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Polarizer Filters

Reduce reflections and increases contrast


Looking for high performance polarizing filters? Our polarizing filters reliably reduce reflections. At the same time, high contrast is maintained and image quality is not compromised.


Schneider-Kreuznach Polarizer Filters

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. Additionally 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 polarizing filter, also called a polarizer, consists of a polarizing film that allows partially polarized light to pass through. This eliminates reflections and increases contrast. 

Where is polarizer filter used?
In industry, polarizing filters are used in a variety of applications where polarized light is critical. 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. 


  • Reduce reflections: Minimize unwanted glare and reflections for clearer images.
  • Increase contrast: Enhance the distinction between different elements in an image.
  • High extinction ratio: Efficiently block unwanted light to achieve optimal polarization effects.
  • Pre-cut custom shapes for polarizing films on request: Tailor-made polarizer shapes for specific applications available upon request.



Transmittance [%]
Extinction ratio
Thickness [mm]
Wavelength Range [nm]
Filter mounted
Thread size
Filter unmounted
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Transmission data
Schneider-Kreuznach Polarizer Filter AUF
Linear Polarizing Glass
Datasheet View all
Schneider-Kreuznach Polarizer Filter AUF MRC
Linear Polarizing Glass
Datasheet View all
Schneider-Kreuznach Polarizer Filter IFK P-W 76 0.3
Linear Polarizing Film
IFK P-W 76 0.3
up to 3,000:1
Datasheet View all

Mounts for Polarizer filters


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:
High clear Aperture
No vignetting
​​​​​​​Black Anodized Brass

Mounted on lenses in imaging applications
Mounted on measurement instruments

Thread Diameter Clear Thickness
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


SN2 Filter-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:
Black Anodized Brass

Mounted on lenses in imaging applications
Mounted on measurement instruments

Thread Diameter Clear Thickness
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


DH Filter-Mount


Product Highlights

Polarizer - IF AUF/IF AUF MRC

Schneider-Kreuznach Polarizer Filter AUF

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.

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Polarizer - Polarizing film

Schneider-Kreuznach Polarizer Filter IFK P-W 76 0.3

The P-W 76 and P-W 64 polarizing films feature a high contrast (erasure) of 10,000:1 (P-W 76) and 40,000:1 (P-W 64), respectively. These films can be used to reduce interfering reflections in the visible range of 430 nm to 780 nm from reflective surfaces or to make stress patterns visible on transparent plastics. They are also used to enhance the contrast of images. The films can be cut into any shape using a laser cutter.


More Information

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 12h

DIN 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-off

DIN ISO 9211-4-02-03

Chemical resistant

24 h
45 g NaCl in 1 | deionised water | 23 ± 2°C

DIN ISO 9211-4-04-05


Benefits of Schneider-Kreuznach

Tradition meets Innovation: over 110 years of Optical Manufacturing Experience

Ever since the foundation in 1913 our staff have been perfecting our knowledge and technologies to bring you the best products in optics. Our manufacturing facilities in Bad Kreuznach, Germany, guarantee outstanding quality – Made in Germany. We continuously invest in our state-of-the-art machinery and in the education and training of our staff. Select your perfect filter from our large portfolio of optical filters. 

If you need a customized solution, we are your partner from the kick-off to the Project completion. Our extensive experience and in-depth knowledge of a wide range of applications enables us to provide you with solutions that are perfectly tailored to your needs. 

As a family owned company, we are passionate and committed to our customers and their success. You can expect long-term relationships based on trust and shared goals with us.

Custom Optical Filters for maximum Flexibility

We design and manufacture both the mechanics and the coatings of our filters at Schneider-Kreuznach. This enables us to produce customized optical filters that meet your exact requirements and guarantee the highest quality standards.

Improve the performance and accuracy of your machines by using our optical filters. Reduce annoying reflections, minimize unwanted wavelengths, and increase the efficiency of your processes. Our filters are the key to the smooth and efficient operation of your industrial systems. They are durable and robust, ensuring long-term use. 

Contact us to find the right solution for you.

