Key features of the Color Filters
- Insensitive to angle of incidence
- Large CA, absence of vignetting
- Improve Contrast
- Isolate Colors
Color Filters
Absorb unwanted wavelengths
Color filters for the industry
Schneider-Kreuznach color filters are absorptive filter that are used to increase contrast of a monochrome image, by isolating spectral regions and lighting colors. IR filters are absorptive filters, too. They are used in front of a NIR sensor or an image sensor for NIR imaging where IR spectrum only is needed.
What is the function of a color filter?
A color filter selectively transmits or reflects light of a specific color or range of colors while blocking or absorbing other colors. The filter is designed to have high spectral selectivity, which allows it to transmit or reflect only a narrow spectral band of light.
Where is a color filter used?
In industrial applications, color filters are used in a wide range of applications, including machine vision, imaging, and optical sensing. They can be used to adjust the color balance of an image, enhance contrast, or separate different colors in a complex light source.
Status
Order Name
cut-on Wavelength [nm]
Color
Filter Series
Filter mounted
Thread size
Thread size
Filter glass unmounted
Diameter
Diameter
Color
Transmission data
Applications & Markets of Color Filters
Spectroscopy
In spectroscopy, spectral lines are analysed by selectively blocking or transmitting certain wavelengths using bandpass filters.
Traffic and surveillance
Traffic and surveillance systems use cameras and image processing to monitor and manage traffic flow and public safety.
Bioanalytics and Medical
Bioanalytical and medical applications isolate wavelengths with bandpass filters to detect biomolecules and cellular structures.
Mounts for color filters
C-Mount
Defined by 1” (25.4mm) diameter and 32 turns per inch pitch, C-Mount thread is a popular camera mount in machine vision industry. Schneider-Kreuznach offers for most filters a CMT mount option. So that filters can go in any C-Mount based mechanics in vision systems.
Another popular application, CMT mounts can easyly 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:
• Fits in C-Mount cameras
• Black Anodized Brass
Applications:
• 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 |
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:
• 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 | 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 |
SN1-Mount
SN1-Mount was designed for in machine vision industry 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:
• Maximum 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 30.5x0.5 | 32 mm | 28 mm | 6.5 mm |
Product Highlights
Color filter - LP 825 HT
The Schneider Kreuznach absorption filter LP 825 blocks all wavelengths below 825 nm and blocks visible light. It allows all wavelengths between 825 nm and 2000 nm to pass. The NIR (near infrared, wavelength ca. 900 nm to 1200 nm) with an average of over 95 %. The filter transmits the SWIR range above this between 1200 nm and 2000 nm with values between 70 % and 80 %.
Environmental Facts of the color filters
Our industrial optical color filters are tested to DIN standards to ensure they meet stringent environmental requirements. These tests check the durability of the color filters, their resistance to temperature changes and their ability to withstand exposure to harsh chemicals and other environmental stressors. This ensures that the color 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
Download our Product Brochure (PDF)
The interactive eBrochure includes all standard Industrial Lenses and Industrial Optical Filters currently available from Schneider-Kreuznach.
Find all the important information about our products in one place. Search, compare and find the right solution for your needs. DOWNLOAD
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.
HEADQUARTERS - Europe
Jos. Schneider Optische Werke GmbH
Ringstraße 132
55543 Bad Kreuznach
+49 (0) 671 601 0
cs@schneiderkreuznach.com
BUSINESS UNITS
Business Unit Industry
+49 (0) 671 601 205
isales@schneiderkreuznach.com
Business Unit Photo/ Cine
+49 (0) 671 601 551
B+W belongs to the Photo division
photo@schneiderkreuznach.com
cine@schneiderkreuznach.com
OFFICES WORLDWIDE
America
+1 800 645 7239 (East Coast)
+1 800 228 1254 (West Coast)
info@schneideroptics.com
Asia
+86 755 8832 1170
info@schneider-asiapacific.com
Singapore
+65 9488 0062
cheangv@schneiderkreuznach.com
Exhibitions & Events
Visit us at any tradeshow or event we attend worldwide! Come with your challenge and let our experts help you find the perfect solution for your apllication.