Visual surface inspection by iLux lighting systems
Surfaces – quality and cost under control
The special task of analyzing the quality of a product by viewing its surface requires a specially adapted lighting. This is because diffused light which is normally installed in production halls and above workstations does not render the contrasts well enough to visualize the defects properly.
Therefore iLux lighting systems and their patented light sails illuminate the surfaces to be inspected homogenously with directed light. Thus, defects get a clearly visible structure so that they can be seen easily. The operators are no longer forced to scan the surface inch by inch, but they now react to light reflexes emitted by the defects.
Hence, iLux enables a quick and reliable detection helping to cut down consequential cost.
Automatic or visual detection?
Despite the enormous technical progress, camera-based surface inspection systems still remain far from reaching the visual performance of the human eye. Thus, visual inspection is still essential for the training of camera systems as well as for the detection of defects that will not be recognized by the software.
Nowadays, both systems are used side by side. Once the camera system recognizes a defect which it cannot categorize properly, the operators get a signal enabling them to have a closer look on that section. This can also be done by stoning during slow motion or line stop if necessary. Hence, the ultimate ship-or-block decision is being taken by a human. This is to make sure that false alarms do not block production capacity unnecessarily.
The automatic and the visual inspection complement one another perfectly.
Seeing more with less light
Many inspection stands are equipped with fluorescent tubes producing direct and diffused light with lux levels ranging from 2000 to 5000 lx. Under these conditions, the visual detection is very difficult and also very exhausting. Light which is too bright is stressing the human eye rather than improving the recognition.
Therefore, we define the optimum lux level based on the defective samples we examine in our showroom also taking into account ergonomic aspects. Due to the directed light, the lux levels can often be dimmed down to 500 to 1000 lx. This increases the visual performance and the concentration enormously.
iLux lighting systems therefore enable concentrated detection over a long period of time.
In our team, we have electrical engineers, lighting designers, CAD designers and mechanics. They all care about the planning, delivery and installation of our lighting systems - hand in hand with the customer.
Our methods and our portfolio
By means of tests in our light studio, on-site visits and the documents provided by the customer, we design each lighting system individually. Besides our main field of activity, i.e. illuminating inspection workplaces, we also design and deliver lighting for the surrounding areas as well as booths and canopies against random light. There will be an increasing amount of lighting systems for normal working areas such as assembly stations or for color-proofing purposes. Within the scope of counseling meetings, we also give advice if you need further information on lighting. Do not hesitate to ask for a quote.