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Showing 1 to 8 of 8 for “"Microlens array"”.
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Laser assisted nano-optics processing in optical data storage
… diffraction. Two optical lithography techniques, microlens array laser patterning and near-field scanning optical lithography, are presented to show their capabilities in nanostructures fabrication. Laser irradiation through microlens array is used to create nanostructures on phase-change films …
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Tunable Liquid Crystal Photonic Devices
… range from 0.6 m to infinity is achieved. Microlens array is an attractive device for optical communications and projection displays. In Chap. 5, we describe a LC microlens array whose focal length can be switched from positive to negative or vise versa by the applied voltage. The top …
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Theoretical and experimental assessment of the optical response of planar microlens arrays
… and response of a homogenous, apposition microlens array. While other similar studies of microlens arrays have been performed, none were found to determine the total field of view, overlap in the field of view nor the estimated maximum resolution when using a broadband illumination source …
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Photoacoustic Microscopy and Photoacoustic Computed Tomography Using High-frequency Linear Array Ultrasonic Transducers
… imaging depth in tissue by employing ultrasonic array detectors and inverse algorithms. This dissertation aims to improve the functionality of OR-PAM using a high-frequency linear ultrasonic array, and to advance the performance of linear-array PACT to full view angle capability and higher …
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High-Speed Photoacoustic Microscopy In Vivo
… a PAM system using a linear ultrasound array and a kHz-repetition-rate tunable laser. The system has achieved a 249-Hz B-scan rate and a 0.5-Hz 3D imaging rate: over ~6 mm ├ù 10 mm ├ù 3 mm), over 200 times faster than existing mechanical scanning PAM using a single ultrasonic transducer. …
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Advances in volumetric super-resolution microscopy and single-particle tracking
… (SMLFM) is a novel 3D-SMLM approach that uses a microlens array in the back focal plane of an optical microscope to capture fluorescence from multiple perspectives. Conceptually, SMLFM improves the density limit of SMLM through three key factors: 1. The PSF footprint resembles a simple and …
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High Capacity VCSEL Array Based Optical Wireless Links
… the research are as follows: A novel 5 × 5 VCSEL array based OWC transmitter is proposed and designed. A microlens array homogeniser is the first time employed in OWC to generate the uniform optical power distribution in each atto-cell and to minimise the interference between adjacent cells. Each …