Scope of 360° View Lenses Inner Inspections

A common challenge faced by machine vision engineers is the inspection of hollow objects such as engine parts, containers, and tubes. In an application where the goal is to inspect defects along a cavity’s walls, standard lenses are often not capable of providing adequate coverage or resolution.

This is where Opto Engineering’s inner inspection lenses can be very powerful. We have developed three distinct lens series for these types of applications – the PCBP (boroscope), the PCHIL (pinhole), and the HC (hypercentric).

Starting with the PCBP: designed to be introduced into a hollow object, our PCBP incorporates a conical mirror that allows the user to capture a 360-degree view of the cavity walls. Built-in illumination keeps the device very compact and makes it suitable for simple 3D applications by means of panoramic triangulation techniques.

Alternatively for high throughput applications or for those where the introduction of a lens is not ideal, the PCHIL and the HC series can image both the bottom of hollow objects and their vertical walls from above.

Applications that often benefit from these 360 degree internal inspection lenses include surface defect detection, presence/absence, and alignment identification applications. These types of applications are commonly found in the automotive, pharmaceutical, cosmetics, medical, and beverage industrial sectors.