Machine Vision Coaxial Lights
Use coaxial lighting for flat reflective targets where the camera needs light returning along the optical axis. It is useful for mirror-like planar parts, printed marks, fiducials, and surface features that appear with on-axis contrast.
Suitable uses
- Flat reflective metal or glass
- PCB fiducials and mark points
- Wafer and package surfaces
- Printed or engraved marks on planar parts
Likely to fail when
- The part is curved or uneven
- The defect needs dark-field shadow
- The field of view exceeds the optical aperture
Selection inputs
- Optical aperture size
- Camera field of view
- Working distance
- Surface flatness
- Wavelength and polarizer needs
Frequently asked questions
When is Machine Vision Coaxial Lights useful?
Use coaxial lighting for flat reflective targets where the camera needs light returning along the optical axis. It is useful for mirror-like planar parts, printed marks, fiducials, and surface features that appear with on-axis contrast.
What information is needed to select a light?
Start with Optical aperture size, Camera field of view, Working distance. Share target images and the inspection requirement so the arrangement can be checked on the actual application.