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Pinhole-array-based hand-held light field cameras can be used to capture 4-dimensional light field data for different applications such as digital refocusing and depth estimation. Our previous experiences suggest the design of the pinhole array mask is very critical to the performance of the camera, and the selection of mask parameters could be very different between applications. In this paper, we...
We demonstrate a GaN-based microcavity light emitter (MCLE) with an AlN current blocking layer. An AlN layer is inserted on the InGaN/GaN multiple quantum wells as a current blocking layer and an optical confinement layer.
In this paper, a computational photography system is utilized to sample 4D light fields. The system is implemented using a normal DSLR camera with a mask printed using Kodak LVT technique. We reconfigure the camera by inserting a pinhole array mask in front of the sensors. The mask blocks part of light and samples the rest that passes through the pinholes. With these 4D light field data, the refocused...
Recent progress on fabrication technology and demonstration of current injection GaN-based blue VCSELs are presented. Performance of current injection blue VCSELs with threshold current of 1.4 mA and emission wavelength of 462 nm are described.
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