Machine vision is an automated inspection solution for visual defects in the production. The vision system solves an otherwise time-consuming manual inspection task.

Vision systems are also very accurate optical instruments capable of measuring dimensions down to nanometers – below the wavelength of visible light, or in harsh environments like in steelworks.

The Vision system

A vision system normally contains a light source, a camera with optics and a computer.

Simple jobs can be solved with smart cameras which is just a camera with build in computer and a light source.

When the customer presents us with an inspection job, we look at the whole concept. First of all - is it feasible? And will the benefit be justified compared to the cost? Basically will it make sense?

Then we ask for samples or good pictures of the part, process or installation. If relevant, we want to see samples. The samples must contain the marginal defects. These are the defects, you may accept as good or as a reject. The marginal defects determine the sensitivity of the system.

After some work JLI can normally give a fixed price quotation. We base our proposal on experience from similar projects and calculations using the latest hardware and software.

If there is doubt about the sensitivity, speed or other parameters, we often suggest a paid preliminary study. This will investigate all critical parts in the job and provide statistical analysis showing how well the vision system will work in real production. The preliminary report will be used to verify that the vision system will operate as predicted.

The preliminary report is not an extra cost to the project, as this is part of the development. By doing the preliminary investigation you take out the risk of the project and get a better understanding of the limits and benefits.

The vision system is very rugged and we have several systems installed in steel- and glassworks. These industries are characterized by dust, heat and vibration, but if the systems are designed correctly, it is our experience that they can work flawlessly for 15 years or more. When working for the medical device industry zero defects are demanded. This will of course add extra cost for testing, validation and documentation

The smart cameras do not take up more space than an ordinary small surveillance camera. These days LED’s are used for illumination and these light sources require very little space.

If you need more powerful systems they can come in floor standing rack, taking up space like a refrigerator. These large systems are typically installed in a computer room, while cameras and lights are out on the factory floor.

Depending on the task, we use solutions and software developed over the last 35 years.

The most important factor when developing a reliable system is experience. - Experience from many industries, and many different applications. JLI have delivered more than a thousand systems.

The fastest systems make 60.000 exposures and analysis a second. These are systems for finding minute defects in glass tubes.

There are few practical limitations to speed. If the computer is not fast enough you can step up to more powerful equipment, or simply add more CPU power.

There are several levels of access protection in our systems. JLI have full access to programs. The super user can make adjustments to tolerances and assign staff to operate the equipment. Factory personnel may reset counters or change parameters when changing production. All levels are protected by passwords.

The strategy is designed according to the requirements of the customer’s organization.

Basically in all formats. We have interfaced our systems to a great number of standards and protocols since 1985. Don’t worry. We can make it work.

JLI can supply turn key systems including mechanics. We cooperate with the best machine builders.

Guarantees & references

The system will be tested thoroughly before shipping from JLI. The customers normally take part in the Factory Acceptance Test at JLI.

We will not install the system at the customer’s location before we agree on the performance.

After installation JLI will monitor the system over the Internet every day the first week. -Then once a week and after that on demand.

None. We work in all kind of industries and cannot have certification for them all. We ask our customers about the requirements demanded and supply the equipment according to the relevant standards.

JLI have worked with FDA rules the last 30 years and can deliver equipment to the most stringent demands. We are also familiar with the requirements in heavy industries and laboratories.

The features are discussed and agreed with the customers. We develop the systems for the customer and make sure that it will do the job, and be a success.

Our guarantee is the “No Cure No Pay” clause in our quotation. Basically JLI will look at the job and make sure that it will work. We cannot expect that our customers understand all the implications of automating with vision technology. JLI are the experts and must therefore take responsibility for the solution.

Yes it does work. We give a functional guarantee on all our systems. JLI have supplied vision systems for more than 30 years to a big pharmaceutical company where we inspect injection systems. Three parts are inspected and we have about 40 systems in operation, performing five million inspections every day or one and a half billion inspections a year.

These are critical inspections as patient safety is involved.

In the glass industry we inspect tubes, and have so far inspected 70 million Km (halfway to the Sun) of glass tubes where we find defects down to 5 µm.

Our vision systems do work.

Our customers are quite secretive with their production and it is normally not possible to invite customers to see our systems in operation. However, at JLI we always have demonstration models and equipment being developed, so a visit to JLI may be worth while.

We have many references. Ask us and we will provide contact to the relevant customers.


Prices goes from half a million € for really complex systems to 15.000 € for the simplest.

Payback time can be as short as two months.

Yes, JLI offer discounts on orders for multiple systems ordered at the same time.

If you are a customer located outside Denmark we can provide finance through the Danish State EKF (Eksport Credit Organization). You can pay the equipment in 10 installments over 5 years. If the payback time is one year you will have a positive cash flow from day one.

Still have questions?

Get in touch with one of our experts! We are ready for any challenge that you may face in your production.