Holographic Lens Array for Solar Collector with Large Angle and Expanded Spectral Width
Applied SciencesHolographic optical elements (HOEs) are promising for solar energy collection due to their advantages of lightweight and high efficiency, but the narrow reconstruction of their angular and spectral widths limits their application.
Changyu Wang, Yuan Xu, Hong Xu, Juan Liu
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Photopolymer materials for volume phase holographic optical elements [PDF]
, 2017 Enrico Orselli +3 more
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A new low-cost, compact, auto-phoropter for refractive assessment in developing countries
Scientific Reports, 2017 Using a phoropter to measure the refractive error is one of the most commonly used methods by ophthalmologists and optometrists. Here, we demonstrate design and fabrication of a portable automatic phoropter with no need for patient’s feedback. The system
Babak Amirsolaimani +4 more
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Stimulus-responsive colloidal sensors with fast holographic readout
, 2015 Colloidal spheres synthesized from polymer gels swell by absorbing molecules from solution. The resulting change in size can be monitored with nanometer precision using holographic video microscopy. When the absorbate is chemically similar to the polymer
Grier, David G. +2 more
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Holographic optical system to copy holographic optical elements
, 1991 A holographic system formed by two holographic lenses that, when working with white light, allow selection of a particular wavelength is presented. If adequate spatial and temporal coherence conditions are obtained, it is possible to copy holographic optical elements (HOEs) with partially coherent light by using optical systems formed by holographic ...
Pascual Villalobos, Inmaculada +2 more
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HOLOGRAPHIC OPTICAL ELEMENTS FOR BEAUTIFICATION
International Journal of Research in Engineering and Technology, 2013 In this research, holographic optical element appli ed for beautification recorded in holographic surfa ce relief photoresist. Various symmetric periodic structure with high diff raction efficiency in photosensitive material depen ds on various recording geometry parameters are explained.
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Encoding terahertz holographic bits with a computer-generated 3D-printed phase plate
Scientific ReportsA sub-terahertz holographic image of a two-dimensional 576-bit data code is produced using a diffractive phase-plate element. The phase plate was designed using a modified Gerchberg-Saxton iterative algorithm to encode a focused image of the data code ...
E. Constable, J. Gospodaric, A. Pimenov
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Determining Two-Sided Surface Profiles of Micro-Optical Elements Using a Dual-Wavelength Digital Holographic Microscope With Liquids [PDF]
, 2014 Hong Seok Lee +3 more
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Optical processing for landmark identification [PDF]
A study of optical pattern recognition techniques, available components and airborne optical systems for use in landmark identification was conducted.
Casasent, D., Luu, T. K.
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Design of optical system for fiber optic spectrometer based on holographic optical elements [PDF]
, 2015 Liping Jiang +2 more
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