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Three-dimensional endoscope measuring device and method based on optical grating projection

A technology of grating projection and measuring device, applied in the field of endoscope, can solve the problems of complex control structure, cumbersome implementation, immature technology, etc., and achieve the effects of higher measurement accuracy, faster measurement speed, and complex scanning components.

Inactive Publication Date: 2008-09-17
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the control structure of this laser scanning system is complex, it takes a long time, the implementation is cumbersome, and the technology is not yet mature.

Method used

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  • Three-dimensional endoscope measuring device and method based on optical grating projection
  • Three-dimensional endoscope measuring device and method based on optical grating projection
  • Three-dimensional endoscope measuring device and method based on optical grating projection

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with drawings and embodiments.

[0029] see first figure 1 , figure 1 It is a schematic diagram of the three-dimensional endoscopic measurement device based on grating projection of the present invention. It is also a structural schematic diagram of an embodiment of the present invention. It can be seen from the figure that the three-dimensional endoscopic measurement device based on grating projection in the present invention consists of an optical fiber image guide bundle 2, an amplitude type transmission grating 3, a collimator lens 4, a semiconductor laser light source 5, a miniature area array CCD detector 6, a transmission line 7, An image acquisition card 8 and a computer 9 are formed, and the connection relationship of each component is: the laser light emitted by the semiconductor laser light source 5 is irradiated on the surface of the object to be measured through the collimator lens 4, th...

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Abstract

The invention relates to a three-dimensional endoscopic measuring unit and a method based on the grating projection, comprising an optical fiber image guide, an amplitude-type transmission grating, a collimating lens, a semiconductor laser light source, a micro CCD sensor array, a transmission line, an image capture card and a computer. The three-dimensional endoscopic measuring unit is characterized in that: the computer comprises a corresponding image processing and three-dimensional profile calculation and reconfiguration software; the amplitude-type transmission grating is projected on the measured surface during endoscopic observation; the grating fringe is modulated by the measured surface, so as to generate deformation; the deformation grating fringe is collected through a CCD imaging system; and the three-dimensional profile information of the measured target is obtained through computer image processing and a three-dimensional profile reconstruction algorithm. The three-dimensional endoscopic measuring unit has the advantages of being able to obtain the three-dimensional profile information of the endoscopic object with fast measurement, higher measuring accuracy and simple way.

Description

technical field [0001] This patent relates to endoscopes, especially a three-dimensional endoscopic measurement device and method based on grating projection. Background technique [0002] Endoscope is a precision medical instrument combining optomechanics and electronics, which is used to observe tissues and structures in the body and provide scientific diagnostic information for medical diagnosis, especially minimally invasive surgery. From the original hard tube endoscope to the current fiber endoscope and electronic endoscope, the technical development of endoscope is becoming more and more mature. [0003] Existing endoscopes include fiber endoscopes and electronic endoscopes. An endoscope generally consists of an illumination system and an image acquisition system. The illumination system mainly transmits the illumination light generated by the light source (commonly used such as a halogen cold light source) into the body to provide imaging illumination for the tissu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/06G06T7/00
Inventor 周常河王晓鑫张军谢金贾伟
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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