, save hardware expenses, and save redundant software development.

In visual inspection projects, due to the high inspection requirements or the special shape of the inspected workpiece, it is often necessary to select multiple stations to complete the inspection task in the traditional way. For example, a workpiece with a large thickness (large height drop size) or a curved structure.

Multiple hole positions, the workpiece itself has a thickness, the flange plate, the gear plate and the body have a height difference

The inner hole has cogging, the outer diameter has steps, and there is a height drop. Many different outer diameters, such as threads, tooth patterns, etc.

The above types are some representative workpieces, they all have uneven appearance features, threads, flanges, multi-thickness holes, inner grooves, outer diameter steps, etc. These features are not on the same detection plane in visual inspection. Generally, when taking pictures with a lens, the depth of field is relatively small, and the metal surface has a relatively strong reflection. It is often impossible to use an optical system to detect more features at the same time.

This is a good one-time solution to these problems if a double telecentric solution is used.

Comparison of shooting effects of spring workpieces

Spring ordinary lens shooting (above) Spring double telecentric lens shooting (above)

Gear ordinary lens shooting (above) Gear double telecentric lens shooting (above)

More and more workpiece inspection projects have achieved the effect of reducing work stations, optimizing software, improving inspection efficiency, and saving costs through double telecentric technology. We hope that through our continuous efforts, we can create more value for everyone.