The optical property of a system that transmits or focuses light without separating it into constituent colors. It implies that the focal length remains constant across a specified spectral range. Achieving achromatism is essential for imaging systems and multi-wavelength laser setups to maintain sharp focus and spatial overlap.
Heard on the job
The optical design software optimizes for achromatism across the entire visible spectrum.
Also heard as
- achromaticity
Do not mix it up with
- Apochromatism: Achromatism implies correction for two wavelengths, whereas apochromatism implies correction for three.