Tips for Customizing Coaxial Light Sources
Coaxial light sources are designed to provide uniform illumination along the same axis as the camera lens, reducing shadows and reflections. This type of light source is often used with telecentric lenses, which correct for parallax and maintain a consistent field of view. Due to their optical structure, coaxial light sources can face challenges with light intensity and uniformity. Here's a guide to some key tips for customizing coaxial light sources:
1. Increase the Light Emission Area
Coaxial light sources tend to lose brightness due to the internal structure that uses a half-mirror to filter light. To compensate for this loss, consider increasing the light emission area. A larger area can help maintain light uniformity and improve the overall illumination.
2. Maintain a Shorter Distance from the Object
The further away the coaxial light source is from the object, the greater the loss of light intensity. To ensure optimal performance, keep the distance between the light source and the object as short as possible. This approach helps maintain sufficient brightness and reduces the need for additional light compensation.
3. Use Parallel Coaxial Light Sources for Scratch Detection
If you're specifically targeting scratch detection, consider using a specialized parallel coaxial light source. This type of light source is designed to maintain parallel light paths, reducing reflections and enhancing the detection of fine surface imperfections like scratches.
Conclusion
Coaxial light sources offer unique benefits for machine vision applications, especially when used with telecentric lenses. However, they also present challenges with light intensity and uniformity due to their optical structure. To address these challenges, consider increasing the light emission area, maintaining a shorter distance from the object, and using parallel coaxial light sources for specific applications like scratch detection.
When customizing coaxial light sources, keep these tips in mind to ensure the best performance and accurate results in your machine vision applications. If you're uncertain about the best approach, companies like FALenses Technology can offer guidance and support for customizing coaxial light sources to meet your specific needs.
FALenses Technology specializes in providing machine vision core hardware. You can go to the official website of FALenses Technology at https://www.falenses.com/ for more information.