An all-fiber high-speed optical coherence tomography scanning device
An optical coherence tomography and scanning device technology, which is applied in the field of optical coherence tomography scanning devices, can solve the problems of large scanning error and slow imaging speed of the optical coherence tomography scanning device, and achieves reduction of scanning errors and intensity noise. and common mode noise, the effect of improving the signal-to-noise ratio
Active Publication Date: 2021-03-19
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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[0008] The purpose of the present invention is to solve the problems of slow imaging speed and large scanning error of the optical coherence tomography scanning device, and provide an all-fiber high-speed optical coherence tomography scanning device
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[0026] The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:
[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention , but not to limit the scope of the present invention.
[0028] like figure 1As shown, an all-fiber high-speed optical coherence tomography scanning device includes a superluminescent light-emitting diode 1 and a 1×2 fiber beam splitter arranged on the outgoing light path of the superluminescent light-emitting diode 1, and the superluminescent light-emitting diode 1 is a superluminescent laser Diode, the low coherent light from the super-radiant laser diode is divided into reference light and...
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Abstract
The invention belongs to the field of high-speed optical coherence tomography measurement, and particularly relates to an all-fiber high-speed optical coherence tomography scanning device. The all-fiber high-speed optical coherence tomography scanning device aims at solving the problems that an optical coherence tomography scanning device is low in imaging speed and large in scanning error. According to the coherence tomography scanning device, under the driving of a high-frequency piezoelectric actuator, a piezoelectric ceramic stack drives a light-mass hollow retroreflector to conduct one-dimensional high-frequency vibration, and longitudinal high-speed scanning is conducted on an object; one of the ends of two piezoelectric ceramic bent pieces is fixed, and the other one of the ends ofthe two piezoelectric ceramic bent pieces is fixedly connected with a high reflecting mirror; the high reflecting mirror can swing at a high speed along with the piezoelectric ceramic bent pieces; theswinging directions of the two piezoelectric ceramic bent pieces are perpendicular to each other; transverse high-speed scanning can be conducted on different positions of a sample by deflecting light beams; the resonant frequency of the piezoelectric ceramic stack and the two piezoelectric ceramic bent pieces is high, the amplitude is small, and therefore the imaging speed can be fully increasedwhile three-dimensional scanning is conducted on the sample, the scanning error is reduced, and artifacts are eliminated.
Description
technical field [0001] The invention belongs to the field of high-speed optical coherence tomography measurement, in particular to an optical coherence tomography scanning device which utilizes a high-frequency piezoelectric ceramic bending sheet and a micro-displacement high-frequency piezoelectric ceramic stack to realize high-speed scanning. Background technique [0002] With the improvement of people's requirements for disease diagnosis, especially for early disease detection, non-invasive diagnosis and in-depth study of human life phenomena, there is an urgent need for detection methods that can provide medical images that reflect specific parameters of the human body from different aspects. In the process of medical diagnosis, imaging technology has very important application value for disease diagnosis. Although the imaging principles or methods of various imaging technologies are not the same, and the diagnostic value and limit are also different, the essence is to ob...
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IPC IPC(8): G01N21/45G01N21/01
CPCG01N21/01G01N21/45
Inventor 魏儒义王鹏冲张朋昌吴银花胡炳樑韩意庭王飞橙卫翠玉高晓惠
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI