Plenoptic imaging systems with a microlens array imaging the pupil at the sensor typically produce low resolution images. We introduce an inverse problem solver using the system response to obtain high resolution image reconstructions. OCIS codes: (070.0070) Fourier optics and signal processing, (110.1758) Computational imaging, (100.1830) Deconvolution, (100.3010), Image reconstruction techniq...

An artificial compound eye imaging system fabricated by microoptics technology is adapted and attached to an optoelectronic sensor array. The thin objective consists of a microlens array on a silica-substrate with a pinhole array of different pitch in its focal plane on the backside. First captured images are presented, resolution and sensitivity are examined.

We discuss a modified femtosecond pulse shaper that uses microlens arrays to convert the continuous band of frequencies normally obtained in the mask plane of a pulse shaper into a series of discrete spots. Our experiments demonstrate that this modification can improve pulse-shaping quality when modulator arrays with large interpixel gaps are used for Fourier-plane filtering.

Certain new algorithms used by plenoptic cameras require focused microlens images. The range of applicability of these algorithms therefore depends on the depth of field of the relay system comprising the plenoptic camera. We analyze the relationships and tradeoffs between camera parameters and depth of field and characterize conditions for optimal refocusing, stereo, and 3D imaging.

Microlensing in Q2237+0305 between 1985 and 1995 (eg. Irwin et al. 1989; Corrigan et al 1991; Østensen et al. 1996) has been interpreted in two different ways. Firstly, the observed variations can be explained through microlensing by stellar mass objects of a continuum source with dimensions significantly smaller than the microlens Einstein radius (ηo), but consistent with that expected for the...