Bell Labs Invents Lensless Camera
The traditional method of imaging, which is at least 150 years old, relies on a lens to create an image and a device for recording photons such as an array of pixels, a light-sensitive film or even a retina.
But a dramatic revolution that is currently taking the world of imaging by storm means that this could soon change.
This revolution is based on a technique called compressive sensing, which is based on the idea that many common measurements have huge redundancy. That means it’s possible to acquire the same data with just a fraction of carefully chosen measurements.
The trick, of course, is knowing which measurements to take and how to reassemble them. Various teams have been excitedly experimenting with this idea. Back in January, for example, we looked at one group who have created 3D images using a single pixel in this way.