Download Field guide to digital micro-optics by Bernard C. Kress PDF
By Bernard C. Kress
Conventional macro-optics will be designed with out complicated layout software program instruments. even if, electronic optics, specifically wafer-scale micro-optics, require particular software program and instruments. there's usually no analytical resolution, and therefore advanced iterative optimization algorithms should be required. This e-book covers refractive and diffractive micro-optics, the iterative optimization approach, and modeling and fabrication suggestions an important to this box. the power to create hybrid structures in a position to generating analog and electronic performance can also be addressed
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Using such images, the displacement of image parts that are not in focus can be analyzed, and depth information can be extracted. This camera system can potentially be used to virtually refocus an image on a computer after the picture has been taken. The drawback of such a system is a lower resolution. Lumsdaine and Georgiev described a new design of a plenoptic camera, called a focused plenoptic camera, where the MLA is positioned before or behind the focal plane of the main lens. This modification samples the light field in a different way that allows for a higher spatial resolution at the expense of a lower angular resolution.
Field Guide to Digital Micro-Optics Refractive Micro-Optics 17 Light-Field Displays Similar to light-field cameras, light-field displays can be implemented in large-scale projectors for numerous viewers to single-user personal displays, such as headmounted displays (HMDs). In light-field displays, multiple fields from various angles are projected on the same exit pupil, thus forming an eye box of light fields. Light-field displays are usually assimilated into auto-stereoscopic 3D displays, but their 3D functionality is far superior to those of conventional stereo displays.
The following figure shows a same phase profile from which can be derived either a narrow-band diffractive lens (left, shallow fringes with a phase shift of 2p[0]) or a multiorder, broadband diffractive lens (right, deeper fringes with a phase shift of 2p[n2p]). The structures are deeper and wider. Refractive phase profile r01 R01 d0 D0 Conventional DOE D0 = N · d 0 N · r 01 01 {R Harmonic DOE When the design wavelengths are close to each other, the optimal depth may become too deep for fabrication, especially when the lens already has small periods (a fast lens).