摘要:
An e-Petri dish comprising a transparent layer having a specimen surface and a light detector configured to sample a sequence of sub-pixel shifted projection images of a specimen located on the specimen surface. The sub-pixel shifted projection images associated with light from a plurality of illumination angles provided by an illumination source.
摘要:
A scanning projective lensless microscope device comprises a specimen surface, a scanning illumination source with a light element, a light detector outside the specimen surface, and a processor. The scanning illumination source scans the light element to a plurality of scanning locations to provide illumination to an object on the specimen surface. The light detector samples a sequence of sub-pixel shifted projection object images corresponding to the plurality of scanning locations. The processor constructs a high resolution image of the object based on the sequence of sub-pixel shifted projection images and a motion vector of the projections at a plane of interest.
摘要:
A detector of light transmitted through a turbid medium, comprising: one or more Digital Optical Phase Conjugation (DOPC) devices, wherein the DOPC devices include (1) a sensor for detecting input light that has been transmitted through the turbid medium and inputted on the sensor; and (2) a spatial light modulator (SLM) for outputting, in response to the input light detected by the sensor, output light that is an optical phase conjugate of the input light.
摘要:
An optofluidic microscope device is disclosed. The device includes a fluid channel having a surface and an object such as a bacterium or virus may flow through the fluid channel. Light imaging elements in the bottom of the fluid channel may be used to image the object.
摘要:
Certain embodiments pertain to Multiplexed Fourier Ptychographic imaging systems and methods. In one example, the Multiplexed Fourier Ptychographic imaging system includes an LED array configured to illuminate a sequence of LED patterns for illuminating a sample being imaged. The system includes LED circuitry configured to independently control power to turn on multiple LEDs simultaneously in each LED pattern of the array. The system has a light detector that acquires a first set of lower resolution images of the sample each image acquired during exposure time during illumination by a unique LED pattern. The system uses the first set of lower resolution images to generate a second set of lower resolution images associated with each LED in the LED array and iteratively updates overlapping regions in the Fourier domain with the second set of lower resolution images to generate a higher resolution image.
摘要:
Embodiments of the present invention relate to a high-resolution imaging device with wide field and extended focus comprising a beam generator for generating a plurality of nondiffracting beams and a scanning mechanism for moving the plurality of nondiffracting beams relative to the object to illuminate a volume of the object. The high-resolution imaging device also comprises surface element and a body having a light detector layer outside the surface element. The light detector layer has a light detector configured to measure light data associated with the plurality of nondiffracting beams illuminating the volume of the object. In some cases, the high-resolution imaging device also includes a lens inside of the light detector layer. The lens is configured to focus the light on the light detector surface.
摘要:
Embodiments of the present invention relate to a wavefront imaging sensor (WIS) comprising an aperture layer having an aperture, a light detector having a surface, and a transparent layer between the aperture layer and the light detector. The light detector can receive a light projection at the surface from light passing through the aperture. The light detector can also separately measure amplitude and phase information of a wavefront at the aperture based on the received light projection. The transparent layer has a thickness designed to locate the surface of the light detector approximately at a self-focusing plane in a high Fresnel number regime to narrow the light projection.
摘要:
Embodiments of the present invention relate to techniques for improving optofluidic microscope (OFM) devices. One technique which may be used eliminates the aperture layer covering the light detector layer. Other techniques retain the aperture layer, reversing the relative position of the light source and light detector such that light passes through the aperture layer before passing through the fluid channel to the light detector. Another technique adds an optical tweezer for controlling the movement of objects moving through the fluid channel. Another technique adds an optical fiber bundle to relay light from light transmissive regions to a remote light detector. Another technique adds two electrodes at ends of the fluid channel to generate an electrical field capable of moving objects through the fluid channel while suppressing rotation. These techniques can be employed separately or in combination to improve the capabilities of OFM devices.