Optical dispersion is an inherent property of all materials in nature. Due to the dispersion of the optical material and the phase accumulation of the light field at different wavelengths, chromatic aberration is inev...Optical dispersion is an inherent property of all materials in nature. Due to the dispersion of the optical material and the phase accumulation of the light field at different wavelengths, chromatic aberration is inevitable in commercial optical lens. When taking pictures by lenses with severe chromatic aberration, the images will look blurred or noticeably colored edges (red, green, blue) around the objects, especially in high-contrast situations. Thus, achromatism, correction of the chromatic aberration, is extremely important in broadband optical applications. There are mainly two approaches in the correction of the chromatic aberration in existing optical systems: combining the refractive lenses with different dispersions or introducing the diffractive optical elements. However, it is still a technical challenge to achieve that goal in the entire visible light band.展开更多
基金support from the National Key Research and Development Program of China(NKRDP)(2018YFA0306200 and 2017YFA0303702)the National Natural Science Foundation of China(NNSFC)(11625418 and 51732006)
文摘Optical dispersion is an inherent property of all materials in nature. Due to the dispersion of the optical material and the phase accumulation of the light field at different wavelengths, chromatic aberration is inevitable in commercial optical lens. When taking pictures by lenses with severe chromatic aberration, the images will look blurred or noticeably colored edges (red, green, blue) around the objects, especially in high-contrast situations. Thus, achromatism, correction of the chromatic aberration, is extremely important in broadband optical applications. There are mainly two approaches in the correction of the chromatic aberration in existing optical systems: combining the refractive lenses with different dispersions or introducing the diffractive optical elements. However, it is still a technical challenge to achieve that goal in the entire visible light band.
