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AUF
Polarizer Filter


Key features

  • Reduce reflections, increase contrast
  • High extinction ratio
  • Pre-cut custom shapes for polarizing films on request
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Schneider-Kreuznach Polarizer Filter AUF

Schneider-Kreuznach polarizers are engineered for industrial needs, providing robust performance with high extinction ratios to reduce reflections and enhance contrast. Available as glass or film-based solutions, they integrate seamlessly into machine vision, traffic surveillance, and other demanding applications. With multiple mount options and custom sizes, these polarizers ensure precise imaging and reliable results.

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 consists 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.

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Datasheet
Transmission
Product sheet
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Product brochure 2024
Product brochure 2025

Technical specifications: AUF Polarizer Filter

TypeStandard
Extinction ratio>10,000:1
Wavelength range420 nm - 750 nm
Transmittance(Tp + Ts)/2>=34%
Wavefront distortion19-30 mm: 13/1 (0.40) | 31-50 mm: 13/1 (0.50) | 50-64 mm: 13/1 (0.60)
Coatinguncoated
Temperature range-20°C - +50°C
Glass thickness2.7 +/- 0.25mm

Filter specifications glossary

 

Specification Description
Angle of incidence (AOI) Angle between a ray of light and the surface normal to the surface it strikes
Cut-on wavelength Wavelength at which the transmission of the lower edge rises to 50%
Cut-off wavelength Wavelength at which the transmission of hhe upper edge drops to 50%
Central Wavelength (CWL) Center of the filter’s passband for which it is primarily designed
Full Width at Half Maximum (FWHM) Spectral bandwidth measured at 50% of the peak transmittance
Transmittance Ratio of transmitted light intensity to incident light intensity
Blocking Strong attenuation of light intensity over a specified wavelength range
Wavefront distortion Deviation of the transmitted wavefront from a reference plane
Parallelism Angular deviation between the two main surfaces of the filter
Glass thickness tolerance Permissible deviation from the specified substrate thickness
Wavelength range Spectral region over which the filter is designed to operate
Coating Applied layer(s) defining the filter’s spectral characteristics
Temperature range Recommended operational limits for ambient or device temperature
Glass thickness Nominal thickness of the filter glass
Optical density Attenuation measure defined as −log₁₀ of transmittance
Transmittance average Average light transmission across the specified wavelength range
Wavelength Wavelength range at which the polarizer specification applies
Transmittance, unpolarized light Ratio of transmitted to incident intensity for unpolarized light
Extinction ratio Ratio of transmitted intensity along the polarizer’s pass axis to that along its block axis
Max. size Largest standard dimension for the polarizer film
Temperature range Minimum to maximum temperature for reliable performance
Substrate Base material on which the polarizing film is applied
Thickness Nominal overall thickness of the polarizer film
Info Unless otherwise stated, all dimensions in this data sheet are in mm

 

Picture of the filter

Schneider-Kreuznach Polarizer Filter AUF



Transmission of the AUF Polarizer Filter

 

Transmission Data

 

Download Excel

 

Wavelength (nm) Transmission (%)  I  AUF II Transmission (%)  I  AUF +
380 57.214813 1.67308
390 60.344792 2.386825
400 62.457706 2.583653
410 63.032223 2.195398
420 63.320346 1.559525
430 63.589444 0.970019
440 63.365832 0.550211
450 63.076295 0.298704
460 62.894676 0.163793
470 62.762081 0.094713
480 62.867843 0.058837
490 63.03705 0.037466
500 63.212326 0.02377
510 63.317814 0.014983
520 63.382645 0.008824
530 63.346437 0.004618
540 63.089448 0.002361
550 62.789759 0.001207
560 62.5652 0.00086
570 62.278086 0.000615
580 62.04339 0.000706
590 61.778437 0.000595
600 61.481439 0.000499
610 61.14373 0.000451
620 60.832919 0.000618
630 60.616004 0.000413
640 60.510444 0.000526
650 60.475485 0.000581
660 60.646189 0.000533
670 60.981904 0.000543
680 61.580706 0.000641
690 62.312046 0.000505
700 63.118456 0.000613
710 64.081607 0.000508
720 65.278437 0.000646
730 66.412418 0.000628
740 67.600313 0.000954
750 68.900918 0.00189
760 70.073417 0.005596
770 71.363806 0.018463
780 72.484195 0.059885

 

 

Mounted Filter [IF] -
rotatable and fixable

MountThicknessID
SN2 25.52,7 mm1010313
SN2 27.02,7 mm1010314
SN2 30.52,7 mm1011655
SN2 34.02,7 mm1085592
SN2 35.52,7 mm1054941
SN2 37.02,7 mm1054942
SN2 40.52,7 mm1019304
SN2 43.02,7 mm1054943
SN2 46.02,7 mm1054944
SN2 49.02,7 mm1054945