Highest Quality and Reliability: our Filters put to the Test

Quality and reliability are top priorities at Schneider-Kreuznach. Our filters undergo rigorous quality control to ensure maximum reliability. We use only high quality glass from reputable manufacturers to achieve very low manufacturing tolerances. As a result, our filters are of consistently high quality. Their use allows you to accurately reproduce results, as the filters will perform nearly identically even after years of use.

Our industrial optical filters are rigorously tested to DIN and ISO standards to ensure they meet stringent environmental requirements. These tests evaluate their temperature stability and ability to withstand exposure to harsh chemicals and other environmental stressors. As a result, our filters excel in demanding industrial applications, providing consistent performance and reliability over time.

Precision down to the last detail: Our high vertical integration

We are proud of our technical expertise, which we consistently apply to the production of our lenses and optical filters through our high level of vertical integration at our Bad Kreuznach site. Each of the Schneider-Kreuznach products is manufactured with the utmost care and precision to provide you with the best possible performance and reliability.


We demand the highest standards of materials and manufacturing processes to ensure excellent image quality, starting with the production of the optics. Our standards go beyond the production of individual components. We master the entire production process from raw glass to finished filters and are able to process all common types of glass. Our special coating technologies give the optics or lenses the desired optical properties.


We do mechanical manufacturing in-house. We use the latest technologies and machinery to develop robust and durable filters. With our high-end 5-axis CNC milling machines, we have world-class machining capabilities that give us exceptional precision and flexibility. These powerful milling machines allow us to realize complex geometries and sophisticated contours in the mechanical components of our filters while maintaining high reproducibility. Electroplating is performed in-house under strict environmental conditions, allowing us to customize the surface coatings of our products to meet the specific requirements of our customers.


Our lenses are assembled in dedicated clean rooms that provide a clean and controlled environment and ensure they are free of contaminants. Our qualified staff with many years of experience and expertise perform precise adjustments and calibrate the optics to the highest quality with the lowest tolerances.

Testing and Quality Assurance

Our test technology and quality assurance reflect our high quality standards. We use state-of-the-art technologies such as interferometers and 3D coordinate measurement technology to test the lenses we manufacture to ensure they meet the highest standards. Our ISO 9001 certified processes, metrology rooms and procedures ensure consistent and reliable production to meet our customers' high expectations.

Different needs, individual solutions: Let us advise you

Our sales and engineering professionals provide customers with a high level of expertise and responsiveness. We understand that the needs of our industrial customers can be diverse and complex. Whether it's technical specifications, the exact application environment, special customizations, or other unique requirements, we take the time to understand each customer's unique needs and provide customized solutions.

Our advice ranges from selecting the right filter to assisting with integration into existing systems. You can count on our experts to provide the best support and find the perfect solution. Our in-depth application knowledge and proven optical expertise enable us to provide customized solutions that combine mechanical robustness, reliability and the highest imaging accuracy.

This is the result of our decades of experience with extremely tight tolerances. We even go so far as to design and build our own manufacturing and metrology systems if there is no equipment available on the market that is accurate enough. Our customers value us not only for our technical expertise, but also for the dedicated and customer-focused advice we provide. We listen. We answer questions and make recommendations. It is important to us that our customers have all the information they need so that they can make the right decisions and achieve the best possible results.

Contact us. We will be happy to advise you.

All products at your glance - our digital product brochure (PDF)

Discover our wide range of high quality lenses, optical filters and accessories in our interactive eBrochure. Find the detailed compilation of all standard products currently available from Schneider-Kreuznach.

Our product brochure gives you a comprehensive overview of our entire product range, including all technical information. Whether you are looking for specific products or want to compare different options, our eBrochure has it all in one place.

Click on the link below to download our product brochure.


Download brochure (PDF)

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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Jos. Schneider Optische Werke GmbH
Ringstraße 132
55543 Bad Kreuznach | Germany
+49 (0) 671 601 0



Business Unit Industry
+49 (0) 671 601 205

Business Unit Photo/ Cine
+49 (0) 671 601 551

B+W belongs to the Photo division



+1 800 645 7239 (East Coast)
+1 800 228 1254 (West Coast)

+86 755 8832 1170

+65 9488 0062

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