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Micro photoacoustic microscopic imaging head, production method and system consisting of micro photoacoustic microscopic imaging head

A technology of photoacoustic microscopy and imaging head, which is applied in the direction of material analysis, sensor and diagnosis through optical means, which can solve the problems of low resolution of micro imaging head, short working distance, large size of imaging head, etc., so as to save production The process and the use process are simple, and the effect of easy alignment

Inactive Publication Date: 2018-08-03
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(i) Disadvantages of low resolution and short working distance of miniature imaging heads; (ii) General imaging heads are large in size, expensive, or have challenges in resolution optimization; (iii) Photoacoustic alignment technology is difficult

Method used

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  • Micro photoacoustic microscopic imaging head, production method and system consisting of micro photoacoustic microscopic imaging head
  • Micro photoacoustic microscopic imaging head, production method and system consisting of micro photoacoustic microscopic imaging head
  • Micro photoacoustic microscopic imaging head, production method and system consisting of micro photoacoustic microscopic imaging head

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Embodiment Construction

[0038] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0039] refer to figure 1 As shown, the miniature photoacoustic microscopic imaging head of the present invention includes: a single-mode optical fiber 1, a first focusing unit 2, a second focusing unit 3 and an optical fiber ultrasonic probe 4;

[0040] The first focusing unit 2 includes a first gradient index lens 21 and a glass tube 22, the first gradient index lens 21 is arranged inside one end of the glass tube 22, and the other end of the glass tube 22 is penetrated with a single-mode optical fiber 1, single The outgoing light of the mode fiber 1 corresponds to the central position of the external target (not shown in the figure) after being...

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Abstract

The invention discloses a micro photoacoustic microscopic imaging head, a production method and a system consisting of the micro photoacoustic microscopic imaging head. The microscopic imaging head comprises a single mode fiber, a first focusing unit, a second focusing unit and a fiber ultrasonic detector, wherein the first focusing unit comprises a first gradient refractive index lens and a glasstube, the first gradient refractive index lens is arranged in one end of the glass tube, the single mode fiber penetrates through the other end of the glass tube, and emergent light of the single mode fiber corresponds to the center of an outer target after being transmitted by the first gradient refractive index lens; the second focusing unit comprises a second gradient refractive index lens anda steel tube, the second gradient refractive index lens is arranged in one end of the steel tube, and the other end of the steel tube sleeves the first focusing unit; the fiber ultrasonic detector isarranged on the outer side of the steel tube. The micro photoacoustic microscopic imaging head is high in resolution, long in working distance, low in cost and simple and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of microscopic imaging equipment, in particular to a miniature photoacoustic microscopic imaging head, a manufacturing method and a system composed thereof. Background technique [0002] Photoacoustic imaging is an emerging medical imaging method in the past decade. It can image rich absorption contrast in biological tissue; in addition, due to the low ultrasonic scattering of biological tissue, it can have ultrasonic resolution and large imaging depth. Photoacoustic imaging has demonstrated many biomedical applications. In photoacoustic imaging, biological tissue is irradiated with pulsed laser light, and the light energy is converted into heat energy; then, pulsed ultrasound is generated through thermoelastic expansion; finally, imaging is performed by detecting the ultrasound signal. [0003] At present, the main implementation methods of photoacoustic imaging can be divided into photoacoustic computed ...

Claims

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Application Information

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IPC IPC(8): G01N21/17A61B5/00A61B5/1455
CPCA61B5/0095A61B5/14552G01N21/1702G01N2021/1706
Inventor 陈松良郭震东李光耀
Owner SHANGHAI JIAO TONG UNIV
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