Abstract:
Certain aspects pertain to aperture-scanning Fourier ptychographic imaging devices comprising an aperture scanner that can generate an aperture at different locations at an intermediate plane of an optical arrangement, and a detector that can acquire lower resolution intensity images for different aperture locations, and wherein a higher resolution complex image may be constructed by iteratively updating regions in Fourier space with the acquired lower resolution images.
Abstract:
A device, including one or more Communication Physical Unclonable Function (CPUF) and key storage devices, the CPUF devices each including: a coherent Electromagnetic (EM) radiation source; a spatial light modulator (SLM) connected to the coherent EM radiation source; a volumetric scattering medium connected to the SLM; a detector connected to the volumetric scattering medium; and one or more processors or circuits connected to the detector and one or more processors or circuits connected to the SLM. A communication protocol is also provided.
Abstract:
A method and apparatus for irradiating a scattering medium with increased resolution. The method includes transmitting EM radiation from an Electromagnetic (EM) radiation source to a target inside a scattering medium, wherein the target encodes the EM radiation with a variance structure to form encoded EM radiation; measuring, in a detector, transmitted EM radiation comprising at least a portion of the encoded EM radiation transmitted through and exiting the scattering medium; decoding the transmitted EM radiation, comprising EM fields, in a computer, comprising selecting one or more of the EM fields having the variance structure; and irradiating the scattering medium with time reversed EM radiation from a spatial light modulator (SLM), the time reversed EM radiation generated from time reversing the EM fields having the variance structure, thereby forming a focus of the time reversed EM radiation in the scattering medium with the increased resolution.
Abstract:
A method and apparatus for irradiating a scattering medium with increased resolution. The method includes transmitting EM radiation from an Electromagnetic (EM) radiation source to a target inside a scattering medium, wherein the target encodes the EM radiation with a variance structure to form encoded EM radiation; measuring, in a detector, transmitted EM radiation comprising at least a portion of the encoded EM radiation transmitted through and exiting the scattering medium; decoding the transmitted EM radiation, comprising EM fields, in a computer, comprising selecting one or more of the EM fields having the variance structure; and irradiating the scattering medium with time reversed EM radiation from a spatial light modulator (SLM), the time reversed EM radiation generated from time reversing the EM fields having the variance structure, thereby forming a focus of the time reversed EM radiation in the scattering medium with the increased resolution.
Abstract:
Certain aspects pertain to Fourier ptychographic imaging systems, devices, and methods such as, for example, high NA Fourier ptychographic imaging systems and reflective-mode NA Fourier ptychographic imaging systems.
Abstract:
Systems, devices, and methods of Fourier ptychographic imaging by computationally reconstructing a high-resolution image by iteratively updating overlapping regions of variably-illuminated, low-resolution intensity images in Fourier space.
Abstract:
Systems, devices, and methods of Fourier ptychographic imaging configured for illuminating a specimen being imaged from a plurality of incidence angles, for acquiring variably-illuminated, low-resolution intensity images of the specimen, and for reconstructing a high-resolution image of the specimen by iteratively determining the high resolution image that is self-consistent with the variably-illuminated, low-resolution intensity images, for example, by updating overlapping regions of variably-illuminated, low-resolution intensity images in Fourier space.
Abstract:
Certain aspects pertain to Fourier ptychographic imaging systems, devices, and methods such as, for example, high NA Fourier ptychographic imaging systems and reflective-mode NA Fourier ptychographic imaging systems.