Key feature of the Polarizer filters
- Reduce reflections
- Increase contrast
- High extinction ratio
- Pre-cut custom shapes for polarizing films on request
Polarizer Filters
Reduce reflections and increases contrast
Polarizer filters for the industry
Schneider Kreuznach polarizers are designed to fulfill industrial requirements. They are made of dichroic laminated polarizing polymers cemented between 2 slides of protective glass. Additional we offer polarizing film for larger sizes or customized shapes and flexible solutions. Polarizing Films consist of long chain polymers, which are aligned by a stretching process to produce the polarization effect. The polarizing film is covered on both sides with cellulose triacetate (TAC) for protection and is therefore mechanically stable. Call us to discuss your OEM and custom requirements.
What is the function of a polarizer filter?
A polarization filter, also known as polarizer, is an optical filter that selectively blocks or transmits light waves that are polarized in a specific direction. The filter consists of a polarizing material that absorbs or reflects light waves that are not aligned with the desired polarisation direction.
Where is polarizer filter used?
In industry, polarizer filters are used in a variety of applications where it is necessary to control the polarization of light. For example, in imaging applications such as microscopy, polarizer filters are used to improve contrast and image quality by selectively blocking or transmitting polarized light waves. They are also used in LCD displays to control the polarization of light passing through the liquid crystal cells, enabling the production of high-quality, high-contrast displays.
Status
Order-Name
Transmittance [%]
Extinction ratio
Thickness [mm]
Wavelength Range [nm]
Filter mounted
Thread size
Thread size
Filter unmounted
Color
Transmission data
Applications & Markets of Polarizer Filters
Traffic and
surveillance
Traffic and surveillance systems use cameras and image processing to monitor and manage traffic flow and public safety.
Food Sorting
Food sorting involves the automatic separation of food products according to size, color, shape and quality.
3D and 2D
Measurement
3D and 2D measurement uses cameras and image processing to accurately measure the dimensions and geometry of objects.
Robotic Vision
Robotic vision can identify objects, measure distances and track motion, enabling robots to perform complex tasks autonomously.
Mounts for Polarizer filters
SN2-Mount
The SN2-Mount is designed for polarizers and achieves highest possible aperture, avoiding vignetting in machine vision systems. Its unique locking mechanism fixes the correct orientation, even in typical industrial environment. The filters are glued into the mount to secure them against vibrations when integrated into robots or production lines. Ideal to be used in automated fabrication.
SN2-Mounts have a female and male M-thread, and can be stacked if several filters must be combined.
Key features:
• Rotatable
• High clear Aperture
• No vignetting
• Stackable
• Robust
• Black Anodized Brass
Applications:
• Mounted on lenses in imaging applications
• Mounted on measurement instruments
| Thread | Diameter | Clear | Thickness |
| Aperture | |||
| M 25.5x0.5 | 27 mm | 22.7 mm | 7.4 mm |
| M 27.0x0.5 | 28.5 mm | 23.7 mm | 7.4 mm |
| M 30.5x0.5 | 32 mm | 26.7 mm | 7.4 mm |
| M 35.5 x0.5 | 37 mm | 31.7 mm | 7.4 mm |
| M 37.0x0.75 | 38.5 mm | 32.7 mm | 7.4 mm |
| M 40.5x0.5 | 42 mm | 36.7 mm | 7.4 mm |
| M 43.0x0.75 | 44.5 mm | 37.7 mm | 7.4 mm |
| M 46.0x0.75 | 47.5 mm | 41.7 mm | 7.4 mm |
| M 49.0x0.75 | 50.5 mm | 44.7 mm | 7.4 mm |
DH-Mount
Schneider-Kreuznach offers a variety of mounts for polarizers with common thread sizes to fit on most camera lens systems. The DH-Mount is rotatable to adjust polarization axis in the required orientation. Filters are held by retainer rings.
All DH-Mounts have a female and male M-thread and can be stacked if several filters must be combined.
Key features:
• Rotatable
• Stackable
• Black Anodized Brass
Applications:
• Mounted on lenses in imaging applications
• Mounted on measurement instruments
| Thread | Diameter | Clear | Thickness |
| Aperture | |||
| M 25.5x0.5 | 27 mm | 20.8 mm | 9.2 mm |
| M 27.0x0.5 | 28.5 mm | 21.8 mm | 9.2 mm |
| M 30.5x0.5 | 32 mm | 25.8 mm | 9.2 mm |
| M 35.5 x0.5 | 37 mm | 30.8 mm | 9.2 mm |
| M 37.0x0.75 | 38.5 mm | 31.8 mm | 9.2 mm |
| M 40.5x0.5 | 42 mm | 35.8 mm | 9.2 mm |
| M 43.0x0.75 | 44.5 mm | 37.8 mm | 9.2 mm |
| M 46.0x0.75 | 47.5 mm | 40.8 mm | 9.2 mm |
| M 49.0x0.75 | 50.5 mm | 43.8 mm | 9.2 mm |
| M 52.0x0.75 | 53.5 mm | 46.8 mm | 9.2 mm |
| M 55.0x0.75 | 56.5 mm | 49.8 mm | 9.2 mm |
| M 58.0x0.75 | 59.5 mm | 52.8 mm | 9.2 mm |
| M 62.0x0.75 | 63.5 mm | 56.8 mm | 9.2 mm |
| M 67.0x0.75 | 68.5 mm | 61.8 mm | 9.2 mm |
Product Highlights
Polarizer - IF AUF/IF AUF MRC
The IF AUF and IF AUF MRC linear polarising filters are characterised by a high degree of polarisation. This results in a high extinction of the reflected light component in the visible light range (VIS, 420 nm to 750 nm). This suppresses unwanted reflections. The result is a better image and a higher level of contrast. Polarising filters can also make things visible that are otherwise invisible, such as tension in plastics. IF AUF filters are also available with an MRC coating to reduce reflections at the air-glass interface.
Environmental Facts of the polarizer filters
Our industrial optical polarizer filters are tested to DIN standards to ensure they meet stringent environmental requirements. These tests check the durability of the polarizer filters, their resistance to temperature changes and their ability to withstand exposure to harsh chemicals and other environmental stressors. This ensures that the polarizer filters are up to the task in demanding industrial applications, providing consistent performance and reliability over time.
- Slow temperature cycling
- -25°C - +70°C
5 cycles a 12hDIN ISO 9022-2-14-03 -1
- Damp heat, cyclic
- -23°C - +40°C
80% - 95% rel. humidity DIN ISO 9022-2-16-01-1
- Adhesive tape test
- <<1 s a 25 mm
jerky pull-offDIN ISO 9211-4-02-03
- Chemical resistant
- 24 h
45 g NaCl in 1 | deionised water | 23 ± 2°CDIN ISO 9211-4-04-05
Overview of all Schneider-Kreuznach Products
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MORE optical filters
Looking for more ways to optimize your industrial image processing? Check out our full range of optical filters designed to meet the needs of a wide range of industrial applications. Our selection of high quality optical filters can help you achieve outstanding results in challenging environments while protecting your lens.
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