Precision metrology for diffractive optics
Optical components such as Fresnel lenses and aspheres with diffractive surface structures pose unique challenges for metrology. Their complex geometries often cannot be accurately measured using conventional interferometric or tactile methods. This is where DIOPTIC excels: we design computer-generated holograms (CGHs) precisely tailored to these diffractive surfaces, enabling highly accurate form measurements even for the most complex structures.
Aspheres with diffractive structures are used across a broad spectrum of high-tech applications, from advanced imaging and microscopy to laser beam shaping and space optics. Their key advantage lies in combining a compact form factor with high optical functionality. In miniaturized systems, or in wavelength ranges where conventional optical elements reach their limits, diffractive components often provide the optimal solution. Although advanced manufacturing techniques have made fabrication highly controlled, precise form testing remains a significant challenge. July, 2025
