Engineers produce a fisheye lens that’s completely flat

Prof. JJ Hu and colleagues have published research on a new lens design and experimental demonstration which transforms a single flat piece of glass into a fisheye lens – a type of lens that can capture panoramic 180-degree field-of-view images. Conventional fisheye lenses are assembled from 5 to 10 individual lenses and are bulky, complicated, and expensive. Hu’s design instead uses only a single piece of flat transparent glass, with an optical aperture on one side and decorated with an array of sub-wavelength-scale structures on the other side. They show that the design enables aberration-free imaging across the entire front hemisphere, which is the first time that a flat lens can achieve such ‘fisheye’ performance. Working with industrial partners, the team is exploring applications of the technology in 3-D sensing, medical imaging, AR/VR, and defense applications. 

Outside References

Related Faculty

News Categories

Research Disciplines