What is Narrow Bandpass Optical Filter and Why Do We Use Them?
Narrow Bandpass Filters | Schneider-Kreuznach
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
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
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
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.
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.
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.
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.
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
Are you interested in learning more about Narrow Bandpass Optical Filter? Contact us today to secure an expert consultation!
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.
Contact us. We will be happy to advise you.
What Is a Narrowband Filter Used for? - Shanghai Optics
Ever wondered how deep-sky astrophotographers create images of objects in space through their telescope? You guessed right – a narrowband filter is an answer! These filters are widely used in many applications, ranging from scientific research to industrial manufacturing. Our intuitive guide will explain in detail what narrowband filters are, their working principles, and the settings where they are common. Let’s begin!
What Is a Narrowband Filter?
Narrowband filters, as the name implies, are filters that only allow a narrow range of frequencies to pass through while blocking all other frequencies. This is a direct contrast to broadband filters, enabling a wide range of frequencies while blocking unwanted ones.
As mentioned before, there are common applications where the need to isolate specific spectral features and filter out unwanted light is required. These include scientific, industrial, and medical settings. In general, manufacturers ensure high precision and accuracy when making the narrowband filter. This is because they are often integrated with other optical components to achieve specific performance requirements.
What Are the Different Types of Narrowband Filters?
Interference filters: An interference filter, also known as a Fabry-Pérot filter, is a narrowband filter commonly used in optics and spectroscopy. It consists of multiple thin layers of dielectric material deposited onto a substrate, with alternating high and low refractive indices. This layer structure creates a series of reflections and interference effects, which allow the filter to selectively pass certain wavelengths of light while blocking others.
Bandpass filters: These filters allow a specific range of frequencies to pass through while blocking all other frequencies. You can find them in various applications, including telecommunications, medical equipment, and scientific instruments. An optical bandpass filter is typically constructed from a combination of inductors and capacitors and can be designed with different resonant circuits to achieve the desired performance characteristics. The term “optical” typically refers to the range of wavelengths visible to the human eye, ranging from approximately 400 to 700 nanometers. The choice of bandpass filter depends on factors such as the required center frequency, bandwidth, and level of attenuation needed.
Cavity filters: These filters play a significant role in microwave and RF applications. They are constructed from a resonant cavity, such as a metal enclosure or waveguide, which selectively passes frequencies within a narrow bandwidth.
Crystal filters: These filters use quartz or other crystals to pass certain frequencies within a narrow bandwidth. They are an important feature in radio communications and audio applications.
When Is a Narrowband Filter Used?
These filters particularly come in handy when the signal of interest is weak and needs to be separated from background noise or other unwanted light.
Astronomy
Astronomers count on narrowband filters when isolating specific emission lines of gases in celestial objects. This enables them to study the composition and structure of stars, galaxies, and other celestial bodies.
Remote Sensing
Another application where narrowband filtering is crucial is remote sensing. You can detect specific atmospheric or surface features using narrowband filters. Some examples include satellite imaging, lidar, and other sensing applications to measure environmental parameters such as temperature, humidity, and pollution.
Medical Imaging
In medical imaging, scientists use narrowband filters to isolate specific cellular or molecular features, particularly in fluorescence microscopy and Raman spectroscopy. This enables medical researchers and practitioners to study disease processes and diagnose medical conditions.
Telecommunications
Narrowband filters are used to filter out unwanted signals and noise from optical fiber networks. They are used in wavelength division multiplexing (WDM) and dense wavelength division multiplexing (DWDM) systems to transmit multiple signals over a single fiber.
Why Do Astronomers Use Narrowband Filters?
Narrowband imaging, which isolates particular emission lines of gases in astronomical objects, is one important use of narrowband filters in astronomy. Using narrowband filters, astronomers may isolate certain light wavelengths to analyze the spectral characteristics of celestial objects.
This method helps astronomers better comprehend the properties and operations of celestial objects.
In other words, they may learn more about how stars, galaxies, and other planetary systems develop and evolve by looking at the intensity and distribution of emission lines, which can show the temperature, density, and velocity of ionized gas in nebulas.
Conclusion
We hope this article has provided a better understanding of narrowband filters. As you can see, many industries utilize this innovative tool for various applications. Here is the interesting part – if you are looking for high-quality narrowband filters for your business, Shanghai Optics is the way to go! We specialize in producing and selling top-of-the-line narrowband filters that are perfect for many applications. Our filters provide superior performance, reliability, and durability, ensuring you get the best possible results every time.
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