#science #space #telescope #lens #SAVI #Imaging
A few scientists have developed a camera that can capture detailed images of distant objects without using a long lens. The system is knows as SAVI (Synthetic Apertures for long-range, subdiffraction-limited Visible Imaging).
Like the technique used to achieve the ‘Matrix’ special effect, the images are taken from slightly different angles, but with one camera that is moved between shots instead of many fired in sequence. The prototype only works with coherent illumination sources such as lasers.
However, if you want an aperture as big as half a foot, you might need at least 30 glass surfaces to remove aberrations and create a focused spot. This will make the lens very big and bulky.
This is pretty neat. I wonder if this will be used in actual laboratories in the future.