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.
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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
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 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
Ever since the foundation in 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.
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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.
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.
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Optics
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.
Mechanics
For more information, please visit Narrow Bandpass Filter supplier.
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.
Assembly
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 certified processes, metrology rooms and procedures ensure consistent and reliable production to meet our customers' high expectations.
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.
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Hi Vik,
Would you please share your schematic and possibly the FilterPRO design file so we can take a look at what you built? Be sure to include the actual OPA part number you've used.
My guess is that the "Q" of the filter you've designed is probably very high to get such a tight passband and high gain in one design, which means that it may not be possible due to component parasitic parameters and tolerances to get this design to work without the risk of oscillations. We may have to divide your gain and filtering into separate stages to make the design more robust.
Let's take a look at your circuit and we can work from there.
Regards,
Collin Wells
Precision Linear Applications
Hi Vik,
Thanks for the schematic and for confirming that the Q is very high. I generally use a rule that filters with a Q greater than 10 are usually too sensitive to component tolerance and parasitics to be robust. Lowering the required filter gain requirements, increasing the passband bandwidth, or increasing the number of stages all help to lower the filter Q requirements.
OPA is primarily a chopper stabilized zero-drift amplifier and is usually used for DC applications. Your application bandwidth is low so the OPA should work but if you're interested in a product with lower THD+N or other AC specifications you should possibly consider another single-supply amplifier such as the OPA320 or OPA365.
For your new design, seven stages and 14 orders are pretty impressive and I haven't personally constructed anything so advanced before and would be very interested in your results. The lower Q is much more appropriate and should be much less likely to oscillate. If you share the new design I will spend a little time and do a SPICE analysis on both circuits and let you know what I find.
May I also ask what your final application is that requires such a heavy analog filter? Would it be possible to move some of the filtering to the digital domain where it is easier to achieve higher order filters practically?
Regards,
Collin Wells
Precision Linear Applications
Hello Collin,
Thank you for your input. I am going to try the new design with OPA first since I have them laying around here. I am using TINA TI to simulate the design. I am going to try to do that on the new design here shortly and I will post the schematic.
My application is a 22Hz receiver. My major problem is the fact that I need atleast a 100dB gain and I am quite close to energy potent 50/60Hz and low frequency electro-magnetic fields and discharges. The environment the application would be used is typically in remote industrial locations. Hence, power efficiency and battery operation is critical as well. I am still considering a FIR filter and prefer my solution to be digital. However, I felt like it's just as much of a hassle to add a 16 bit ADC, processor and filter cores and low noise boost regulators and reference. If you've any recommendations, I would like to try it out.
Thanks again,
Vik
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