Patent ID: 11880027
Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. A high-speed stereo 3D multimodal imaging method, comprising following steps of:
S1: mounting a 3D micro-nano sample onto a microscope stage;
S2: selecting an excitation beam required for a multimodal nonlinear spectral imaging;
S3: splitting a selected laser beam to obtain first and second near-infrared ultrafast pulsed laser sub-beams with different angles;
S4: passing the first and second near-infrared ultrafast pulsed laser sub-beams respectively through reflectors with adjustable rotation angles, adjusting the rotation angles of the reflectors so that the reflected first and second near-infrared ultrafast pulsed laser sub-beams are irradiated onto the 3D micro-nanoscale sample through a focus lens respectively;
S5: adjusting a position of a stage so that the 3D micro-nanoscale sample is at a focal plane of the focus lens and the irradiated 3D micro-nano sample generates first and second nonlinear spectral signals;
S6: collecting, by an imaging lens, multimodal nonlinear spectral signals generated by the 3D micro-nanoscale sample due to scattering after the 3D micro-nanoscale sample is irradiated by the first and the second near-infrared ultrafast pulsed laser sub-beams that are tightly focused;
S7: according to a selected modal imaging, selecting a filter with a suitable wavelength to be disposed between the imaging lens and a large area array detector to perform a monochrome imaging representing a single modal to obtain two 2D images each containing information of the 3D micro-nanoscale sample, and simultaneously detecting the two 2D images in an optimal detection mode of the large area array detector;
S8: according to application requirements, superimposing each of 2D images of single modal into a 2D multimodal image; and
S9: based on the detected two 2D images, constructing a stereo 3D image while obtaining depth information of the 3D sample.