Results 11 to 20 of about 3,002 (158)
Recent advances in lensless imaging [PDF]
Optica, 2021 Lensless imaging provides opportunities to design imaging systems free from the constraints imposed by traditional camera architectures. Due to advances in imaging hardware, fabrication techniques, and new algorithms, researchers have recently developed lensless imaging systems that are extremely compact and lightweight or able to image higher ...
Vivek Boominathan +3 more
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A Compact Raster Lensless Microscope Based on a Microdisplay [PDF]
Sensors, 2021 Lensless microscopy requires the simplest possible configuration, as it uses only a light source, the sample and an image sensor. The smallest practical microscope is demonstrated here.
Anna Vilà +3 more
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Optimization of Lensless Imaging Using Ray Tracing
Applied SciencesLensless microscopy is a well-established imaging approach that replaces traditional lenses with phase modulators, enabling compact, low-cost, and computationally driven analysis of biological samples.
Samira Arabpou, Simon Thibault
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Learned lensless 3D camera [PDF]
Optics Express, 2022 Single-shot three-dimensional (3D) imaging with compact device footprint, high imaging quality, and fast processing speed is challenging in computational imaging. Mask-based lensless imagers, which replace the bulky optics with customized thin optical masks, are portable and lightweight, and can recover 3D object from a snap-shot image.
Feng Tian, Weijian Yang
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Lensless ultrafast optical imaging
Light: Science & Applications, 2022 Lensless single-shot ultrafast optical imaging is realized by integrating an acousto-optic programmable dispersive filter with spectrally filtered sequentially time all-optical mapping photography, which enables independent control of frame rate, frame ...
Jian Zhao, Mingsheng Li
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Lensless acousto-optical convolver
Electronics Letters, 1978 A lensless acousto-optical convolver has been realised with surface acoustic waves, which relies on a technique of polarisation discrimination detection of the diffracted light. A polariser may, then, filter the light signal directly in the Fresnel field, thus allowing realisation of a strictly compact device that retains properties of easy adjustment ...
Alippi A +4 more
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Metasurface Enhanced Lensless Endoscopy [PDF]
EPJ Web of ConferencesWe integrate a metasurface with a multicore fiber in a lensless two-photon endoscope. The fiber’s transmission matrix is measured using an SLM, and its phase corrections are transferred to the metasurface to enable beam focusing.
Loucif Amir +4 more
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Lensless magneto-optical imaging
Scientific ReportsMagneto-optical methods, which utilize the interaction of polarized light with the magnetization of the sample in reflection through the magneto-optical Kerr effect or in transmission through the accordant Faraday effect, present prominent and widespread
V. Neu +4 more
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Real-time, deep-learning aided lensless microscope [PDF]
, 2023 Traditional miniaturized fluorescence microscopes are critical tools for modern biology. Invariably, they struggle to simultaneously image with a high spatial resolution and a large field of view (FOV).
Vivek Boominathan +8 more
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Lensless imaging by compressive sensing [PDF]
2013 IEEE International Conference on Image Processing, 2013 In this paper, we propose a lensless compressive imaging architecture. The architecture consists of two components, an aperture assembly and a sensor. No lens is used. The aperture assembly consists of a two dimensional array of aperture elements. The transmittance of each aperture element is independently controllable. The sensor is a single detection
Gang Huang 0003 +3 more
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