Order nomenclature
IF AUF [Mount] [Thickness]
Example: IF AUF SN2 25.5 2.7
 

Mounted Filter [IF] -
rotatable

MountThicknessID
DH 25.52,7 mm1006543
DH 27.02,7 mm1003225
DH 30.52,7 mm1006544
DH 35.52,7 mm1006980
DH 37.02,7 mm1006545
DH 40.52,7 mm1003336
DH 43.02,7 mm1008985
DH 46.02,7 mm1007691
DH 49.02,7 mm1003337
DH 52.02,7 mm1007671
DH 55.02,7 mm1080151
DH 58.02,7 mm1009114
DH 62.02,7 mm1078763
DH 67.02,7 mm1003338

Order nomenclature
IF AUF [Mount] [Thickness]
Example: IF AUF DH 25.5 2.7
 

Unmounted Filterglass [IFG]

DiameterThicknessID
23.0 mm2,7 mmID to be defined
24.0 mm2,7 mmID to be defined
29.0 mm2,7 mm1089780
33.0 mm2,7 mm1089781
34.0 mm2,7 mm1086470

Order nomenclature
IFG AUF [Diameter] [Thickness]
Example: IFG AUF 23.0 2.7
 

Mounts for Industrial Optical Filters

C-Mount

Defined by 1” (25.4mm) diameter and 32 turns per inch pitch, the C-Mount thread is a popular camera mount in machine vision industry. Schneider-Kreuznach offers a C-Mount option for most filters. So filters can go in any C-Mount based mechanics in vision systems.

Another popular application, C-Mounts can easily be used for, is placing a filter in front of the sensor into the camera. The extension of the back flange distance has to be considered for imaging applications.

Key Features of C-Mount Filters:
• Fits in C-Mount cameras
• Black Anodized Brass

Applications of C-Mount Filters:
• To be mounted in C-Mount cameras
• Vision Systems based on C-Mount mechanics

Thread Diameter Clear Thickness
Aperture
1'' - 32 25.4 mm 21.1 mm 3.6 mm

 

Filter C-Mount

 

 

SH-Mount

Schneider-Kreuznach offers a variety of mounts with common thread sizes to fit on most camera lens systems. SH-Mount is the standard, when high flexibility is needed. Filters are held by retainer rings. SH-Mounts are extreme robust.

All SH-Mounts have a female and male M-thread, and can be stacked if several filters must be combined.

Key features of SH-Mount Filters:
• Stackable
• ​​​​​Robust
• Black Anodized Brass

Applications of SH-Mount Filters:
• Mounted on lenses in imaging applications
• Mounted on measurement instruments

Thread Diameter Clear Thickness
Aperture
M 25.5x0.5 29.5 mm 20.8mm 6.4 mm
M 27.0x0.5 31.0 mm 21.8 mm 6.4 mm
M 35.5x0.5 39.5 mm 29.8 mm 6.4 mm
M 37.0x0.75 41.0 mm 31.8 mm 6.9 mm
M 39.0x0.5 43.0 mm 33.8 mm 6.4 mm
M 40.5x0.5 44.5 mm 35.8 mm 6.4 mm
M 43.0x0.75 47.0 mm 37.8 mm 6.9 mm
M 46.0x0.75 50.0 mm 40.8 mm 6.9 mm
M 49.0x0.75 53.0 mm 43.8 mm 6.9 mm
M 52.0x0.75 56.0 mm 46.8 mm 6.9 mm
M 55.0x0.75 59.0 mm 49.8 mm 6.9 mm
M 58.0x0.75 62.0 mm 52.8 mm 6.9 mm
M 62.0x0.75 66.0 mm 56.8 mm 6.9 mm
M 67.0x0.75 71.0 mm 61.8 mm 6.9 mm

 

SH Filter-Mount

 

SN1-Mount

The SN1-Mount was designed for the in machine vision popular M30.5x0.5 thread. With its high clear aperture, vignetting can be avoided, even for wide angle applications. The filter is glued into the mount, in order to secure it against vibrations when integrated into robots or production lines. It is ideal to be used in automated fabrication.

SN1-Mounts have a male and female M-thread, and can be stacked if several filters must be combined.

Key features SN1-Mount Filters:
• Maximum Clear Aperture
• No vignetting
• Stackable
• Robust
• Black Anodized Brass

Applications SN1-Mount Filters:
• Mounted on lenses in imaging applications
• Mounted on measurement instruments

Thread Diameter Clear Thickness
Aperture
M 30.5x0.5 32 mm 28 mm 6.5 mm

 

SN1 Filter-Mount

 

SN1-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 for use 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

 

SN2 Filter-Mount

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

 

DH Filter-Mount



 

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

 

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isales@schneiderkreuznach.com

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cine@schneiderkreuznach.com

 

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