Chroma Optical Filters for Machine Vision Applications
In machine vision, achieving superior image clarity and accurate color reproduction is essential. Chroma Technology’s optical filters are designed to elevate your system’s performance by enhancing image quality and ensuring precise color fidelity and contrast. Experience clearer images, even in challenging lighting or environmental conditions for accurate analysis.
In the rapidly evolving field of machine vision, precision and reliability are paramount
Chroma Technology is at the forefront of this machine vision revolution, providing cutting-edge optical filters that are essential for today’s automated systems in manufacturing, robotics, and quality control.
Chroma’s filters play a crucial role in enhancing image clarity, color accuracy, and contrast in the machine vision applications where every detail matters.
The team, leveraging decades of experience in optical engineering, collaborates closely with machine vision customers to provide free application and design support.
Chroma engineers ask the right questions and apply our extensive knowledge to deliver filters and optical solutions that are enabling the next generation of machine vision and automation.
Custom band-width and band placement
Chroma can address unique machine vision challenges with custom solutions.
Traditionally, machine vision systems have relied on bandpass filters with bandwidths of 60 nm or more, and generally centered over common LED wavelengths. Narrower bandwidths, for example, 20-40 nm wide, cut out the “tails” of the LED output spectrum, where there might also be background light, or noise.
For laser applications, an even narrower band (< 20 nm) can be used at the laser source to “clean up” the laser which might have noisy amplified spontaneous emission (ASE).
However, there are scenarios where even narrower bands are essential for optimal results, for example when dealing with the chemical composition of materials. In these cases, custom filters with extremely narrow bandwidths, < 10 nm down to 0.5 nm FWHM (full-width half-max), can isolate a spectral signature so an instrument can find “a needle in a haystack.” These narrow bandpass filters offer remarkable advantages in material analysis applications by precisely isolating a small sliver of spectral information, enhancing contrast, and improving accuracy.
Integrating narrow bandpass filters into machine vision systems for material analysis requires careful consideration of several factors, including the specific application requirements, lighting conditions, and the spectral characteristics of the materials. Customization and optimization play a vital role in achieving the desired performance and maximizing the benefits of these filters in material analysis tasks.
Laser light in the field
In the context of machine vision, it is not uncommon to encounter scenarios where laser light is present in the imaging field. For instance, when a laser profiler is utilized, it becomes crucial to block the laser light to prevent it from overwhelming the captured image. In such cases, it may be necessary to employ filters with a higher optical density to increase attenuation.
Interference filters with high optical density at the laser line over a wide range of angles can effectively block the laser light from contaminating the image, while maintaining excellent image quality. Interference filters are easily customizable, which enables you to selectively increase the blocking for specific laser wavelengths as needed, without compromising cost-effectiveness.
Using higher optical density filters with high angle tolerance efficiently blocks laser light, minimizing interference, and maximizing visibility and clarity of desired objects or features in the machine vision system. This enhances analysis accuracy and reliability, thus optimizing system performance. When dealing with laser light in machine vision applications, it is crucial to consider custom filter solutions. Leveraging interference filters effectively controls the laser light’s impact on the imaging field, ensuring accurate and reliable image analysis, while managing costs efficiently.
Multiband filters for when you have multiple light sources coming on sequentially
In systems with multiple LEDs, the implementation of multiband filters combined with strobing techniques can lead to cost savings by reducing the reliance on expensive cameras. This multispectral approach enables the use of a single camera without the need for a filter-wheel.
The ability to sort recycled materials utilizing these filters alongside multiple LED light sources that are sequentially turned on and off, can benefit various applications. For instance, this concept can be employed to assist in identifying glass, aluminum, and plastic for sorting and inspection of recycled materials.
The utilization of multiple bands provided by the multiband filter empowers the inspection system to gather additional information rapidly as the line moves swiftly. This wealth of information is instrumental in distinguishing between desirable and undesirable materials, detecting the presence or absence of certain substances, and even identifying the specific type of material or substance present.
Better image quality and more accurate color reproduction
In machine vision, where every detail matters, achieving superior image clarity and accurate color reproduction is essential. Chroma’s machine vision filters are designed to elevate your system’s performance by enhancing image quality and ensuring precise color fidelity and contrast.
Experience clearer images, even in challenging lighting or environmental conditions for accurate analysis. This accuracy is vital for reliable automated processes, helping your system to see and interpret the world with greater precision.
By focusing on these key aspects, Chroma’s optical filters not only improve the visual output of your machine vision systems, but also contribute to their overall efficiency and reliability. Chroma machine vision filters are engineered to deliver unparalleled image clarity for applications where precision and detail are of the utmost importance.
Easy integration
Chroma understands that compatibility and ease-of-use are as important as the technical excellence of the optical filters. To support ease-of-use, Chroma’s filters are designed to seamlessly integrate with a wide range of machine vision systems, from standard industry cameras to cutting-edge and custom-built hardware.
The wide range of standard sizes and the ability to customize to unique specifications simplifies the integration process, enhancing system efficiency and reducing setup times.
Durability in harsh environments
Chroma understands that durability means more than just surviving tough environments; it means maintaining peak performance over time.
Chroma filters are made to adhere to stringent industry environmental and durability standards, including ISO and MIL specifications for abrasion resistance, adhesion strength, and resilience against extreme temperatures, humidity, salt fog, and laser damage thresholds.
This long-lasting durability translates into cost savings and reliability for customers, ensuring that Chroma filters remain a dependable component in any machine vision system, regardless of the operational challenges.
Customized solutions
Understanding that every machine vision application is unique, Chroma offers customized solutions in addition to a catalog of machine vision filter offerings. Chroma optical filters are available for use from the UV to the IR, and they fit systems from all the major camera manufacturers.
But don’t worry! If you have a lesser used camera model, a custom-built system, or even if you’re lucky enough to have the latest and greatest in machine vision tech, Chroma can customize filters to most any size or shape required to integrate in your system.
Machine vision applications of Chroma’s optical filters
Chroma filters play a vital role across various machine vision applications, ensuring performance and reliability where it matters most. Chroma’s filters are integral to:
- Agricultural automation
- Environmental monitoring
- Food sorting
- Industrial automation
- Quality control and inspection systems
- Robotic guidance
- And many other advanced automation, inspection, and industrial applications
And these applications are just “the tip of the iceberg.” Chroma filters are integral to a wide range of advanced machine vision applications, each with its unique challenges and requirements.
Partnering for your success: Chroma engineering support
Understanding that every machine vision application is unique, Chroma’s experienced engineers work alongside you to offer customized solutions for even the most challenging applications.
Whether it’s optimizing costs, enhancing system performance, or sharing expert knowledge, Chroma ensures your machine vision system excels in every aspect.
Chroma’s focus is not just to provide answers, but to discover the right solutions for your specific needs. From the initial consultation to ongoing support, Chroma is dedicated to assisting you at every step, ensuring your Chroma filters deliver optimal system performance for years to come.
About Chroma Technology
Chroma Technology is a leading manufacturer and OEM supplier of high performance optical filters used in a wide range of applications, including health care, biomedical research, remote sensing, machine vision, and aerospace. Chroma offers an extensive selection of optical filter sets and filter accessories, as well as custom solutions tailored to customer-specific needs.
For more information or a quotation for this or other Chroma products, contact IL Photonics.