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| The OPA chip placed on a penny for scale. |
Caltech Presents OPA Camera
Caltech Professor Ali Hajimiri with graduate students present Optical Phase Array (OPA)-based camera: "What the camera does is similar to looking through a thin straw and scanning it across the field of view. We can form an image at an incredibly fast speed by manipulating the light instead of moving a mechanical object." Their OSA paper "An 8x8 Heterodyne Lens-less OPA Camera" explains the principle:
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