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Books > Professional & Technical > Energy technology & engineering > Electrical engineering
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Microlenses - Properties, Fabrication and Liquid Lenses (Paperback)
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Microlenses - Properties, Fabrication and Liquid Lenses (Paperback)
Series: Series in Optics and Optoelectronics
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Due to the development of microscale fabrication methods,
microlenses are being used more and more in many unique
applications, such as artificial implementations of compound eyes,
optical communications, and labs-on-chips. Liquid microlenses, in
particular, represent an important and growing research area yet
there are no books devoted to this topic that summarize the
research to date. Rectifying this deficiency, Microlenses:
Properties, Fabrication and Liquid Lenses examines the recent
progress in the emerging field of liquid-based microlenses. After
describing how certain problems in optics can be solved by liquid
microlenses, the book introduces the physics and fabrication
methods involved in microlenses. It also details the facility and
equipment requirements for general fabrication methods. The authors
then present examples of various microlenses with non-tunable and
tunable focal lengths based on different mechanisms, including:
Non-tunable microlenses: Ge/SiO2 core/shell nanolenses, glass
lenses made by isotropic etching, self-assembled lenses and lens
arrays, lenses fabricated by direct photo-induced polymerization,
lenses formed by thermally reflowing photoresist, lenses formed
from inkjet printing, arrays fabricated through molding processes,
and injection-molded plastic lenses Electrically tuned microlenses:
liquid crystal-based lenses and liquid lenses driven by
electrostatic forces, dielectrophoretic forces, electrowetting, and
electrochemical reactions Mechanically tunable microlenses:
thin-membrane lenses with varying apertures, pressures, and surface
shapes; swellable hydrogel lenses; liquid-liquid interface lenses
actuated by environmentally stimuli-responsive hydrogels; and
oscillating lens arrays driven by sound waves Horizontal
microlenses: two-dimensional polymer lenses, tunable and movable
liquid droplets as lenses, hydrodynamically tuned cylindrical
lenses, liquid core and liquid cladding lenses, air-liquid
interface lenses, and tunable liquid gradient refractive index
lenses The book concludes by summarizing the importance of
microlenses, shedding light on future microlens work, and exploring
related challenges, such as the packaging of systems, effects of
gravity, evaporation of liquids, aberrations, and integration with
other optical components.
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