WiMi Hologram Cloud Inc. (NASDAQ: WIMI) (“WiMi” or the “Company”), a global leader in Hologram Augmented Reality (“AR”) technology, today announced the development of the WIMI Digital Holographic Microscope System to solve the Problems known of phase information acquisition difficulties, zero-order image and conjugate image interference in optical technology. The system uses coherent optical imaging theory in combination with digital holography and is applied to 3D surface shape recognition of micro/nano components.
The system uses a digital holographic angular spectrum reconstruction algorithm that allows obtaining the bit phase distribution of surface scratches on optical components and capturing the entire area using scanning and stitching techniques. Based on the system device, a precision 3D scanning element is added to measure the surface scratches and insert them into the overall holographic stereo image, allowing the system to map the full 3D morphology of the object’s detection area.
A charge-coupled device is used to replace the traditional holographic recording, the angle algorithm is used to simulate the diffraction process of the optics, and the numerical simulation is carried out to reproduce the wavefront surface distribution of the light field of the original object so the whole process of holographic recording, storage, transmission, and playback can be digitized to meet micro/nano precision requirements, with the advantages of the full field of view, non-contact and non-destructive.
The system uses holography to generate high-resolution, real-time 3D digital images. The holographic image is created by the interference of reference light with the light of the object, which is then recorded by a holographic camera and transmitted to a computer for real-time digital reconstruction. A hologram is recorded and reconstructed in a few microseconds. The resulting target hologram is then analyzed by the system’s dedicated data acquisition and analysis software to generate:
Light Intensity Map: provides images with the same contrast as a conventional microscope.
Phase Diagram: Provides quantified values for an accurate 3D measurement of the test object.
In reflective digital holography, the phase diagram shows the topography of the surface light intensity map of the object under test with sub-nanometer precision. In transmissive digital holography, the phase diagram shows the phase shift information of the transparent sample under test, and these values provide essential quantitative information for mainly biological samples. This versatile approach to digital holography offers increased precision for video and computer microscopy image planes. However, WiMi will also adjust various optical parameters in the optical microscope, including optical phase contrast, digital image focusing, image tilt adjustment, and environmental noise elimination.
WiMi’s digital holographic microscope system provides a non-destructive and rapid full-field-of-view quantitative inspection method for 3D surface shape inspection of micro-optical components. Later, this system shall be used for pre-processing, optimization, and subsequent quality assessment of micro/nano components through further analysis of data accuracy and experimental investigation of multiple samples.
