Results 11 to 20 of about 2,725 (213)
A Novel Approach for Measurement of Free-Form Optical Elements with Digital Holographic Microscopy
Micromachines, 2022 Free-form optical elements face significant challenges in high-precision measurement due to their high complexity and non-rotational symmetry. Digital holographic microscopy (DHM), as one of the methods for the measurement of free-form optical elements ...
Xuhui Zhang +4 more
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Applied Sciences, 2019 Effective perspective image segmentation and mosaicking (EPISM) method is an effective holographic stereogram printing method, but a mosaic misplacement of reconstruction image occurred when focusing away from the reconstruction image plane.
Fan Fan +6 more
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Projection-type see-through holographic three-dimensional display
Nature Communications, 2016 The design of holographic displays usually involves a trade-off between size and viewing angle. Here, the authors combine holographic projection with a digitally designed holographic optical element so that display size and the visual angle can be ...
Koki Wakunami +8 more
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Multilayer Smart Holographic Label with Integrated RFID for Product Security and Monitoring
Micromachines, 2023 Counterfeiting presents a major economic problem and an important risk for the public health and safety of individuals and countries. To make the counterfeiting process more difficult, and to ensure efficient authentication, a solution would be to attach
Cătălin Pârvulescu +4 more
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Selective Couplers Based on Multiplexed Volume Holographic Gratings for Waveguide Displays
Photonics, 2021 Diffraction waveguides are widely used in augmented reality devices as information display systems for the introduction of data into the human visual field in order to supplement information about the world around us. This paper formulates the principles
Maria Shishova +5 more
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A Fast Computer-Generated Holographic Method for VR and AR Near-Eye 3D Display
Applied Sciences, 2019 A fast computer-generated holographic method with multiple projection images for a near-eye VR (Virtual Reality) and AR (Augmented Reality) 3D display is proposed.
Xin Yang, HongBo Zhang, Qiong-Hua Wang
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Efficient Hogel-Based Hologram Synthesis Method for Holographic Stereogram Printing
Applied Sciences, 2020 With the development of the holographic printer, printing synthetic hologram requires smaller holographic element (hogel) size to improve spatial resolution of the reconstruction.
Erkhembaatar Dashdavaa +7 more
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Sensors, 2021 Phase compensation is a critical step for the optical measuring system using spatial light modulator (SLM). The wavefront distortion from SLM is mainly caused by the phase modulation non-linearity and non-uniformity of SLM’s physical structure and ...
Zhen Zeng +3 more
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Optical schemes of spectrographs with a diffractive optical element in a converging beam [PDF]
Journal of the European Optical Society-Rapid Publications, 2015 Optical schemes of spectrographs based on transmission concave holographic gratings working in converging beams are considered. General description of the design techniques are provided. Each of them is supported by a certain example with calculation and
Muslimov E. R., Pavlycheva N. K.
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Photonics, 2022 Theoretical modelling has been used to calculate the holographic recording beam angles required in air (at any recording wavelength) to produce a Volume Holographic Optical Element (VHOE) for any defined input and output beam angles. The approach is used
Dipanjan Chakraborty +6 more
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