Small optical resolution photoacoustic microscope based on micro-electromechanical scanning galvanometer

A technology of micro-electromechanical scanning and photoacoustic microscopy, which is applied in the direction of material analysis, scientific instruments, and analytical materials through optical means, can solve the problems of inability to apply endoscopic imaging, image quality loss, and volume reduction, and achieve easy application and promotion, reduced size and weight, high precision effect
CN107941708AInactive Publication Date: 2018-04-20UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2018-04-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

A small optical resolution photoacoustic microscope based on a micro-electromechanical scanning galvanometer belongs to the technical fields of automatic control and imaging. The small optical resolution photoacoustic microscope includes a light source assembly, a single-mode fiber coupling assembly, a light beam scanning assembly, a reflective support 4-1, a signal acquisition assembly and a computer, the computer controls pulsed laser emitted from the light source assembly to be collimated by the single-mode fiber coupling assembly and then enter the light beam scanning assembly, the light beam scanning assembly includes the micro-electromechanical scanning galvanometer 3-4 and a function generator 3-5, the computer controls the micro-electromechanical scanning galvanometer 3-4 to rotatethrough the function generator 3-5, the pulsed laser entering the light beam scanning assembly is reflected by the micro-electromechanical scanning galvanometer 3-4, and reacts with a target object through the reflective support 4-1 in order to generate a photoacoustic signal, and the photoacoustic signal is reflected by a light-transmitting and acoustic-reflecting sheet, is acquired by the signal acquisition assembly, is transmitted to the computer, and is stored and processed. The small optical resolution photoacoustic microscope has the advantages of small size, light weight, wide scanningrange and high scanning precision.
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Description

technical field

[0001] The invention relates to the technical field of automatic control and imaging, in particular to a small photoacoustic microscope with optical resolution based on a microelectromechanical (MEMS) scanning vibrating mirror. Background technique

[0002] Optical resolution photoacoustic microscopy is a non-destructive medical imaging technology with high resolution and high contrast emerging in the past decade, which is widely used in various medical research. Different from traditional optical microscopes, optical-resolution photoacoustic microscopy needs to acquire images by point-by-point scanning, so a high-precision scanning mechanism is crucial for optical-resolution photoacoustic microscopy. At present, when applying optical resolution photoacoustic microscope to image the target object at home and abroad, the application of high-performance stepping motor or scanning galvanometer is the most common method to achieve high-precision scanning. Howeve...

Claims

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