Aspheres: Finding the right tool: metrology for the manufacture of freeform optics
As featured in Laser Focus World: In the realm of precision optics, selecting the appropriate metrology tool is crucial for ensuring the quality and performance of freeform optics. Three advanced metrology tools are compared for their effectiveness in measuring these complex surfaces: the coordinate measurement machine, which provides precise three-dimensional measurements by physically probing the surface; a high-accuracy profilometer, known for its ability to deliver detailed surface profiles with exceptional precision; and a noncontact optical technique called fringe reflection reflectometry, which utilizes the reflection of light fringes to accurately map the surface without any physical contact, making it ideal for delicate or sensitive materials.
Each of these tools offers unique advantages and is suited to different aspects of freeform optics measurement, highlighting the importance of choosing the right tool for specific manufacturing needs.
COMMENTS