The Role of Optical Filters in Machine Vision
What makes an optical filter effective in a machine vision system?
Two key performance factors are out-of-band blocking and transmission efficiency. These directly influence image clarity, contrast, and accuracy during automated inspection.
Chroma Technology’s filters are engineered to achieve steep slope transitions — from 90% to 1% transmission (or vice versa) within as little as one nanometer. This sharp cutoff helps ensure that only the intended wavelengths are detected. High in-band transmission, typically averaging over 95%, further enhances the signal-to-noise ratio for cleaner, more reliable imaging.
A recent article, entitled “Ask the Expert: Machine Vision Optical Filters for Enhanced Automation Processes,” appears in Vision Systems Design. In this article, John Atkinson, Principal Product Engineer at Chroma, explains how precise optical filter specifications play a central role in minimizing errors and improving throughput for machine vision applications.
Read the full article to learn how filter design directly impacts performance in real-world imaging applications.
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.