• Corpus ID: 204744034

Diffractive flat lens enables Extreme Depth-of-focus Imaging

  title={Diffractive flat lens enables Extreme Depth-of-focus Imaging},
  author={Sourangsu Banerji and Monjurul Meem and Apratim Majumder and Berardi Sensale‐Rodriguez and Rajesh Menon},
  journal={arXiv: Optics},
A lens performs an approximately one-to-one mapping from the object to the image planes. This mapping in the image plane is maintained within a depth of field (or referred to as depth of focus, if the object is at infinity). This necessitates refocusing of the lens when the images are separated by distances larger than the depth of field. Such refocusing mechanisms can increase the cost, complexity and weight of imaging systems. Here, we show that by judicious design of a multi-level… 
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