Telecentric lenses, as a key component in high-precision measurement solutions, play a pivotal role in the field of industrial inspection and measurement due to their unique functional characteristics. The following is a detailed analysis of the three core functions of telecentric lenses:

I. Clearly show the product outline, accurate edge grabbing

Telecentric lenses, with their superior optical performance, are able to clearly and accurately capture and visualize the details of a product's contours. This feature is critical for applications that require high precision measurements. By accurately gripping the edges, the telecentric lens ensures that the edges of the product are accurately recognized during the measurement process, thus greatly improving the accuracy and reliability of the measurement.

II. Low distortion to ensure measurement accuracy

Aberration is one of the common sources of error in optical systems, which leads to image distortion and thus affects the accuracy of measurement results. Telecentric lenses effectively reduce the effects of aberrations through special optical design, allowing the product to remain in its original shape during the measurement process without distortion due to lens aberrations. This feature is especially important for application scenarios that require high-precision dimensional measurements, as it ensures the accuracy and consistency of the measurement results.

III. High depth of field to reduce image distortion

In practical applications, the objects to be measured often have different heights and shapes. Traditional lenses are prone to image distortion due to insufficient depth of field when facing such complex scenes. Telecentric lenses, on the other hand, with their high depth of field, are able to significantly reduce the image distortion caused by changes in the height of the object. This means that even when measuring objects with large height differences, telecentric lenses maintain image stability and clarity, ensuring accurate measurement results.

With its core functions of clearly displaying product contours, precise edge gripping, low distortion, and high depth of field, telecentric lenses make it easy to achieve high-precision measurements in inspection equipment such as flash meters, image measuring machines, or three-dimensional measuring machines.