Machine Vision Filters
Maximum precision, contrast, and stability for machine vision
In the world of machine vision, the image is the only source of data. An optical filter ensures that this source remains uncontaminated. It eliminates distracting ambient light, highlights key features, and protects your hardware. In short: Without the right filter, you’re wasting valuable system performance.
Get in touch with usThe Right Filter for Your Application
Choosing the right filter is often the key to the success or failure of an inspection. Every material, every surface, and every lighting condition presents different challenges. Whether you need to suppress reflections on metal, distinguish colors in food inspection, or isolate laser lines—we have the right optics.
Bandpass filter
The all-rounders. They let only a narrow wavelength range through and block everything else.
Multi-bandpass filter
Ideal for multispectral applications or intelligent transportation systems (ITS) to utilize multiple spectra simultaneously.
Long-pass filter
They block shorter wavelengths and are particularly useful for making fluorescence effects visible.
Short-pass / NIR-cut filter
Prevent infrared light from overwhelming the sensor—essential for natural color reproduction.
Neutral density (ND) filter
They reduce light levels evenly across the entire spectrum without distorting colors or contrasts.
Polarizing filter
Eliminate glare and reflections on shiny surfaces such as glass or metal.
Protective filter
Highly transparent lenses that protect your expensive lenses from dust, oil, and mechanical damage.
Acrylic filter
The shatterproof alternative for the food industry or environments with a high risk of vandalism.
Light Balancing Filter
Adjust the color temperature so that white light sources (such as LED or xenon) work perfectly with the sensor.
Diffusers
Ensure uniform light distribution and prevent distracting hotspots on your test object.
MidOpt
Global standard for industrial filters
MidOpt is regarded as the technological leader in optical components for image processing. The company develops filters that are precisely tailored to the high demands of industrial sensors. Its products stand out for their mechanical precision and the durability of their optical coatings. MidOpt is the top choice for system integrators, as its vast selection of wavelengths and mounts offers the right solution for virtually any project, available directly from stock.
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Consistent results despite changing ambient light
Lighting conditions in factory halls are rarely consistent. Sometimes the midday sun shines through the skylight; other times, the hall lighting flickers. Such fluctuations often lead to unreliable measurement results and false alarms. A bandpass filter precisely tuned to the wavelength of your lighting consistently blocks out these external interference factors. This ensures that your image contrast remains identical over 24 hours, completely unaffected by the environment.
Real contrast instead of artificial image noise
A blurry image cannot be effectively salvaged by using longer exposure times or digital gain. These methods usually only increase image noise and degrade image quality. With a targeted color filter, you can physically create the necessary contrast directly on the sensor. For example, if you use complementary colors to highlight features, you’ll obtain a clean data foundation that no software in the world can calculate with such precision afterward.
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