Diffraction Gratings TRIZ Cases
- Three-Group Optical System with Moving Focus Group for Aberration Correction
This three-group optical system uses a moving second lens group and controlled parameters to correct astigmatism and coma during focusing.
- Diffractive-Refractive Camera Lens for Thin Device Imaging
A refractive index compensation layer helps a compact camera lens cancel chromatic aberration without extra correction lenses.