Hans Zappe's Tunable Micro-optics PDF
By Hans Zappe
Featuring cutting-edge learn into the dynamic box of tunable micro-optics, this is often the 1st booklet to supply a accomplished survey masking a diversified variety of subject matters together with novel fabrics, actuation innovations and new imaging platforms in optics. the world over well known researchers current a various diversity of chapters on state of the art fabrics, units and subsystems, together with delicate topic, synthetic muscular tissues, tunable lenses and apertures, photonic crystals, and whole tunable imagers. unique contributions additionally supply in-depth remedy of micro-optical characterisation, scanners, and using average eye versions as suggestion for brand spanking new recommendations in complex optics. With functions extending from scientific analysis to fibre telecommunications, Tunable Micro-optics equips readers with an outstanding knowing of the wider technical context via its interdisciplinary method of the realisation of recent varieties of optical platforms. this is often a necessary source for engineers in and academia, and complicated scholars engaged on optical platforms layout.
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Extra info for Tunable Micro-optics
2010). On the other hand, further refinement of the actuation approach can be used to realize microlenses with explicitly tunable aberrations (Liebetraut et al. 2013a). 14 Discrete radial actuation of deformable solid-body elastomer lenses can be used to controllably tune aberrations as well as focal length. (a) Schematic diagram showing asymmetric radial actuation: (A) all eight actuators at rest for an undeformed lens; (B) two actuators for astigmatism; (C) four actuators for tetrafoil; and (D) all actuators for defocus.
Compared with macroscopic optics, micro-optics is generally manufactured employing different technologies, using different materials, and often relying on entirely different optical effects (Zappe 2012). An upshot of these differences is that micro-optical components and systems may often display functionalities not possible with classical, macroscopic optics. One such functionality is intrinsic tunability, and it is tunable micro-optics that is the subject of this book. Whereas a macroscopic optical system is usually tuned by a mechanical displacement of components, in micro-optics tunability may often be realized by a controlled change in an intrinsic property of the component itself.
2009). Alternatively, a continuously deformable mirror made from CYTOP, a Teflon-like material sold by Asahi Glass, was used to variably couple light from an input to an output fiber, yielding −25 dB attenuation (Yeh et al. 2006). Finally, electromagnetically actuated micromechanical shutters fabricated by etching through a silicon wafer and mounting of the opaque etched flaps on torsion springs allows configuration of free-space optical systems, such as those used for two-dimensional imaging (Choi et al.
Tunable Micro-optics by Hans Zappe