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Find a line scan camera for machine vision

STEMMER IMAGING offers one of the most comprehensive ranges of line scan cameras and vision systems for industrial and non-industrial applications.
 
On this page you will find a large selection of high-performance camera models for a wide range of requirements - as well as further information on the subject of line scan camera technology.

What is a line scan camera?

Line scan cameras are specialised camera systems that capture images line by line rather than as a whole. They are ideal for applications in which the test object moves continuously beneath the camera, such as on conveyor belts or rotating rollers.

Unlike area scan cameras, line scan cameras enable extremely high resolution and image quality, even with very fast processes. They are therefore the preferred choice for inspection tasks, print image checks, surface analysis and sorting processes — wherever precise image processing in motion is required.

Explore our Line Scan Camera Models

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Questions about our line scan cameras? We will be happy to assist you!

Our experts will help you select the right line scan camera for your application - from resolution and sensor type to the interface. Use our contact form or call us directly.

We offer more than just cameras: Your project – our service

You gain a partner who will support you throughout your project, from selection and system integration to software configuration, calibration and ongoing optimization. You can always rely on our support!
 
Our team will support you with:
  • compilation of all components
  • installation of your software and vision systems
  • customization to your processes and requirements.
Find out more about our services now.

High-speed linescan camera system

How does a line scan camera work?

Line scan cameras, also known as line scan cameras, capture images line by line rather than as a whole. This means that a single row of pixels continuously records image information as the object moves beneath the camera. These lines are then used to create a complete image. This technology is ideal for continuous processes, such as those found on conveyor belts or in rolling mills, wherever high speed and resolution are required.
 
For example, the camera consists of a linear image sensor with 4,096 pixels. As the object moves past, the sensor scans the image line by line. This is synchronised with the movement of the object to produce precise, distortion-free images. Precise coordination between the line frequency and feed speed is important here.
Unlike the area scan camera, the line scan camera uses the principle of 'scanning in motion'. The sensor continuously supplies image lines that are combined into a 2D image using software or a frame grabber. This enables high resolutions in the direction of movement and consistent image quality, even with challenging surfaces or light fluctuations. Depending on the application, technologies such as TDI can be used to enhance light sensitivity.
 
Depending on the surface quality and material of the test object, line scan cameras are available with sensors that capture the visible range in monochrome and color, as well as the non-visible ranges of UV, NIR, and SWIR.

Which line scan camera is right for you? Our guide will help you choose.

The requirements for a line scan camera can vary greatly depending on the application. The following questions will give you an initial overview and help you quickly find the right camera in the product filter:

1. How high should the resolution be?

The more detailed the image you want to capture, the higher the resolution should be (e.g. 2K, 4K, 8K, 16K or 32K). A lower resolution is often sufficient for simple sorting tasks, but significantly higher resolutions are required for inspecting printed images or electronics.

2. How fast does the object move?

The line rate determines how quickly the camera can capture images. For very fast processes, such as those involving conveyor belts or web inspection, cameras with a rates over 100 kHz and up to 1 MHz are recommended.

3. What type of image do you need?

Depending on the application, choose from the following options:
  • Monochrome (high contrast, simple evaluation);
  • Colour (RGB) (e.g. pressure testing);
  • SWIR/UV/VIS-NIR for special material analyses.

4. Which scanning technology is right for you?

  • Line scan is the standard solution for continuous processes.
  • TDI (Time Delay Integration) increases the light yield for dark or fast objects.

5. Which interface suits your system?

Depending on your setup, choose from Gigabit Ethernet, CameraLink or CoaXPress. These influence the data rate, cable length and compatibility.
Still unsure? Contact us today for a free, no-obligation consultation!
Our machine vision experts are ready to help you find the best possible solution for your project!

Other frequently asked questions about our line scan cameras

How much does a line scan camera or vision system cost?

The cost depends heavily on the individual requirements. Factors that influence the cost include the desired resolution, line frequency, sensor technology, interface, and necessary peripherals, such as lighting, lenses, and software. The complexity of the application — for example, whether simple inspection or high-precision calibration is required — also plays an important role.
 
Our experts will be happy to advise you on finding the right technical and economic solution for your project. Our goal is to provide the most efficient and cost-effective solution for your needs.

What is the difference between a line scan camera and an area scan camera?

 
Area scan cameras capture complete images instantly, just like a normal digital camera. Line scan cameras, on the other hand, capture one image line at a time, composing a complete image from many individual lines as the object moves.
 
Line scan cameras are used when very high resolutions, uniform movement, or the optical inspection of continuous materials are required, for example on conveyor belts, roll goods, or rotating rollers. Area scan cameras are more suitable for stationary or slowly moving objects.

How is a line scan camera calibrated?

 
Although calibrating a line scan camera is similar to calibrating an area scan camera, it has some special requirements. Since line scan cameras only capture one line of pixels at a time, the complete image is built up line by line as the object or camera moves. To correctly relate the camera to spatial dimensions, a special calibration pattern is usually used, such as calibration strips or a precise object with known dimensions.
 
Calibration is carried out using a calibration transformation object in the software, which creates a geometric mapping between the camera coordinates and the real object geometry. This transformation takes object movement and lens distortions into account, enabling precise measurements in real units.
 
As the setup depends heavily on the application, the optics and the movement involved, it is advisable to use professional support. STEMMER IMAGING offers a wide range of line scan camera models, as well as comprehensive calibration services — from commissioning to system validation.

Do you offer support for software setup and configuration?

 
Yes, STEMMER IMAGING provides comprehensive support for setting up and configuring your machine vision systems. As part of the 'Software Installation & Configuration' service, we ensure that your systems are optimally set up. This includes installing the desired software and configuring and adapting the system settings to your application's specific requirements. The aim is to ensure the smooth commissioning and stable operation of your vision solution.
Further information on this service can be found here.

Can I obtain a complete machine vision system from you, including a camera, lighting and an evaluation unit?

 
Yes, STEMMER IMAGING offers complete vision systems as a one-stop shop, including cameras, lighting, optics, software and evaluation units. You will benefit from technical advice and support during implementation, as well as a manufacturer-neutral approach. STEMMER IMAGING draws on a broad portfolio of products from many well-known manufacturers to create the optimal combination of items for your application. This ensures you receive the best system and value for money.
 
Our engineering services cover everything from design and integration to commissioning, and are tailor-made, efficient and application-oriented.
Find out more about our engineering services.
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